24 files changed, 325 insertions, 173 deletions

diff --git a/fs/Makefile b/fs/Makefile
index fc92e59e9faf..20edcf28bfd2 100644
--- a/fs/Makefile
+++ b/fs/Makefile
@@ -10,6 +10,7 @@ obj-y :=	open.o read_write.o file_table.o buffer.o  bio.o super.o \
                 ioctl.o readdir.o select.o fifo.o locks.o dcache.o inode.o \
                 attr.o bad_inode.o file.o filesystems.o namespace.o aio.o \
                 seq_file.o xattr.o libfs.o fs-writeback.o mpage.o direct-io.o \
+                ioprio.o
 
 obj-$(CONFIG_EPOLL)             += eventpoll.o
 obj-$(CONFIG_COMPAT)            += compat.o
diff --git a/fs/aio.c b/fs/aio.c
index 7afa222f6802..06d7d4390fe7 100644
--- a/fs/aio.c
+++ b/fs/aio.c
@@ -58,6 +58,7 @@ static DEFINE_SPINLOCK(fput_lock);
 static LIST_HEAD(fput_head);
 
 static void aio_kick_handler(void *);
+static void aio_queue_work(struct kioctx *);
 
 /* aio_setup
  *      Creates the slab caches used by the aio routines, panic on
@@ -747,6 +748,14 @@ out:
                  * has already been kicked */
                 if (kiocbIsKicked(iocb)) {
                         __queue_kicked_iocb(iocb);
+
+                        /*
+                         * __queue_kicked_iocb will always return 1 here, because
+                         * iocb->ki_run_list is empty at this point so it should
+                         * be safe to unconditionally queue the context into the
+                         * work queue.
+                         */
+                        aio_queue_work(ctx);
                 }
         }
         return ret;
diff --git a/fs/buffer.c b/fs/buffer.c
index 13e5938a64f6..561e63a14966 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -278,7 +278,7 @@ EXPORT_SYMBOL(thaw_bdev);
  */
 static void do_sync(unsigned long wait)
 {
-        wakeup_bdflush(0);
+        wakeup_pdflush(0);
         sync_inodes(0);         /* All mappings, inodes and their blockdevs */
         DQUOT_SYNC(NULL);
         sync_supers();          /* Write the superblocks */
@@ -497,7 +497,7 @@ static void free_more_memory(void)
         struct zone **zones;
         pg_data_t *pgdat;
 
-        wakeup_bdflush(1024);
+        wakeup_pdflush(1024);
         yield();
 
         for_each_pgdat(pgdat) {
diff --git a/fs/char_dev.c b/fs/char_dev.c
index e82aac9cc2f5..a69a5d8a406f 100644
--- a/fs/char_dev.c
+++ b/fs/char_dev.c
@@ -150,7 +150,7 @@ __unregister_chrdev_region(unsigned major, unsigned baseminor, int minorct)
         struct char_device_struct *cd = NULL, **cp;
         int i = major_to_index(major);
 
-        up(&chrdevs_lock);
+        down(&chrdevs_lock);
         for (cp = &chrdevs[i]; *cp; cp = &(*cp)->next)
                 if ((*cp)->major == major &&
                     (*cp)->baseminor == baseminor &&
diff --git a/fs/ext3/balloc.c b/fs/ext3/balloc.c
index ccd632fcc6d8..e463dca008e4 100644
--- a/fs/ext3/balloc.c
+++ b/fs/ext3/balloc.c
@@ -749,24 +749,24 @@ fail_access:
  *      to find a free region that is of my size and has not
  *      been reserved.
  *
- *      on succeed, it returns the reservation window to be appended to.
- *      failed, return NULL.
  */
-static struct ext3_reserve_window_node *find_next_reservable_window(
+static int find_next_reservable_window(
                                 struct ext3_reserve_window_node *search_head,
-                                unsigned long size, int *start_block,
+                                struct ext3_reserve_window_node *my_rsv,
+                                struct super_block * sb, int start_block,
                                 int last_block)
 {
         struct rb_node *next;
         struct ext3_reserve_window_node *rsv, *prev;
         int cur;
+        int size = my_rsv->rsv_goal_size;
 
         /* TODO: make the start of the reservation window byte-aligned */
         /* cur = *start_block & ~7;*/
-        cur = *start_block;
+        cur = start_block;
         rsv = search_head;
         if (!rsv)
-                return NULL;
+                return -1;
 
         while (1) {
                 if (cur <= rsv->rsv_end)
@@ -782,11 +782,11 @@ static struct ext3_reserve_window_node *find_next_reservable_window(
                  * space with expected-size (or more)...
                  */
                 if (cur > last_block)
-                        return NULL;            /* fail */
+                        return -1;              /* fail */
 
                 prev = rsv;
                 next = rb_next(&rsv->rsv_node);
-                rsv = list_entry(next, struct ext3_reserve_window_node, rsv_node);
+                rsv = list_entry(next,struct ext3_reserve_window_node,rsv_node);
 
