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authorNick Piggin <npiggin@kernel.dk>2011-01-07 17:50:06 +1100
committerNick Piggin <npiggin@kernel.dk>2011-01-07 17:50:31 +1100
commit873feea09ebc980cbd3631b767356ce1eee65ec1 (patch)
tree59a8fce9b138086abee7cf845f62ff70a390cf81 /fs/notify
parentceb5bdc2d246f6d81cf61ed70f325308a11821d2 (diff)
downloadlinux-873feea09ebc980cbd3631b767356ce1eee65ec1.tar.gz
fs: dcache per-inode inode alias locking
dcache_inode_lock can be replaced with per-inode locking. Use existing
inode->i_lock for this. This is slightly non-trivial because we sometimes
need to find the inode from the dentry, which requires d_inode to be
stabilised (either with refcount or d_lock).

Signed-off-by: Nick Piggin <npiggin@kernel.dk>
Diffstat (limited to 'fs/notify')
-rw-r--r--fs/notify/fsnotify.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/notify/fsnotify.c b/fs/notify/fsnotify.c
index 9be6ec1f36d8..79b47cbb5cd8 100644
--- a/fs/notify/fsnotify.c
+++ b/fs/notify/fsnotify.c
@@ -59,7 +59,7 @@ void __fsnotify_update_child_dentry_flags(struct inode *inode)
 	/* determine if the children should tell inode about their events */
 	watched = fsnotify_inode_watches_children(inode);
 
-	spin_lock(&dcache_inode_lock);
+	spin_lock(&inode->i_lock);
 	/* run all of the dentries associated with this inode.  Since this is a
 	 * directory, there damn well better only be one item on this list */
 	list_for_each_entry(alias, &inode->i_dentry, d_alias) {
@@ -82,7 +82,7 @@ void __fsnotify_update_child_dentry_flags(struct inode *inode)
 		}
 		spin_unlock(&alias->d_lock);
 	}
-	spin_unlock(&dcache_inode_lock);
+	spin_unlock(&inode->i_lock);
 }
 
 /* Notify this dentry's parent about a child's events. */