13 files changed, 57 insertions, 20 deletions

diff --git a/fs/Kconfig b/fs/Kconfig
index 5d0c4be43dba..e54be7058359 100644
--- a/fs/Kconfig
+++ b/fs/Kconfig
@@ -363,12 +363,15 @@ config INOTIFY
         bool "Inotify file change notification support"
         default y
         ---help---
-          Say Y here to enable inotify support and the /dev/inotify character
-          device.  Inotify is a file change notification system and a
+          Say Y here to enable inotify support and the associated system
+          calls.  Inotify is a file change notification system and a
           replacement for dnotify.  Inotify fixes numerous shortcomings in
           dnotify and introduces several new features.  It allows monitoring
-          of both files and directories via a single open fd.  Multiple file
-          events are supported.
+          of both files and directories via a single open fd.  Other features
+          include multiple file events, one-shot support, and unmount
+          notification.
+
+          For more information, see Documentation/filesystems/inotify.txt
 
           If unsure, say Y.
 
diff --git a/fs/bio.c b/fs/bio.c
index ca8f7a850fe3..249dd6bb66c8 100644
--- a/fs/bio.c
+++ b/fs/bio.c
@@ -261,6 +261,7 @@ inline void __bio_clone(struct bio *bio, struct bio *bio_src)
          */
         bio->bi_vcnt = bio_src->bi_vcnt;
         bio->bi_size = bio_src->bi_size;
+        bio->bi_idx = bio_src->bi_idx;
         bio_phys_segments(q, bio);
         bio_hw_segments(q, bio);
 }
diff --git a/fs/hfs/bnode.c b/fs/hfs/bnode.c
index 6ad1211f84ed..a096c5a56664 100644
--- a/fs/hfs/bnode.c
+++ b/fs/hfs/bnode.c
@@ -480,6 +480,8 @@ void hfs_bnode_put(struct hfs_bnode *node)
                         return;
                 }
                 for (i = 0; i < tree->pages_per_bnode; i++) {
+                        if (!node->page[i])
+                                continue;
                         mark_page_accessed(node->page[i]);
 #if REF_PAGES
                         put_page(node->page[i]);
diff --git a/fs/hfs/extent.c b/fs/hfs/extent.c
index cbc8510ad222..5ea6b3d45eaa 100644
--- a/fs/hfs/extent.c
+++ b/fs/hfs/extent.c
@@ -482,7 +482,8 @@ void hfs_file_truncate(struct inode *inode)
                 page_cache_release(page);
                 mark_inode_dirty(inode);
                 return;
-        }
+        } else if (inode->i_size == HFS_I(inode)->phys_size)
+                return;
         size = inode->i_size + HFS_SB(sb)->alloc_blksz - 1;
         blk_cnt = size / HFS_SB(sb)->alloc_blksz;
         alloc_cnt = HFS_I(inode)->alloc_blocks;
diff --git a/fs/hfsplus/bnode.c b/fs/hfsplus/bnode.c
index 267872e84d71..8868d3b766fd 100644
--- a/fs/hfsplus/bnode.c
+++ b/fs/hfsplus/bnode.c
@@ -643,6 +643,8 @@ void hfs_bnode_put(struct hfs_bnode *node)
                         return;
                 }
                 for (i = 0; i < tree->pages_per_bnode; i++) {
+                        if (!node->page[i])
+                                continue;
                         mark_page_accessed(node->page[i]);
 #if REF_PAGES
                         put_page(node->page[i]);
diff --git a/fs/hfsplus/extents.c b/fs/hfsplus/extents.c
index 376498cc64fd..e7235ca79a95 100644
--- a/fs/hfsplus/extents.c
+++ b/fs/hfsplus/extents.c
@@ -461,7 +461,9 @@ void hfsplus_file_truncate(struct inode *inode)
                 page_cache_release(page);
                 mark_inode_dirty(inode);
                 return;
-        }
+        } else if (inode->i_size == HFSPLUS_I(inode).phys_size)
+                return;
+
         blk_cnt = (inode->i_size + HFSPLUS_SB(sb).alloc_blksz - 1) >> HFSPLUS_SB(sb).alloc_blksz_shift;
         alloc_cnt = HFSPLUS_I(inode).alloc_blocks;
         if (blk_cnt == alloc_cnt)
diff --git a/fs/hostfs/hostfs.h b/fs/hostfs/hostfs.h
index c1516d013bf6..67bca0d4a33b 100644
--- a/fs/hostfs/hostfs.h
+++ b/fs/hostfs/hostfs.h
@@ -69,6 +69,7 @@ extern int read_file(int fd, unsigned long long *offset, char *buf, int len);
 extern int write_file(int fd, unsigned long long *offset, const char *buf,
                       int len);
 extern int lseek_file(int fd, long long offset, int whence);
+extern int fsync_file(int fd, int datasync);
 extern int file_create(char *name, int ur, int uw, int ux, int gr,
                        int gw, int gx, int or, int ow, int ox);
 extern int set_attr(const char *file, struct hostfs_iattr *attrs);
diff --git a/fs/hostfs/hostfs_kern.c b/fs/hostfs/hostfs_kern.c
index 88e68caa3784..b2d18200a003 100644
--- a/fs/hostfs/hostfs_kern.c
+++ b/fs/hostfs/hostfs_kern.c
@@ -382,7 +382,7 @@ int hostfs_file_open(struct inode *ino, struct file *file)
 
