75 files changed, 649 insertions, 802 deletions

diff --git a/fs/9p/mux.c b/fs/9p/mux.c
index ea1134eb47c8..8e8356c1c229 100644
--- a/fs/9p/mux.c
+++ b/fs/9p/mux.c
@@ -31,6 +31,7 @@
 #include <linux/poll.h>
 #include <linux/kthread.h>
 #include <linux/idr.h>
+#include <linux/mutex.h>
 
 #include "debug.h"
 #include "v9fs.h"
@@ -110,7 +111,7 @@ static void v9fs_pollwait(struct file *filp, wait_queue_head_t * wait_address,
 static u16 v9fs_mux_get_tag(struct v9fs_mux_data *);
 static void v9fs_mux_put_tag(struct v9fs_mux_data *, u16);
 
-static DECLARE_MUTEX(v9fs_mux_task_lock);
+static DEFINE_MUTEX(v9fs_mux_task_lock);
 static struct workqueue_struct *v9fs_mux_wq;
 
 static int v9fs_mux_num;
@@ -166,7 +167,7 @@ static int v9fs_mux_poll_start(struct v9fs_mux_data *m)
 
         dprintk(DEBUG_MUX, "mux %p muxnum %d procnum %d\n", m, v9fs_mux_num,
                 v9fs_mux_poll_task_num);
-        up(&v9fs_mux_task_lock);
+        mutex_lock(&v9fs_mux_task_lock);
 
         n = v9fs_mux_calc_poll_procs(v9fs_mux_num + 1);
         if (n > v9fs_mux_poll_task_num) {
@@ -225,7 +226,7 @@ static int v9fs_mux_poll_start(struct v9fs_mux_data *m)
         }
 
         v9fs_mux_num++;
-        down(&v9fs_mux_task_lock);
+        mutex_unlock(&v9fs_mux_task_lock);
 
         return 0;
 }
@@ -235,7 +236,7 @@ static void v9fs_mux_poll_stop(struct v9fs_mux_data *m)
         int i;
         struct v9fs_mux_poll_task *vpt;
 
-        up(&v9fs_mux_task_lock);
+        mutex_lock(&v9fs_mux_task_lock);
         vpt = m->poll_task;
         list_del(&m->mux_list);
         for(i = 0; i < ARRAY_SIZE(m->poll_waddr); i++) {
@@ -252,7 +253,7 @@ static void v9fs_mux_poll_stop(struct v9fs_mux_data *m)
                 v9fs_mux_poll_task_num--;
         }
         v9fs_mux_num--;
-        down(&v9fs_mux_task_lock);
+        mutex_unlock(&v9fs_mux_task_lock);
 }
 
 /**
diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c
index 3ad8455f8577..651a9e14d9a9 100644
--- a/fs/9p/vfs_inode.c
+++ b/fs/9p/vfs_inode.c
@@ -614,6 +614,7 @@ static struct dentry *v9fs_vfs_lookup(struct inode *dir, struct dentry *dentry,
 
         sb = dir->i_sb;
         v9ses = v9fs_inode2v9ses(dir);
+        dentry->d_op = &v9fs_dentry_operations;
         dirfid = v9fs_fid_lookup(dentry->d_parent);
 
         if (!dirfid) {
@@ -681,8 +682,6 @@ static struct dentry *v9fs_vfs_lookup(struct inode *dir, struct dentry *dentry,
                 goto FreeFcall;
 
         fid->qid = fcall->params.rstat.stat.qid;
-
-        dentry->d_op = &v9fs_dentry_operations;
         v9fs_stat2inode(&fcall->params.rstat.stat, inode, inode->i_sb);
 
         d_add(dentry, inode);
diff --git a/fs/adfs/file.c b/fs/adfs/file.c
index afebbfde6968..6af10885f9d6 100644
--- a/fs/adfs/file.c
+++ b/fs/adfs/file.c
@@ -19,11 +19,7 @@
  *
  *  adfs regular file handling primitives           
  */
-#include <linux/errno.h>
 #include <linux/fs.h>
-#include <linux/fcntl.h>
-#include <linux/time.h>
-#include <linux/stat.h>
 #include <linux/buffer_head.h>                  /* for file_fsync() */
 #include <linux/adfs_fs.h>
 
diff --git a/fs/autofs4/autofs_i.h b/fs/autofs4/autofs_i.h
index 385bed09b0d8..f54c5b21f876 100644
--- a/fs/autofs4/autofs_i.h
+++ b/fs/autofs4/autofs_i.h
@@ -13,6 +13,7 @@
 /* Internal header file for autofs */
 
 #include <linux/auto_fs4.h>
+#include <linux/mutex.h>
 #include <linux/list.h>
 
 /* This is the range of ioctl() numbers we claim as ours */
@@ -102,7 +103,7 @@ struct autofs_sb_info {
         int reghost_enabled;
         int needs_reghost;
         struct super_block *sb;
-        struct semaphore wq_sem;
+        struct mutex wq_mutex;
         spinlock_t fs_lock;
         struct autofs_wait_queue *queues; /* Wait queue pointer */
 };
diff --git a/fs/autofs4/inode.c b/fs/autofs4/inode.c
index 2d3082854a29..1ad98d48e550 100644
--- a/fs/autofs4/inode.c
+++ b/fs/autofs4/inode.c
@@ -269,7 +269,7 @@ int autofs4_fill_super(struct super_block *s, void *data, int silent)
         sbi->sb = s;
         sbi->version = 0;
         sbi->sub_version = 0;
-        init_MUTEX(&sbi->wq_sem);
+        mutex_init(&sbi->wq_mutex);
         spin_lock_init(&sbi->fs_lock);
         sbi->queues = NULL;
         s->s_blocksize = 1024;
diff --git a/fs/autofs4/waitq.c b/fs/autofs4/waitq.c
index 394ff36ef8f1..be78e9378c03 100644
--- a/fs/autofs4/waitq.c
+++ b/fs/autofs4/waitq.c
@@ -178,7 +178,7 @@ int autofs4_wait(struct autofs_sb_info *sbi, struct dentry *dentry,
                 return -ENOENT;
         }
 
-        if (down_interruptible(&sbi->wq_sem)) {
+        if (mutex_lock_interruptible(&sbi->wq_mutex)) {
                 kfree(name);
                 return -EINTR;
         }
@@ -194,7 +194,7 @@ int autofs4_wait(struct autofs_sb_info *sbi, struct dentry *dentry,
                 /* Can't wait for an expire if there's no mount */
                 if (notify == NFY_NONE && !d_mountpoint(dentry)) {
                         kfree(name);
-                        up(&sbi->wq_sem);
+                        mutex_unlock(&sbi->wq_mutex);
                         return -ENOENT;
                 }
 
@@ -202,7 +202,7 @@ int autofs4_wait(struct autofs_sb_info *sbi, struct dentry *dentry,
                 wq = kmalloc(sizeof(struct autofs_wait_queue),GFP_KERNEL);
                 if ( !wq ) {
                         kfree(name);
-                        up(&sbi->wq_sem);
+                        mutex_unlock(&sbi->wq_mutex);
                         return -ENOMEM;
                 }
 
@@ -218,10 +218,10 @@ int autofs4_wait(struct autofs_sb_info *sbi, struct dentry *dentry,
                 wq->status = -EINTR; /* Status return if interrupted */
                 atomic_set(&wq->wait_ctr, 2);
                 atomic_set(&wq->notified, 1);
-                up(&sbi->wq_sem);
+                mutex_unlock(&sbi->wq_mutex);
         } else {
                 atomic_inc(&wq->wait_ctr);
-                up(&sbi->wq_sem);
+                mutex_unlock(&sbi->wq_mutex);
                 kfree(name);
                 DPRINTK("existing wait id = 0x%08lx, name = %.*s, nfy=%d",
                         (unsigned long) wq->wait_queue_token, wq->len, wq->name, notify);
@@ -282,19 +282,19 @@ int autofs4_wait_release(struct autofs_sb_info *sbi, autofs_wqt_t wait_queue_tok
 {
         struct autofs_wait_queue *wq, **wql;
 
-        down(&sbi->wq_sem);
+        mutex_lock(&sbi->wq_mutex);
         for ( wql = &sbi->queues ; (wq = *wql) != 0 ; wql = &wq->next ) {
                 if ( wq->wait_queue_token == wait_queue_token )
                         break;
         }
 
         if ( !wq ) {
-                up(&sbi->wq_sem);
+                mutex_unlock(&sbi->wq_mutex);
                 return -EINVAL;
         }
 
         *wql = wq->next;        /* Unlink from chain */
-        up(&sbi->wq_sem);
+        mutex_unlock(&sbi->wq_mutex);
         kfree(wq->name);
         wq->name = NULL;        /* Do not wait on this queue */
 
diff --git a/fs/befs/linuxvfs.c b/fs/befs/linuxvfs.c
index 2d365cb8eec6..dd6048ce0532 100644
--- a/fs/befs/linuxvfs.c
+++ b/fs/befs/linuxvfs.c
@@ -561,7 +561,7 @@ befs_utf2nls(struct super_block *sb, const char *in,
  * @sb: Superblock
  * @src: Input string buffer in NLS format
  * @srclen: Length of input string in bytes
- * @dest: The output string in UTF8 format
+ * @dest: The output string in UTF-8 format
  * @destlen: Length of the output buffer
  * 
  * Converts input string @src, which is in the format of the loaded NLS map,
diff --git a/fs/bio.c b/fs/bio.c
index 1f3bb501c262..8f1d2e815c96 100644
--- a/fs/bio.c
+++ b/fs/bio.c
@@ -1243,11 +1243,11 @@ static int __init init_bio(void)
                 scale = 4;
 
         /*
-         * scale number of entries
+         * Limit number of entries reserved -- mempools are only used when
+         * the system is completely unable to allocate memory, so we only
+         * need enough to make progress.
          */
-        bvec_pool_entries = megabytes * 2;
-        if (bvec_pool_entries > 256)
-                bvec_pool_entries = 256;
+        bvec_pool_entries = 1 + scale;
 
         fs_bio_set = bioset_create(BIO_POOL_SIZE, bvec_pool_entries, scale);
         if (!fs_bio_set)
diff --git a/fs/block_dev.c b/fs/block_dev.c
index 6e50346fb1ee..44d05e6e34db 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -265,8 +265,8 @@ static void init_once(void * foo, kmem_cache_t * cachep, unsigned long flags)
             SLAB_CTOR_CONSTRUCTOR)
         {
                 memset(bdev, 0, sizeof(*bdev));
-                sema_init(&bdev->bd_sem, 1);
-                sema_init(&bdev->bd_mount_sem, 1);
+                mutex_init(&bdev->bd_mutex);
+                mutex_init(&bdev->bd_mount_mutex);
                 INIT_LIST_HEAD(&bdev->bd_inodes);
                 INIT_LIST_HEAD(&bdev->bd_list);
                 inode_init_once(&ei->vfs_inode);
@@ -574,7 +574,7 @@ static int do_open(struct block_device *bdev, struct file *file)
         }
         owner = disk->fops->owner;
 
-        down(&bdev->bd_sem);
+        mutex_lock(&bdev->bd_mutex);
         if (!bdev->bd_openers) {
                 bdev->bd_disk = disk;
                 bdev->bd_contains = bdev;
@@ -605,21 +605,21 @@ static int do_open(struct block_device *bdev, struct file *file)
                         if (ret)
                                 goto out_first;
                         bdev->bd_contains = whole;
-                        down(&whole->bd_sem);
+                        mutex_lock(&whole->bd_mutex);
                         whole->bd_part_count++;
                         p = disk->part[part - 1];
                         bdev->bd_inode->i_data.backing_dev_info =
                            whole->bd_inode->i_data.backing_dev_info;
                         if (!(disk->flags & GENHD_FL_UP) || !p || !p->nr_sects) {
                                 whole->bd_part_count--;
-                                up(&whole->bd_sem);
+                                mutex_unlock(&whole->bd_mutex);
                                 ret = -ENXIO;
                                 goto out_first;
                         }
                         kobject_get(&p->kobj);
                         bdev->bd_part = p;
                         bd_set_size(bdev, (loff_t) p->nr_sects << 9);
-                        up(&whole->bd_sem);
+                        mutex_unlock(&whole->bd_mutex);
                 }
         } else {
                 put_disk(disk);
@@ -633,13 +633,13 @@ static int do_open(struct block_device *bdev, struct file *file)
                         if (bdev->bd_invalidated)
                                 rescan_partitions(bdev->bd_disk, bdev);
                 } else {
-                        down(&bdev->bd_contains->bd_sem);
+                        mutex_lock(&bdev->bd_contains->bd_mutex);
                         bdev->bd_contains->bd_part_count++;
-                        up(&bdev->bd_contains->bd_sem);
+                        mutex_unlock(&bdev->bd_contains->bd_mutex);
                 }
         }
         bdev->bd_openers++;
-        up(&bdev->bd_sem);
+        mutex_unlock(&bdev->bd_mutex);
         unlock_kernel();
         return 0;
 
@@ -652,7 +652,7 @@ out_first:
         put_disk(disk);
         module_put(owner);
 out:
-        up(&bdev->bd_sem);
+        mutex_unlock(&bdev->bd_mutex);
         unlock_kernel();
         if (ret)
                 bdput(bdev);
@@ -714,7 +714,7 @@ int blkdev_put(struct block_device *bdev)
         struct inode *bd_inode = bdev->bd_inode;
         struct gendisk *disk = bdev->bd_disk;
 
-        down(&bdev->bd_sem);
+        mutex_lock(&bdev->bd_mutex);
         lock_kernel();
         if (!--bdev->bd_openers) {
                 sync_blockdev(bdev);
@@ -724,9 +724,9 @@ int blkdev_put(struct block_device *bdev)
                 if (disk->fops->release)
                         ret = disk->fops->release(bd_inode, NULL);
         } else {
-                down(&bdev->bd_contains->bd_sem);
+                mutex_lock(&bdev->bd_contains->bd_mutex);
                 bdev->bd_contains->bd_part_count--;
-                up(&bdev->bd_contains->bd_sem);
+                mutex_unlock(&bdev->bd_contains->bd_mutex);
         }
         if (!bdev->bd_openers) {
                 struct module *owner = disk->fops->owner;
@@ -746,7 +746,7 @@ int blkdev_put(struct block_device *bdev)
                 bdev->bd_contains = NULL;
         }
         unlock_kernel();
-        up(&bdev->bd_sem);
+        mutex_unlock(&bdev->bd_mutex);
         bdput(bdev);
         return ret;
 }
diff --git a/fs/buffer.c b/fs/buffer.c
index a9b399402007..0d6ca7bac6c8 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -201,7 +201,7 @@ int fsync_bdev(struct block_device *bdev)
  * freeze_bdev  --  lock a filesystem and force it into a consistent state
  * @bdev:       blockdevice to lock
  *
- * This takes the block device bd_mount_sem to make sure no new mounts
+ * This takes the block device bd_mount_mutex to make sure no new mounts
  * happen on bdev until thaw_bdev() is called.
  * If a superblock is found on this device, we take the s_umount semaphore
  * on it to make sure nobody unmounts until the snapshot creation is done.
@@ -210,7 +210,7 @@ struct super_block *freeze_bdev(struct block_device *bdev)
 {
         struct super_block *sb;
 
-        down(&bdev->bd_mount_sem);
+        mutex_lock(&bdev->bd_mount_mutex);
         sb = get_super(bdev);
         if (sb && !(sb->s_flags & MS_RDONLY)) {
                 sb->s_frozen = SB_FREEZE_WRITE;
@@ -264,7 +264,7 @@ void thaw_bdev(struct block_device *bdev, struct super_block *sb)
                 drop_super(sb);
         }
 
-        up(&bdev->bd_mount_sem);
+        mutex_unlock(&bdev->bd_mount_mutex);
 }
 EXPORT_SYMBOL(thaw_bdev);
 
@@ -3051,68 +3051,6 @@ asmlinkage long sys_bdflush(int func, long data)
 }
 
 /*
- * Migration function for pages with buffers. This function can only be used
- * if the underlying filesystem guarantees that no other references to "page"
- * exist.
- */
-#ifdef CONFIG_MIGRATION
-int buffer_migrate_page(struct page *newpage, struct page *page)
-{
-        struct address_space *mapping = page->mapping;
-        struct buffer_head *bh, *head;
-        int rc;
-
-        if (!mapping)
-                return -EAGAIN;
-
-        if (!page_has_buffers(page))
-                return migrate_page(newpage, page);
-
-        head = page_buffers(page);
-
-        rc = migrate_page_remove_references(newpage, page, 3);
-        if (rc)
-                return rc;
-
-        bh = head;
-        do {
-                get_bh(bh);
-                lock_buffer(bh);
-                bh = bh->b_this_page;
-
-        } while (bh != head);
-
-        ClearPagePrivate(page);
-        set_page_private(newpage, page_private(page));
-        set_page_private(page, 0);
-        put_page(page);
-        get_page(newpage);
-
-        bh = head;
-        do {
-                set_bh_page(bh, newpage, bh_offset(bh));
-                bh = bh->b_this_page;
-
-        } while (bh != head);
-
-        SetPagePrivate(newpage);
-
-        migrate_page_copy(newpage, page);
-
-        bh = head;
-        do {
-                unlock_buffer(bh);
-                put_bh(bh);
-                bh = bh->b_this_page;
-
-        } while (bh != head);
-
-        return 0;
-}
-EXPORT_SYMBOL(buffer_migrate_page);
-#endif
-
-/*
  * Buffer-head allocation
  */
 static kmem_cache_t *bh_cachep;
diff --git a/fs/cifs/CHANGES b/fs/cifs/CHANGES
index d335015473a5..cb68efba35db 100644
--- a/fs/cifs/CHANGES
+++ b/fs/cifs/CHANGES
@@ -160,7 +160,7 @@ improperly zeroed buffer in CIFS Unix extensions set times call.
 Version 1.25
 ------------
 Fix internationalization problem in cifs readdir with filenames that map to 
-longer UTF8 strings than the string on the wire was in Unicode.  Add workaround
+longer UTF-8 strings than the string on the wire was in Unicode.  Add workaround
 for readdir to netapp servers. Fix search rewind (seek into readdir to return 
 non-consecutive entries).  Do not do readdir when server negotiates 
 buffer size to small to fit filename. Add support for reading POSIX ACLs from
diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c
index fed55e3c53df..632561dd9c50 100644
--- a/fs/cifs/dir.c
+++ b/fs/cifs/dir.c
@@ -138,9 +138,9 @@ cifs_create(struct inode *inode, struct dentry *direntry, int mode,
         cifs_sb = CIFS_SB(inode->i_sb);
         pTcon = cifs_sb->tcon;
 
-        down(&direntry->d_sb->s_vfs_rename_sem);
+        mutex_lock(&direntry->d_sb->s_vfs_rename_mutex);
         full_path = build_path_from_dentry(direntry);
-        up(&direntry->d_sb->s_vfs_rename_sem);
+        mutex_unlock(&direntry->d_sb->s_vfs_rename_mutex);
         if(full_path == NULL) {
                 FreeXid(xid);
                 return -ENOMEM;
@@ -317,9 +317,9 @@ int cifs_mknod(struct inode *inode, struct dentry *direntry, int mode,
         cifs_sb = CIFS_SB(inode->i_sb);
         pTcon = cifs_sb->tcon;
 
-        down(&direntry->d_sb->s_vfs_rename_sem);
+        mutex_lock(&direntry->d_sb->s_vfs_rename_mutex);
         full_path = build_path_from_dentry(direntry);
-        up(&direntry->d_sb->s_vfs_rename_sem);
+        mutex_unlock(&direntry->d_sb->s_vfs_rename_mutex);
         if(full_path == NULL)
                 rc = -ENOMEM;
         else if (pTcon->ses->capabilities & CAP_UNIX) {
diff --git a/fs/cifs/fcntl.c b/fs/cifs/fcntl.c
index a7a47bb36bf3..ec4dfe9bf5ef 100644
--- a/fs/cifs/fcntl.c
+++ b/fs/cifs/fcntl.c
@@ -86,9 +86,9 @@ int cifs_dir_notify(struct file * file, unsigned long arg)
         cifs_sb = CIFS_SB(file->f_dentry->d_sb);
         pTcon = cifs_sb->tcon;
 
-        down(&file->f_dentry->d_sb->s_vfs_rename_sem);
+        mutex_lock(&file->f_dentry->d_sb->s_vfs_rename_mutex);
         full_path = build_path_from_dentry(file->f_dentry);
-        up(&file->f_dentry->d_sb->s_vfs_rename_sem);
+        mutex_unlock(&file->f_dentry->d_sb->s_vfs_rename_mutex);
 
         if(full_path == NULL) {
                 rc = -ENOMEM;
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index 675bd2568297..165d67426381 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -203,9 +203,9 @@ int cifs_open(struct inode *inode, struct file *file)
                 }
         }
 
-        down(&inode->i_sb->s_vfs_rename_sem);
+        mutex_lock(&inode->i_sb->s_vfs_rename_mutex);
         full_path = build_path_from_dentry(file->f_dentry);
-        up(&inode->i_sb->s_vfs_rename_sem);
+        mutex_unlock(&inode->i_sb->s_vfs_rename_mutex);
         if (full_path == NULL) {
                 FreeXid(xid);
                 return -ENOMEM;
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index 59359911f481..ff93a9f81d1c 100644
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -574,9 +574,9 @@ int cifs_unlink(struct inode *inode, struct dentry *direntry)
 
         /* Unlink can be called from rename so we can not grab the sem here
            since we deadlock otherwise */
-/*      down(&direntry->d_sb->s_vfs_rename_sem);*/
+/*      mutex_lock(&direntry->d_sb->s_vfs_rename_mutex);*/
         full_path = build_path_from_dentry(direntry);
-/*      up(&direntry->d_sb->s_vfs_rename_sem);*/
+/*      mutex_unlock(&direntry->d_sb->s_vfs_rename_mutex);*/
         if (full_path == NULL) {
                 FreeXid(xid);
                 return -ENOMEM;
@@ -718,9 +718,9 @@ int cifs_mkdir(struct inode *inode, struct dentry *direntry, int mode)
         cifs_sb = CIFS_SB(inode->i_sb);
         pTcon = cifs_sb->tcon;
 
-        down(&inode->i_sb->s_vfs_rename_sem);
+        mutex_lock(&inode->i_sb->s_vfs_rename_mutex);
         full_path = build_path_from_dentry(direntry);
-        up(&inode->i_sb->s_vfs_rename_sem);
+        mutex_unlock(&inode->i_sb->s_vfs_rename_mutex);
         if (full_path == NULL) {
                 FreeXid(xid);
                 return -ENOMEM;
@@ -803,9 +803,9 @@ int cifs_rmdir(struct inode *inode, struct dentry *direntry)
         cifs_sb = CIFS_SB(inode->i_sb);
         pTcon = cifs_sb->tcon;
 
-        down(&inode->i_sb->s_vfs_rename_sem);
+        mutex_lock(&inode->i_sb->s_vfs_rename_mutex);
         full_path = build_path_from_dentry(direntry);
-        up(&inode->i_sb->s_vfs_rename_sem);
+        mutex_unlock(&inode->i_sb->s_vfs_rename_mutex);
         if (full_path == NULL) {
                 FreeXid(xid);
                 return -ENOMEM;
@@ -1137,9 +1137,9 @@ int cifs_setattr(struct dentry *direntry, struct iattr *attrs)
                         rc = 0;
         }
                 
-        down(&direntry->d_sb->s_vfs_rename_sem);
+        mutex_lock(&direntry->d_sb->s_vfs_rename_mutex);
         full_path = build_path_from_dentry(direntry);
-        up(&direntry->d_sb->s_vfs_rename_sem);
+        mutex_unlock(&direntry->d_sb->s_vfs_rename_mutex);
         if (full_path == NULL) {
                 FreeXid(xid);
                 return -ENOMEM;
diff --git a/fs/cifs/link.c b/fs/cifs/link.c
index 0f99aae33162..8d0da7c87c7b 100644
--- a/fs/cifs/link.c
+++ b/fs/cifs/link.c
@@ -48,10 +48,10 @@ cifs_hardlink(struct dentry *old_file, struct inode *inode,
 /* No need to check for cross device links since server will do that
    BB note DFS case in future though (when we may have to check) */
 