                 /*
                  * Reached the last reservation, we can just append to the
@@ -813,8 +813,25 @@ static struct ext3_reserve_window_node *find_next_reservable_window(
          * return the reservation window that we could append to.
          * succeed.
          */
-        *start_block = cur;
-        return prev;
+
+        if ((prev != my_rsv) && (!rsv_is_empty(&my_rsv->rsv_window)))
+                rsv_window_remove(sb, my_rsv);
+
+        /*
+         * Let's book the whole avaliable window for now.  We will check the
+         * disk bitmap later and then, if there are free blocks then we adjust
+         * the window size if it's larger than requested.
+         * Otherwise, we will remove this node from the tree next time
+         * call find_next_reservable_window.
+         */
+        my_rsv->rsv_start = cur;
+        my_rsv->rsv_end = cur + size - 1;
+        my_rsv->rsv_alloc_hit = 0;
+
+        if (prev != my_rsv)
+                ext3_rsv_window_add(sb, my_rsv);
+
+        return 0;
 }
 
 /**
@@ -852,6 +869,7 @@ static struct ext3_reserve_window_node *find_next_reservable_window(
  *      @sb: the super block
  *      @group: the group we are trying to allocate in
  *      @bitmap_bh: the block group block bitmap
+ *
  */
 static int alloc_new_reservation(struct ext3_reserve_window_node *my_rsv,
                 int goal, struct super_block *sb,
@@ -860,10 +878,10 @@ static int alloc_new_reservation(struct ext3_reserve_window_node *my_rsv,
         struct ext3_reserve_window_node *search_head;
         int group_first_block, group_end_block, start_block;
         int first_free_block;
-        int reservable_space_start;
-        struct ext3_reserve_window_node *prev_rsv;
         struct rb_root *fs_rsv_root = &EXT3_SB(sb)->s_rsv_window_root;
         unsigned long size;
+        int ret;
+        spinlock_t *rsv_lock = &EXT3_SB(sb)->s_rsv_window_lock;
 
         group_first_block = le32_to_cpu(EXT3_SB(sb)->s_es->s_first_data_block) +
                                 group * EXT3_BLOCKS_PER_GROUP(sb);
@@ -875,6 +893,7 @@ static int alloc_new_reservation(struct ext3_reserve_window_node *my_rsv,
                 start_block = goal + group_first_block;
 
         size = my_rsv->rsv_goal_size;
+
         if (!rsv_is_empty(&my_rsv->rsv_window)) {
                 /*
                  * if the old reservation is cross group boundary
@@ -908,6 +927,8 @@ static int alloc_new_reservation(struct ext3_reserve_window_node *my_rsv,
                         my_rsv->rsv_goal_size= size;
                 }
         }
+
+        spin_lock(rsv_lock);
         /*
          * shift the search start to the window near the goal block
          */
@@ -921,11 +942,16 @@ static int alloc_new_reservation(struct ext3_reserve_window_node *my_rsv,
          * need to check the bitmap after we found a reservable window.
          */
 retry:
-        prev_rsv = find_next_reservable_window(search_head, size,
-                                                &start_block, group_end_block);
-        if (prev_rsv == NULL)
-                goto failed;
-        reservable_space_start = start_block;
+        ret = find_next_reservable_window(search_head, my_rsv, sb,
+                                                start_block, group_end_block);
+
+        if (ret == -1) {
+                if (!rsv_is_empty(&my_rsv->rsv_window))
+                        rsv_window_remove(sb, my_rsv);
+                spin_unlock(rsv_lock);
+                return -1;
+        }
+
         /*
          * On success, find_next_reservable_window() returns the
          * reservation window where there is a reservable space after it.
@@ -937,8 +963,9 @@ retry:
          * block. Search start from the start block of the reservable space
          * we just found.
          */
+        spin_unlock(rsv_lock);
         first_free_block = bitmap_search_next_usable_block(
-                        reservable_space_start - group_first_block,
+                        my_rsv->rsv_start - group_first_block,
                         bitmap_bh, group_end_block - group_first_block + 1);
 
         if (first_free_block < 0) {
@@ -946,54 +973,29 @@ retry:
                  * no free block left on the bitmap, no point
                  * to reserve the space. return failed.
                  */
-                goto failed;
+                spin_lock(rsv_lock);
+                if (!rsv_is_empty(&my_rsv->rsv_window))
+                        rsv_window_remove(sb, my_rsv);
+                spin_unlock(rsv_lock);
+                return -1;              /* failed */
         }
+
         start_block = first_free_block + group_first_block;
         /*
          * check if the first free block is within the
-         * free space we just found
+         * free space we just reserved
          */
-        if ((start_block >= reservable_space_start) &&
-          (start_block < reservable_space_start + size))
-                goto found_rsv_window;
+        if (start_block >= my_rsv->rsv_start && start_block < my_rsv->rsv_end)
+                return 0;               /* success */
         /*
          * if the first free bit we found is out of the reservable space
-         * this means there is no free block on the reservable space
-         * we should continue search for next reservable space,
+         * continue search for next reservable space,
          * start from where the free block is,
          * we also shift the list head to where we stopped last time
          */
-        search_head = prev_rsv;
+        search_head = my_rsv;
+        spin_lock(rsv_lock);
         goto retry;
-
-found_rsv_window:
-        /*
-         * great! the reservable space contains some free blocks.
-         * if the search returns that we should add the new
-         * window just next to where the old window, we don't
-         * need to remove the old window first then add it to the
-         * same place, just update the new start and new end.
-         */
-        if (my_rsv != prev_rsv)  {
-                if (!rsv_is_empty(&my_rsv->rsv_window))
-                        rsv_window_remove(sb, my_rsv);
-        }
-        my_rsv->rsv_start = reservable_space_start;
-        my_rsv->rsv_end = my_rsv->rsv_start + size - 1;
-        my_rsv->rsv_alloc_hit = 0;
-        if (my_rsv != prev_rsv)  {
-                ext3_rsv_window_add(sb, my_rsv);
-        }
-        return 0;               /* succeed */
-failed:
-        /*
-         * failed to find a new reservation window in the current
-         * group, remove the current(stale) reservation window
-         * if there is any
-         */
-        if (!rsv_is_empty(&my_rsv->rsv_window))
-                rsv_window_remove(sb, my_rsv);
-        return -1;              /* failed */
 }
 
