From: John McCutchan <ttb@tentacle.dhs.org>
Date: Thu, 4 Aug 2005 20:07:08 +0000 (-0700)
Subject: [PATCH] inotify delete race fix
X-Git-Tag: v2.6.13-rc6~49
X-Git-Url: http://www.pilppa.org/gitweb/gitweb.cgi?a=commitdiff_plain;h=e234f35c54a30d040313e40833dcf623d14629b4;p=linux-2.6-omap-h63xx.git

[PATCH] inotify delete race fix

The included patch fixes a problem where a inotify client would receive a
delete event before the file was actually deleted.  The bug affects both
dnotify & inotify.

Signed-off-by: John McCutchan <ttb@tentacle.dhs.org>
Signed-off-by: Robert Love <rml@novell.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/fs/namei.c b/fs/namei.c
index 4a27eb79811..83559dce428 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;