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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/9p/vfs_inode.c
parentceb5bdc2d246f6d81cf61ed70f325308a11821d2 (diff)
downloadlinux-873feea09ebc980cbd3631b767356ce1eee65ec1.tar.bz2
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/9p/vfs_inode.c')
-rw-r--r--fs/9p/vfs_inode.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c
index df8bbb358d54..59782981b225 100644
--- a/fs/9p/vfs_inode.c
+++ b/fs/9p/vfs_inode.c
@@ -277,11 +277,11 @@ static struct dentry *v9fs_dentry_from_dir_inode(struct inode *inode)
{
struct dentry *dentry;
- spin_lock(&dcache_inode_lock);
+ spin_lock(&inode->i_lock);
/* Directory should have only one entry. */
BUG_ON(S_ISDIR(inode->i_mode) && !list_is_singular(&inode->i_dentry));
dentry = list_entry(inode->i_dentry.next, struct dentry, d_alias);
- spin_unlock(&dcache_inode_lock);
+ spin_unlock(&inode->i_lock);
return dentry;
}