 /*
@@ -1023,7 +1025,6 @@ ext3_try_to_allocate_with_rsv(struct super_block *sb, handle_t *handle,
                         int goal, struct ext3_reserve_window_node * my_rsv,
                         int *errp)
 {
-        spinlock_t *rsv_lock;
         unsigned long group_first_block;
         int ret = 0;
         int fatal;
@@ -1052,7 +1053,6 @@ ext3_try_to_allocate_with_rsv(struct super_block *sb, handle_t *handle,
                 ret = ext3_try_to_allocate(sb, handle, group, bitmap_bh, goal, NULL);
                 goto out;
         }
-        rsv_lock = &EXT3_SB(sb)->s_rsv_window_lock;
         /*
          * goal is a group relative block number (if there is a goal)
          * 0 < goal < EXT3_BLOCKS_PER_GROUP(sb)
@@ -1078,30 +1078,21 @@ ext3_try_to_allocate_with_rsv(struct super_block *sb, handle_t *handle,
          * then we could go to allocate from the reservation window directly.
          */
         while (1) {
-                struct ext3_reserve_window rsv_copy;
-
-                rsv_copy._rsv_start = my_rsv->rsv_start;
-                rsv_copy._rsv_end = my_rsv->rsv_end;
-
-                if (rsv_is_empty(&rsv_copy) || (ret < 0) ||
-                        !goal_in_my_reservation(&rsv_copy, goal, group, sb)) {
-                        spin_lock(rsv_lock);
+                if (rsv_is_empty(&my_rsv->rsv_window) || (ret < 0) ||
+                        !goal_in_my_reservation(&my_rsv->rsv_window, goal, group, sb)) {
                         ret = alloc_new_reservation(my_rsv, goal, sb,
                                                         group, bitmap_bh);
-                        rsv_copy._rsv_start = my_rsv->rsv_start;
-                        rsv_copy._rsv_end = my_rsv->rsv_end;
-                        spin_unlock(rsv_lock);
                         if (ret < 0)
                                 break;                  /* failed */
 
-                        if (!goal_in_my_reservation(&rsv_copy, goal, group, sb))
+                        if (!goal_in_my_reservation(&my_rsv->rsv_window, goal, group, sb))
                                 goal = -1;
                 }
-                if ((rsv_copy._rsv_start >= group_first_block + EXT3_BLOCKS_PER_GROUP(sb))
-                    || (rsv_copy._rsv_end < group_first_block))
+                if ((my_rsv->rsv_start >= group_first_block + EXT3_BLOCKS_PER_GROUP(sb))
+                    || (my_rsv->rsv_end < group_first_block))
                         BUG();
                 ret = ext3_try_to_allocate(sb, handle, group, bitmap_bh, goal,
-                                           &rsv_copy);
+                                           &my_rsv->rsv_window);
                 if (ret >= 0) {
                         my_rsv->rsv_alloc_hit++;
                         break;                          /* succeed */
diff --git a/fs/ext3/file.c b/fs/ext3/file.c
index 5ad8cf0292df..98e78345ead9 100644
--- a/fs/ext3/file.c
+++ b/fs/ext3/file.c
@@ -36,7 +36,11 @@ static int ext3_release_file (struct inode * inode, struct file * filp)
         /* if we are the last writer on the inode, drop the block reservation */
         if ((filp->f_mode & FMODE_WRITE) &&
                         (atomic_read(&inode->i_writecount) == 1))
+        {
+                down(&EXT3_I(inode)->truncate_sem);
                 ext3_discard_reservation(inode);
+                up(&EXT3_I(inode)->truncate_sem);
+        }
         if (is_dx(inode) && filp->private_data)
                 ext3_htree_free_dir_info(filp->private_data);
 
diff --git a/fs/ext3/super.c b/fs/ext3/super.c
index b4b3e8a39131..a6d1779d7de4 100644
--- a/fs/ext3/super.c
+++ b/fs/ext3/super.c
@@ -944,7 +944,8 @@ clear_qf_name:
                                         "for remount\n");
                                 return 0;
                         }
-                        match_int(&args[0], &option);
+                        if (match_int(&args[0], &option) != 0)
+                                return 0;
                         *n_blocks_count = option;
                         break;
                 case Opt_nobh:
diff --git a/fs/fat/cache.c b/fs/fat/cache.c
index 7c52e465a619..77c24fcf712a 100644
--- a/fs/fat/cache.c
+++ b/fs/fat/cache.c
@@ -56,7 +56,7 @@ int __init fat_cache_init(void)
         return 0;
 }
 