 int hostfs_fsync(struct file *file, struct dentry *dentry, int datasync)
 {
-        return(0);
+        return fsync_file(HOSTFS_I(dentry->d_inode)->fd, datasync);
 }
 
 static struct file_operations hostfs_file_fops = {
diff --git a/fs/hostfs/hostfs_user.c b/fs/hostfs/hostfs_user.c
index 4796e8490f7d..b97809deba66 100644
--- a/fs/hostfs/hostfs_user.c
+++ b/fs/hostfs/hostfs_user.c
@@ -153,10 +153,24 @@ int lseek_file(int fd, long long offset, int whence)
         int ret;
 
         ret = lseek64(fd, offset, whence);
-        if(ret < 0) return(-errno);
+        if(ret < 0)
+                return(-errno);
         return(0);
 }
 
+int fsync_file(int fd, int datasync)
+{
+        int ret;
+        if (datasync)
+                ret = fdatasync(fd);
+        else
+                ret = fsync(fd);
+
+        if (ret < 0)
+                return -errno;
+        return 0;
+}
+
 void close_file(void *stream)
 {
         close(*((int *) stream));
diff --git a/fs/inotify.c b/fs/inotify.c
index a8a714e48140..27ebcac5e07f 100644
--- a/fs/inotify.c
+++ b/fs/inotify.c
@@ -90,6 +90,7 @@ struct inotify_device {
         unsigned int            queue_size;     /* size of the queue (bytes) */
         unsigned int            event_count;    /* number of pending events */
         unsigned int            max_events;     /* maximum number of events */
+        u32                     last_wd;        /* the last wd allocated */
 };
 
 /*
@@ -352,7 +353,7 @@ static int inotify_dev_get_wd(struct inotify_device *dev,
         do {
                 if (unlikely(!idr_pre_get(&dev->idr, GFP_KERNEL)))
                         return -ENOSPC;
-                ret = idr_get_new(&dev->idr, watch, &watch->wd);
+                ret = idr_get_new_above(&dev->idr, watch, dev->last_wd, &watch->wd);
         } while (ret == -EAGAIN);
 
         return ret;
@@ -401,6 +402,7 @@ static struct inotify_watch *create_watch(struct inotify_device *dev,
                 return ERR_PTR(ret);
         }
 