-        down(&inode->i_sb->s_vfs_rename_sem);
+        mutex_lock(&inode->i_sb->s_vfs_rename_mutex);
         fromName = build_path_from_dentry(old_file);
         toName = build_path_from_dentry(direntry);
-        up(&inode->i_sb->s_vfs_rename_sem);
+        mutex_unlock(&inode->i_sb->s_vfs_rename_mutex);
         if((fromName == NULL) || (toName == NULL)) {
                 rc = -ENOMEM;
                 goto cifs_hl_exit;
@@ -103,9 +103,9 @@ cifs_follow_link(struct dentry *direntry, struct nameidata *nd)
 
         xid = GetXid();
 
-        down(&direntry->d_sb->s_vfs_rename_sem);
+        mutex_lock(&direntry->d_sb->s_vfs_rename_mutex);
         full_path = build_path_from_dentry(direntry);
-        up(&direntry->d_sb->s_vfs_rename_sem);
+        mutex_unlock(&direntry->d_sb->s_vfs_rename_mutex);
 
         if (!full_path)
                 goto out_no_free;
@@ -164,9 +164,9 @@ cifs_symlink(struct inode *inode, struct dentry *direntry, const char *symname)
         cifs_sb = CIFS_SB(inode->i_sb);
         pTcon = cifs_sb->tcon;
 
-        down(&inode->i_sb->s_vfs_rename_sem);
+        mutex_lock(&inode->i_sb->s_vfs_rename_mutex);
         full_path = build_path_from_dentry(direntry);
-        up(&inode->i_sb->s_vfs_rename_sem);
+        mutex_unlock(&inode->i_sb->s_vfs_rename_mutex);
 
         if(full_path == NULL) {
                 FreeXid(xid);
@@ -232,9 +232,9 @@ cifs_readlink(struct dentry *direntry, char __user *pBuffer, int buflen)
 
 /* BB would it be safe against deadlock to grab this sem 
       even though rename itself grabs the sem and calls lookup? */
-/*       down(&inode->i_sb->s_vfs_rename_sem);*/
+/*       mutex_lock(&inode->i_sb->s_vfs_rename_mutex);*/
         full_path = build_path_from_dentry(direntry);
-/*       up(&inode->i_sb->s_vfs_rename_sem);*/
+/*       mutex_unlock(&inode->i_sb->s_vfs_rename_mutex);*/
 
         if(full_path == NULL) {
                 FreeXid(xid);
diff --git a/fs/cifs/readdir.c b/fs/cifs/readdir.c
index 288cc048d37f..edb3b6eb34bc 100644
--- a/fs/cifs/readdir.c
+++ b/fs/cifs/readdir.c
@@ -404,9 +404,9 @@ static int initiate_cifs_search(const int xid, struct file *file)
         if(pTcon == NULL)
                 return -EINVAL;
 
-        down(&file->f_dentry->d_sb->s_vfs_rename_sem);
+        mutex_lock(&file->f_dentry->d_sb->s_vfs_rename_mutex);
         full_path = build_path_from_dentry(file->f_dentry);
-        up(&file->f_dentry->d_sb->s_vfs_rename_sem);
+        mutex_unlock(&file->f_dentry->d_sb->s_vfs_rename_mutex);
 
         if(full_path == NULL) {
                 return -ENOMEM;
diff --git a/fs/cifs/xattr.c b/fs/cifs/xattr.c
index 777e3363c2a4..3938444d87b2 100644
--- a/fs/cifs/xattr.c
+++ b/fs/cifs/xattr.c
@@ -62,9 +62,9 @@ int cifs_removexattr(struct dentry * direntry, const char * ea_name)
         cifs_sb = CIFS_SB(sb);
         pTcon = cifs_sb->tcon;
                                                                                      
-        down(&sb->s_vfs_rename_sem);
+        mutex_lock(&sb->s_vfs_rename_mutex);
         full_path = build_path_from_dentry(direntry);
-        up(&sb->s_vfs_rename_sem);
+        mutex_unlock(&sb->s_vfs_rename_mutex);
         if(full_path == NULL) {
                 FreeXid(xid);
                 return -ENOMEM;
@@ -116,9 +116,9 @@ int cifs_setxattr(struct dentry * direntry, const char * ea_name,
         cifs_sb = CIFS_SB(sb);
         pTcon = cifs_sb->tcon;
 
-        down(&sb->s_vfs_rename_sem);
+        mutex_lock(&sb->s_vfs_rename_mutex);
         full_path = build_path_from_dentry(direntry);
-        up(&sb->s_vfs_rename_sem);
+        mutex_unlock(&sb->s_vfs_rename_mutex);
         if(full_path == NULL) {
                 FreeXid(xid);
                 return -ENOMEM;
@@ -223,9 +223,9 @@ ssize_t cifs_getxattr(struct dentry * direntry, const char * ea_name,
         cifs_sb = CIFS_SB(sb);
         pTcon = cifs_sb->tcon;
 
-        down(&sb->s_vfs_rename_sem);
+        mutex_lock(&sb->s_vfs_rename_mutex);
         full_path = build_path_from_dentry(direntry);
-        up(&sb->s_vfs_rename_sem);
+        mutex_unlock(&sb->s_vfs_rename_mutex);
         if(full_path == NULL) {
                 FreeXid(xid);
                 return -ENOMEM;
@@ -341,9 +341,9 @@ ssize_t cifs_listxattr(struct dentry * direntry, char * data, size_t buf_size)
         cifs_sb = CIFS_SB(sb);
         pTcon = cifs_sb->tcon;
 
-        down(&sb->s_vfs_rename_sem);
+        mutex_lock(&sb->s_vfs_rename_mutex);
         full_path = build_path_from_dentry(direntry);
-        up(&sb->s_vfs_rename_sem);
+        mutex_unlock(&sb->s_vfs_rename_mutex);
         if(full_path == NULL) {
                 FreeXid(xid);
                 return -ENOMEM;
diff --git a/fs/devpts/inode.c b/fs/devpts/inode.c
index bfb8a230bac9..14c5620b5cab 100644
--- a/fs/devpts/inode.c
+++ b/fs/devpts/inode.c
@@ -18,6 +18,7 @@
 #include <linux/mount.h>
 #include <linux/tty.h>
 #include <linux/devpts_fs.h>
+#include <linux/parser.h>
 
 #define DEVPTS_SUPER_MAGIC 0x1cd1
 
@@ -32,39 +33,60 @@ static struct {
         umode_t mode;
 } config = {.mode = 0600};
 
+enum {
+        Opt_uid, Opt_gid, Opt_mode,
+        Opt_err
+};
+
+static match_table_t tokens = {
+        {Opt_uid, "uid=%u"},
+        {Opt_gid, "gid=%u"},
+        {Opt_mode, "mode=%o"},
+        {Opt_err, NULL}
+};
+
 static int devpts_remount(struct super_block *sb, int *flags, char *data)
 {
-        int setuid = 0;
-        int setgid = 0;
-        uid_t uid = 0;
-        gid_t gid = 0;
-        umode_t mode = 0600;
-        char *this_char;
-
-        this_char = NULL;
-        while ((this_char = strsep(&data, ",")) != NULL) {
-                int n;
-                char dummy;
-                if (!*this_char)
+        char *p;
+
+        config.setuid  = 0;
+        config.setgid  = 0;
+        config.uid     = 0;
+        config.gid     = 0;
+        config.mode    = 0600;
+
+        while ((p = strsep(&data, ",")) != NULL) {
+                substring_t args[MAX_OPT_ARGS];
+                int token;
+                int option;
+
+                if (!*p)
                         continue;
-                if (sscanf(this_char, "uid=%i%c", &n, &dummy) == 1) {
-                        setuid = 1;
-                        uid = n;
-                } else if (sscanf(this_char, "gid=%i%c", &n, &dummy) == 1) {
-                        setgid = 1;
-                        gid = n;
-                } else if (sscanf(this_char, "mode=%o%c", &n, &dummy) == 1)
-                        mode = n & ~S_IFMT;
-                else {
-                        printk("devpts: called with bogus options\n");
+
+                token = match_token(p, tokens, args);
+                switch (token) {
+                case Opt_uid:
+                        if (match_int(&args[0], &option))
+                                return -EINVAL;
+                        config.uid = option;
+                        config.setuid = 1;
+                        break;
+                case Opt_gid:
+                        if (match_int(&args[0], &option))
+                                return -EINVAL;
+                        config.gid = option;
+                        config.setgid = 1;
+                        break;
+                case Opt_mode:
+                        if (match_octal(&args[0], &option))
+                                return -EINVAL;
+                        config.mode = option & ~S_IFMT;
+                        break;
+                default:
+                        printk(KERN_ERR "devpts: called with bogus options\n");
                         return -EINVAL;
                 }
         }
-        config.setuid  = setuid;
-        config.setgid  = setgid;
-        config.uid     = uid;
-        config.gid     = gid;
-        config.mode    = mode;
 
         return 0;
 }
diff --git a/fs/dquot.c b/fs/dquot.c
index 1966c890b48d..acf07e581f8c 100644
--- a/fs/dquot.c
+++ b/fs/dquot.c
@@ -103,12 +103,12 @@
  * (these locking rules also apply for S_NOQUOTA flag in the inode - note that
  * for altering the flag i_mutex is also needed).  If operation is holding
  * reference to dquot in other way (e.g. quotactl ops) it must be guarded by
- * dqonoff_sem.
+ * dqonoff_mutex.
  * This locking assures that:
  *   a) update/access to dquot pointers in inode is serialized
  *   b) everyone is guarded against invalidate_dquots()
  *
- * Each dquot has its dq_lock semaphore. Locked dquots might not be referenced
+ * Each dquot has its dq_lock mutex. Locked dquots might not be referenced
  * from inodes (dquot_alloc_space() and such don't check the dq_lock).
  * Currently dquot is locked only when it is being read to memory (or space for
  * it is being allocated) on the first dqget() and when it is being released on
@@ -118,9 +118,9 @@
  * spinlock to internal buffers before writing.
  *
  * Lock ordering (including related VFS locks) is the following:
- *   i_mutex > dqonoff_sem > iprune_sem > journal_lock > dqptr_sem >
- *   > dquot->dq_lock > dqio_sem
- * i_mutex on quota files is special (it's below dqio_sem)
+ *   i_mutex > dqonoff_sem > journal_lock > dqptr_sem > dquot->dq_lock >
+ *   dqio_mutex
+ * i_mutex on quota files is special (it's below dqio_mutex)
  */
 
 static DEFINE_SPINLOCK(dq_list_lock);
@@ -281,8 +281,8 @@ static inline void remove_inuse(struct dquot *dquot)
 
 static void wait_on_dquot(struct dquot *dquot)
 {
-        down(&dquot->dq_lock);
-        up(&dquot->dq_lock);
+        mutex_lock(&dquot->dq_lock);
+        mutex_unlock(&dquot->dq_lock);
 }
 
 #define mark_dquot_dirty(dquot) ((dquot)->dq_sb->dq_op->mark_dirty(dquot))
@@ -321,8 +321,8 @@ int dquot_acquire(struct dquot *dquot)
         int ret = 0, ret2 = 0;
         struct quota_info *dqopt = sb_dqopt(dquot->dq_sb);
 
-        down(&dquot->dq_lock);
-        down(&dqopt->dqio_sem);
+        mutex_lock(&dquot->dq_lock);
+        mutex_lock(&dqopt->dqio_mutex);
         if (!test_bit(DQ_READ_B, &dquot->dq_flags))
                 ret = dqopt->ops[dquot->dq_type]->read_dqblk(dquot);
         if (ret < 0)
@@ -343,8 +343,8 @@ int dquot_acquire(struct dquot *dquot)
         }
         set_bit(DQ_ACTIVE_B, &dquot->dq_flags);
 out_iolock:
-        up(&dqopt->dqio_sem);
-        up(&dquot->dq_lock);
+        mutex_unlock(&dqopt->dqio_mutex);
+        mutex_unlock(&dquot->dq_lock);
         return ret;
 }
 
@@ -356,7 +356,7 @@ int dquot_commit(struct dquot *dquot)
         int ret = 0, ret2 = 0;
         struct quota_info *dqopt = sb_dqopt(dquot->dq_sb);
 
-        down(&dqopt->dqio_sem);
+        mutex_lock(&dqopt->dqio_mutex);
         spin_lock(&dq_list_lock);
         if (!clear_dquot_dirty(dquot)) {
                 spin_unlock(&dq_list_lock);
@@ -373,7 +373,7 @@ int dquot_commit(struct dquot *dquot)
                         ret = ret2;
         }
 out_sem:
-        up(&dqopt->dqio_sem);
+        mutex_unlock(&dqopt->dqio_mutex);
         return ret;
 }
 
@@ -385,11 +385,11 @@ int dquot_release(struct dquot *dquot)
         int ret = 0, ret2 = 0;
         struct quota_info *dqopt = sb_dqopt(dquot->dq_sb);
 
-        down(&dquot->dq_lock);
+        mutex_lock(&dquot->dq_lock);
         /* Check whether we are not racing with some other dqget() */
         if (atomic_read(&dquot->dq_count) > 1)
                 goto out_dqlock;
-        down(&dqopt->dqio_sem);
+        mutex_lock(&dqopt->dqio_mutex);
         if (dqopt->ops[dquot->dq_type]->release_dqblk) {
                 ret = dqopt->ops[dquot->dq_type]->release_dqblk(dquot);
                 /* Write the info */
@@ -399,31 +399,57 @@ int dquot_release(struct dquot *dquot)
                         ret = ret2;
         }
         clear_bit(DQ_ACTIVE_B, &dquot->dq_flags);
-        up(&dqopt->dqio_sem);
+        mutex_unlock(&dqopt->dqio_mutex);
 out_dqlock:
-        up(&dquot->dq_lock);
+        mutex_unlock(&dquot->dq_lock);
         return ret;
 }
 
 /* Invalidate all dquots on the list. Note that this function is called after
  * quota is disabled and pointers from inodes removed so there cannot be new
- * quota users. Also because we hold dqonoff_sem there can be no quota users
- * for this sb+type at all. */
+ * quota users. There can still be some users of quotas due to inodes being
+ * just deleted or pruned by prune_icache() (those are not attached to any
+ * list). We have to wait for such users.
+ */
 static void invalidate_dquots(struct super_block *sb, int type)
 {
         struct dquot *dquot, *tmp;
 
+restart:
         spin_lock(&dq_list_lock);
         list_for_each_entry_safe(dquot, tmp, &inuse_list, dq_inuse) {
                 if (dquot->dq_sb != sb)
                         continue;
                 if (dquot->dq_type != type)
                         continue;
-#ifdef __DQUOT_PARANOIA
-                if (atomic_read(&dquot->dq_count))
-                        BUG();
-#endif
-                /* Quota now has no users and it has been written on last dqput() */
+                /* Wait for dquot users */
+                if (atomic_read(&dquot->dq_count)) {
+                        DEFINE_WAIT(wait);
+
+                        atomic_inc(&dquot->dq_count);
+                        prepare_to_wait(&dquot->dq_wait_unused, &wait,
+                                        TASK_UNINTERRUPTIBLE);
+                        spin_unlock(&dq_list_lock);
+                        /* Once dqput() wakes us up, we know it's time to free
+                         * the dquot.
+                         * IMPORTANT: we rely on the fact that there is always
+                         * at most one process waiting for dquot to free.
+                         * Otherwise dq_count would be > 1 and we would never
+                         * wake up.
+                         */
+                        if (atomic_read(&dquot->dq_count) > 1)
+                                schedule();
+                        finish_wait(&dquot->dq_wait_unused, &wait);
+                        dqput(dquot);
+                        /* At this moment dquot() need not exist (it could be
+                         * reclaimed by prune_dqcache(). Hence we must
+                         * restart. */
+                        goto restart;
+                }
+                /*
+                 * Quota now has no users and it has been written on last
+                 * dqput()
+                 */
                 remove_dquot_hash(dquot);
                 remove_free_dquot(dquot);
                 remove_inuse(dquot);
@@ -439,7 +465,7 @@ int vfs_quota_sync(struct super_block *sb, int type)
         struct quota_info *dqopt = sb_dqopt(sb);
         int cnt;
 
-        down(&dqopt->dqonoff_sem);
+        mutex_lock(&dqopt->dqonoff_mutex);
         for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
                 if (type != -1 && cnt != type)
                         continue;
@@ -474,7 +500,7 @@ int vfs_quota_sync(struct super_block *sb, int type)
         spin_lock(&dq_list_lock);
         dqstats.syncs++;
         spin_unlock(&dq_list_lock);
-        up(&dqopt->dqonoff_sem);
+        mutex_unlock(&dqopt->dqonoff_mutex);
 
         return 0;
 }
@@ -515,7 +541,7 @@ static int shrink_dqcache_memory(int nr, gfp_t gfp_mask)
 /*
  * Put reference to dquot
  * NOTE: If you change this function please check whether dqput_blocks() works right...
- * MUST be called with either dqptr_sem or dqonoff_sem held
+ * MUST be called with either dqptr_sem or dqonoff_mutex held
  */
 static void dqput(struct dquot *dquot)
 {
@@ -540,6 +566,10 @@ we_slept:
         if (atomic_read(&dquot->dq_count) > 1) {
                 /* We have more than one user... nothing to do */
                 atomic_dec(&dquot->dq_count);
+                /* Releasing dquot during quotaoff phase? */
+                if (!sb_has_quota_enabled(dquot->dq_sb, dquot->dq_type) &&
+                    atomic_read(&dquot->dq_count) == 1)
+                        wake_up(&dquot->dq_wait_unused);
                 spin_unlock(&dq_list_lock);
                 return;
         }
@@ -576,11 +606,12 @@ static struct dquot *get_empty_dquot(struct super_block *sb, int type)
                 return NODQUOT;
 
         memset((caddr_t)dquot, 0, sizeof(struct dquot));
-        sema_init(&dquot->dq_lock, 1);
+        mutex_init(&dquot->dq_lock);
         INIT_LIST_HEAD(&dquot->dq_free);
         INIT_LIST_HEAD(&dquot->dq_inuse);
         INIT_HLIST_NODE(&dquot->dq_hash);
         INIT_LIST_HEAD(&dquot->dq_dirty);
+        init_waitqueue_head(&dquot->dq_wait_unused);
         dquot->dq_sb = sb;
         dquot->dq_type = type;
         atomic_set(&dquot->dq_count, 1);
@@ -590,7 +621,7 @@ static struct dquot *get_empty_dquot(struct super_block *sb, int type)
 
 /*
  * Get reference to dquot
- * MUST be called with either dqptr_sem or dqonoff_sem held
+ * MUST be called with either dqptr_sem or dqonoff_mutex held
  */
 static struct dquot *dqget(struct super_block *sb, unsigned int id, int type)
 {
@@ -656,7 +687,7 @@ static int dqinit_needed(struct inode *inode, int type)
         return 0;
 }
 
-/* This routine is guarded by dqonoff_sem semaphore */
+/* This routine is guarded by dqonoff_mutex mutex */
 static void add_dquot_ref(struct super_block *sb, int type)
 {
         struct list_head *p;
@@ -732,13 +763,9 @@ static void drop_dquot_ref(struct super_block *sb, int type)
 {
         LIST_HEAD(tofree_head);
 
-        /* We need to be guarded against prune_icache to reach all the
-         * inodes - otherwise some can be on the local list of prune_icache */
-        down(&iprune_sem);
         down_write(&sb_dqopt(sb)->dqptr_sem);
         remove_dquot_ref(sb, type, &tofree_head);
         up_write(&sb_dqopt(sb)->dqptr_sem);
-        up(&iprune_sem);
         put_dquot_list(&tofree_head);
 }
 
@@ -938,8 +965,8 @@ int dquot_initialize(struct inode *inode, int type)
         unsigned int id = 0;
         int cnt, ret = 0;
 
-        /* First test before acquiring semaphore - solves deadlocks when we
-         * re-enter the quota code and are already holding the semaphore */
+        /* First test before acquiring mutex - solves deadlocks when we
+         * re-enter the quota code and are already holding the mutex */
         if (IS_NOQUOTA(inode))
                 return 0;
         down_write(&sb_dqopt(inode->i_sb)->dqptr_sem);
@@ -1002,8 +1029,8 @@ int dquot_alloc_space(struct inode *inode, qsize_t number, int warn)
         int cnt, ret = NO_QUOTA;
         char warntype[MAXQUOTAS];
 
-        /* First test before acquiring semaphore - solves deadlocks when we
-         * re-enter the quota code and are already holding the semaphore */
+        /* First test before acquiring mutex - solves deadlocks when we
+         * re-enter the quota code and are already holding the mutex */
         if (IS_NOQUOTA(inode)) {
 out_add:
                 inode_add_bytes(inode, number);
@@ -1051,8 +1078,8 @@ int dquot_alloc_inode(const struct inode *inode, unsigned long number)
         int cnt, ret = NO_QUOTA;
         char warntype[MAXQUOTAS];
 
-        /* First test before acquiring semaphore - solves deadlocks when we
-         * re-enter the quota code and are already holding the semaphore */
+        /* First test before acquiring mutex - solves deadlocks when we
+         * re-enter the quota code and are already holding the mutex */
         if (IS_NOQUOTA(inode))
                 return QUOTA_OK;
         for (cnt = 0; cnt < MAXQUOTAS; cnt++)
@@ -1095,8 +1122,8 @@ int dquot_free_space(struct inode *inode, qsize_t number)
 {
         unsigned int cnt;
 
-        /* First test before acquiring semaphore - solves deadlocks when we
-         * re-enter the quota code and are already holding the semaphore */
+        /* First test before acquiring mutex - solves deadlocks when we
+         * re-enter the quota code and are already holding the mutex */
         if (IS_NOQUOTA(inode)) {
 out_sub:
                 inode_sub_bytes(inode, number);
@@ -1131,8 +1158,8 @@ int dquot_free_inode(const struct inode *inode, unsigned long number)
 {
         unsigned int cnt;
 
-        /* First test before acquiring semaphore - solves deadlocks when we
-         * re-enter the quota code and are already holding the semaphore */
+        /* First test before acquiring mutex - solves deadlocks when we
+         * re-enter the quota code and are already holding the mutex */
         if (IS_NOQUOTA(inode))
                 return QUOTA_OK;
         down_read(&sb_dqopt(inode->i_sb)->dqptr_sem);
@@ -1171,8 +1198,8 @@ int dquot_transfer(struct inode *inode, struct iattr *iattr)
             chgid = (iattr->ia_valid & ATTR_GID) && inode->i_gid != iattr->ia_gid;
         char warntype[MAXQUOTAS];
 
-        /* First test before acquiring semaphore - solves deadlocks when we
-         * re-enter the quota code and are already holding the semaphore */
+        /* First test before acquiring mutex - solves deadlocks when we
+         * re-enter the quota code and are already holding the mutex */
         if (IS_NOQUOTA(inode))
                 return QUOTA_OK;
         /* Clear the arrays */
@@ -1266,9 +1293,9 @@ int dquot_commit_info(struct super_block *sb, int type)
         int ret;
         struct quota_info *dqopt = sb_dqopt(sb);
 
-        down(&dqopt->dqio_sem);
+        mutex_lock(&dqopt->dqio_mutex);
         ret = dqopt->ops[type]->write_file_info(sb, type);
-        up(&dqopt->dqio_sem);
+        mutex_unlock(&dqopt->dqio_mutex);
         return ret;
 }
 
@@ -1324,7 +1351,7 @@ int vfs_quota_off(struct super_block *sb, int type)
         struct inode *toputinode[MAXQUOTAS];
 