-void __exit fat_cache_destroy(void)
+void fat_cache_destroy(void)
 {
         if (kmem_cache_destroy(fat_cache_cachep))
                 printk(KERN_INFO "fat_cache: not all structures were freed\n");
diff --git a/fs/fat/inode.c b/fs/fat/inode.c
index 8ccee8415488..96ae85b67eba 100644
--- a/fs/fat/inode.c
+++ b/fs/fat/inode.c
@@ -1327,16 +1327,25 @@ out_fail:
 EXPORT_SYMBOL(fat_fill_super);
 
 int __init fat_cache_init(void);
-void __exit fat_cache_destroy(void);
+void fat_cache_destroy(void);
 
 static int __init init_fat_fs(void)
 {
-        int ret;
+        int err;
 
-        ret = fat_cache_init();
-        if (ret < 0)
-                return ret;
-        return fat_init_inodecache();
+        err = fat_cache_init();
+        if (err)
+                return err;
+
+        err = fat_init_inodecache();
+        if (err)
+                goto failed;
+
+        return 0;
+
+failed:
+        fat_cache_destroy();
+        return err;
 }
 
 static void __exit exit_fat_fs(void)
diff --git a/fs/freevxfs/vxfs.h b/fs/freevxfs/vxfs.h
index 8da0252642a4..583bd78086d8 100644
--- a/fs/freevxfs/vxfs.h
+++ b/fs/freevxfs/vxfs.h
@@ -37,7 +37,6 @@
  * superblocks of the Veritas Filesystem.
  */
 #include <linux/types.h>
-#include "vxfs_kcompat.h"
 
 
 /*
diff --git a/fs/freevxfs/vxfs_bmap.c b/fs/freevxfs/vxfs_bmap.c
index bc4b57da306a..d3f6b2835bc8 100644
--- a/fs/freevxfs/vxfs_bmap.c
+++ b/fs/freevxfs/vxfs_bmap.c
@@ -101,7 +101,7 @@ vxfs_bmap_ext4(struct inode *ip, long bn)
         return 0;
 
 fail_size:
-        printk("vxfs: indirect extent to big!\n");
+        printk("vxfs: indirect extent too big!\n");
 fail_buf:
         return 0;
 }
diff --git a/fs/freevxfs/vxfs_fshead.c b/fs/freevxfs/vxfs_fshead.c
index 05b19f70bf97..6dee109aeea4 100644
--- a/fs/freevxfs/vxfs_fshead.c
+++ b/fs/freevxfs/vxfs_fshead.c
@@ -78,17 +78,18 @@ vxfs_getfsh(struct inode *ip, int which)
         struct buffer_head              *bp;
 
         bp = vxfs_bread(ip, which);
-        if (buffer_mapped(bp)) {
+        if (bp) {
                 struct vxfs_fsh         *fhp;
 
-                if (!(fhp = kmalloc(sizeof(*fhp), SLAB_KERNEL)))
-                        return NULL;
+                if (!(fhp = kmalloc(sizeof(*fhp), GFP_KERNEL)))
+                        goto out;
                 memcpy(fhp, bp->b_data, sizeof(*fhp));
 
-                brelse(bp);
+                put_bh(bp);
                 return (fhp);
         }
-
+out:
+        brelse(bp);
         return NULL;
 }
 
diff --git a/fs/freevxfs/vxfs_kcompat.h b/fs/freevxfs/vxfs_kcompat.h
deleted file mode 100644
index 342a4cc860f4..000000000000
--- a/fs/freevxfs/vxfs_kcompat.h
+++ /dev/null
@@ -1,49 +0,0 @@
-#ifndef _VXFS_KCOMPAT_H
-#define _VXFS_KCOMPAT_H
-
-#include <linux/version.h>
-
-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
-
-#include <linux/blkdev.h>
-
-typedef long sector_t;
-
-/* From include/linux/fs.h (Linux 2.5.2-pre3)  */
-static inline struct buffer_head * sb_bread(struct super_block *sb, int block)
-{
-        return bread(sb->s_dev, block, sb->s_blocksize);
-}
-
-/* Dito.  */
-static inline void map_bh(struct buffer_head *bh, struct super_block *sb, int block)
-{
-        bh->b_state |= 1 << BH_Mapped;
-        bh->b_dev = sb->s_dev;
-        bh->b_blocknr = block;
-}
-
-/* From fs/block_dev.c (Linux 2.5.2-pre2)  */
-static inline int sb_set_blocksize(struct super_block *sb, int size)
-{
-        int bits;
-        if (set_blocksize(sb->s_dev, size) < 0)
-                return 0;
-        sb->s_blocksize = size;
-        for (bits = 9, size >>= 9; size >>= 1; bits++)
-                ;
-        sb->s_blocksize_bits = bits;
-        return sb->s_blocksize;
-}
-
-/* Dito.  */
-static inline int sb_min_blocksize(struct super_block *sb, int size)
-{
-        int minsize = get_hardsect_size(sb->s_dev);
-        if (size < minsize)
-                size = minsize;
-        return sb_set_blocksize(sb, size);
-}
-
-#endif /* Kernel 2.4 */
-#endif /* _VXFS_KCOMPAT_H */
diff --git a/fs/freevxfs/vxfs_lookup.c b/fs/freevxfs/vxfs_lookup.c
index 506ae251d2c0..554eb455722c 100644
--- a/fs/freevxfs/vxfs_lookup.c
+++ b/fs/freevxfs/vxfs_lookup.c
@@ -61,13 +61,13 @@ struct file_operations vxfs_dir_operations = {
 };
 
  
-static __inline__ u_long
+static inline u_long
 dir_pages(struct inode *inode)
 {
         return (inode->i_size + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT;
 }
  