+        dev->last_wd = ret;
         watch->mask = mask;
         atomic_set(&watch->count, 0);
         INIT_LIST_HEAD(&watch->d_list);
@@ -899,6 +901,7 @@ asmlinkage long sys_inotify_init(void)
         dev->queue_size = 0;
         dev->max_events = inotify_max_queued_events;
         dev->user = user;
+        dev->last_wd = 0;
         atomic_set(&dev->count, 0);
 
         get_inotify_dev(dev);
diff --git a/fs/namei.c b/fs/namei.c
index 02a824cd3c5c..83559dce4286 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -1801,8 +1801,8 @@ int vfs_rmdir(struct inode *dir, struct dentry *dentry)
         }
         up(&dentry->d_inode->i_sem);
         if (!error) {
-                fsnotify_rmdir(dentry, dentry->d_inode, dir);
                 d_delete(dentry);
+                fsnotify_rmdir(dentry, dentry->d_inode, dir);
         }
         dput(dentry);
 
@@ -1874,8 +1874,14 @@ int vfs_unlink(struct inode *dir, struct dentry *dentry)
 
         /* We don't d_delete() NFS sillyrenamed files--they still exist. */
         if (!error && !(dentry->d_flags & DCACHE_NFSFS_RENAMED)) {
+#if defined(CONFIG_INOTIFY) || defined(CONFIG_DNOTIFY)
+                dget(dentry);
+                d_delete(dentry);
                 fsnotify_unlink(dentry, dir);
+                dput(dentry);
+#else
                 d_delete(dentry);
+#endif
         }
 
         return error;
@@ -2218,7 +2224,7 @@ int vfs_rename(struct inode *old_dir, struct dentry *old_dentry,
                 error = vfs_rename_other(old_dir,old_dentry,new_dir,new_dentry);
         if (!error) {
                 const char *new_name = old_dentry->d_name.name;
-                fsnotify_move(old_dir, new_dir, old_name, new_name, is_dir);
+                fsnotify_move(old_dir, new_dir, old_name, new_name, is_dir, new_dentry->d_inode);
         }
         fsnotify_oldname_free(old_name);
 
diff --git a/fs/sysfs/file.c b/fs/sysfs/file.c
index 335288b9be0f..4013d7905e84 100644
--- a/fs/sysfs/file.c
+++ b/fs/sysfs/file.c
@@ -437,8 +437,8 @@ int sysfs_chmod_file(struct kobject *kobj, struct attribute *attr, mode_t mode)
 {
         struct dentry *dir = kobj->dentry;
         struct dentry *victim;
-        struct sysfs_dirent *sd;
-        umode_t umode = (mode & S_IALLUGO) | S_IFREG;
+        struct inode * inode;
+        struct iattr newattrs;
         int res = -ENOENT;
 
         down(&dir->d_inode->i_sem);
@@ -446,13 +446,15 @@ int sysfs_chmod_file(struct kobject *kobj, struct attribute *attr, mode_t mode)
         if (!IS_ERR(victim)) {
                 if (victim->d_inode &&
                     (victim->d_parent->d_inode == dir->d_inode)) {
-                        sd = victim->d_fsdata;
-                        attr->mode = mode;
-                        sd->s_mode = umode;
-                        victim->d_inode->i_mode = umode;
-                        dput(victim);
-                        res = 0;
+                        inode = victim->d_inode;
+                        down(&inode->i_sem);
+                        newattrs.ia_mode = (mode & S_IALLUGO) |
+                                                (inode->i_mode & ~S_IALLUGO);
+                        newattrs.ia_valid = ATTR_MODE | ATTR_CTIME;
+                        res = notify_change(victim, &newattrs);
+                        up(&inode->i_sem);
                 }
+                dput(victim);
         }
         up(&dir->d_inode->i_sem);
 
diff --git a/fs/sysfs/inode.c b/fs/sysfs/inode.c
index 8de13bafaa76..d727dc960634 100644
--- a/fs/sysfs/inode.c
+++ b/fs/sysfs/inode.c
@@ -85,7 +85,7 @@ int sysfs_setattr(struct dentry * dentry, struct iattr * iattr)
 
                 if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID))
                         mode &= ~S_ISGID;
-                sd_iattr->ia_mode = mode;
+                sd_iattr->ia_mode = sd->s_mode = mode;
         }
 
         return error;