         /* We need to serialize quota_off() for device */
-        down(&dqopt->dqonoff_sem);
+        mutex_lock(&dqopt->dqonoff_mutex);
         for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
                 toputinode[cnt] = NULL;
                 if (type != -1 && cnt != type)
@@ -1353,7 +1380,7 @@ int vfs_quota_off(struct super_block *sb, int type)
                 dqopt->info[cnt].dqi_bgrace = 0;
                 dqopt->ops[cnt] = NULL;
         }
-        up(&dqopt->dqonoff_sem);
+        mutex_unlock(&dqopt->dqonoff_mutex);
         /* Sync the superblock so that buffers with quota data are written to
          * disk (and so userspace sees correct data afterwards). */
         if (sb->s_op->sync_fs)
@@ -1366,7 +1393,7 @@ int vfs_quota_off(struct super_block *sb, int type)
          * changes done by userspace on the next quotaon() */
         for (cnt = 0; cnt < MAXQUOTAS; cnt++)
                 if (toputinode[cnt]) {
-                        down(&dqopt->dqonoff_sem);
+                        mutex_lock(&dqopt->dqonoff_mutex);
                         /* If quota was reenabled in the meantime, we have
                          * nothing to do */
                         if (!sb_has_quota_enabled(sb, cnt)) {
@@ -1378,7 +1405,7 @@ int vfs_quota_off(struct super_block *sb, int type)
                                 mark_inode_dirty(toputinode[cnt]);
                                 iput(toputinode[cnt]);
                         }
-                        up(&dqopt->dqonoff_sem);
+                        mutex_unlock(&dqopt->dqonoff_mutex);
                 }
         if (sb->s_bdev)
                 invalidate_bdev(sb->s_bdev, 0);
@@ -1419,7 +1446,7 @@ static int vfs_quota_on_inode(struct inode *inode, int type, int format_id)
         /* And now flush the block cache so that kernel sees the changes */
         invalidate_bdev(sb->s_bdev, 0);
         mutex_lock(&inode->i_mutex);
-        down(&dqopt->dqonoff_sem);
+        mutex_lock(&dqopt->dqonoff_mutex);
         if (sb_has_quota_enabled(sb, type)) {
                 error = -EBUSY;
                 goto out_lock;
@@ -1444,17 +1471,17 @@ static int vfs_quota_on_inode(struct inode *inode, int type, int format_id)
         dqopt->ops[type] = fmt->qf_ops;
         dqopt->info[type].dqi_format = fmt;
         INIT_LIST_HEAD(&dqopt->info[type].dqi_dirty_list);
-        down(&dqopt->dqio_sem);
+        mutex_lock(&dqopt->dqio_mutex);
         if ((error = dqopt->ops[type]->read_file_info(sb, type)) < 0) {
-                up(&dqopt->dqio_sem);
+                mutex_unlock(&dqopt->dqio_mutex);
                 goto out_file_init;
         }
-        up(&dqopt->dqio_sem);
+        mutex_unlock(&dqopt->dqio_mutex);
         mutex_unlock(&inode->i_mutex);
         set_enable_flags(dqopt, type);
 
         add_dquot_ref(sb, type);
-        up(&dqopt->dqonoff_sem);
+        mutex_unlock(&dqopt->dqonoff_mutex);
 
         return 0;
 
@@ -1462,7 +1489,7 @@ out_file_init:
         dqopt->files[type] = NULL;
         iput(inode);
 out_lock:
-        up(&dqopt->dqonoff_sem);
+        mutex_unlock(&dqopt->dqonoff_mutex);
         if (oldflags != -1) {
                 down_write(&dqopt->dqptr_sem);
                 /* Set the flags back (in the case of accidental quotaon()
@@ -1550,14 +1577,14 @@ int vfs_get_dqblk(struct super_block *sb, int type, qid_t id, struct if_dqblk *d
 {
         struct dquot *dquot;
 
-        down(&sb_dqopt(sb)->dqonoff_sem);
+        mutex_lock(&sb_dqopt(sb)->dqonoff_mutex);
         if (!(dquot = dqget(sb, id, type))) {
-                up(&sb_dqopt(sb)->dqonoff_sem);
+                mutex_unlock(&sb_dqopt(sb)->dqonoff_mutex);
                 return -ESRCH;
         }
         do_get_dqblk(dquot, di);
         dqput(dquot);
-        up(&sb_dqopt(sb)->dqonoff_sem);
+        mutex_unlock(&sb_dqopt(sb)->dqonoff_mutex);
         return 0;
 }
 
@@ -1619,14 +1646,14 @@ int vfs_set_dqblk(struct super_block *sb, int type, qid_t id, struct if_dqblk *d
 {
         struct dquot *dquot;
 
-        down(&sb_dqopt(sb)->dqonoff_sem);
+        mutex_lock(&sb_dqopt(sb)->dqonoff_mutex);
         if (!(dquot = dqget(sb, id, type))) {
-                up(&sb_dqopt(sb)->dqonoff_sem);
+                mutex_unlock(&sb_dqopt(sb)->dqonoff_mutex);
                 return -ESRCH;
         }
         do_set_dqblk(dquot, di);
         dqput(dquot);
-        up(&sb_dqopt(sb)->dqonoff_sem);
+        mutex_unlock(&sb_dqopt(sb)->dqonoff_mutex);
         return 0;
 }
 
@@ -1635,9 +1662,9 @@ int vfs_get_dqinfo(struct super_block *sb, int type, struct if_dqinfo *ii)
 {
         struct mem_dqinfo *mi;
   
-        down(&sb_dqopt(sb)->dqonoff_sem);
+        mutex_lock(&sb_dqopt(sb)->dqonoff_mutex);
         if (!sb_has_quota_enabled(sb, type)) {
-                up(&sb_dqopt(sb)->dqonoff_sem);
+                mutex_unlock(&sb_dqopt(sb)->dqonoff_mutex);
                 return -ESRCH;
         }
         mi = sb_dqopt(sb)->info + type;
@@ -1647,7 +1674,7 @@ int vfs_get_dqinfo(struct super_block *sb, int type, struct if_dqinfo *ii)
         ii->dqi_flags = mi->dqi_flags & DQF_MASK;
         ii->dqi_valid = IIF_ALL;
         spin_unlock(&dq_data_lock);
-        up(&sb_dqopt(sb)->dqonoff_sem);
+        mutex_unlock(&sb_dqopt(sb)->dqonoff_mutex);
         return 0;
 }
 
@@ -1656,9 +1683,9 @@ int vfs_set_dqinfo(struct super_block *sb, int type, struct if_dqinfo *ii)
 {
         struct mem_dqinfo *mi;
 
-        down(&sb_dqopt(sb)->dqonoff_sem);
+        mutex_lock(&sb_dqopt(sb)->dqonoff_mutex);
         if (!sb_has_quota_enabled(sb, type)) {
-                up(&sb_dqopt(sb)->dqonoff_sem);
+                mutex_unlock(&sb_dqopt(sb)->dqonoff_mutex);
                 return -ESRCH;
         }
         mi = sb_dqopt(sb)->info + type;
@@ -1673,7 +1700,7 @@ int vfs_set_dqinfo(struct super_block *sb, int type, struct if_dqinfo *ii)
         mark_info_dirty(sb, type);
         /* Force write to disk */
         sb->dq_op->write_info(sb, type);
-        up(&sb_dqopt(sb)->dqonoff_sem);
+        mutex_unlock(&sb_dqopt(sb)->dqonoff_mutex);
         return 0;
 }
 
diff --git a/fs/eventpoll.c b/fs/eventpoll.c
index 4284cd31eba6..1c2b16fda13a 100644
--- a/fs/eventpoll.c
+++ b/fs/eventpoll.c
@@ -34,6 +34,7 @@
 #include <linux/eventpoll.h>
 #include <linux/mount.h>
 #include <linux/bitops.h>
+#include <linux/mutex.h>
 #include <asm/uaccess.h>
 #include <asm/system.h>
 #include <asm/io.h>
@@ -46,7 +47,7 @@
  * LOCKING:
  * There are three level of locking required by epoll :
  *
- * 1) epsem (semaphore)
+ * 1) epmutex (mutex)
  * 2) ep->sem (rw_semaphore)
  * 3) ep->lock (rw_lock)
  *
@@ -67,9 +68,9 @@
  * if a file has been pushed inside an epoll set and it is then
  * close()d without a previous call toepoll_ctl(EPOLL_CTL_DEL).
  * It is possible to drop the "ep->sem" and to use the global
- * semaphore "epsem" (together with "ep->lock") to have it working,
+ * semaphore "epmutex" (together with "ep->lock") to have it working,
  * but having "ep->sem" will make the interface more scalable.
- * Events that require holding "epsem" are very rare, while for
+ * Events that require holding "epmutex" are very rare, while for
  * normal operations the epoll private "ep->sem" will guarantee
  * a greater scalability.
  */
@@ -274,7 +275,7 @@ static struct super_block *eventpollfs_get_sb(struct file_system_type *fs_type,
 /*
  * This semaphore is used to serialize ep_free() and eventpoll_release_file().
  */
-static struct semaphore epsem;
+static struct mutex epmutex;
 
 /* Safe wake up implementation */
 static struct poll_safewake psw;
@@ -451,15 +452,6 @@ static void ep_poll_safewake(struct poll_safewake *psw, wait_queue_head_t *wq)
 }
 
 
-/* Used to initialize the epoll bits inside the "struct file" */
-void eventpoll_init_file(struct file *file)
-{
-
-        INIT_LIST_HEAD(&file->f_ep_links);
-        spin_lock_init(&file->f_ep_lock);
-}
-
-
 /*
  * This is called from eventpoll_release() to unlink files from the eventpoll
  * interface. We need to have this facility to cleanup correctly files that are
@@ -477,10 +469,10 @@ void eventpoll_release_file(struct file *file)
          * cleanup path, and this means that noone is using this file anymore.
          * The only hit might come from ep_free() but by holding the semaphore
          * will correctly serialize the operation. We do need to acquire
-         * "ep->sem" after "epsem" because ep_remove() requires it when called
+         * "ep->sem" after "epmutex" because ep_remove() requires it when called
          * from anywhere but ep_free().
          */
-        down(&epsem);
+        mutex_lock(&epmutex);
 
         while (!list_empty(lsthead)) {
                 epi = list_entry(lsthead->next, struct epitem, fllink);
@@ -492,7 +484,7 @@ void eventpoll_release_file(struct file *file)
                 up_write(&ep->sem);
         }
 
-        up(&epsem);
+        mutex_unlock(&epmutex);
 }
 
 
@@ -819,9 +811,9 @@ static void ep_free(struct eventpoll *ep)
          * We do not need to hold "ep->sem" here because the epoll file
          * is on the way to be removed and no one has references to it
          * anymore. The only hit might come from eventpoll_release_file() but
-         * holding "epsem" is sufficent here.
+         * holding "epmutex" is sufficent here.
          */
-        down(&epsem);
+        mutex_lock(&epmutex);
 
         /*
          * Walks through the whole tree by unregistering poll callbacks.
@@ -843,7 +835,7 @@ static void ep_free(struct eventpoll *ep)
                 ep_remove(ep, epi);
         }
 
-        up(&epsem);
+        mutex_unlock(&epmutex);
 }
 
 
@@ -1615,7 +1607,7 @@ static int __init eventpoll_init(void)
 {
         int error;
 
-        init_MUTEX(&epsem);
+        mutex_init(&epmutex);
 
         /* Initialize the structure used to perform safe poll wait head wake ups */
         ep_poll_safewake_init(&psw);
diff --git a/fs/ext2/namei.c b/fs/ext2/namei.c
index ad1432a2a62e..4ca824985321 100644
--- a/fs/ext2/namei.c
+++ b/fs/ext2/namei.c
@@ -36,22 +36,6 @@
 #include "acl.h"
 #include "xip.h"
 
-/*
- * Couple of helper functions - make the code slightly cleaner.
- */
-
-static inline void ext2_inc_count(struct inode *inode)
-{
-        inode->i_nlink++;
-        mark_inode_dirty(inode);
-}
-
-static inline void ext2_dec_count(struct inode *inode)
-{
-        inode->i_nlink--;
-        mark_inode_dirty(inode);
-}
-
 static inline int ext2_add_nondir(struct dentry *dentry, struct inode *inode)
 {
         int err = ext2_add_link(dentry, inode);
@@ -59,7 +43,7 @@ static inline int ext2_add_nondir(struct dentry *dentry, struct inode *inode)
                 d_instantiate(dentry, inode);
                 return 0;
         }
-        ext2_dec_count(inode);
+        inode_dec_link_count(inode);
         iput(inode);
         return err;
 }
@@ -201,7 +185,7 @@ out:
         return err;
 
 out_fail:
-        ext2_dec_count(inode);
+        inode_dec_link_count(inode);
         iput (inode);
         goto out;
 }
@@ -215,7 +199,7 @@ static int ext2_link (struct dentry * old_dentry, struct inode * dir,
                 return -EMLINK;
 
         inode->i_ctime = CURRENT_TIME_SEC;
-        ext2_inc_count(inode);
+        inode_inc_link_count(inode);
         atomic_inc(&inode->i_count);
 
         return ext2_add_nondir(dentry, inode);
@@ -229,7 +213,7 @@ static int ext2_mkdir(struct inode * dir, struct dentry * dentry, int mode)
         if (dir->i_nlink >= EXT2_LINK_MAX)
                 goto out;
 
-        ext2_inc_count(dir);
+        inode_inc_link_count(dir);
 
         inode = ext2_new_inode (dir, S_IFDIR | mode);
         err = PTR_ERR(inode);
@@ -243,7 +227,7 @@ static int ext2_mkdir(struct inode * dir, struct dentry * dentry, int mode)
         else
                 inode->i_mapping->a_ops = &ext2_aops;
 
-        ext2_inc_count(inode);
+        inode_inc_link_count(inode);
 
         err = ext2_make_empty(inode, dir);
         if (err)
@@ -258,11 +242,11 @@ out:
         return err;
 
 out_fail:
-        ext2_dec_count(inode);
-        ext2_dec_count(inode);
+        inode_dec_link_count(inode);
+        inode_dec_link_count(inode);
         iput(inode);
 out_dir:
-        ext2_dec_count(dir);
+        inode_dec_link_count(dir);
         goto out;
 }
 
@@ -282,7 +266,7 @@ static int ext2_unlink(struct inode * dir, struct dentry *dentry)
                 goto out;
 
         inode->i_ctime = dir->i_ctime;
-        ext2_dec_count(inode);
+        inode_dec_link_count(inode);
         err = 0;
 out:
         return err;
@@ -297,8 +281,8 @@ static int ext2_rmdir (struct inode * dir, struct dentry *dentry)
                 err = ext2_unlink(dir, dentry);
                 if (!err) {
                         inode->i_size = 0;
-                        ext2_dec_count(inode);
-                        ext2_dec_count(dir);
+                        inode_dec_link_count(inode);
+                        inode_dec_link_count(dir);
                 }
         }
         return err;
@@ -338,41 +322,41 @@ static int ext2_rename (struct inode * old_dir, struct dentry * old_dentry,
                 new_de = ext2_find_entry (new_dir, new_dentry, &new_page);
                 if (!new_de)
                         goto out_dir;
-                ext2_inc_count(old_inode);
+                inode_inc_link_count(old_inode);
                 ext2_set_link(new_dir, new_de, new_page, old_inode);
                 new_inode->i_ctime = CURRENT_TIME_SEC;
                 if (dir_de)
                         new_inode->i_nlink--;
-                ext2_dec_count(new_inode);
+                inode_dec_link_count(new_inode);
         } else {
                 if (dir_de) {
                         err = -EMLINK;
                         if (new_dir->i_nlink >= EXT2_LINK_MAX)
                                 goto out_dir;
                 }
-                ext2_inc_count(old_inode);
+                inode_inc_link_count(old_inode);
                 err = ext2_add_link(new_dentry, old_inode);
                 if (err) {
-                        ext2_dec_count(old_inode);
+                        inode_dec_link_count(old_inode);
                         goto out_dir;
                 }
                 if (dir_de)
-                        ext2_inc_count(new_dir);
+                        inode_inc_link_count(new_dir);
         }
 
         /*
          * Like most other Unix systems, set the ctime for inodes on a
          * rename.
-         * ext2_dec_count() will mark the inode dirty.
+         * inode_dec_link_count() will mark the inode dirty.
          */
         old_inode->i_ctime = CURRENT_TIME_SEC;
 
         ext2_delete_entry (old_de, old_page);
-        ext2_dec_count(old_inode);
+        inode_dec_link_count(old_inode);
 
         if (dir_de) {
                 ext2_set_link(old_inode, dir_de, dir_page, new_dir);
-                ext2_dec_count(old_dir);
+                inode_dec_link_count(old_dir);
         }
         return 0;
 
diff --git a/fs/ext3/dir.c b/fs/ext3/dir.c
index 832867aef3dc..773459164bb2 100644
--- a/fs/ext3/dir.c
+++ b/fs/ext3/dir.c
@@ -95,11 +95,10 @@ static int ext3_readdir(struct file * filp,
                          void * dirent, filldir_t filldir)
 {
         int error = 0;
-        unsigned long offset, blk;
-        int i, num, stored;
-        struct buffer_head * bh, * tmp, * bha[16];
-        struct ext3_dir_entry_2 * de;
-        struct super_block * sb;
+        unsigned long offset;
+        int i, stored;
+        struct ext3_dir_entry_2 *de;
+        struct super_block *sb;
         int err;
         struct inode *inode = filp->f_dentry->d_inode;
         int ret = 0;
@@ -124,12 +123,29 @@ static int ext3_readdir(struct file * filp,
         }
 #endif
         stored = 0;
-        bh = NULL;
         offset = filp->f_pos & (sb->s_blocksize - 1);
 
         while (!error && !stored && filp->f_pos < inode->i_size) {
-                blk = (filp->f_pos) >> EXT3_BLOCK_SIZE_BITS(sb);
-                bh = ext3_bread(NULL, inode, blk, 0, &err);
+                unsigned long blk = filp->f_pos >> EXT3_BLOCK_SIZE_BITS(sb);
+                struct buffer_head map_bh;
+                struct buffer_head *bh = NULL;
+
+                map_bh.b_state = 0;
+                err = ext3_get_block_handle(NULL, inode, blk, &map_bh, 0, 0);
+                if (!err) {
+                        page_cache_readahead(sb->s_bdev->bd_inode->i_mapping,
+                                &filp->f_ra,
+                                filp,
+                                map_bh.b_blocknr >>
+                                        (PAGE_CACHE_SHIFT - inode->i_blkbits),
+                                1);
+                        bh = ext3_bread(NULL, inode, blk, 0, &err);
+                }
+
+                /*
+                 * We ignore I/O errors on directories so users have a chance
+                 * of recovering data when there's a bad sector
+                 */
                 if (!bh) {
                         ext3_error (sb, "ext3_readdir",
                                 "directory #%lu contains a hole at offset %lu",
@@ -138,26 +154,6 @@ static int ext3_readdir(struct file * filp,
                         continue;
                 }
 
-                /*
-                 * Do the readahead
-                 */
-                if (!offset) {
-                        for (i = 16 >> (EXT3_BLOCK_SIZE_BITS(sb) - 9), num = 0;
-                             i > 0; i--) {
-                                tmp = ext3_getblk (NULL, inode, ++blk, 0, &err);
-                                if (tmp && !buffer_uptodate(tmp) &&
-                                                !buffer_locked(tmp))
-                                        bha[num++] = tmp;
-                                else
-                                        brelse (tmp);
-                        }
-                        if (num) {
-                                ll_rw_block (READA, num, bha);
-                                for (i = 0; i < num; i++)
-                                        brelse (bha[i]);
-                        }
-                }
-
 revalidate:
                 /* If the dir block has changed since the last call to
                  * readdir(2), then we might be pointing to an invalid
diff --git a/fs/ext3/file.c b/fs/ext3/file.c
index 98e78345ead9..59098ea56711 100644
--- a/fs/ext3/file.c
+++ b/fs/ext3/file.c
@@ -37,9 +37,9 @@ static int ext3_release_file (struct inode * inode, struct file * filp)
         if ((filp->f_mode & FMODE_WRITE) &&
                         (atomic_read(&inode->i_writecount) == 1))
         {
-                down(&EXT3_I(inode)->truncate_sem);
+                mutex_lock(&EXT3_I(inode)->truncate_mutex);
                 ext3_discard_reservation(inode);
-                up(&EXT3_I(inode)->truncate_sem);
+                mutex_unlock(&EXT3_I(inode)->truncate_mutex);
         }
         if (is_dx(inode) && filp->private_data)
                 ext3_htree_free_dir_info(filp->private_data);
diff --git a/fs/ext3/inode.c b/fs/ext3/inode.c
index 0384e539b88f..2c361377e0a5 100644
--- a/fs/ext3/inode.c
+++ b/fs/ext3/inode.c
@@ -671,7 +671,7 @@ err_out:
  * The BKL may not be held on entry here.  Be sure to take it early.
  */
 
-static int
+int
 ext3_get_block_handle(handle_t *handle, struct inode *inode, sector_t iblock,
                 struct buffer_head *bh_result, int create, int extend_disksize)
 {
@@ -702,7 +702,7 @@ ext3_get_block_handle(handle_t *handle, struct inode *inode, sector_t iblock,
         if (!create || err == -EIO)
                 goto cleanup;
 
-        down(&ei->truncate_sem);
+        mutex_lock(&ei->truncate_mutex);
 
         /*
          * If the indirect block is missing while we are reading
@@ -723,7 +723,7 @@ ext3_get_block_handle(handle_t *handle, struct inode *inode, sector_t iblock,
                 }
                 partial = ext3_get_branch(inode, depth, offsets, chain, &err);
                 if (!partial) {
-                        up(&ei->truncate_sem);
+                        mutex_unlock(&ei->truncate_mutex);
                         if (err)
                                 goto cleanup;
                         clear_buffer_new(bh_result);
@@ -759,13 +759,13 @@ ext3_get_block_handle(handle_t *handle, struct inode *inode, sector_t iblock,
                 err = ext3_splice_branch(handle, inode, iblock, chain,
                                          partial, left);
         /*
-         * i_disksize growing is protected by truncate_sem.  Don't forget to
+         * i_disksize growing is protected by truncate_mutex.  Don't forget to
          * protect it if you're about to implement concurrent
          * ext3_get_block() -bzzz
         */
         if (!err && extend_disksize && inode->i_size > ei->i_disksize)
                 ei->i_disksize = inode->i_size;
-        up(&ei->truncate_sem);
+        mutex_unlock(&ei->truncate_mutex);
         if (err)
                 goto cleanup;
 
@@ -1227,7 +1227,7 @@ static int journal_dirty_data_fn(handle_t *handle, struct buffer_head *bh)
  *      ext3_file_write() -> generic_file_write() -> __alloc_pages() -> ...
  *
  * Same applies to ext3_get_block().  We will deadlock on various things like
- * lock_journal and i_truncate_sem.
+ * lock_journal and i_truncate_mutex.
  *
  * Setting PF_MEMALLOC here doesn't work - too many internal memory
  * allocations fail.
@@ -2161,7 +2161,7 @@ void ext3_truncate(struct inode * inode)
          * From here we block out all ext3_get_block() callers who want to
          * modify the block allocation tree.
          */
-        down(&ei->truncate_sem);
+        mutex_lock(&ei->truncate_mutex);
 
         if (n == 1) {           /* direct blocks */
                 ext3_free_data(handle, inode, NULL, i_data+offsets[0],
@@ -2228,7 +2228,7 @@ do_indirects:
 
         ext3_discard_reservation(inode);
 
-        up(&ei->truncate_sem);
+        mutex_unlock(&ei->truncate_mutex);
         inode->i_mtime = inode->i_ctime = CURRENT_TIME_SEC;
         ext3_mark_inode_dirty(handle, inode);
 
diff --git a/fs/ext3/ioctl.c b/fs/ext3/ioctl.c
index 556cd5510078..aaf1da17b6d4 100644
--- a/fs/ext3/ioctl.c
+++ b/fs/ext3/ioctl.c
@@ -182,7 +182,7 @@ flags_err:
                  * need to allocate reservation structure for this inode
                  * before set the window size
                  */
-                down(&ei->truncate_sem);
+                mutex_lock(&ei->truncate_mutex);
                 if (!ei->i_block_alloc_info)
                         ext3_init_block_alloc_info(inode);
 