-static __inline__ u_long
+static inline u_long
 dir_blocks(struct inode *ip)
 {
         u_long                  bsize = ip->i_sb->s_blocksize;
@@ -79,7 +79,7 @@ dir_blocks(struct inode *ip)
  *
  * len <= VXFS_NAMELEN and de != NULL are guaranteed by caller.
  */
-static __inline__ int
+static inline int
 vxfs_match(int len, const char * const name, struct vxfs_direct *de)
 {
         if (len != de->d_namelen)
@@ -89,7 +89,7 @@ vxfs_match(int len, const char * const name, struct vxfs_direct *de)
         return !memcmp(name, de->d_name, len);
 }
 
-static __inline__ struct vxfs_direct *
+static inline struct vxfs_direct *
 vxfs_next_entry(struct vxfs_direct *de)
 {
         return ((struct vxfs_direct *)((char*)de + de->d_reclen));
diff --git a/fs/freevxfs/vxfs_olt.c b/fs/freevxfs/vxfs_olt.c
index 7a204e31aad9..133476201d84 100644
--- a/fs/freevxfs/vxfs_olt.c
+++ b/fs/freevxfs/vxfs_olt.c
@@ -38,7 +38,7 @@
 #include "vxfs_olt.h"
 
 
-static __inline__ void
+static inline void
 vxfs_get_fshead(struct vxfs_oltfshead *fshp, struct vxfs_sb_info *infp)
 {
         if (infp->vsi_fshino)
@@ -46,7 +46,7 @@ vxfs_get_fshead(struct vxfs_oltfshead *fshp, struct vxfs_sb_info *infp)
         infp->vsi_fshino = fshp->olt_fsino[0];
 }
 
-static __inline__ void
+static inline void
 vxfs_get_ilist(struct vxfs_oltilist *ilistp, struct vxfs_sb_info *infp)
 {
         if (infp->vsi_iext)
@@ -54,7 +54,7 @@ vxfs_get_ilist(struct vxfs_oltilist *ilistp, struct vxfs_sb_info *infp)
         infp->vsi_iext = ilistp->olt_iext[0]; 
 }
 
-static __inline__ u_long
+static inline u_long
 vxfs_oblock(struct super_block *sbp, daddr_t block, u_long bsize)
 {
         if (sbp->s_blocksize % bsize)
@@ -104,8 +104,8 @@ vxfs_read_olt(struct super_block *sbp, u_long bsize)
                 goto fail;
         }
 
-        oaddr = (char *)bp->b_data + op->olt_size;
-        eaddr = (char *)bp->b_data + (infp->vsi_oltsize * sbp->s_blocksize);
+        oaddr = bp->b_data + op->olt_size;
+        eaddr = bp->b_data + (infp->vsi_oltsize * sbp->s_blocksize);
 
         while (oaddr < eaddr) {
                 struct vxfs_oltcommon   *ocp =
diff --git a/fs/freevxfs/vxfs_subr.c b/fs/freevxfs/vxfs_subr.c
index 5e305612054a..50aae77651b2 100644
--- a/fs/freevxfs/vxfs_subr.c
+++ b/fs/freevxfs/vxfs_subr.c
@@ -36,7 +36,6 @@
 #include <linux/slab.h>
 #include <linux/pagemap.h>
 
-#include "vxfs_kcompat.h"
 #include "vxfs_extern.h"
 
 
diff --git a/fs/freevxfs/vxfs_super.c b/fs/freevxfs/vxfs_super.c
index 0ae2c7b8182a..27f66d3e8a04 100644
--- a/fs/freevxfs/vxfs_super.c
+++ b/fs/freevxfs/vxfs_super.c
@@ -155,12 +155,11 @@ static int vxfs_fill_super(struct super_block *sbp, void *dp, int silent)
 
         sbp->s_flags |= MS_RDONLY;
 
-        infp = kmalloc(sizeof(*infp), GFP_KERNEL);
+        infp = kcalloc(1, sizeof(*infp), GFP_KERNEL);
         if (!infp) {
                 printk(KERN_WARNING "vxfs: unable to allocate incore superblock\n");
                 return -ENOMEM;
         }
-        memset(infp, 0, sizeof(*infp));
 
         bsize = sb_min_blocksize(sbp, BLOCK_SIZE);
         if (!bsize) {
@@ -196,7 +195,7 @@ static int vxfs_fill_super(struct super_block *sbp, void *dp, int silent)
 #endif
 
         sbp->s_magic = rsbp->vs_magic;
-        sbp->s_fs_info = (void *)infp;
+        sbp->s_fs_info = infp;
 
         infp->vsi_raw = rsbp;
         infp->vsi_bp = bp;
@@ -263,7 +262,7 @@ vxfs_init(void)
                         sizeof(struct vxfs_inode_info), 0, 
                         SLAB_RECLAIM_ACCOUNT, NULL, NULL);
         if (vxfs_inode_cachep)
-                return (register_filesystem(&vxfs_fs_type));
+                return register_filesystem(&vxfs_fs_type);
         return -ENOMEM;
 }
 
