From: Jan Blunck <jblunck@xxxxxxx>
d_lookup() takes rename_lock which is a seq_lock. This is so cheap
it's not worth calling lockless __d_lookup() first from
cache_lookup(). Rename cached_lookup() to cache_lookup() while we're
there.
Signed-off-by: Jan Blunck <jblunck@xxxxxxx>
Signed-off-by: Valerie Aurora <vaurora@xxxxxxxxxx>
Cc: Alexander Viro <viro@xxxxxxxxxxxxxxxxxx>
---
fs/namei.c | 13 ++++---------
1 files changed, 4 insertions(+), 9 deletions(-)
diff --git a/fs/namei.c b/fs/namei.c
index 3f645ce..ae200ba 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -417,15 +417,10 @@ do_revalidate(struct dentry *dentry, struct nameidata *nd)
* Internal lookup() using the new generic dcache.
* SMP-safe
*/
-static struct dentry * cached_lookup(struct dentry * parent, struct qstr * name, struct nameidata *nd)
+static struct dentry *cache_lookup(struct dentry *parent, struct qstr *name,
+ struct nameidata *nd)
{
- struct dentry * dentry = __d_lookup(parent, name);
-
- /* lockess __d_lookup may fail due to concurrent d_move()
- * in some unrelated directory, so try with d_lookup
- */
- if (!dentry)
- dentry = d_lookup(parent, name);
+ struct dentry *dentry = d_lookup(parent, name);
if (dentry && dentry->d_op && dentry->d_op->d_revalidate)
dentry = do_revalidate(dentry, nd);
@@ -1208,7 +1203,7 @@ static struct dentry *__lookup_hash(struct qstr *name,
goto out;
}
- dentry = cached_lookup(base, name, nd);
+ dentry = cache_lookup(base, name, nd);
if (!dentry) {
struct dentry *new;
--
1.5.6.5
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