@@ -190,7 +190,7 @@ flags_err:
                         struct ext3_reserve_window_node *rsv = &ei->i_block_alloc_info->rsv_window_node;
                         rsv->rsv_goal_size = rsv_window_size;
                 }
-                up(&ei->truncate_sem);
+                mutex_unlock(&ei->truncate_mutex);
                 return 0;
         }
         case EXT3_IOC_GROUP_EXTEND: {
diff --git a/fs/ext3/super.c b/fs/ext3/super.c
index 56bf76586019..efe5b20d7a5a 100644
--- a/fs/ext3/super.c
+++ b/fs/ext3/super.c
@@ -472,7 +472,7 @@ static void init_once(void * foo, kmem_cache_t * cachep, unsigned long flags)
 #ifdef CONFIG_EXT3_FS_XATTR
                 init_rwsem(&ei->xattr_sem);
 #endif
-                init_MUTEX(&ei->truncate_sem);
+                mutex_init(&ei->truncate_mutex);
                 inode_init_once(&ei->vfs_inode);
         }
 }
@@ -2382,8 +2382,8 @@ static int ext3_statfs (struct super_block * sb, struct kstatfs * buf)
  * Process 1                         Process 2
  * ext3_create()                     quota_sync()
  *   journal_start()                   write_dquot()
- *   DQUOT_INIT()                        down(dqio_sem)
- *     down(dqio_sem)                    journal_start()
+ *   DQUOT_INIT()                        down(dqio_mutex)
+ *     down(dqio_mutex)                    journal_start()
  *
  */
 
diff --git a/fs/fat/dir.c b/fs/fat/dir.c
index db0de5c621c7..4095bc149eb1 100644
--- a/fs/fat/dir.c
+++ b/fs/fat/dir.c
@@ -114,7 +114,7 @@ static inline int fat_get_entry(struct inode *dir, loff_t *pos,
 }
 
 /*
- * Convert Unicode 16 to UTF8, translated Unicode, or ASCII.
+ * Convert Unicode 16 to UTF-8, translated Unicode, or ASCII.
  * If uni_xlate is enabled and we can't get a 1:1 conversion, use a
  * colon as an escape character since it is normally invalid on the vfat
  * filesystem. The following four characters are the hexadecimal digits
diff --git a/fs/fat/fatent.c b/fs/fat/fatent.c
index a1a9e0451217..ab171ea8e869 100644
--- a/fs/fat/fatent.c
+++ b/fs/fat/fatent.c
@@ -267,19 +267,19 @@ static struct fatent_operations fat32_ops = {
 
 static inline void lock_fat(struct msdos_sb_info *sbi)
 {
-        down(&sbi->fat_lock);
+        mutex_lock(&sbi->fat_lock);
 }
 
 static inline void unlock_fat(struct msdos_sb_info *sbi)
 {
-        up(&sbi->fat_lock);
+        mutex_unlock(&sbi->fat_lock);
 }
 
 void fat_ent_access_init(struct super_block *sb)
 {
         struct msdos_sb_info *sbi = MSDOS_SB(sb);
 
-        init_MUTEX(&sbi->fat_lock);
+        mutex_init(&sbi->fat_lock);
 
         switch (sbi->fat_bits) {
         case 32:
diff --git a/fs/fat/inode.c b/fs/fat/inode.c
index e7f4aa7fc686..e78d7b4842cc 100644
--- a/fs/fat/inode.c
+++ b/fs/fat/inode.c
@@ -1101,7 +1101,7 @@ static int parse_options(char *options, int is_vfat, int silent, int *debug,
                         return -EINVAL;
                 }
         }
-        /* UTF8 doesn't provide FAT semantics */
+        /* UTF-8 doesn't provide FAT semantics */
         if (!strcmp(opts->iocharset, "utf8")) {
                 printk(KERN_ERR "FAT: utf8 is not a recommended IO charset"
                        " for FAT filesystems, filesystem will be case sensitive!\n");
diff --git a/fs/fcntl.c b/fs/fcntl.c
index dc4a7007f4e7..03c789560fb8 100644
--- a/fs/fcntl.c
+++ b/fs/fcntl.c
@@ -73,8 +73,8 @@ repeat:
          * orig_start..fdt->next_fd
          */
         start = orig_start;
-        if (start < fdt->next_fd)
-                start = fdt->next_fd;
+        if (start < files->next_fd)
+                start = files->next_fd;
 
         newfd = start;
         if (start < fdt->max_fdset) {
@@ -102,9 +102,8 @@ repeat:
          * we reacquire the fdtable pointer and use it while holding
          * the lock, no one can free it during that time.
          */
-        fdt = files_fdtable(files);
-        if (start <= fdt->next_fd)
-                fdt->next_fd = newfd + 1;
+        if (start <= files->next_fd)
+                files->next_fd = newfd + 1;
 
         error = newfd;
         
diff --git a/fs/file.c b/fs/file.c
index cea7cbea11d0..bbc743314730 100644
--- a/fs/file.c
+++ b/fs/file.c
@@ -125,7 +125,8 @@ static void free_fdtable_rcu(struct rcu_head *rcu)
                 kmem_cache_free(files_cachep, fdt->free_files);
                 return;
         }
-        if (fdt->max_fdset <= __FD_SETSIZE && fdt->max_fds <= NR_OPEN_DEFAULT) {
+        if (fdt->max_fdset <= EMBEDDED_FD_SET_SIZE &&
+                fdt->max_fds <= NR_OPEN_DEFAULT) {
                 /*
                  * The fdtable was embedded
                  */
@@ -155,8 +156,9 @@ static void free_fdtable_rcu(struct rcu_head *rcu)
 
 void free_fdtable(struct fdtable *fdt)
 {
-        if (fdt->free_files || fdt->max_fdset > __FD_SETSIZE ||
-                                        fdt->max_fds > NR_OPEN_DEFAULT)
+        if (fdt->free_files ||
+                fdt->max_fdset > EMBEDDED_FD_SET_SIZE ||
+                fdt->max_fds > NR_OPEN_DEFAULT)
                 call_rcu(&fdt->rcu, free_fdtable_rcu);
 }
 
@@ -199,7 +201,6 @@ static void copy_fdtable(struct fdtable *nfdt, struct fdtable *fdt)
                        (nfdt->max_fds - fdt->max_fds) *
                                         sizeof(struct file *));
         }
-        nfdt->next_fd = fdt->next_fd;
 }
 
 /*
@@ -220,11 +221,9 @@ fd_set * alloc_fdset(int num)
 
 void free_fdset(fd_set *array, int num)
 {
-        int size = num / 8;
-
-        if (num <= __FD_SETSIZE) /* Don't free an embedded fdset */
+        if (num <= EMBEDDED_FD_SET_SIZE) /* Don't free an embedded fdset */
                 return;
-        else if (size <= PAGE_SIZE)
+        else if (num <= 8 * PAGE_SIZE)
                 kfree(array);
         else
                 vfree(array);
@@ -237,22 +236,17 @@ static struct fdtable *alloc_fdtable(int nr)
         fd_set *new_openset = NULL, *new_execset = NULL;
         struct file **new_fds;
 
-        fdt = kmalloc(sizeof(*fdt), GFP_KERNEL);
+        fdt = kzalloc(sizeof(*fdt), GFP_KERNEL);
         if (!fdt)
                 goto out;
-        memset(fdt, 0, sizeof(*fdt));
 
-        nfds = __FD_SETSIZE;
+        nfds = 8 * L1_CACHE_BYTES;
         /* Expand to the max in easy steps */
-        do {
-                if (nfds < (PAGE_SIZE * 8))
-                        nfds = PAGE_SIZE * 8;
-                else {
-                        nfds = nfds * 2;
-                        if (nfds > NR_OPEN)
-                                nfds = NR_OPEN;
-                }
-        } while (nfds <= nr);
+        while (nfds <= nr) {
+                nfds = nfds * 2;
+                if (nfds > NR_OPEN)
+                        nfds = NR_OPEN;
+        }
 
         new_openset = alloc_fdset(nfds);
         new_execset = alloc_fdset(nfds);
diff --git a/fs/file_table.c b/fs/file_table.c
index 44fabeaa9415..bcea1998b4de 100644
--- a/fs/file_table.c
+++ b/fs/file_table.c
@@ -88,6 +88,7 @@ int proc_nr_files(ctl_table *table, int write, struct file *filp,
  */
 struct file *get_empty_filp(void)
 {
+        struct task_struct *tsk;
         static int old_max;
         struct file * f;
 
@@ -112,13 +113,14 @@ struct file *get_empty_filp(void)
         if (security_file_alloc(f))
                 goto fail_sec;
 
-        eventpoll_init_file(f);
+        tsk = current;
+        INIT_LIST_HEAD(&f->f_u.fu_list);
         atomic_set(&f->f_count, 1);
-        f->f_uid = current->fsuid;
-        f->f_gid = current->fsgid;
         rwlock_init(&f->f_owner.lock);
+        f->f_uid = tsk->fsuid;
+        f->f_gid = tsk->fsgid;
+        eventpoll_init_file(f);
         /* f->f_version: 0 */
-        INIT_LIST_HEAD(&f->f_u.fu_list);
         return f;
 
 over:
diff --git a/fs/hpfs/hpfs_fn.h b/fs/hpfs/hpfs_fn.h
index 6628c3b352cb..4c6473ab3b34 100644
--- a/fs/hpfs/hpfs_fn.h
+++ b/fs/hpfs/hpfs_fn.h
@@ -9,6 +9,7 @@
 //#define DBG
 //#define DEBUG_LOCKS
 
+#include <linux/mutex.h>
 #include <linux/pagemap.h>
 #include <linux/buffer_head.h>
 #include <linux/hpfs_fs.h>
@@ -57,8 +58,8 @@ struct hpfs_inode_info {
         unsigned i_ea_uid : 1;  /* file's uid is stored in ea */
         unsigned i_ea_gid : 1;  /* file's gid is stored in ea */
         unsigned i_dirty : 1;
-        struct semaphore i_sem;
-        struct semaphore i_parent;
+        struct mutex i_mutex;
+        struct mutex i_parent_mutex;
         loff_t **i_rddir_off;
         struct inode vfs_inode;
 };
diff --git a/fs/hpfs/inode.c b/fs/hpfs/inode.c
index e3d17e9ea6c1..56f2c338c4d9 100644
--- a/fs/hpfs/inode.c
+++ b/fs/hpfs/inode.c
@@ -186,9 +186,9 @@ void hpfs_write_inode(struct inode *i)
                 kfree(hpfs_inode->i_rddir_off);
                 hpfs_inode->i_rddir_off = NULL;
         }
-        down(&hpfs_inode->i_parent);
+        mutex_lock(&hpfs_inode->i_parent_mutex);
         if (!i->i_nlink) {
-                up(&hpfs_inode->i_parent);
+                mutex_unlock(&hpfs_inode->i_parent_mutex);
                 return;
         }
         parent = iget_locked(i->i_sb, hpfs_inode->i_parent_dir);
@@ -199,14 +199,14 @@ void hpfs_write_inode(struct inode *i)
                         hpfs_read_inode(parent);
                         unlock_new_inode(parent);
                 }
-                down(&hpfs_inode->i_sem);
+                mutex_lock(&hpfs_inode->i_mutex);
                 hpfs_write_inode_nolock(i);
-                up(&hpfs_inode->i_sem);
+                mutex_unlock(&hpfs_inode->i_mutex);
                 iput(parent);
         } else {
                 mark_inode_dirty(i);
         }
-        up(&hpfs_inode->i_parent);
+        mutex_unlock(&hpfs_inode->i_parent_mutex);
 }
 
 void hpfs_write_inode_nolock(struct inode *i)
diff --git a/fs/hpfs/namei.c b/fs/hpfs/namei.c
index 8ff8fc433fc1..a03abb12c610 100644
--- a/fs/hpfs/namei.c
+++ b/fs/hpfs/namei.c
@@ -60,7 +60,7 @@ static int hpfs_mkdir(struct inode *dir, struct dentry *dentry, int mode)
         if (dee.read_only)
                 result->i_mode &= ~0222;
 
-        down(&hpfs_i(dir)->i_sem);
+        mutex_lock(&hpfs_i(dir)->i_mutex);
         r = hpfs_add_dirent(dir, (char *)name, len, &dee, 0);
         if (r == 1)
                 goto bail3;
@@ -101,11 +101,11 @@ static int hpfs_mkdir(struct inode *dir, struct dentry *dentry, int mode)
                 hpfs_write_inode_nolock(result);
         }
         d_instantiate(dentry, result);
-        up(&hpfs_i(dir)->i_sem);
+        mutex_unlock(&hpfs_i(dir)->i_mutex);
         unlock_kernel();
         return 0;
 bail3:
-        up(&hpfs_i(dir)->i_sem);
+        mutex_unlock(&hpfs_i(dir)->i_mutex);
         iput(result);
 bail2:
         hpfs_brelse4(&qbh0);
@@ -168,7 +168,7 @@ static int hpfs_create(struct inode *dir, struct dentry *dentry, int mode, struc
         result->i_data.a_ops = &hpfs_aops;
         hpfs_i(result)->mmu_private = 0;
 
-        down(&hpfs_i(dir)->i_sem);
+        mutex_lock(&hpfs_i(dir)->i_mutex);
         r = hpfs_add_dirent(dir, (char *)name, len, &dee, 0);
         if (r == 1)
                 goto bail2;
@@ -193,12 +193,12 @@ static int hpfs_create(struct inode *dir, struct dentry *dentry, int mode, struc
                 hpfs_write_inode_nolock(result);
         }
         d_instantiate(dentry, result);
-        up(&hpfs_i(dir)->i_sem);
+        mutex_unlock(&hpfs_i(dir)->i_mutex);
         unlock_kernel();
         return 0;
 
 bail2:
-        up(&hpfs_i(dir)->i_sem);
+        mutex_unlock(&hpfs_i(dir)->i_mutex);
         iput(result);
 bail1:
         brelse(bh);
@@ -254,7 +254,7 @@ static int hpfs_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t
         result->i_blocks = 1;
         init_special_inode(result, mode, rdev);
 
-        down(&hpfs_i(dir)->i_sem);
+        mutex_lock(&hpfs_i(dir)->i_mutex);
         r = hpfs_add_dirent(dir, (char *)name, len, &dee, 0);
         if (r == 1)
                 goto bail2;
@@ -271,12 +271,12 @@ static int hpfs_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t
 
         hpfs_write_inode_nolock(result);
         d_instantiate(dentry, result);
-        up(&hpfs_i(dir)->i_sem);
+        mutex_unlock(&hpfs_i(dir)->i_mutex);
         brelse(bh);
         unlock_kernel();
         return 0;
 bail2:
-        up(&hpfs_i(dir)->i_sem);
+        mutex_unlock(&hpfs_i(dir)->i_mutex);
         iput(result);
 bail1:
         brelse(bh);
@@ -333,7 +333,7 @@ static int hpfs_symlink(struct inode *dir, struct dentry *dentry, const char *sy
         result->i_op = &page_symlink_inode_operations;
         result->i_data.a_ops = &hpfs_symlink_aops;
 
-        down(&hpfs_i(dir)->i_sem);
+        mutex_lock(&hpfs_i(dir)->i_mutex);
         r = hpfs_add_dirent(dir, (char *)name, len, &dee, 0);
         if (r == 1)
                 goto bail2;
@@ -352,11 +352,11 @@ static int hpfs_symlink(struct inode *dir, struct dentry *dentry, const char *sy
 
         hpfs_write_inode_nolock(result);
         d_instantiate(dentry, result);
-        up(&hpfs_i(dir)->i_sem);
+        mutex_unlock(&hpfs_i(dir)->i_mutex);
         unlock_kernel();
         return 0;
 bail2:
-        up(&hpfs_i(dir)->i_sem);
+        mutex_unlock(&hpfs_i(dir)->i_mutex);
         iput(result);
 bail1:
         brelse(bh);
@@ -382,8 +382,8 @@ static int hpfs_unlink(struct inode *dir, struct dentry *dentry)
         lock_kernel();
         hpfs_adjust_length((char *)name, &len);
 again:
-        down(&hpfs_i(inode)->i_parent);
-        down(&hpfs_i(dir)->i_sem);
+        mutex_lock(&hpfs_i(inode)->i_parent_mutex);
+        mutex_lock(&hpfs_i(dir)->i_mutex);
         err = -ENOENT;
         de = map_dirent(dir, hpfs_i(dir)->i_dno, (char *)name, len, &dno, &qbh);
         if (!de)
@@ -410,8 +410,8 @@ again:
                 if (rep++)
                         break;
 
-                up(&hpfs_i(dir)->i_sem);
-                up(&hpfs_i(inode)->i_parent);
+                mutex_unlock(&hpfs_i(dir)->i_mutex);
+                mutex_unlock(&hpfs_i(inode)->i_parent_mutex);
                 d_drop(dentry);
                 spin_lock(&dentry->d_lock);
                 if (atomic_read(&dentry->d_count) > 1 ||
@@ -442,8 +442,8 @@ again:
 out1:
         hpfs_brelse4(&qbh);
 out:
-        up(&hpfs_i(dir)->i_sem);
-        up(&hpfs_i(inode)->i_parent);
+        mutex_unlock(&hpfs_i(dir)->i_mutex);
+        mutex_unlock(&hpfs_i(inode)->i_parent_mutex);
         unlock_kernel();
         return err;
 }
@@ -463,8 +463,8 @@ static int hpfs_rmdir(struct inode *dir, struct dentry *dentry)
 
         hpfs_adjust_length((char *)name, &len);
         lock_kernel();
-        down(&hpfs_i(inode)->i_parent);
-        down(&hpfs_i(dir)->i_sem);
+        mutex_lock(&hpfs_i(inode)->i_parent_mutex);
+        mutex_lock(&hpfs_i(dir)->i_mutex);
         err = -ENOENT;
         de = map_dirent(dir, hpfs_i(dir)->i_dno, (char *)name, len, &dno, &qbh);
         if (!de)
@@ -502,8 +502,8 @@ static int hpfs_rmdir(struct inode *dir, struct dentry *dentry)
 out1:
         hpfs_brelse4(&qbh);
 out:
-        up(&hpfs_i(dir)->i_sem);
-        up(&hpfs_i(inode)->i_parent);
+        mutex_unlock(&hpfs_i(dir)->i_mutex);
+        mutex_unlock(&hpfs_i(inode)->i_parent_mutex);
         unlock_kernel();
         return err;
 }
@@ -565,12 +565,12 @@ static int hpfs_rename(struct inode *old_dir, struct dentry *old_dentry,
 
         lock_kernel();
         /* order doesn't matter, due to VFS exclusion */
-        down(&hpfs_i(i)->i_parent);
+        mutex_lock(&hpfs_i(i)->i_parent_mutex);
         if (new_inode)
-                down(&hpfs_i(new_inode)->i_parent);
-        down(&hpfs_i(old_dir)->i_sem);
+                mutex_lock(&hpfs_i(new_inode)->i_parent_mutex);
+        mutex_lock(&hpfs_i(old_dir)->i_mutex);
         if (new_dir != old_dir)
-                down(&hpfs_i(new_dir)->i_sem);
+                mutex_lock(&hpfs_i(new_dir)->i_mutex);
         
         /* Erm? Moving over the empty non-busy directory is perfectly legal */
         if (new_inode && S_ISDIR(new_inode->i_mode)) {
@@ -650,11 +650,11 @@ static int hpfs_rename(struct inode *old_dir, struct dentry *old_dentry,
         hpfs_decide_conv(i, (char *)new_name, new_len);
 end1:
         if (old_dir != new_dir)
-                up(&hpfs_i(new_dir)->i_sem);
-        up(&hpfs_i(old_dir)->i_sem);
-        up(&hpfs_i(i)->i_parent);
+                mutex_unlock(&hpfs_i(new_dir)->i_mutex);
+        mutex_unlock(&hpfs_i(old_dir)->i_mutex);
+        mutex_unlock(&hpfs_i(i)->i_parent_mutex);
         if (new_inode)
-                up(&hpfs_i(new_inode)->i_parent);
+                mutex_unlock(&hpfs_i(new_inode)->i_parent_mutex);
         unlock_kernel();
         return err;
 }
diff --git a/fs/hpfs/super.c b/fs/hpfs/super.c
index 63e88d7e2c3b..9488a794076e 100644
--- a/fs/hpfs/super.c
+++ b/fs/hpfs/super.c
@@ -181,8 +181,8 @@ static void init_once(void * foo, kmem_cache_t * cachep, unsigned long flags)
 
         if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR)) ==
             SLAB_CTOR_CONSTRUCTOR) {
-                init_MUTEX(&ei->i_sem);
-                init_MUTEX(&ei->i_parent);
+                mutex_init(&ei->i_mutex);
+                mutex_init(&ei->i_parent_mutex);
                 inode_init_once(&ei->vfs_inode);
         }
 }
diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c
index b35195289945..25fa8bba8cb5 100644
--- a/fs/hugetlbfs/inode.c
+++ b/fs/hugetlbfs/inode.c
@@ -56,48 +56,10 @@ static void huge_pagevec_release(struct pagevec *pvec)
         pagevec_reinit(pvec);
 }
 
-/*
- * huge_pages_needed tries to determine the number of new huge pages that
- * will be required to fully populate this VMA.  This will be equal to
- * the size of the VMA in huge pages minus the number of huge pages
- * (covered by this VMA) that are found in the page cache.
- *
- * Result is in bytes to be compatible with is_hugepage_mem_enough()
- */
-static unsigned long
-huge_pages_needed(struct address_space *mapping, struct vm_area_struct *vma)
-{
-        int i;
-        struct pagevec pvec;
-        unsigned long start = vma->vm_start;
-        unsigned long end = vma->vm_end;
-        unsigned long hugepages = (end - start) >> HPAGE_SHIFT;
-        pgoff_t next = vma->vm_pgoff >> (HPAGE_SHIFT - PAGE_SHIFT);
-        pgoff_t endpg = next + hugepages;
-
-        pagevec_init(&pvec, 0);
-        while (next < endpg) {
-                if (!pagevec_lookup(&pvec, mapping, next, PAGEVEC_SIZE))
-                        break;
-                for (i = 0; i < pagevec_count(&pvec); i++) {
-                        struct page *page = pvec.pages[i];
-                        if (page->index > next)
-                                next = page->index;
-                        if (page->index >= endpg)
-                                break;
-                        next++;
-                        hugepages--;
-                }
-                huge_pagevec_release(&pvec);
-        }
-        return hugepages << HPAGE_SHIFT;
-}
-
 static int hugetlbfs_file_mmap(struct file *file, struct vm_area_struct *vma)
 {
         struct inode *inode = file->f_dentry->d_inode;
-        struct address_space *mapping = inode->i_mapping;
-        unsigned long bytes;
+        struct hugetlbfs_inode_info *info = HUGETLBFS_I(inode);
         loff_t len, vma_len;
         int ret;
 
@@ -113,10 +75,6 @@ static int hugetlbfs_file_mmap(struct file *file, struct vm_area_struct *vma)
         if (vma->vm_end - vma->vm_start < HPAGE_SIZE)
                 return -EINVAL;
 
-        bytes = huge_pages_needed(mapping, vma);
-        if (!is_hugepage_mem_enough(bytes))
-                return -ENOMEM;
-
         vma_len = (loff_t)(vma->vm_end - vma->vm_start);
 
         mutex_lock(&inode->i_mutex);
@@ -129,6 +87,10 @@ static int hugetlbfs_file_mmap(struct file *file, struct vm_area_struct *vma)
         if (!(vma->vm_flags & VM_WRITE) && len > inode->i_size)
                 goto out;
 