diff --git a/fs/ioprio.c b/fs/ioprio.c
new file mode 100644
index 000000000000..663e420636d6
--- /dev/null
+++ b/fs/ioprio.c
@@ -0,0 +1,172 @@
+/*
+ * fs/ioprio.c
+ *
+ * Copyright (C) 2004 Jens Axboe <axboe@suse.de>
+ *
+ * Helper functions for setting/querying io priorities of processes. The
+ * system calls closely mimmick getpriority/setpriority, see the man page for
+ * those. The prio argument is a composite of prio class and prio data, where
+ * the data argument has meaning within that class. The standard scheduling
+ * classes have 8 distinct prio levels, with 0 being the highest prio and 7
+ * being the lowest.
+ *
+ * IOW, setting BE scheduling class with prio 2 is done ala:
+ *
+ * unsigned int prio = (IOPRIO_CLASS_BE << IOPRIO_CLASS_SHIFT) | 2;
+ *
+ * ioprio_set(PRIO_PROCESS, pid, prio);
+ *
+ * See also Documentation/block/ioprio.txt
+ *
+ */
+#include <linux/kernel.h>
+#include <linux/ioprio.h>
+#include <linux/blkdev.h>
+
+static int set_task_ioprio(struct task_struct *task, int ioprio)
+{
+        struct io_context *ioc;
+
+        if (task->uid != current->euid &&
+            task->uid != current->uid && !capable(CAP_SYS_NICE))
+                return -EPERM;
+
+        task_lock(task);
+
+        task->ioprio = ioprio;
+
+        ioc = task->io_context;
+        if (ioc && ioc->set_ioprio)
+                ioc->set_ioprio(ioc, ioprio);
+
+        task_unlock(task);
+        return 0;
+}
+
+asmlinkage int sys_ioprio_set(int which, int who, int ioprio)
+{
+        int class = IOPRIO_PRIO_CLASS(ioprio);
+        int data = IOPRIO_PRIO_DATA(ioprio);
+        struct task_struct *p, *g;
+        struct user_struct *user;
+        int ret;
+
+        switch (class) {
+                case IOPRIO_CLASS_RT:
+                        if (!capable(CAP_SYS_ADMIN))
+                                return -EPERM;
+                        /* fall through, rt has prio field too */
+                case IOPRIO_CLASS_BE:
+                        if (data >= IOPRIO_BE_NR || data < 0)
+                                return -EINVAL;
+
+                        break;
+                case IOPRIO_CLASS_IDLE:
+                        break;
+                default:
+                        return -EINVAL;
+        }
+
+        ret = -ESRCH;
+        read_lock_irq(&tasklist_lock);
+        switch (which) {
+                case IOPRIO_WHO_PROCESS:
+                        if (!who)
+                                p = current;
+                        else
+                                p = find_task_by_pid(who);
+                        if (p)
+                                ret = set_task_ioprio(p, ioprio);
+                        break;
+                case IOPRIO_WHO_PGRP:
+                        if (!who)
+                                who = process_group(current);
+                        do_each_task_pid(who, PIDTYPE_PGID, p) {
+                                ret = set_task_ioprio(p, ioprio);
+                                if (ret)
+                                        break;
+                        } while_each_task_pid(who, PIDTYPE_PGID, p);
+                        break;
+                case IOPRIO_WHO_USER:
+                        if (!who)
+                                user = current->user;
+                        else
+                                user = find_user(who);
+
+                        if (!user)
+                                break;
+
+                        do_each_thread(g, p) {
+                                if (p->uid != who)
+                                        continue;
+                                ret = set_task_ioprio(p, ioprio);
+                                if (ret)
+                                        break;
+                        } while_each_thread(g, p);
+
+                        if (who)
+                                free_uid(user);
+                        break;
+                default:
+                        ret = -EINVAL;
+        }
+
+        read_unlock_irq(&tasklist_lock);
+        return ret;
+}
+
+asmlinkage int sys_ioprio_get(int which, int who)
+{
+        struct task_struct *g, *p;
+        struct user_struct *user;
+        int ret = -ESRCH;
+
+        read_lock_irq(&tasklist_lock);
+        switch (which) {
+                case IOPRIO_WHO_PROCESS:
+                        if (!who)
+                                p = current;
+                        else
+                                p = find_task_by_pid(who);
+                        if (p)
+                                ret = p->ioprio;
+                        break;
+                case IOPRIO_WHO_PGRP:
+                        if (!who)
+                                who = process_group(current);
+                        do_each_task_pid(who, PIDTYPE_PGID, p) {
+                                if (ret == -ESRCH)
+                                        ret = p->ioprio;
+                                else
+                                        ret = ioprio_best(ret, p->ioprio);
+                        } while_each_task_pid(who, PIDTYPE_PGID, p);
+                        break;
+                case IOPRIO_WHO_USER:
+                        if (!who)
+                                user = current->user;
+                        else
+                                user = find_user(who);
+
+                        if (!user)
+                                break;
+
+                        do_each_thread(g, p) {
+                                if (p->uid != user->uid)
+                                        continue;
+                                if (ret == -ESRCH)
+                                        ret = p->ioprio;
+                                else
+                                        ret = ioprio_best(ret, p->ioprio);
+                        } while_each_thread(g, p);
+
+                        if (who)
+                                free_uid(user);
+                        break;
+                default:
+                        ret = -EINVAL;
+        }
+
+        read_unlock_irq(&tasklist_lock);
+        return ret;
+}
+
diff --git a/fs/nfs/nfs3acl.c b/fs/nfs/nfs3acl.c
index ee3536fc84a3..1b7a3ef2f813 100644
--- a/fs/nfs/nfs3acl.c
+++ b/fs/nfs/nfs3acl.c
@@ -2,7 +2,7 @@
 #include <linux/nfs.h>
 #include <linux/nfs3.h>
 #include <linux/nfs_fs.h>
-#include <linux/xattr_acl.h>
+#include <linux/posix_acl_xattr.h>
 #include <linux/nfsacl.h>
 