+        if (vma->vm_flags & VM_MAYSHARE)
+                if (hugetlb_extend_reservation(info, len >> HPAGE_SHIFT) != 0)
+                        goto out;
+
         ret = 0;
         hugetlb_prefault_arch_hook(vma->vm_mm);
         if (inode->i_size < len)
@@ -227,13 +189,18 @@ static void truncate_huge_page(struct page *page)
         put_page(page);
 }
 
-static void truncate_hugepages(struct address_space *mapping, loff_t lstart)
+static void truncate_hugepages(struct inode *inode, loff_t lstart)
 {
+        struct address_space *mapping = &inode->i_data;
         const pgoff_t start = lstart >> HPAGE_SHIFT;
         struct pagevec pvec;
         pgoff_t next;
         int i;
 
+        hugetlb_truncate_reservation(HUGETLBFS_I(inode),
+                                     lstart >> HPAGE_SHIFT);
+        if (!mapping->nrpages)
+                return;
         pagevec_init(&pvec, 0);
         next = start;
         while (1) {
@@ -262,8 +229,7 @@ static void truncate_hugepages(struct address_space *mapping, loff_t lstart)
 
 static void hugetlbfs_delete_inode(struct inode *inode)
 {
-        if (inode->i_data.nrpages)
-                truncate_hugepages(&inode->i_data, 0);
+        truncate_hugepages(inode, 0);
         clear_inode(inode);
 }
 
@@ -296,8 +262,7 @@ static void hugetlbfs_forget_inode(struct inode *inode)
         inode->i_state |= I_FREEING;
         inodes_stat.nr_inodes--;
         spin_unlock(&inode_lock);
-        if (inode->i_data.nrpages)
-                truncate_hugepages(&inode->i_data, 0);
+        truncate_hugepages(inode, 0);
         clear_inode(inode);
         destroy_inode(inode);
 }
@@ -356,7 +321,7 @@ static int hugetlb_vmtruncate(struct inode *inode, loff_t offset)
         if (!prio_tree_empty(&mapping->i_mmap))
                 hugetlb_vmtruncate_list(&mapping->i_mmap, pgoff);
         spin_unlock(&mapping->i_mmap_lock);
-        truncate_hugepages(mapping, offset);
+        truncate_hugepages(inode, offset);
         return 0;
 }
 
@@ -573,6 +538,7 @@ static struct inode *hugetlbfs_alloc_inode(struct super_block *sb)
                 hugetlbfs_inc_free_inodes(sbinfo);
                 return NULL;
         }
+        p->prereserved_hpages = 0;
         return &p->vfs_inode;
 }
 
@@ -771,21 +737,6 @@ static struct file_system_type hugetlbfs_fs_type = {
 
 static struct vfsmount *hugetlbfs_vfsmount;
 
-/*
- * Return the next identifier for a shm file
- */
-static unsigned long hugetlbfs_counter(void)
-{
-        static DEFINE_SPINLOCK(lock);
-        static unsigned long counter;
-        unsigned long ret;
-
-        spin_lock(&lock);
-        ret = ++counter;
-        spin_unlock(&lock);
-        return ret;
-}
-
 static int can_do_hugetlb_shm(void)
 {
         return likely(capable(CAP_IPC_LOCK) ||
@@ -801,18 +752,16 @@ struct file *hugetlb_zero_setup(size_t size)
         struct dentry *dentry, *root;
         struct qstr quick_string;
         char buf[16];
+        static atomic_t counter;
 
         if (!can_do_hugetlb_shm())
                 return ERR_PTR(-EPERM);
 
-        if (!is_hugepage_mem_enough(size))
-                return ERR_PTR(-ENOMEM);
-
         if (!user_shm_lock(size, current->user))
                 return ERR_PTR(-ENOMEM);
 
         root = hugetlbfs_vfsmount->mnt_root;
-        snprintf(buf, 16, "%lu", hugetlbfs_counter());
+        snprintf(buf, 16, "%u", atomic_inc_return(&counter));
         quick_string.name = buf;
         quick_string.len = strlen(quick_string.name);
         quick_string.hash = 0;
@@ -831,6 +780,11 @@ struct file *hugetlb_zero_setup(size_t size)
         if (!inode)
                 goto out_file;
 
+        error = -ENOMEM;
+        if (hugetlb_extend_reservation(HUGETLBFS_I(inode),
+                                       size >> HPAGE_SHIFT) != 0)
+                goto out_inode;
+
         d_instantiate(dentry, inode);
         inode->i_size = size;
         inode->i_nlink = 0;
@@ -841,6 +795,8 @@ struct file *hugetlb_zero_setup(size_t size)
         file->f_mode = FMODE_WRITE | FMODE_READ;
         return file;
 
+out_inode:
+        iput(inode);
 out_file:
         put_filp(file);
 out_dentry:
diff --git a/fs/inode.c b/fs/inode.c
index d0be6159eb7f..25967b67903d 100644
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -84,14 +84,14 @@ static struct hlist_head *inode_hashtable;
 DEFINE_SPINLOCK(inode_lock);
 
 /*
- * iprune_sem provides exclusion between the kswapd or try_to_free_pages
+ * iprune_mutex provides exclusion between the kswapd or try_to_free_pages
  * icache shrinking path, and the umount path.  Without this exclusion,
  * by the time prune_icache calls iput for the inode whose pages it has
  * been invalidating, or by the time it calls clear_inode & destroy_inode
  * from its final dispose_list, the struct super_block they refer to
  * (for inode->i_sb->s_op) may already have been freed and reused.
  */
-DECLARE_MUTEX(iprune_sem);
+DEFINE_MUTEX(iprune_mutex);
 
 /*
  * Statistics gathering..
@@ -206,7 +206,7 @@ void inode_init_once(struct inode *inode)
         i_size_ordered_init(inode);
 #ifdef CONFIG_INOTIFY
         INIT_LIST_HEAD(&inode->inotify_watches);
-        sema_init(&inode->inotify_sem, 1);
+        mutex_init(&inode->inotify_mutex);
 #endif
 }
 
@@ -319,7 +319,7 @@ static int invalidate_list(struct list_head *head, struct list_head *dispose)
                 /*
                  * We can reschedule here without worrying about the list's
                  * consistency because the per-sb list of inodes must not
-                 * change during umount anymore, and because iprune_sem keeps
+                 * change during umount anymore, and because iprune_mutex keeps
                  * shrink_icache_memory() away.
                  */
                 cond_resched_lock(&inode_lock);
@@ -355,14 +355,14 @@ int invalidate_inodes(struct super_block * sb)
         int busy;
         LIST_HEAD(throw_away);
 
-        down(&iprune_sem);
+        mutex_lock(&iprune_mutex);
         spin_lock(&inode_lock);
         inotify_unmount_inodes(&sb->s_inodes);
         busy = invalidate_list(&sb->s_inodes, &throw_away);
         spin_unlock(&inode_lock);
 
         dispose_list(&throw_away);
-        up(&iprune_sem);
+        mutex_unlock(&iprune_mutex);
 
         return busy;
 }
@@ -377,7 +377,7 @@ int __invalidate_device(struct block_device *bdev)
         if (sb) {
                 /*
                  * no need to lock the super, get_super holds the
-                 * read semaphore so the filesystem cannot go away
+                 * read mutex so the filesystem cannot go away
                  * under us (->put_super runs with the write lock
                  * hold).
                  */
@@ -423,7 +423,7 @@ static void prune_icache(int nr_to_scan)
         int nr_scanned;
         unsigned long reap = 0;
 
-        down(&iprune_sem);
+        mutex_lock(&iprune_mutex);
         spin_lock(&inode_lock);
         for (nr_scanned = 0; nr_scanned < nr_to_scan; nr_scanned++) {
                 struct inode *inode;
@@ -459,7 +459,7 @@ static void prune_icache(int nr_to_scan)
         spin_unlock(&inode_lock);
 
         dispose_list(&freeable);
-        up(&iprune_sem);
+        mutex_unlock(&iprune_mutex);
 
         if (current_is_kswapd())
                 mod_page_state(kswapd_inodesteal, reap);
diff --git a/fs/inotify.c b/fs/inotify.c
index 3041503bde02..0ee39ef591c6 100644
--- a/fs/inotify.c
+++ b/fs/inotify.c
@@ -54,10 +54,10 @@ int inotify_max_queued_events;
  * Lock ordering:
  *
  * dentry->d_lock (used to keep d_move() away from dentry->d_parent)
- * iprune_sem (synchronize shrink_icache_memory())
+ * iprune_mutex (synchronize shrink_icache_memory())
  *      inode_lock (protects the super_block->s_inodes list)
- *      inode->inotify_sem (protects inode->inotify_watches and watches->i_list)
- *              inotify_dev->sem (protects inotify_device and watches->d_list)
+ *      inode->inotify_mutex (protects inode->inotify_watches and watches->i_list)
+ *              inotify_dev->mutex (protects inotify_device and watches->d_list)
  */
 
 /*
@@ -79,12 +79,12 @@ int inotify_max_queued_events;
 /*
  * struct inotify_device - represents an inotify instance
  *
- * This structure is protected by the semaphore 'sem'.
+ * This structure is protected by the mutex 'mutex'.
  */
 struct inotify_device {
         wait_queue_head_t       wq;             /* wait queue for i/o */
         struct idr              idr;            /* idr mapping wd -> watch */
-        struct semaphore        sem;            /* protects this bad boy */
+        struct mutex            mutex;          /* protects this bad boy */
         struct list_head        events;         /* list of queued events */
         struct list_head        watches;        /* list of watches */
         atomic_t                count;          /* reference count */
@@ -101,7 +101,7 @@ struct inotify_device {
  * device.  In read(), this list is walked and all events that can fit in the
  * buffer are returned.
  *
- * Protected by dev->sem of the device in which we are queued.
+ * Protected by dev->mutex of the device in which we are queued.
  */
 struct inotify_kernel_event {
         struct inotify_event    event;  /* the user-space event */
@@ -112,8 +112,8 @@ struct inotify_kernel_event {
 /*
  * struct inotify_watch - represents a watch request on a specific inode
  *
- * d_list is protected by dev->sem of the associated watch->dev.
- * i_list and mask are protected by inode->inotify_sem of the associated inode.
+ * d_list is protected by dev->mutex of the associated watch->dev.
+ * i_list and mask are protected by inode->inotify_mutex of the associated inode.
  * dev, inode, and wd are never written to once the watch is created.
  */
 struct inotify_watch {
@@ -261,7 +261,7 @@ static struct inotify_kernel_event * kernel_event(s32 wd, u32 mask, u32 cookie,
 /*
  * inotify_dev_get_event - return the next event in the given dev's queue
  *
- * Caller must hold dev->sem.
+ * Caller must hold dev->mutex.
  */
 static inline struct inotify_kernel_event *
 inotify_dev_get_event(struct inotify_device *dev)
@@ -272,7 +272,7 @@ inotify_dev_get_event(struct inotify_device *dev)
 /*
  * inotify_dev_queue_event - add a new event to the given device
  *
- * Caller must hold dev->sem.  Can sleep (calls kernel_event()).
+ * Caller must hold dev->mutex.  Can sleep (calls kernel_event()).
  */
 static void inotify_dev_queue_event(struct inotify_device *dev,
                                     struct inotify_watch *watch, u32 mask,
@@ -315,7 +315,7 @@ static void inotify_dev_queue_event(struct inotify_device *dev,
 /*
  * remove_kevent - cleans up and ultimately frees the given kevent
  *
- * Caller must hold dev->sem.
+ * Caller must hold dev->mutex.
  */
 static void remove_kevent(struct inotify_device *dev,
                           struct inotify_kernel_event *kevent)
@@ -332,7 +332,7 @@ static void remove_kevent(struct inotify_device *dev,
 /*
  * inotify_dev_event_dequeue - destroy an event on the given device
  *
- * Caller must hold dev->sem.
+ * Caller must hold dev->mutex.
  */
 static void inotify_dev_event_dequeue(struct inotify_device *dev)
 {
@@ -346,7 +346,7 @@ static void inotify_dev_event_dequeue(struct inotify_device *dev)
 /*
  * inotify_dev_get_wd - returns the next WD for use by the given dev
  *
- * Callers must hold dev->sem.  This function can sleep.
+ * Callers must hold dev->mutex.  This function can sleep.
  */
 static int inotify_dev_get_wd(struct inotify_device *dev,
                               struct inotify_watch *watch)
@@ -383,7 +383,7 @@ static int find_inode(const char __user *dirname, struct nameidata *nd,
 /*
  * create_watch - creates a watch on the given device.
  *
- * Callers must hold dev->sem.  Calls inotify_dev_get_wd() so may sleep.
+ * Callers must hold dev->mutex.  Calls inotify_dev_get_wd() so may sleep.
  * Both 'dev' and 'inode' (by way of nameidata) need to be pinned.
  */
 static struct inotify_watch *create_watch(struct inotify_device *dev,
@@ -434,7 +434,7 @@ static struct inotify_watch *create_watch(struct inotify_device *dev,
 /*
  * inotify_find_dev - find the watch associated with the given inode and dev
  *
- * Callers must hold inode->inotify_sem.
+ * Callers must hold inode->inotify_mutex.
  */
 static struct inotify_watch *inode_find_dev(struct inode *inode,
                                             struct inotify_device *dev)
@@ -469,7 +469,7 @@ static void remove_watch_no_event(struct inotify_watch *watch,
  * the IN_IGNORED event to the given device signifying that the inode is no
  * longer watched.
  *
- * Callers must hold both inode->inotify_sem and dev->sem.  We drop a
+ * Callers must hold both inode->inotify_mutex and dev->mutex.  We drop a
  * reference to the inode before returning.
  *
  * The inode is not iput() so as to remain atomic.  If the inode needs to be
@@ -507,21 +507,21 @@ void inotify_inode_queue_event(struct inode *inode, u32 mask, u32 cookie,
         if (!inotify_inode_watched(inode))
                 return;
 
-        down(&inode->inotify_sem);
+        mutex_lock(&inode->inotify_mutex);
         list_for_each_entry_safe(watch, next, &inode->inotify_watches, i_list) {
                 u32 watch_mask = watch->mask;
                 if (watch_mask & mask) {
                         struct inotify_device *dev = watch->dev;
                         get_inotify_watch(watch);
-                        down(&dev->sem);
+                        mutex_lock(&dev->mutex);
                         inotify_dev_queue_event(dev, watch, mask, cookie, name);
                         if (watch_mask & IN_ONESHOT)
                                 remove_watch_no_event(watch, dev);
-                        up(&dev->sem);
+                        mutex_unlock(&dev->mutex);
                         put_inotify_watch(watch);
                 }
         }
-        up(&inode->inotify_sem);
+        mutex_unlock(&inode->inotify_mutex);
 }
 EXPORT_SYMBOL_GPL(inotify_inode_queue_event);
 
@@ -569,7 +569,7 @@ EXPORT_SYMBOL_GPL(inotify_get_cookie);
  * @list: list of inodes being unmounted (sb->s_inodes)
  *
  * Called with inode_lock held, protecting the unmounting super block's list
- * of inodes, and with iprune_sem held, keeping shrink_icache_memory() at bay.
+ * of inodes, and with iprune_mutex held, keeping shrink_icache_memory() at bay.
  * We temporarily drop inode_lock, however, and CAN block.
  */
 void inotify_unmount_inodes(struct list_head *list)
@@ -618,7 +618,7 @@ void inotify_unmount_inodes(struct list_head *list)
                  * We can safely drop inode_lock here because we hold
                  * references on both inode and next_i.  Also no new inodes
                  * will be added since the umount has begun.  Finally,
-                 * iprune_sem keeps shrink_icache_memory() away.
+                 * iprune_mutex keeps shrink_icache_memory() away.
                  */
                 spin_unlock(&inode_lock);
 
@@ -626,16 +626,16 @@ void inotify_unmount_inodes(struct list_head *list)
                         iput(need_iput_tmp);
 
                 /* for each watch, send IN_UNMOUNT and then remove it */
-                down(&inode->inotify_sem);
+                mutex_lock(&inode->inotify_mutex);
                 watches = &inode->inotify_watches;
                 list_for_each_entry_safe(watch, next_w, watches, i_list) {
                         struct inotify_device *dev = watch->dev;
-                        down(&dev->sem);
+                        mutex_lock(&dev->mutex);
                         inotify_dev_queue_event(dev, watch, IN_UNMOUNT,0,NULL);
                         remove_watch(watch, dev);
-                        up(&dev->sem);
+                        mutex_unlock(&dev->mutex);
                 }
-                up(&inode->inotify_sem);
+                mutex_unlock(&inode->inotify_mutex);
                 iput(inode);            
 
                 spin_lock(&inode_lock);
@@ -651,14 +651,14 @@ void inotify_inode_is_dead(struct inode *inode)
 {
         struct inotify_watch *watch, *next;
 
-        down(&inode->inotify_sem);
+        mutex_lock(&inode->inotify_mutex);
         list_for_each_entry_safe(watch, next, &inode->inotify_watches, i_list) {
                 struct inotify_device *dev = watch->dev;
-                down(&dev->sem);
+                mutex_lock(&dev->mutex);
                 remove_watch(watch, dev);
-                up(&dev->sem);
+                mutex_unlock(&dev->mutex);
         }
-        up(&inode->inotify_sem);
+        mutex_unlock(&inode->inotify_mutex);
 }
 EXPORT_SYMBOL_GPL(inotify_inode_is_dead);
 
@@ -670,10 +670,10 @@ static unsigned int inotify_poll(struct file *file, poll_table *wait)
         int ret = 0;
 
         poll_wait(file, &dev->wq, wait);
-        down(&dev->sem);
+        mutex_lock(&dev->mutex);
         if (!list_empty(&dev->events))
                 ret = POLLIN | POLLRDNORM;
-        up(&dev->sem);
+        mutex_unlock(&dev->mutex);
 
         return ret;
 }
@@ -695,9 +695,9 @@ static ssize_t inotify_read(struct file *file, char __user *buf,
 
                 prepare_to_wait(&dev->wq, &wait, TASK_INTERRUPTIBLE);
 
-                down(&dev->sem);
+                mutex_lock(&dev->mutex);
                 events = !list_empty(&dev->events);
-                up(&dev->sem);
+                mutex_unlock(&dev->mutex);
                 if (events) {
                         ret = 0;
                         break;
@@ -720,7 +720,7 @@ static ssize_t inotify_read(struct file *file, char __user *buf,
         if (ret)
                 return ret;
 
-        down(&dev->sem);
+        mutex_lock(&dev->mutex);
         while (1) {
                 struct inotify_kernel_event *kevent;
 
@@ -750,7 +750,7 @@ static ssize_t inotify_read(struct file *file, char __user *buf,
 
                 remove_kevent(dev, kevent);
         }
-        up(&dev->sem);
+        mutex_unlock(&dev->mutex);
 
         return ret;
 }
@@ -763,37 +763,37 @@ static int inotify_release(struct inode *ignored, struct file *file)
          * Destroy all of the watches on this device.  Unfortunately, not very
          * pretty.  We cannot do a simple iteration over the list, because we
          * do not know the inode until we iterate to the watch.  But we need to
-         * hold inode->inotify_sem before dev->sem.  The following works.
+         * hold inode->inotify_mutex before dev->mutex.  The following works.
          */
         while (1) {
                 struct inotify_watch *watch;
                 struct list_head *watches;
                 struct inode *inode;
 
-                down(&dev->sem);
+                mutex_lock(&dev->mutex);
                 watches = &dev->watches;
                 if (list_empty(watches)) {
-                        up(&dev->sem);
+                        mutex_unlock(&dev->mutex);
                         break;
                 }
                 watch = list_entry(watches->next, struct inotify_watch, d_list);
                 get_inotify_watch(watch);
-                up(&dev->sem);
+                mutex_unlock(&dev->mutex);
 
                 inode = watch->inode;
-                down(&inode->inotify_sem);
-                down(&dev->sem);
+                mutex_lock(&inode->inotify_mutex);
+                mutex_lock(&dev->mutex);
                 remove_watch_no_event(watch, dev);
-                up(&dev->sem);
-                up(&inode->inotify_sem);
+                mutex_unlock(&dev->mutex);
+                mutex_unlock(&inode->inotify_mutex);
                 put_inotify_watch(watch);
         }
 
         /* destroy all of the events on this device */
-        down(&dev->sem);
+        mutex_lock(&dev->mutex);
         while (!list_empty(&dev->events))
                 inotify_dev_event_dequeue(dev);
-        up(&dev->sem);
+        mutex_unlock(&dev->mutex);
 
         /* free this device: the put matching the get in inotify_init() */
         put_inotify_dev(dev);
@@ -811,26 +811,26 @@ static int inotify_ignore(struct inotify_device *dev, s32 wd)
         struct inotify_watch *watch;
         struct inode *inode;
 
-        down(&dev->sem);
+        mutex_lock(&dev->mutex);
         watch = idr_find(&dev->idr, wd);
         if (unlikely(!watch)) {
-                up(&dev->sem);
+                mutex_unlock(&dev->mutex);
                 return -EINVAL;
         }
         get_inotify_watch(watch);
         inode = watch->inode;
-        up(&dev->sem);
+        mutex_unlock(&dev->mutex);
 
-        down(&inode->inotify_sem);
-        down(&dev->sem);
+        mutex_lock(&inode->inotify_mutex);
+        mutex_lock(&dev->mutex);
 
         /* make sure that we did not race */
         watch = idr_find(&dev->idr, wd);
         if (likely(watch))
                 remove_watch(watch, dev);
 
-        up(&dev->sem);
-        up(&inode->inotify_sem);
+        mutex_unlock(&dev->mutex);
+        mutex_unlock(&inode->inotify_mutex);
         put_inotify_watch(watch);
 
         return 0;
@@ -905,7 +905,7 @@ asmlinkage long sys_inotify_init(void)
         INIT_LIST_HEAD(&dev->events);
         INIT_LIST_HEAD(&dev->watches);
         init_waitqueue_head(&dev->wq);
-        sema_init(&dev->sem, 1);
+        mutex_init(&dev->mutex);
         dev->event_count = 0;
         dev->queue_size = 0;
         dev->max_events = inotify_max_queued_events;
@@ -960,8 +960,8 @@ asmlinkage long sys_inotify_add_watch(int fd, const char __user *path, u32 mask)
         inode = nd.dentry->d_inode;
         dev = filp->private_data;
 
-        down(&inode->inotify_sem);
-        down(&dev->sem);
+        mutex_lock(&inode->inotify_mutex);
+        mutex_lock(&dev->mutex);
 
         if (mask & IN_MASK_ADD)
                 mask_add = 1;
@@ -998,8 +998,8 @@ asmlinkage long sys_inotify_add_watch(int fd, const char __user *path, u32 mask)
         list_add(&watch->i_list, &inode->inotify_watches);
         ret = watch->wd;
 out:
-        up(&dev->sem);
-        up(&inode->inotify_sem);
+        mutex_unlock(&dev->mutex);
+        mutex_unlock(&inode->inotify_mutex);
         path_release(&nd);
 fput_and_out:
         fput_light(filp, fput_needed);
diff --git a/fs/isofs/joliet.c b/fs/isofs/joliet.c
index 2931de7f1a6a..81a90e170ac3 100644
--- a/fs/isofs/joliet.c
+++ b/fs/isofs/joliet.c
@@ -11,7 +11,7 @@
 #include "isofs.h"
 
 /*
- * Convert Unicode 16 to UTF8 or ASCII.
+ * Convert Unicode 16 to UTF-8 or ASCII.
  */
 static int
 uni16_to_x8(unsigned char *ascii, u16 *uni, int len, struct nls_table *nls)
diff --git a/fs/jbd/checkpoint.c b/fs/jbd/checkpoint.c
index 543ed543d1e5..3f5102b069db 100644
--- a/fs/jbd/checkpoint.c
+++ b/fs/jbd/checkpoint.c
@@ -85,7 +85,7 @@ void __log_wait_for_space(journal_t *journal)
                 if (journal->j_flags & JFS_ABORT)
                         return;
                 spin_unlock(&journal->j_state_lock);
-                down(&journal->j_checkpoint_sem);
+                mutex_lock(&journal->j_checkpoint_mutex);
 