 #define NFSDBG_FACILITY NFSDBG_PROC
@@ -53,9 +53,9 @@ ssize_t nfs3_getxattr(struct dentry *dentry, const char *name,
         struct posix_acl *acl;
         int type, error = 0;
 
-        if (strcmp(name, XATTR_NAME_ACL_ACCESS) == 0)
+        if (strcmp(name, POSIX_ACL_XATTR_ACCESS) == 0)
                 type = ACL_TYPE_ACCESS;
-        else if (strcmp(name, XATTR_NAME_ACL_DEFAULT) == 0)
+        else if (strcmp(name, POSIX_ACL_XATTR_DEFAULT) == 0)
                 type = ACL_TYPE_DEFAULT;
         else
                 return -EOPNOTSUPP;
@@ -82,9 +82,9 @@ int nfs3_setxattr(struct dentry *dentry, const char *name,
         struct posix_acl *acl;
         int type, error;
 
-        if (strcmp(name, XATTR_NAME_ACL_ACCESS) == 0)
+        if (strcmp(name, POSIX_ACL_XATTR_ACCESS) == 0)
                 type = ACL_TYPE_ACCESS;
-        else if (strcmp(name, XATTR_NAME_ACL_DEFAULT) == 0)
+        else if (strcmp(name, POSIX_ACL_XATTR_DEFAULT) == 0)
                 type = ACL_TYPE_DEFAULT;
         else
                 return -EOPNOTSUPP;
@@ -103,9 +103,9 @@ int nfs3_removexattr(struct dentry *dentry, const char *name)
         struct inode *inode = dentry->d_inode;
         int type;
 
-        if (strcmp(name, XATTR_NAME_ACL_ACCESS) == 0)
+        if (strcmp(name, POSIX_ACL_XATTR_ACCESS) == 0)
                 type = ACL_TYPE_ACCESS;
-        else if (strcmp(name, XATTR_NAME_ACL_DEFAULT) == 0)
+        else if (strcmp(name, POSIX_ACL_XATTR_DEFAULT) == 0)
                 type = ACL_TYPE_DEFAULT;
         else
                 return -EOPNOTSUPP;
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index de340ffd33c3..be24ead89d94 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -46,10 +46,9 @@
 #include <linux/nfsd/nfsfh.h>
 #include <linux/quotaops.h>
 #include <linux/dnotify.h>
-#include <linux/xattr_acl.h>
 #include <linux/posix_acl.h>
-#ifdef CONFIG_NFSD_V4
 #include <linux/posix_acl_xattr.h>
+#ifdef CONFIG_NFSD_V4
 #include <linux/xattr.h>
 #include <linux/nfs4.h>
 #include <linux/nfs4_acl.h>
@@ -1872,10 +1871,10 @@ nfsd_get_posix_acl(struct svc_fh *fhp, int type)
                 return ERR_PTR(-EOPNOTSUPP);
         switch(type) {
                 case ACL_TYPE_ACCESS:
-                        name = XATTR_NAME_ACL_ACCESS;
+                        name = POSIX_ACL_XATTR_ACCESS;
                         break;
                 case ACL_TYPE_DEFAULT:
-                        name = XATTR_NAME_ACL_DEFAULT;
+                        name = POSIX_ACL_XATTR_DEFAULT;
                         break;
                 default:
                         return ERR_PTR(-EOPNOTSUPP);
@@ -1919,17 +1918,17 @@ nfsd_set_posix_acl(struct svc_fh *fhp, int type, struct posix_acl *acl)
                 return -EOPNOTSUPP;
         switch(type) {
                 case ACL_TYPE_ACCESS:
-                        name = XATTR_NAME_ACL_ACCESS;
+                        name = POSIX_ACL_XATTR_ACCESS;
                         break;
                 case ACL_TYPE_DEFAULT:
-                        name = XATTR_NAME_ACL_DEFAULT;
+                        name = POSIX_ACL_XATTR_DEFAULT;
                         break;
                 default:
                         return -EOPNOTSUPP;
         }
 
         if (acl && acl->a_count) {
-                size = xattr_acl_size(acl->a_count);
+                size = posix_acl_xattr_size(acl->a_count);
                 value = kmalloc(size, GFP_KERNEL);
                 if (!value)
                         return -ENOMEM;
diff --git a/fs/reiserfs/ioctl.c b/fs/reiserfs/ioctl.c
index 94dc42475a04..76caedf737f2 100644
--- a/fs/reiserfs/ioctl.c
+++ b/fs/reiserfs/ioctl.c
@@ -36,10 +36,16 @@ int reiserfs_ioctl (struct inode * inode, struct file * filp, unsigned int cmd,
         /* following two cases are taken from fs/ext2/ioctl.c by Remy
            Card (card@masi.ibp.fr) */
         case REISERFS_IOC_GETFLAGS:
+                if (!reiserfs_attrs (inode->i_sb))
+                        return -ENOTTY;
+
                 flags = REISERFS_I(inode) -> i_attrs;
                 i_attrs_to_sd_attrs( inode, ( __u16 * ) &flags );
                 return put_user(flags, (int __user *) arg);
         case REISERFS_IOC_SETFLAGS: {
+                if (!reiserfs_attrs (inode->i_sb))
+                        return -ENOTTY;
+
                 if (IS_RDONLY(inode))
                         return -EROFS;
 