                 /*
                  * Test again, another process may have checkpointed while we
@@ -98,7 +98,7 @@ void __log_wait_for_space(journal_t *journal)
                         log_do_checkpoint(journal);
                         spin_lock(&journal->j_state_lock);
                 }
-                up(&journal->j_checkpoint_sem);
+                mutex_unlock(&journal->j_checkpoint_mutex);
         }
 }
 
diff --git a/fs/jbd/journal.c b/fs/jbd/journal.c
index e4b516ac4989..95a628d8cac8 100644
--- a/fs/jbd/journal.c
+++ b/fs/jbd/journal.c
@@ -659,8 +659,8 @@ static journal_t * journal_init_common (void)
         init_waitqueue_head(&journal->j_wait_checkpoint);
         init_waitqueue_head(&journal->j_wait_commit);
         init_waitqueue_head(&journal->j_wait_updates);
-        init_MUTEX(&journal->j_barrier);
-        init_MUTEX(&journal->j_checkpoint_sem);
+        mutex_init(&journal->j_barrier);
+        mutex_init(&journal->j_checkpoint_mutex);
         spin_lock_init(&journal->j_revoke_lock);
         spin_lock_init(&journal->j_list_lock);
         spin_lock_init(&journal->j_state_lock);
diff --git a/fs/jbd/transaction.c b/fs/jbd/transaction.c
index ca917973c2c0..5fc40888f4cf 100644
--- a/fs/jbd/transaction.c
+++ b/fs/jbd/transaction.c
@@ -455,7 +455,7 @@ void journal_lock_updates(journal_t *journal)
          * to make sure that we serialise special journal-locked operations
          * too.
          */
-        down(&journal->j_barrier);
+        mutex_lock(&journal->j_barrier);
 }
 
 /**
@@ -470,7 +470,7 @@ void journal_unlock_updates (journal_t *journal)
 {
         J_ASSERT(journal->j_barrier_count != 0);
 
-        up(&journal->j_barrier);
+        mutex_unlock(&journal->j_barrier);
         spin_lock(&journal->j_state_lock);
         --journal->j_barrier_count;
         spin_unlock(&journal->j_state_lock);
diff --git a/fs/jffs/inode-v23.c b/fs/jffs/inode-v23.c
index fc3855a1aef3..890d7ff7456d 100644
--- a/fs/jffs/inode-v23.c
+++ b/fs/jffs/inode-v23.c
@@ -42,7 +42,7 @@
 #include <linux/quotaops.h>
 #include <linux/highmem.h>
 #include <linux/vfs.h>
-#include <asm/semaphore.h>
+#include <linux/mutex.h>
 #include <asm/byteorder.h>
 #include <asm/uaccess.h>
 
@@ -203,7 +203,7 @@ jffs_setattr(struct dentry *dentry, struct iattr *iattr)
         fmc = c->fmc;
 
         D3(printk (KERN_NOTICE "notify_change(): down biglock\n"));
-        down(&fmc->biglock);
+        mutex_lock(&fmc->biglock);
 
         f = jffs_find_file(c, inode->i_ino);
 
@@ -211,7 +211,7 @@ jffs_setattr(struct dentry *dentry, struct iattr *iattr)
                 printk("jffs_setattr(): Invalid inode number: %lu\n",
                        inode->i_ino);
                 D3(printk (KERN_NOTICE "notify_change(): up biglock\n"));
-                up(&fmc->biglock);
+                mutex_unlock(&fmc->biglock);
                 res = -EINVAL;
                 goto out;
         });
@@ -232,7 +232,7 @@ jffs_setattr(struct dentry *dentry, struct iattr *iattr)
         if (!(new_node = jffs_alloc_node())) {
                 D(printk("jffs_setattr(): Allocation failed!\n"));
                 D3(printk (KERN_NOTICE "notify_change(): up biglock\n"));
-                up(&fmc->biglock);
+                mutex_unlock(&fmc->biglock);
                 res = -ENOMEM;
                 goto out;
         }
@@ -319,7 +319,7 @@ jffs_setattr(struct dentry *dentry, struct iattr *iattr)
                 D(printk("jffs_notify_change(): The write failed!\n"));
                 jffs_free_node(new_node);
                 D3(printk (KERN_NOTICE "n_c(): up biglock\n"));
-                up(&c->fmc->biglock);
+                mutex_unlock(&c->fmc->biglock);
                 goto out;
         }
 
@@ -327,7 +327,7 @@ jffs_setattr(struct dentry *dentry, struct iattr *iattr)
 
         mark_inode_dirty(inode);
         D3(printk (KERN_NOTICE "n_c(): up biglock\n"));
-        up(&c->fmc->biglock);
+        mutex_unlock(&c->fmc->biglock);
 out:
         unlock_kernel();
         return res;
@@ -461,7 +461,7 @@ jffs_rename(struct inode *old_dir, struct dentry *old_dentry,
                 goto jffs_rename_end;
         }
         D3(printk (KERN_NOTICE "rename(): down biglock\n"));
-        down(&c->fmc->biglock);
+        mutex_lock(&c->fmc->biglock);
         /* Create a node and initialize as much as needed.  */
         result = -ENOMEM;
         if (!(node = jffs_alloc_node())) {
@@ -555,7 +555,7 @@ jffs_rename(struct inode *old_dir, struct dentry *old_dentry,
 
 jffs_rename_end:
         D3(printk (KERN_NOTICE "rename(): up biglock\n"));
-        up(&c->fmc->biglock);
+        mutex_unlock(&c->fmc->biglock);
         unlock_kernel();
         return result;
 } /* jffs_rename()  */
@@ -574,14 +574,14 @@ jffs_readdir(struct file *filp, void *dirent, filldir_t filldir)
         int ddino;
         lock_kernel();
         D3(printk (KERN_NOTICE "readdir(): down biglock\n"));
-        down(&c->fmc->biglock);
+        mutex_lock(&c->fmc->biglock);
 
         D2(printk("jffs_readdir(): inode: 0x%p, filp: 0x%p\n", inode, filp));
         if (filp->f_pos == 0) {
                 D3(printk("jffs_readdir(): \".\" %lu\n", inode->i_ino));
                 if (filldir(dirent, ".", 1, filp->f_pos, inode->i_ino, DT_DIR) < 0) {
                         D3(printk (KERN_NOTICE "readdir(): up biglock\n"));
-                        up(&c->fmc->biglock);
+                        mutex_unlock(&c->fmc->biglock);
                         unlock_kernel();
                         return 0;
                 }
@@ -598,7 +598,7 @@ jffs_readdir(struct file *filp, void *dirent, filldir_t filldir)
                 D3(printk("jffs_readdir(): \"..\" %u\n", ddino));
                 if (filldir(dirent, "..", 2, filp->f_pos, ddino, DT_DIR) < 0) {
                         D3(printk (KERN_NOTICE "readdir(): up biglock\n"));
-                        up(&c->fmc->biglock);
+                        mutex_unlock(&c->fmc->biglock);
                         unlock_kernel();
                         return 0;
                 }
@@ -617,7 +617,7 @@ jffs_readdir(struct file *filp, void *dirent, filldir_t filldir)
                 if (filldir(dirent, f->name, f->nsize,
                             filp->f_pos , f->ino, DT_UNKNOWN) < 0) {
                         D3(printk (KERN_NOTICE "readdir(): up biglock\n"));
-                        up(&c->fmc->biglock);
+                        mutex_unlock(&c->fmc->biglock);
                         unlock_kernel();
                         return 0;
                 }
@@ -627,7 +627,7 @@ jffs_readdir(struct file *filp, void *dirent, filldir_t filldir)
                 } while(f && f->deleted);
         }
         D3(printk (KERN_NOTICE "readdir(): up biglock\n"));
-        up(&c->fmc->biglock);
+        mutex_unlock(&c->fmc->biglock);
         unlock_kernel();
         return filp->f_pos;
 } /* jffs_readdir()  */
@@ -660,7 +660,7 @@ jffs_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
         });
 
         D3(printk (KERN_NOTICE "lookup(): down biglock\n"));
-        down(&c->fmc->biglock);
+        mutex_lock(&c->fmc->biglock);
 
         r = -ENAMETOOLONG;
         if (len > JFFS_MAX_NAME_LEN) {
@@ -683,31 +683,31 @@ jffs_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
 
         if ((len == 1) && (name[0] == '.')) {
                 D3(printk (KERN_NOTICE "lookup(): up biglock\n"));
-                up(&c->fmc->biglock);
+                mutex_unlock(&c->fmc->biglock);
                 if (!(inode = iget(dir->i_sb, d->ino))) {
                         D(printk("jffs_lookup(): . iget() ==> NULL\n"));
                         goto jffs_lookup_end_no_biglock;
                 }
                 D3(printk (KERN_NOTICE "lookup(): down biglock\n"));
-                down(&c->fmc->biglock);
+                mutex_lock(&c->fmc->biglock);
         } else if ((len == 2) && (name[0] == '.') && (name[1] == '.')) {
                 D3(printk (KERN_NOTICE "lookup(): up biglock\n"));
-                up(&c->fmc->biglock);
+                mutex_unlock(&c->fmc->biglock);
                 if (!(inode = iget(dir->i_sb, d->pino))) {
                         D(printk("jffs_lookup(): .. iget() ==> NULL\n"));
                         goto jffs_lookup_end_no_biglock;
                 }
                 D3(printk (KERN_NOTICE "lookup(): down biglock\n"));
-                down(&c->fmc->biglock);
+                mutex_lock(&c->fmc->biglock);
         } else if ((f = jffs_find_child(d, name, len))) {
                 D3(printk (KERN_NOTICE "lookup(): up biglock\n"));
-                up(&c->fmc->biglock);
+                mutex_unlock(&c->fmc->biglock);
                 if (!(inode = iget(dir->i_sb, f->ino))) {
                         D(printk("jffs_lookup(): iget() ==> NULL\n"));
                         goto jffs_lookup_end_no_biglock;
                 }
                 D3(printk (KERN_NOTICE "lookup(): down biglock\n"));
-                down(&c->fmc->biglock);
+                mutex_lock(&c->fmc->biglock);
         } else {
                 D3(printk("jffs_lookup(): Couldn't find the file. "
                           "f = 0x%p, name = \"%s\", d = 0x%p, d->ino = %u\n",
@@ -717,13 +717,13 @@ jffs_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
 
         d_add(dentry, inode);
         D3(printk (KERN_NOTICE "lookup(): up biglock\n"));
-        up(&c->fmc->biglock);
+        mutex_unlock(&c->fmc->biglock);
         unlock_kernel();
         return NULL;
 
 jffs_lookup_end:
         D3(printk (KERN_NOTICE "lookup(): up biglock\n"));
-        up(&c->fmc->biglock);
+        mutex_unlock(&c->fmc->biglock);
 
 jffs_lookup_end_no_biglock:
         unlock_kernel();
@@ -753,7 +753,7 @@ jffs_do_readpage_nolock(struct file *file, struct page *page)
         ClearPageError(page);
 
         D3(printk (KERN_NOTICE "readpage(): down biglock\n"));
-        down(&c->fmc->biglock);
+        mutex_lock(&c->fmc->biglock);
 
         read_len = 0;
         result = 0;
@@ -782,7 +782,7 @@ jffs_do_readpage_nolock(struct file *file, struct page *page)
         kunmap(page);
 
         D3(printk (KERN_NOTICE "readpage(): up biglock\n"));
-        up(&c->fmc->biglock);
+        mutex_unlock(&c->fmc->biglock);
 
         if (result) {
                 SetPageError(page);
@@ -839,7 +839,7 @@ jffs_mkdir(struct inode *dir, struct dentry *dentry, int mode)
 
         c = dir_f->c;
         D3(printk (KERN_NOTICE "mkdir(): down biglock\n"));
-        down(&c->fmc->biglock);
+        mutex_lock(&c->fmc->biglock);
 
         dir_mode = S_IFDIR | (mode & (S_IRWXUGO|S_ISVTX)
                               & ~current->fs->umask);
@@ -906,7 +906,7 @@ jffs_mkdir(struct inode *dir, struct dentry *dentry, int mode)
         result = 0;
 jffs_mkdir_end:
         D3(printk (KERN_NOTICE "mkdir(): up biglock\n"));
-        up(&c->fmc->biglock);
+        mutex_unlock(&c->fmc->biglock);
         unlock_kernel();
         return result;
 } /* jffs_mkdir()  */
@@ -921,10 +921,10 @@ jffs_rmdir(struct inode *dir, struct dentry *dentry)
         D3(printk("***jffs_rmdir()\n"));
         D3(printk (KERN_NOTICE "rmdir(): down biglock\n"));
         lock_kernel();
-        down(&c->fmc->biglock);
+        mutex_lock(&c->fmc->biglock);
         ret = jffs_remove(dir, dentry, S_IFDIR);
         D3(printk (KERN_NOTICE "rmdir(): up biglock\n"));
-        up(&c->fmc->biglock);
+        mutex_unlock(&c->fmc->biglock);
         unlock_kernel();
         return ret;
 }
@@ -940,10 +940,10 @@ jffs_unlink(struct inode *dir, struct dentry *dentry)
         lock_kernel();
         D3(printk("***jffs_unlink()\n"));
         D3(printk (KERN_NOTICE "unlink(): down biglock\n"));
-        down(&c->fmc->biglock);
+        mutex_lock(&c->fmc->biglock);
         ret = jffs_remove(dir, dentry, 0);
         D3(printk (KERN_NOTICE "unlink(): up biglock\n"));
-        up(&c->fmc->biglock);
+        mutex_unlock(&c->fmc->biglock);
         unlock_kernel();
         return ret;
 }
@@ -1086,7 +1086,7 @@ jffs_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t rdev)
         c = dir_f->c;
 
         D3(printk (KERN_NOTICE "mknod(): down biglock\n"));
-        down(&c->fmc->biglock);
+        mutex_lock(&c->fmc->biglock);
 
         /* Create and initialize a new node.  */
         if (!(node = jffs_alloc_node())) {
@@ -1152,7 +1152,7 @@ jffs_mknod_err:
 
 jffs_mknod_end:
         D3(printk (KERN_NOTICE "mknod(): up biglock\n"));
-        up(&c->fmc->biglock);
+        mutex_unlock(&c->fmc->biglock);
         unlock_kernel();
         return result;
 } /* jffs_mknod()  */
@@ -1203,7 +1203,7 @@ jffs_symlink(struct inode *dir, struct dentry *dentry, const char *symname)
                 return -ENOMEM;
         }
         D3(printk (KERN_NOTICE "symlink(): down biglock\n"));
-        down(&c->fmc->biglock);
+        mutex_lock(&c->fmc->biglock);
 
         node->data_offset = 0;
         node->removed_size = 0;
@@ -1253,7 +1253,7 @@ jffs_symlink(struct inode *dir, struct dentry *dentry, const char *symname)
         d_instantiate(dentry, inode);
  jffs_symlink_end:
         D3(printk (KERN_NOTICE "symlink(): up biglock\n"));
-        up(&c->fmc->biglock);
+        mutex_unlock(&c->fmc->biglock);
         unlock_kernel();
         return err;
 } /* jffs_symlink()  */
@@ -1306,7 +1306,7 @@ jffs_create(struct inode *dir, struct dentry *dentry, int mode,
                 return -ENOMEM;
         }
         D3(printk (KERN_NOTICE "create(): down biglock\n"));
-        down(&c->fmc->biglock);
+        mutex_lock(&c->fmc->biglock);
 
         node->data_offset = 0;
         node->removed_size = 0;
@@ -1359,7 +1359,7 @@ jffs_create(struct inode *dir, struct dentry *dentry, int mode,
         d_instantiate(dentry, inode);
  jffs_create_end:
         D3(printk (KERN_NOTICE "create(): up biglock\n"));
-        up(&c->fmc->biglock);
+        mutex_unlock(&c->fmc->biglock);
         unlock_kernel();
         return err;
 } /* jffs_create()  */
@@ -1423,7 +1423,7 @@ jffs_file_write(struct file *filp, const char *buf, size_t count,
         thiscount = min(c->fmc->max_chunk_size - sizeof(struct jffs_raw_inode), count);
 
         D3(printk (KERN_NOTICE "file_write(): down biglock\n"));
-        down(&c->fmc->biglock);
+        mutex_lock(&c->fmc->biglock);
 
         /* Urgh. POSIX says we can do short writes if we feel like it. 
          * In practice, we can't. Nothing will cope. So we loop until
@@ -1511,7 +1511,7 @@ jffs_file_write(struct file *filp, const char *buf, size_t count,
         }
  out:
         D3(printk (KERN_NOTICE "file_write(): up biglock\n"));
-        up(&c->fmc->biglock);
+        mutex_unlock(&c->fmc->biglock);
 
         /* Fix things in the real inode.  */
         if (pos > inode->i_size) {
@@ -1567,7 +1567,7 @@ jffs_ioctl(struct inode *inode, struct file *filp, unsigned int cmd,
                 return -EIO;
         }
         D3(printk (KERN_NOTICE "ioctl(): down biglock\n"));
-        down(&c->fmc->biglock);
+        mutex_lock(&c->fmc->biglock);
 
         switch (cmd) {
         case JFFS_PRINT_HASH:
@@ -1609,7 +1609,7 @@ jffs_ioctl(struct inode *inode, struct file *filp, unsigned int cmd,
                 ret = -ENOTTY;
         }
         D3(printk (KERN_NOTICE "ioctl(): up biglock\n"));
-        up(&c->fmc->biglock);
+        mutex_unlock(&c->fmc->biglock);
         return ret;
 } /* jffs_ioctl()  */
 
@@ -1685,12 +1685,12 @@ jffs_read_inode(struct inode *inode)
         }
         c = (struct jffs_control *)inode->i_sb->s_fs_info;
         D3(printk (KERN_NOTICE "read_inode(): down biglock\n"));
-        down(&c->fmc->biglock);
+        mutex_lock(&c->fmc->biglock);
         if (!(f = jffs_find_file(c, inode->i_ino))) {
                 D(printk("jffs_read_inode(): No such inode (%lu).\n",
                          inode->i_ino));
                 D3(printk (KERN_NOTICE "read_inode(): up biglock\n"));
-                up(&c->fmc->biglock);
+                mutex_unlock(&c->fmc->biglock);
                 return;
         }
         inode->u.generic_ip = (void *)f;
@@ -1732,7 +1732,7 @@ jffs_read_inode(struct inode *inode)
         }
 
         D3(printk (KERN_NOTICE "read_inode(): up biglock\n"));
-        up(&c->fmc->biglock);
+        mutex_unlock(&c->fmc->biglock);
 }
 
 
diff --git a/fs/jffs/intrep.c b/fs/jffs/intrep.c
index ce7b54b0b2b7..0ef207dfaf6f 100644
--- a/fs/jffs/intrep.c
+++ b/fs/jffs/intrep.c
@@ -62,7 +62,7 @@
 #include <linux/fs.h>
 #include <linux/stat.h>
 #include <linux/pagemap.h>
-#include <asm/semaphore.h>
+#include <linux/mutex.h>
 #include <asm/byteorder.h>
 #include <linux/smp_lock.h>
 #include <linux/time.h>
@@ -3416,7 +3416,7 @@ jffs_garbage_collect_thread(void *ptr)
                 D1(printk (KERN_NOTICE "jffs_garbage_collect_thread(): collecting.\n"));
 
                 D3(printk (KERN_NOTICE "g_c_thread(): down biglock\n"));
-                down(&fmc->biglock);
+                mutex_lock(&fmc->biglock);
                 
                 D1(printk("***jffs_garbage_collect_thread(): round #%u, "
                           "fmc->dirty_size = %u\n", i++, fmc->dirty_size));
@@ -3447,6 +3447,6 @@ jffs_garbage_collect_thread(void *ptr)
                 
         gc_end:
                 D3(printk (KERN_NOTICE "g_c_thread(): up biglock\n"));
-                up(&fmc->biglock);
+                mutex_unlock(&fmc->biglock);
         } /* for (;;) */
 } /* jffs_garbage_collect_thread() */
diff --git a/fs/jffs/jffs_fm.c b/fs/jffs/jffs_fm.c
index 6da13b309bd1..7d8ca1aeace2 100644
--- a/fs/jffs/jffs_fm.c
+++ b/fs/jffs/jffs_fm.c
@@ -139,7 +139,7 @@ jffs_build_begin(struct jffs_control *c, int unit)
         fmc->tail = NULL;
         fmc->head_extra = NULL;
         fmc->tail_extra = NULL;
-        init_MUTEX(&fmc->biglock);
+        mutex_init(&fmc->biglock);
         return fmc;
 }
 
diff --git a/fs/jffs/jffs_fm.h b/fs/jffs/jffs_fm.h
index f64151e74122..c794d923df2a 100644
--- a/fs/jffs/jffs_fm.h
+++ b/fs/jffs/jffs_fm.h
@@ -20,10 +20,11 @@
 #ifndef __LINUX_JFFS_FM_H__
 #define __LINUX_JFFS_FM_H__
 
+#include <linux/config.h>
 #include <linux/types.h>
 #include <linux/jffs.h>
 #include <linux/mtd/mtd.h>
-#include <linux/config.h>
+#include <linux/mutex.h>
 
 /* The alignment between two nodes in the flash memory.  */
 #define JFFS_ALIGN_SIZE 4
@@ -97,7 +98,7 @@ struct jffs_fmcontrol
         struct jffs_fm *tail;
         struct jffs_fm *head_extra;
         struct jffs_fm *tail_extra;
-        struct semaphore biglock;
+        struct mutex biglock;
 };
 
 /* Notice the two members head_extra and tail_extra in the jffs_control
diff --git a/fs/libfs.c b/fs/libfs.c
index 71fd08fa4103..4fdeaceb892c 100644
--- a/fs/libfs.c
+++ b/fs/libfs.c
@@ -7,6 +7,8 @@
 #include <linux/pagemap.h>
 #include <linux/mount.h>
 #include <linux/vfs.h>
+#include <linux/mutex.h>
+
 #include <asm/uaccess.h>
 
 int simple_getattr(struct vfsmount *mnt, struct dentry *dentry,
@@ -530,7 +532,7 @@ struct simple_attr {
         char set_buf[24];
         void *data;
         const char *fmt;        /* format for read operation */
-        struct semaphore sem;   /* protects access to these buffers */
+        struct mutex mutex;     /* protects access to these buffers */
 };
 
 /* simple_attr_open is called by an actual attribute open file operation
@@ -549,7 +551,7 @@ int simple_attr_open(struct inode *inode, struct file *file,
         attr->set = set;
         attr->data = inode->u.generic_ip;
         attr->fmt = fmt;
-        init_MUTEX(&attr->sem);
+        mutex_init(&attr->mutex);
 
         file->private_data = attr;
 
@@ -575,7 +577,7 @@ ssize_t simple_attr_read(struct file *file, char __user *buf,
         if (!attr->get)
                 return -EACCES;
 
-        down(&attr->sem);
+        mutex_lock(&attr->mutex);
         if (*ppos) /* continued read */
                 size = strlen(attr->get_buf);
         else      /* first read */
@@ -584,7 +586,7 @@ ssize_t simple_attr_read(struct file *file, char __user *buf,
                                  (unsigned long long)attr->get(attr->data));
 
         ret = simple_read_from_buffer(buf, len, ppos, attr->get_buf, size);
-        up(&attr->sem);
+        mutex_unlock(&attr->mutex);
         return ret;
 }
 
@@ -602,7 +604,7 @@ ssize_t simple_attr_write(struct file *file, const char __user *buf,
         if (!attr->set)
                 return -EACCES;
 
-        down(&attr->sem);
+        mutex_lock(&attr->mutex);
         ret = -EFAULT;
         size = min(sizeof(attr->set_buf) - 1, len);
         if (copy_from_user(attr->set_buf, buf, size))
@@ -613,7 +615,7 @@ ssize_t simple_attr_write(struct file *file, const char __user *buf,
         val = simple_strtol(attr->set_buf, NULL, 0);
         attr->set(attr->data, val);
 out:
-        up(&attr->sem);
+        mutex_unlock(&attr->mutex);
         return ret;
 }
 
diff --git a/fs/minix/namei.c b/fs/minix/namei.c
index b25bca5bdb57..5b6a4540a05b 100644
--- a/fs/minix/namei.c
+++ b/fs/minix/namei.c
@@ -6,18 +6,6 @@
 
 #include "minix.h"
 
-static inline void inc_count(struct inode *inode)
-{
-        inode->i_nlink++;
-        mark_inode_dirty(inode);
-}
-
-static inline void dec_count(struct inode *inode)
-{
-        inode->i_nlink--;
-        mark_inode_dirty(inode);
-}
-
 static int add_nondir(struct dentry *dentry, struct inode *inode)
 {
         int err = minix_add_link(dentry, inode);
@@ -25,7 +13,7 @@ static int add_nondir(struct dentry *dentry, struct inode *inode)
                 d_instantiate(dentry, inode);
                 return 0;
         }
-        dec_count(inode);
+        inode_dec_link_count(inode);
         iput(inode);
         return err;
 }
@@ -125,7 +113,7 @@ out:
         return err;
 
 out_fail:
-        dec_count(inode);
+        inode_dec_link_count(inode);
         iput(inode);
         goto out;
 }
@@ -139,7 +127,7 @@ static int minix_link(struct dentry * old_dentry, struct inode * dir,
                 return -EMLINK;
 
         inode->i_ctime = CURRENT_TIME_SEC;
-        inc_count(inode);
+        inode_inc_link_count(inode);
         atomic_inc(&inode->i_count);
         return add_nondir(dentry, inode);
 }
@@ -152,7 +140,7 @@ static int minix_mkdir(struct inode * dir, struct dentry *dentry, int mode)
         if (dir->i_nlink >= minix_sb(dir->i_sb)->s_link_max)
                 goto out;
 
-        inc_count(dir);
+        inode_inc_link_count(dir);
 
         inode = minix_new_inode(dir, &err);
         if (!inode)
@@ -163,7 +151,7 @@ static int minix_mkdir(struct inode * dir, struct dentry *dentry, int mode)
                 inode->i_mode |= S_ISGID;
         minix_set_inode(inode, 0);
 
-        inc_count(inode);
+        inode_inc_link_count(inode);
 
         err = minix_make_empty(inode, dir);
         if (err)
@@ -178,11 +166,11 @@ out:
         return err;
 
 out_fail:
-        dec_count(inode);
-        dec_count(inode);
+        inode_dec_link_count(inode);
+        inode_dec_link_count(inode);
         iput(inode);
 out_dir:
-        dec_count(dir);
+        inode_dec_link_count(dir);
         goto out;
 }
 
@@ -202,7 +190,7 @@ static int minix_unlink(struct inode * dir, struct dentry *dentry)
                 goto end_unlink;
 
         inode->i_ctime = dir->i_ctime;
-        dec_count(inode);
+        inode_dec_link_count(inode);
 end_unlink:
         return err;
 }
@@ -215,8 +203,8 @@ static int minix_rmdir(struct inode * dir, struct dentry *dentry)
         if (minix_empty_dir(inode)) {
                 err = minix_unlink(dir, dentry);
                 if (!err) {
-                        dec_count(dir);
-                        dec_count(inode);
+                        inode_dec_link_count(dir);
+                        inode_dec_link_count(inode);
                 }
         }
         return err;
@@ -257,34 +245,34 @@ static int minix_rename(struct inode * old_dir, struct dentry *old_dentry,
                 new_de = minix_find_entry(new_dentry, &new_page);
                 if (!new_de)
                         goto out_dir;
-                inc_count(old_inode);
+                inode_inc_link_count(old_inode);
                 minix_set_link(new_de, new_page, old_inode);
                 new_inode->i_ctime = CURRENT_TIME_SEC;
                 if (dir_de)
                         new_inode->i_nlink--;
-                dec_count(new_inode);
+                inode_dec_link_count(new_inode);
         } else {
                 if (dir_de) {
                         err = -EMLINK;
                         if (new_dir->i_nlink >= info->s_link_max)
                                 goto out_dir;
                 }
-                inc_count(old_inode);
+                inode_inc_link_count(old_inode);
                 err = minix_add_link(new_dentry, old_inode);
                 if (err) {
-                        dec_count(old_inode);
+                        inode_dec_link_count(old_inode);
                         goto out_dir;
                 }
                 if (dir_de)
-                        inc_count(new_dir);
+                        inode_inc_link_count(new_dir);
         }
 
         minix_delete_entry(old_de, old_page);
-        dec_count(old_inode);
+        inode_dec_link_count(old_inode);
 
         if (dir_de) {
                 minix_set_link(dir_de, dir_page, new_dir);
-                dec_count(old_dir);
+                inode_dec_link_count(old_dir);
         }
         return 0;
 
diff --git a/fs/namei.c b/fs/namei.c
index 8dc2b038d5d9..c72b940797fc 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -104,7 +104,7 @@
  */
 /*
  * [Sep 2001 AV] Single-semaphore locking scheme (kudos to David Holland)
- * implemented.  Let's see if raised priority of ->s_vfs_rename_sem gives
+ * implemented.  Let's see if raised priority of ->s_vfs_rename_mutex gives
  * any extra contention...
  */
 
@@ -1422,7 +1422,7 @@ struct dentry *lock_rename(struct dentry *p1, struct dentry *p2)
                 return NULL;
         }
 
-        down(&p1->d_inode->i_sb->s_vfs_rename_sem);
+        mutex_lock(&p1->d_inode->i_sb->s_vfs_rename_mutex);
 
         for (p = p1; p->d_parent != p; p = p->d_parent) {
                 if (p->d_parent == p2) {
@@ -1450,7 +1450,7 @@ void unlock_rename(struct dentry *p1, struct dentry *p2)
         mutex_unlock(&p1->d_inode->i_mutex);
         if (p1 != p2) {
                 mutex_unlock(&p2->d_inode->i_mutex);
-                up(&p1->d_inode->i_sb->s_vfs_rename_sem);
+                mutex_unlock(&p1->d_inode->i_sb->s_vfs_rename_mutex);
         }
 }
 
@@ -2277,17 +2277,17 @@ asmlinkage long sys_link(const char __user *oldname, const char __user *newname)
  *      a) we can get into loop creation. Check is done in is_subdir().
  *      b) race potential - two innocent renames can create a loop together.
  *         That's where 4.4 screws up. Current fix: serialization on
- *         sb->s_vfs_rename_sem. We might be more accurate, but that's another
+ *         sb->s_vfs_rename_mutex. We might be more accurate, but that's another
  *         story.
  *      c) we have to lock _three_ objects - parents and victim (if it exists).
  *         And that - after we got ->i_mutex on parents (until then we don't know
  *         whether the target exists).  Solution: try to be smart with locking
  *         order for inodes.  We rely on the fact that tree topology may change
- *         only under ->s_vfs_rename_sem _and_ that parent of the object we
+ *         only under ->s_vfs_rename_mutex _and_ that parent of the object we
  *         move will be locked.  Thus we can rank directories by the tree
  *         (ancestors first) and rank all non-directories after them.
  *         That works since everybody except rename does "lock parent, lookup,
- *         lock child" and rename is under ->s_vfs_rename_sem.
+ *         lock child" and rename is under ->s_vfs_rename_mutex.
  *         HOWEVER, it relies on the assumption that any object with ->lookup()
  *         has no more than 1 dentry.  If "hybrid" objects will ever appear,
  *         we'd better make sure that there's no link(2) for them.
diff --git a/fs/ncpfs/file.c b/fs/ncpfs/file.c
index 973b444d6914..ebdad8f6398f 100644
--- a/fs/ncpfs/file.c
+++ b/fs/ncpfs/file.c
@@ -46,7 +46,7 @@ int ncp_make_open(struct inode *inode, int right)
                 NCP_FINFO(inode)->volNumber, 
                 NCP_FINFO(inode)->dirEntNum);
         error = -EACCES;
-        down(&NCP_FINFO(inode)->open_sem);
+        mutex_lock(&NCP_FINFO(inode)->open_mutex);
         if (!atomic_read(&NCP_FINFO(inode)->opened)) {
                 struct ncp_entry_info finfo;
                 int result;
@@ -93,7 +93,7 @@ int ncp_make_open(struct inode *inode, int right)
         }
 
 out_unlock:
-        up(&NCP_FINFO(inode)->open_sem);
+        mutex_unlock(&NCP_FINFO(inode)->open_mutex);
 out:
         return error;
 }
diff --git a/fs/ncpfs/inode.c b/fs/ncpfs/inode.c
index d277a58bd128..0b521d3d97ce 100644
--- a/fs/ncpfs/inode.c
+++ b/fs/ncpfs/inode.c
@@ -63,7 +63,7 @@ static void init_once(void * foo, kmem_cache_t * cachep, unsigned long flags)
 
         if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR)) ==
             SLAB_CTOR_CONSTRUCTOR) {
-                init_MUTEX(&ei->open_sem);
+                mutex_init(&ei->open_mutex);
                 inode_init_once(&ei->vfs_inode);
         }
 }
@@ -520,7 +520,7 @@ static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent)
         }
 
 /*      server->lock = 0;       */
-        init_MUTEX(&server->sem);
+        mutex_init(&server->mutex);
         server->packet = NULL;
 /*      server->buffer_size = 0;        */
 /*      server->conn_status = 0;        */
@@ -557,7 +557,7 @@ static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent)
         server->dentry_ttl = 0; /* no caching */
 
         INIT_LIST_HEAD(&server->tx.requests);
-        init_MUTEX(&server->rcv.creq_sem);
+        mutex_init(&server->rcv.creq_mutex);
         server->tx.creq         = NULL;
         server->rcv.creq        = NULL;
         server->data_ready      = sock->sk->sk_data_ready;
diff --git a/fs/ncpfs/ncplib_kernel.c b/fs/ncpfs/ncplib_kernel.c
index c755e1848a42..d9ebf6439f59 100644
--- a/fs/ncpfs/ncplib_kernel.c
+++ b/fs/ncpfs/ncplib_kernel.c
@@ -291,7 +291,7 @@ ncp_make_closed(struct inode *inode)
         int err;
 
         err = 0;
-        down(&NCP_FINFO(inode)->open_sem);      
+        mutex_lock(&NCP_FINFO(inode)->open_mutex);
         if (atomic_read(&NCP_FINFO(inode)->opened) == 1) {
                 atomic_set(&NCP_FINFO(inode)->opened, 0);
                 err = ncp_close_file(NCP_SERVER(inode), NCP_FINFO(inode)->file_handle);
@@ -301,7 +301,7 @@ ncp_make_closed(struct inode *inode)
                                 NCP_FINFO(inode)->volNumber,
                                 NCP_FINFO(inode)->dirEntNum, err);
         }
-        up(&NCP_FINFO(inode)->open_sem);
+        mutex_unlock(&NCP_FINFO(inode)->open_mutex);
         return err;
 }
 
diff --git a/fs/ncpfs/sock.c b/fs/ncpfs/sock.c
index 6593a5ca88ba..8783eb7ec641 100644
--- a/fs/ncpfs/sock.c
+++ b/fs/ncpfs/sock.c
@@ -171,9 +171,9 @@ static inline void __ncp_abort_request(struct ncp_server *server, struct ncp_req
 
 static inline void ncp_abort_request(struct ncp_server *server, struct ncp_request_reply *req, int err)
 {
-        down(&server->rcv.creq_sem);
+        mutex_lock(&server->rcv.creq_mutex);
         __ncp_abort_request(server, req, err);
-        up(&server->rcv.creq_sem);
+        mutex_unlock(&server->rcv.creq_mutex);
 }
 
 static inline void __ncptcp_abort(struct ncp_server *server)
@@ -303,20 +303,20 @@ static inline void __ncp_start_request(struct ncp_server *server, struct ncp_req
 
 static int ncp_add_request(struct ncp_server *server, struct ncp_request_reply *req)
 {
-        down(&server->rcv.creq_sem);
+        mutex_lock(&server->rcv.creq_mutex);
         if (!ncp_conn_valid(server)) {
-                up(&server->rcv.creq_sem);
+                mutex_unlock(&server->rcv.creq_mutex);
                 printk(KERN_ERR "ncpfs: tcp: Server died\n");
                 return -EIO;
         }
         if (server->tx.creq || server->rcv.creq) {
                 req->status = RQ_QUEUED;
                 list_add_tail(&req->req, &server->tx.requests);
-                up(&server->rcv.creq_sem);
+                mutex_unlock(&server->rcv.creq_mutex);
                 return 0;
         }
         __ncp_start_request(server, req);
-        up(&server->rcv.creq_sem);
+        mutex_unlock(&server->rcv.creq_mutex);
         return 0;
 }
 
@@ -400,7 +400,7 @@ void ncpdgram_rcv_proc(void *s)
                                 info_server(server, 0, server->unexpected_packet.data, result);
                                 continue;
                         }
-                        down(&server->rcv.creq_sem);            
+                        mutex_lock(&server->rcv.creq_mutex);
                         req = server->rcv.creq;
                         if (req && (req->tx_type == NCP_ALLOC_SLOT_REQUEST || (server->sequence == reply.sequence && 
                                         server->connection == get_conn_number(&reply)))) {
@@ -430,11 +430,11 @@ void ncpdgram_rcv_proc(void *s)
                                         server->rcv.creq = NULL;
                                         ncp_finish_request(req, result);
                                         __ncp_next_request(server);
-                                        up(&server->rcv.creq_sem);
+                                        mutex_unlock(&server->rcv.creq_mutex);
                                         continue;
                                 }
                         }
-                        up(&server->rcv.creq_sem);
+                        mutex_unlock(&server->rcv.creq_mutex);
                 }
 drop:;          
                 _recv(sock, &reply, sizeof(reply), MSG_DONTWAIT);
@@ -472,9 +472,9 @@ static void __ncpdgram_timeout_proc(struct ncp_server *server)
 void ncpdgram_timeout_proc(void *s)
 {
         struct ncp_server *server = s;
-        down(&server->rcv.creq_sem);
+        mutex_lock(&server->rcv.creq_mutex);
         __ncpdgram_timeout_proc(server);
-        up(&server->rcv.creq_sem);
+        mutex_unlock(&server->rcv.creq_mutex);
 }
 
 static inline void ncp_init_req(struct ncp_request_reply* req)
@@ -657,18 +657,18 @@ void ncp_tcp_rcv_proc(void *s)
 {
         struct ncp_server *server = s;
 
-        down(&server->rcv.creq_sem);
+        mutex_lock(&server->rcv.creq_mutex);
         __ncptcp_rcv_proc(server);
-        up(&server->rcv.creq_sem);
+        mutex_unlock(&server->rcv.creq_mutex);
 }
 
 void ncp_tcp_tx_proc(void *s)
 {
         struct ncp_server *server = s;
         
-        down(&server->rcv.creq_sem);
+        mutex_lock(&server->rcv.creq_mutex);
         __ncptcp_try_send(server);
-        up(&server->rcv.creq_sem);
+        mutex_unlock(&server->rcv.creq_mutex);
 }
 
 static int do_ncp_rpc_call(struct ncp_server *server, int size,
@@ -833,7 +833,7 @@ int ncp_disconnect(struct ncp_server *server)
 
 void ncp_lock_server(struct ncp_server *server)
 {
-        down(&server->sem);
+        mutex_lock(&server->mutex);
         if (server->lock)
                 printk(KERN_WARNING "ncp_lock_server: was locked!\n");
         server->lock = 1;
@@ -846,5 +846,5 @@ void ncp_unlock_server(struct ncp_server *server)
                 return;
         }
         server->lock = 0;
-        up(&server->sem);
+        mutex_unlock(&server->mutex);
 }
diff --git a/fs/nls/Kconfig b/fs/nls/Kconfig
index 0ab8f00bdbb2..976ecccd6f56 100644
--- a/fs/nls/Kconfig
+++ b/fs/nls/Kconfig
@@ -491,7 +491,7 @@ config NLS_KOI8_U
           (koi8-u) and Belarusian (koi8-ru) character sets.
 
 config NLS_UTF8
-        tristate "NLS UTF8"
+        tristate "NLS UTF-8"
         depends on NLS
         help
           If you want to display filenames with native language characters
diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c
index 8dd3aafec499..09e1c57a86a0 100644
--- a/fs/ocfs2/super.c
+++ b/fs/ocfs2/super.c
@@ -959,7 +959,7 @@ static int ocfs2_initialize_mem_caches(void)
         ocfs2_lock_cache = kmem_cache_create("ocfs2_lock",
                                              sizeof(struct ocfs2_journal_lock),
                                              0,
-                                             SLAB_NO_REAP|SLAB_HWCACHE_ALIGN,
+                                             SLAB_HWCACHE_ALIGN,
                                              NULL, NULL);
         if (!ocfs2_lock_cache)
                 return -ENOMEM;
diff --git a/fs/open.c b/fs/open.c
index 70e0230d8e77..1091dadd6c38 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -973,7 +973,7 @@ repeat:
         fdt = files_fdtable(files);
         fd = find_next_zero_bit(fdt->open_fds->fds_bits,
                                 fdt->max_fdset,
-                                fdt->next_fd);
+                                files->next_fd);
 
         /*
          * N.B. For clone tasks sharing a files structure, this test
@@ -998,7 +998,7 @@ repeat:
 
         FD_SET(fd, fdt->open_fds);
         FD_CLR(fd, fdt->close_on_exec);
-        fdt->next_fd = fd + 1;
+        files->next_fd = fd + 1;
 #if 1
         /* Sanity check */
         if (fdt->fd[fd] != NULL) {
@@ -1019,8 +1019,8 @@ static void __put_unused_fd(struct files_struct *files, unsigned int fd)
 {
         struct fdtable *fdt = files_fdtable(files);
         __FD_CLR(fd, fdt->open_fds);
-        if (fd < fdt->next_fd)
-                fdt->next_fd = fd;
+        if (fd < files->next_fd)
+                files->next_fd = fd;
 }
 
 void fastcall put_unused_fd(unsigned int fd)
diff --git a/fs/proc/proc_misc.c b/fs/proc/proc_misc.c
index 1d24fead51a6..826c131994c3 100644
--- a/fs/proc/proc_misc.c
+++ b/fs/proc/proc_misc.c
@@ -312,7 +312,7 @@ static void *devinfo_next(struct seq_file *f, void *v, loff_t *pos)
                 case BLK_HDR:
                         info->state = BLK_LIST;
                         (*pos)++;
-                        break;
+                        /*fallthrough*/
                 case BLK_LIST:
                         if (get_blkdev_info(info->blkdev,&idummy,&ndummy)) {
                                 /*
diff --git a/fs/qnx4/file.c b/fs/qnx4/file.c
index b471315e24ef..c33963fded9e 100644
--- a/fs/qnx4/file.c
+++ b/fs/qnx4/file.c
@@ -12,10 +12,7 @@
  * 27-06-1998 by Frank Denis : file overwriting.
  */
 
-#include <linux/config.h>
-#include <linux/types.h>
 #include <linux/fs.h>
-#include <linux/time.h>
 #include <linux/qnx4_fs.h>
 
 /*
diff --git a/fs/quota.c b/fs/quota.c
index ba9e0bf32f67..d6a2be826e29 100644
--- a/fs/quota.c
+++ b/fs/quota.c
@@ -170,10 +170,10 @@ static void quota_sync_sb(struct super_block *sb, int type)
 
         /* Now when everything is written we can discard the pagecache so
          * that userspace sees the changes. We need i_mutex and so we could
-         * not do it inside dqonoff_sem. Moreover we need to be carefull
+         * not do it inside dqonoff_mutex. Moreover we need to be carefull
          * about races with quotaoff() (that is the reason why we have own
          * reference to inode). */
-        down(&sb_dqopt(sb)->dqonoff_sem);
+        mutex_lock(&sb_dqopt(sb)->dqonoff_mutex);
         for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
                 discard[cnt] = NULL;
                 if (type != -1 && cnt != type)
@@ -182,7 +182,7 @@ static void quota_sync_sb(struct super_block *sb, int type)
                         continue;
                 discard[cnt] = igrab(sb_dqopt(sb)->files[cnt]);
         }
-        up(&sb_dqopt(sb)->dqonoff_sem);
+        mutex_unlock(&sb_dqopt(sb)->dqonoff_mutex);
         for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
                 if (discard[cnt]) {
                         mutex_lock(&discard[cnt]->i_mutex);
diff --git a/fs/quota_v2.c b/fs/quota_v2.c
index b4199ec3ece4..c519a583e681 100644
--- a/fs/quota_v2.c
+++ b/fs/quota_v2.c
@@ -394,7 +394,7 @@ static int v2_write_dquot(struct dquot *dquot)
         ssize_t ret;
         struct v2_disk_dqblk ddquot, empty;
 
-        /* dq_off is guarded by dqio_sem */
+        /* dq_off is guarded by dqio_mutex */
         if (!dquot->dq_off)
                 if ((ret = dq_insert_tree(dquot)) < 0) {
                         printk(KERN_ERR "VFS: Error %zd occurred while creating quota.\n", ret);
diff --git a/fs/ramfs/file-mmu.c b/fs/ramfs/file-mmu.c
index 2115383dcc8d..6ada2095b9ac 100644
--- a/fs/ramfs/file-mmu.c
+++ b/fs/ramfs/file-mmu.c
@@ -24,18 +24,7 @@
  * caches is sufficient.
  */
 
-#include <linux/module.h>
 #include <linux/fs.h>
-#include <linux/pagemap.h>
-#include <linux/highmem.h>
-#include <linux/init.h>
-#include <linux/string.h>
-#include <linux/smp_lock.h>
-#include <linux/backing-dev.h>
-#include <linux/ramfs.h>
-
-#include <asm/uaccess.h>
-#include "internal.h"
 
 struct address_space_operations ramfs_aops = {
         .readpage       = simple_readpage,
diff --git a/fs/ramfs/file-nommu.c b/fs/ramfs/file-nommu.c
index 3f810acd0bfa..b1ca234068f6 100644
--- a/fs/ramfs/file-nommu.c
+++ b/fs/ramfs/file-nommu.c
@@ -87,8 +87,7 @@ static int ramfs_nommu_expand_for_mapping(struct inode *inode, size_t newsize)
         xpages = 1UL << order;
         npages = (newsize + PAGE_SIZE - 1) >> PAGE_SHIFT;
 
-        for (loop = 0; loop < npages; loop++)
-                set_page_count(pages + loop, 1);
+        split_page(pages, order);
 
         /* trim off any pages we don't actually require */
         for (loop = npages; loop < xpages; loop++)
diff --git a/fs/seq_file.c b/fs/seq_file.c
index 7c40570b71dc..555b9ac04c25 100644
--- a/fs/seq_file.c
+++ b/fs/seq_file.c
@@ -37,7 +37,7 @@ int seq_open(struct file *file, struct seq_operations *op)
                 file->private_data = p;
         }
         memset(p, 0, sizeof(*p));
-        sema_init(&p->sem, 1);
+        mutex_init(&p->lock);
         p->op = op;
 
         /*
@@ -71,7 +71,7 @@ ssize_t seq_read(struct file *file, char __user *buf, size_t size, loff_t *ppos)
         void *p;
         int err = 0;
 
-        down(&m->sem);
+        mutex_lock(&m->lock);
         /*
          * seq_file->op->..m_start/m_stop/m_next may do special actions
          * or optimisations based on the file->f_version, so we want to
@@ -164,7 +164,7 @@ Done:
         else
                 *ppos += copied;
         file->f_version = m->version;
-        up(&m->sem);
+        mutex_unlock(&m->lock);
         return copied;
 Enomem:
         err = -ENOMEM;
@@ -237,7 +237,7 @@ loff_t seq_lseek(struct file *file, loff_t offset, int origin)
         struct seq_file *m = (struct seq_file *)file->private_data;
         long long retval = -EINVAL;
 