diff --git a/fs/reiserfs/journal.c b/fs/reiserfs/journal.c
index 7b87707acc36..d1bcf0da6728 100644
--- a/fs/reiserfs/journal.c
+++ b/fs/reiserfs/journal.c
@@ -645,18 +645,22 @@ struct buffer_chunk {
 
 static void write_chunk(struct buffer_chunk *chunk) {
     int i;
+    get_fs_excl();
     for (i = 0; i < chunk->nr ; i++) {
         submit_logged_buffer(chunk->bh[i]) ;
     }
     chunk->nr = 0;
+    put_fs_excl();
 }
 
 static void write_ordered_chunk(struct buffer_chunk *chunk) {
     int i;
+    get_fs_excl();
     for (i = 0; i < chunk->nr ; i++) {
         submit_ordered_buffer(chunk->bh[i]) ;
     }
     chunk->nr = 0;
+    put_fs_excl();
 }
 
 static int add_to_chunk(struct buffer_chunk *chunk, struct buffer_head *bh,
@@ -918,6 +922,8 @@ static int flush_commit_list(struct super_block *s, struct reiserfs_journal_list
     return 0 ;
   }
 
+  get_fs_excl();
+
   /* before we can put our commit blocks on disk, we have to make sure everyone older than
   ** us is on disk too
   */
@@ -1055,6 +1061,7 @@ put_jl:
 
   if (retval)
     reiserfs_abort (s, retval, "Journal write error in %s", __FUNCTION__);
+  put_fs_excl();
   return retval;
 }
 
@@ -1251,6 +1258,8 @@ static int flush_journal_list(struct super_block *s,
     return 0 ;
   }
 
+  get_fs_excl();
+
   /* if all the work is already done, get out of here */
   if (atomic_read(&(jl->j_nonzerolen)) <= 0 && 
       atomic_read(&(jl->j_commit_left)) <= 0) {
@@ -1450,6 +1459,7 @@ flush_older_and_return:
   put_journal_list(s, jl);
   if (flushall)
     up(&journal->j_flush_sem);
+  put_fs_excl();
   return err ;
 } 
 
@@ -2719,6 +2729,7 @@ relock:
   th->t_trans_id = journal->j_trans_id ;
   unlock_journal(p_s_sb) ;
   INIT_LIST_HEAD (&th->t_list);
+  get_fs_excl();
   return 0 ;
 
 out_fail:
@@ -3526,6 +3537,7 @@ static int do_journal_end(struct reiserfs_transaction_handle *th, struct super_b
   BUG_ON (th->t_refcount > 1);
   BUG_ON (!th->t_trans_id);
 
+  put_fs_excl();
   current->journal_info = th->t_handle_save;
   reiserfs_check_lock_depth(p_s_sb, "journal end");
   if (journal->j_len == 0) {
diff --git a/fs/reiserfs/super.c b/fs/reiserfs/super.c
index 660aefca1fd2..4b80ab95d338 100644
--- a/fs/reiserfs/super.c
+++ b/fs/reiserfs/super.c
@@ -1053,10 +1053,9 @@ static void handle_barrier_mode(struct super_block *s, unsigned long bits) {
 
 static void handle_attrs( struct super_block *s )
 {
-        struct reiserfs_super_block * rs;
+        struct reiserfs_super_block * rs = SB_DISK_SUPER_BLOCK (s);
 
         if( reiserfs_attrs( s ) ) {
-                rs = SB_DISK_SUPER_BLOCK (s);
                 if( old_format_only(s) ) {
                         reiserfs_warning(s, "reiserfs: cannot support attributes on 3.5.x disk format" );
                         REISERFS_SB(s) -> s_mount_opt &= ~ ( 1 << REISERFS_ATTRS );
@@ -1066,6 +1065,8 @@ static void handle_attrs( struct super_block *s )
                                 reiserfs_warning(s, "reiserfs: cannot support attributes until flag is set in super-block" );
                                 REISERFS_SB(s) -> s_mount_opt &= ~ ( 1 << REISERFS_ATTRS );
                 }
+        } else if (le32_to_cpu( rs -> s_flags ) & reiserfs_attrs_cleared) {
+                REISERFS_SB(s)->s_mount_opt |= REISERFS_ATTRS;
         }
 }
 
diff --git a/fs/udf/namei.c b/fs/udf/namei.c
index 3f6dc7112bc6..ac191ed7df0a 100644
--- a/fs/udf/namei.c
+++ b/fs/udf/namei.c
@@ -159,14 +159,12 @@ udf_find_entry(struct inode *dir, struct dentry *dentry,
         char *nameptr;
         uint8_t lfi;
         uint16_t liu;
-        loff_t size = (udf_ext0_offset(dir) + dir->i_size) >> 2;
+        loff_t size;
         kernel_lb_addr bloc, eloc;
         uint32_t extoffset, elen, offset;
         struct buffer_head *bh = NULL;
 
-        if (!dir)
-                return NULL;
-
+        size = (udf_ext0_offset(dir) + dir->i_size) >> 2;
         f_pos = (udf_ext0_offset(dir) >> 2);
 
         fibh->soffset = fibh->eoffset = (f_pos & ((dir->i_sb->s_blocksize - 1) >> 2)) << 2;