-        down(&m->sem);
+        mutex_lock(&m->lock);
         m->version = file->f_version;
         switch (origin) {
                 case 1:
@@ -260,7 +260,7 @@ loff_t seq_lseek(struct file *file, loff_t offset, int origin)
                                 }
                         }
         }
-        up(&m->sem);
+        mutex_unlock(&m->lock);
         file->f_version = m->version;
         return retval;
 }
diff --git a/fs/super.c b/fs/super.c
index e20b5580afd5..425861cb1caa 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -76,9 +76,9 @@ static struct super_block *alloc_super(void)
                 down_write(&s->s_umount);
                 s->s_count = S_BIAS;
                 atomic_set(&s->s_active, 1);
-                sema_init(&s->s_vfs_rename_sem,1);
-                sema_init(&s->s_dquot.dqio_sem, 1);
-                sema_init(&s->s_dquot.dqonoff_sem, 1);
+                mutex_init(&s->s_vfs_rename_mutex);
+                mutex_init(&s->s_dquot.dqio_mutex);
+                mutex_init(&s->s_dquot.dqonoff_mutex);
                 init_rwsem(&s->s_dquot.dqptr_sem);
                 init_waitqueue_head(&s->s_wait_unfrozen);
                 s->s_maxbytes = MAX_NON_LFS;
@@ -693,9 +693,9 @@ struct super_block *get_sb_bdev(struct file_system_type *fs_type,
          * will protect the lockfs code from trying to start a snapshot
          * while we are mounting
          */
-        down(&bdev->bd_mount_sem);
+        mutex_lock(&bdev->bd_mount_mutex);
         s = sget(fs_type, test_bdev_super, set_bdev_super, bdev);
-        up(&bdev->bd_mount_sem);
+        mutex_unlock(&bdev->bd_mount_mutex);
         if (IS_ERR(s))
                 goto out;
 
diff --git a/fs/sysv/namei.c b/fs/sysv/namei.c
index 7f0e4b53085e..b8a73f716fbe 100644
--- a/fs/sysv/namei.c
+++ b/fs/sysv/namei.c
@@ -16,18 +16,6 @@
 #include <linux/smp_lock.h>
 #include "sysv.h"
 
-static inline void inc_count(struct inode *inode)
-{
-        inode->i_nlink++;
-        mark_inode_dirty(inode);
-}
-
-static inline void dec_count(struct inode *inode)
-{
-        inode->i_nlink--;
-        mark_inode_dirty(inode);
-}
-
 static int add_nondir(struct dentry *dentry, struct inode *inode)
 {
         int err = sysv_add_link(dentry, inode);
@@ -35,7 +23,7 @@ static int add_nondir(struct dentry *dentry, struct inode *inode)
                 d_instantiate(dentry, inode);
                 return 0;
         }
-        dec_count(inode);
+        inode_dec_link_count(inode);
         iput(inode);
         return err;
 }
@@ -124,7 +112,7 @@ out:
         return err;
 
 out_fail:
-        dec_count(inode);
+        inode_dec_link_count(inode);
         iput(inode);
         goto out;
 }
@@ -138,7 +126,7 @@ static int sysv_link(struct dentry * old_dentry, struct inode * dir,
                 return -EMLINK;
 
         inode->i_ctime = CURRENT_TIME_SEC;
-        inc_count(inode);
+        inode_inc_link_count(inode);
         atomic_inc(&inode->i_count);
 
         return add_nondir(dentry, inode);
@@ -151,7 +139,7 @@ static int sysv_mkdir(struct inode * dir, struct dentry *dentry, int mode)
 
         if (dir->i_nlink >= SYSV_SB(dir->i_sb)->s_link_max) 
                 goto out;
-        inc_count(dir);
+        inode_inc_link_count(dir);
 
         inode = sysv_new_inode(dir, S_IFDIR|mode);
         err = PTR_ERR(inode);
@@ -160,7 +148,7 @@ static int sysv_mkdir(struct inode * dir, struct dentry *dentry, int mode)
 
         sysv_set_inode(inode, 0);
 
-        inc_count(inode);
+        inode_inc_link_count(inode);
 
         err = sysv_make_empty(inode, dir);
         if (err)
@@ -175,11 +163,11 @@ out:
         return err;
 
 out_fail:
-        dec_count(inode);
-        dec_count(inode);
+        inode_dec_link_count(inode);
+        inode_dec_link_count(inode);
         iput(inode);
 out_dir:
-        dec_count(dir);
+        inode_dec_link_count(dir);
         goto out;
 }
 
@@ -199,7 +187,7 @@ static int sysv_unlink(struct inode * dir, struct dentry * dentry)
                 goto out;
 
         inode->i_ctime = dir->i_ctime;
-        dec_count(inode);
+        inode_dec_link_count(inode);
 out:
         return err;
 }
@@ -213,8 +201,8 @@ static int sysv_rmdir(struct inode * dir, struct dentry * dentry)
                 err = sysv_unlink(dir, dentry);
                 if (!err) {
                         inode->i_size = 0;
-                        dec_count(inode);
-                        dec_count(dir);
+                        inode_dec_link_count(inode);
+                        inode_dec_link_count(dir);
                 }
         }
         return err;
@@ -258,34 +246,34 @@ static int sysv_rename(struct inode * old_dir, struct dentry * old_dentry,
                 new_de = sysv_find_entry(new_dentry, &new_page);
                 if (!new_de)
                         goto out_dir;
-                inc_count(old_inode);
+                inode_inc_link_count(old_inode);
                 sysv_set_link(new_de, new_page, old_inode);
                 new_inode->i_ctime = CURRENT_TIME_SEC;
                 if (dir_de)
                         new_inode->i_nlink--;
-                dec_count(new_inode);
+                inode_dec_link_count(new_inode);
         } else {
                 if (dir_de) {
                         err = -EMLINK;
                         if (new_dir->i_nlink >= SYSV_SB(new_dir->i_sb)->s_link_max)
                                 goto out_dir;
                 }
-                inc_count(old_inode);
+                inode_inc_link_count(old_inode);
                 err = sysv_add_link(new_dentry, old_inode);
                 if (err) {
-                        dec_count(old_inode);
+                        inode_dec_link_count(old_inode);
                         goto out_dir;
                 }
                 if (dir_de)
-                        inc_count(new_dir);
+                        inode_inc_link_count(new_dir);
         }
 
         sysv_delete_entry(old_de, old_page);
-        dec_count(old_inode);
+        inode_dec_link_count(old_inode);
 
         if (dir_de) {
                 sysv_set_link(dir_de, dir_page, new_dir);
-                dec_count(old_dir);
+                inode_dec_link_count(old_dir);
         }
         return 0;
 
diff --git a/fs/udf/balloc.c b/fs/udf/balloc.c
index 201049ac8a96..ea521f846d97 100644
--- a/fs/udf/balloc.c
+++ b/fs/udf/balloc.c
@@ -152,7 +152,7 @@ static void udf_bitmap_free_blocks(struct super_block * sb,
         int bitmap_nr;
         unsigned long overflow;
 
-        down(&sbi->s_alloc_sem);
+        mutex_lock(&sbi->s_alloc_mutex);
         if (bloc.logicalBlockNum < 0 ||
                 (bloc.logicalBlockNum + count) > UDF_SB_PARTLEN(sb, bloc.partitionReferenceNum))
         {
@@ -211,7 +211,7 @@ error_return:
         sb->s_dirt = 1;
         if (UDF_SB_LVIDBH(sb))
                 mark_buffer_dirty(UDF_SB_LVIDBH(sb));
-        up(&sbi->s_alloc_sem);
+        mutex_unlock(&sbi->s_alloc_mutex);
         return;
 }
 
@@ -226,7 +226,7 @@ static int udf_bitmap_prealloc_blocks(struct super_block * sb,
         int nr_groups, bitmap_nr;
         struct buffer_head *bh;
 
-        down(&sbi->s_alloc_sem);
+        mutex_lock(&sbi->s_alloc_mutex);
         if (first_block < 0 || first_block >= UDF_SB_PARTLEN(sb, partition))
                 goto out;
 
@@ -275,7 +275,7 @@ out:
                 mark_buffer_dirty(UDF_SB_LVIDBH(sb));
         }
         sb->s_dirt = 1;
-        up(&sbi->s_alloc_sem);
+        mutex_unlock(&sbi->s_alloc_mutex);
         return alloc_count;
 }
 
@@ -291,7 +291,7 @@ static int udf_bitmap_new_block(struct super_block * sb,
         int newblock = 0;
 
         *err = -ENOSPC;
-        down(&sbi->s_alloc_sem);
+        mutex_lock(&sbi->s_alloc_mutex);
 
 repeat:
         if (goal < 0 || goal >= UDF_SB_PARTLEN(sb, partition))
@@ -364,7 +364,7 @@ repeat:
         }
         if (i >= (nr_groups*2))
         {
-                up(&sbi->s_alloc_sem);
+                mutex_unlock(&sbi->s_alloc_mutex);
                 return newblock;
         }
         if (bit < sb->s_blocksize << 3)
@@ -373,7 +373,7 @@ repeat:
                 bit = udf_find_next_one_bit(bh->b_data, sb->s_blocksize << 3, group_start << 3);
         if (bit >= sb->s_blocksize << 3)
         {
-                up(&sbi->s_alloc_sem);
+                mutex_unlock(&sbi->s_alloc_mutex);
                 return 0;
         }
 
@@ -387,7 +387,7 @@ got_block:
          */
         if (inode && DQUOT_ALLOC_BLOCK(inode, 1))
         {
-                up(&sbi->s_alloc_sem);
+                mutex_unlock(&sbi->s_alloc_mutex);
                 *err = -EDQUOT;
                 return 0;
         }
@@ -410,13 +410,13 @@ got_block:
                 mark_buffer_dirty(UDF_SB_LVIDBH(sb));
         }
         sb->s_dirt = 1;
-        up(&sbi->s_alloc_sem);
+        mutex_unlock(&sbi->s_alloc_mutex);
         *err = 0;
         return newblock;
 
 error_return:
         *err = -EIO;
-        up(&sbi->s_alloc_sem);
+        mutex_unlock(&sbi->s_alloc_mutex);
         return 0;
 }
 
@@ -433,7 +433,7 @@ static void udf_table_free_blocks(struct super_block * sb,
         int8_t etype;
         int i;
 
-        down(&sbi->s_alloc_sem);
+        mutex_lock(&sbi->s_alloc_mutex);
         if (bloc.logicalBlockNum < 0 ||
                 (bloc.logicalBlockNum + count) > UDF_SB_PARTLEN(sb, bloc.partitionReferenceNum))
         {
@@ -666,7 +666,7 @@ static void udf_table_free_blocks(struct super_block * sb,
 
 error_return:
         sb->s_dirt = 1;
-        up(&sbi->s_alloc_sem);
+        mutex_unlock(&sbi->s_alloc_mutex);
         return;
 }
 
@@ -692,7 +692,7 @@ static int udf_table_prealloc_blocks(struct super_block * sb,
         else
                 return 0;
 
-        down(&sbi->s_alloc_sem);
+        mutex_lock(&sbi->s_alloc_mutex);
         extoffset = sizeof(struct unallocSpaceEntry);
         bloc = UDF_I_LOCATION(table);
 
@@ -736,7 +736,7 @@ static int udf_table_prealloc_blocks(struct super_block * sb,
                 mark_buffer_dirty(UDF_SB_LVIDBH(sb));
                 sb->s_dirt = 1;
         }
-        up(&sbi->s_alloc_sem);
+        mutex_unlock(&sbi->s_alloc_mutex);
         return alloc_count;
 }
 
@@ -761,7 +761,7 @@ static int udf_table_new_block(struct super_block * sb,
         else
                 return newblock;
 
-        down(&sbi->s_alloc_sem);
+        mutex_lock(&sbi->s_alloc_mutex);
         if (goal < 0 || goal >= UDF_SB_PARTLEN(sb, partition))
                 goal = 0;
 
@@ -811,7 +811,7 @@ static int udf_table_new_block(struct super_block * sb,
         if (spread == 0xFFFFFFFF)
         {
                 udf_release_data(goal_bh);
-                up(&sbi->s_alloc_sem);
+                mutex_unlock(&sbi->s_alloc_mutex);
                 return 0;
         }
 
@@ -827,7 +827,7 @@ static int udf_table_new_block(struct super_block * sb,
         if (inode && DQUOT_ALLOC_BLOCK(inode, 1))
         {
                 udf_release_data(goal_bh);
-                up(&sbi->s_alloc_sem);
+                mutex_unlock(&sbi->s_alloc_mutex);
                 *err = -EDQUOT;
                 return 0;
         }
@@ -846,7 +846,7 @@ static int udf_table_new_block(struct super_block * sb,
         }
 
         sb->s_dirt = 1;
-        up(&sbi->s_alloc_sem);
+        mutex_unlock(&sbi->s_alloc_mutex);
         *err = 0;
         return newblock;
 }
diff --git a/fs/udf/ialloc.c b/fs/udf/ialloc.c
index c9b707b470ca..3873c672cb4c 100644
--- a/fs/udf/ialloc.c
+++ b/fs/udf/ialloc.c
@@ -42,7 +42,7 @@ void udf_free_inode(struct inode * inode)
 
         clear_inode(inode);
 
-        down(&sbi->s_alloc_sem);
+        mutex_lock(&sbi->s_alloc_mutex);
         if (sbi->s_lvidbh) {
                 if (S_ISDIR(inode->i_mode))
                         UDF_SB_LVIDIU(sb)->numDirs =
@@ -53,7 +53,7 @@ void udf_free_inode(struct inode * inode)
                 
                 mark_buffer_dirty(sbi->s_lvidbh);
         }
-        up(&sbi->s_alloc_sem);
+        mutex_unlock(&sbi->s_alloc_mutex);
 
         udf_free_blocks(sb, NULL, UDF_I_LOCATION(inode), 0, 1);
 }
@@ -83,7 +83,7 @@ struct inode * udf_new_inode (struct inode *dir, int mode, int * err)
                 return NULL;
         }
 
-        down(&sbi->s_alloc_sem);
+        mutex_lock(&sbi->s_alloc_mutex);
         UDF_I_UNIQUE(inode) = 0;
         UDF_I_LENEXTENTS(inode) = 0;
         UDF_I_NEXT_ALLOC_BLOCK(inode) = 0;
@@ -148,7 +148,7 @@ struct inode * udf_new_inode (struct inode *dir, int mode, int * err)
                 UDF_I_CRTIME(inode) = current_fs_time(inode->i_sb);
         insert_inode_hash(inode);
         mark_inode_dirty(inode);
-        up(&sbi->s_alloc_sem);
+        mutex_unlock(&sbi->s_alloc_mutex);
 
         if (DQUOT_ALLOC_INODE(inode))
         {
diff --git a/fs/udf/super.c b/fs/udf/super.c
index 368d8f81fe54..9303c50c5d55 100644
--- a/fs/udf/super.c
+++ b/fs/udf/super.c
@@ -1515,7 +1515,7 @@ static int udf_fill_super(struct super_block *sb, void *options, int silent)
         sb->s_fs_info = sbi;
         memset(UDF_SB(sb), 0x00, sizeof(struct udf_sb_info));
 
-        init_MUTEX(&sbi->s_alloc_sem);
+        mutex_init(&sbi->s_alloc_mutex);
 
         if (!udf_parse_options((char *)options, &uopt))
                 goto error_out;
diff --git a/fs/ufs/file.c b/fs/ufs/file.c
index ed69d7fe1b5d..62ad481810ef 100644
--- a/fs/ufs/file.c
+++ b/fs/ufs/file.c
@@ -23,18 +23,8 @@
  *  ext2 fs regular file handling primitives
  */
 
-#include <asm/uaccess.h>
-#include <asm/system.h>
-
-#include <linux/errno.h>
 #include <linux/fs.h>
 #include <linux/ufs_fs.h>
-#include <linux/fcntl.h>
-#include <linux/time.h>
-#include <linux/stat.h>
-#include <linux/mm.h>
-#include <linux/pagemap.h>
-#include <linux/smp_lock.h>
 
 /*
  * We have mostly NULL's here: the current defaults are ok for
diff --git a/fs/ufs/namei.c b/fs/ufs/namei.c
index 2958cde7d3d6..8d5f98a01c74 100644
--- a/fs/ufs/namei.c
+++ b/fs/ufs/namei.c
@@ -43,18 +43,6 @@
 #define UFSD(x)
 #endif
 
-static inline void ufs_inc_count(struct inode *inode)
-{
-        inode->i_nlink++;
-        mark_inode_dirty(inode);
-}
-
-static inline void ufs_dec_count(struct inode *inode)
-{
-        inode->i_nlink--;
-        mark_inode_dirty(inode);
-}
-
 static inline int ufs_add_nondir(struct dentry *dentry, struct inode *inode)
 {
         int err = ufs_add_link(dentry, inode);
@@ -62,7 +50,7 @@ static inline int ufs_add_nondir(struct dentry *dentry, struct inode *inode)
                 d_instantiate(dentry, inode);
                 return 0;
         }
-        ufs_dec_count(inode);
+        inode_dec_link_count(inode);
         iput(inode);
         return err;
 }
@@ -173,7 +161,7 @@ out:
         return err;
 
 out_fail:
-        ufs_dec_count(inode);
+        inode_dec_link_count(inode);
         iput(inode);
         goto out;
 }
@@ -191,7 +179,7 @@ static int ufs_link (struct dentry * old_dentry, struct inode * dir,
         }
 
         inode->i_ctime = CURRENT_TIME_SEC;
-        ufs_inc_count(inode);
+        inode_inc_link_count(inode);
         atomic_inc(&inode->i_count);
 
         error = ufs_add_nondir(dentry, inode);
@@ -208,7 +196,7 @@ static int ufs_mkdir(struct inode * dir, struct dentry * dentry, int mode)
                 goto out;
 
         lock_kernel();
-        ufs_inc_count(dir);
+        inode_inc_link_count(dir);
 
         inode = ufs_new_inode(dir, S_IFDIR|mode);
         err = PTR_ERR(inode);
@@ -218,7 +206,7 @@ static int ufs_mkdir(struct inode * dir, struct dentry * dentry, int mode)
         inode->i_op = &ufs_dir_inode_operations;
         inode->i_fop = &ufs_dir_operations;
 
-        ufs_inc_count(inode);
+        inode_inc_link_count(inode);
 
         err = ufs_make_empty(inode, dir);
         if (err)
@@ -234,11 +222,11 @@ out:
         return err;
 
 out_fail:
-        ufs_dec_count(inode);
-        ufs_dec_count(inode);
+        inode_dec_link_count(inode);
+        inode_dec_link_count(inode);
         iput (inode);
 out_dir:
-        ufs_dec_count(dir);
+        inode_dec_link_count(dir);
         unlock_kernel();
         goto out;
 }
@@ -260,7 +248,7 @@ static int ufs_unlink(struct inode * dir, struct dentry *dentry)
                 goto out;
 
         inode->i_ctime = dir->i_ctime;
-        ufs_dec_count(inode);
+        inode_dec_link_count(inode);
         err = 0;
 out:
         unlock_kernel();
@@ -277,8 +265,8 @@ static int ufs_rmdir (struct inode * dir, struct dentry *dentry)
                 err = ufs_unlink(dir, dentry);
                 if (!err) {
                         inode->i_size = 0;
-                        ufs_dec_count(inode);
-                        ufs_dec_count(dir);
+                        inode_dec_link_count(inode);
+                        inode_dec_link_count(dir);
                 }
         }
         unlock_kernel();
@@ -319,35 +307,35 @@ static int ufs_rename (struct inode * old_dir, struct dentry * old_dentry,
                 new_de = ufs_find_entry (new_dentry, &new_bh);
                 if (!new_de)
                         goto out_dir;
-                ufs_inc_count(old_inode);
+                inode_inc_link_count(old_inode);
                 ufs_set_link(new_dir, new_de, new_bh, old_inode);
                 new_inode->i_ctime = CURRENT_TIME_SEC;
                 if (dir_de)
                         new_inode->i_nlink--;
-                ufs_dec_count(new_inode);
+                inode_dec_link_count(new_inode);
         } else {
                 if (dir_de) {
                         err = -EMLINK;
                         if (new_dir->i_nlink >= UFS_LINK_MAX)
                                 goto out_dir;
                 }
-                ufs_inc_count(old_inode);
+                inode_inc_link_count(old_inode);
                 err = ufs_add_link(new_dentry, old_inode);
                 if (err) {
-                        ufs_dec_count(old_inode);
+                        inode_dec_link_count(old_inode);
                         goto out_dir;
                 }
                 if (dir_de)
-                        ufs_inc_count(new_dir);
+                        inode_inc_link_count(new_dir);
         }
 
         ufs_delete_entry (old_dir, old_de, old_bh);
 
-        ufs_dec_count(old_inode);
+        inode_dec_link_count(old_inode);
 
         if (dir_de) {
                 ufs_set_link(old_inode, dir_de, dir_bh, new_dir);
-                ufs_dec_count(old_dir);
+                inode_dec_link_count(old_dir);
         }
         unlock_kernel();
         return 0;
diff --git a/fs/xfs/linux-2.6/xfs_buf.c b/fs/xfs/linux-2.6/xfs_buf.c
index cdb905ab4dba..9fb0312665ca 100644
--- a/fs/xfs/linux-2.6/xfs_buf.c
+++ b/fs/xfs/linux-2.6/xfs_buf.c
@@ -29,6 +29,7 @@
 #include <linux/blkdev.h>
 #include <linux/hash.h>
 #include <linux/kthread.h>
+#include <linux/migrate.h>
 #include "xfs_linux.h"
 
 STATIC kmem_zone_t *xfs_buf_zone;
diff --git a/fs/xfs/linux-2.6/xfs_stats.c b/fs/xfs/linux-2.6/xfs_stats.c
index 8955720a2c6b..713e6a7505d0 100644
--- a/fs/xfs/linux-2.6/xfs_stats.c
+++ b/fs/xfs/linux-2.6/xfs_stats.c
@@ -62,18 +62,15 @@ xfs_read_xfsstats(
                 while (j < xstats[i].endpoint) {
                         val = 0;
                         /* sum over all cpus */
-                        for (c = 0; c < NR_CPUS; c++) {
-                                if (!cpu_possible(c)) continue;
+                        for_each_cpu(c)
                                 val += *(((__u32*)&per_cpu(xfsstats, c) + j));
-                        }
                         len += sprintf(buffer + len, " %u", val);
                         j++;
                 }
                 buffer[len++] = '\n';
         }
         /* extra precision counters */
-        for (i = 0; i < NR_CPUS; i++) {
-                if (!cpu_possible(i)) continue;
+        for_each_cpu(i) {
                 xs_xstrat_bytes += per_cpu(xfsstats, i).xs_xstrat_bytes;
                 xs_write_bytes += per_cpu(xfsstats, i).xs_write_bytes;
                 xs_read_bytes += per_cpu(xfsstats, i).xs_read_bytes;
diff --git a/fs/xfs/linux-2.6/xfs_sysctl.c b/fs/xfs/linux-2.6/xfs_sysctl.c
index a02564972420..7079cc837210 100644
--- a/fs/xfs/linux-2.6/xfs_sysctl.c
+++ b/fs/xfs/linux-2.6/xfs_sysctl.c
@@ -38,8 +38,7 @@ xfs_stats_clear_proc_handler(
 
         if (!ret && write && *valp) {
                 printk("XFS Clearing xfsstats\n");
-                for (c = 0; c < NR_CPUS; c++) {
-                        if (!cpu_possible(c)) continue;
+                for_each_cpu(c) {
                         preempt_disable();
                         /* save vn_active, it's a universal truth! */
                         vn_active = per_cpu(xfsstats, c).vn_active;