The patch titled
autofs4: revert - redo lookup in ttfd
has been added to the -mm tree. Its filename is
autofs4-revert-redo-lookup-in-ttfd.patch
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------------------------------------------------------
Subject: autofs4: revert - redo lookup in ttfd
From: Ian Kent <raven@xxxxxxxxxx>
This patch series enables the use of a single dentry for lookups prior to
the dentry being hashed and so we no longer need to redo the lookup. This
patch reverts the patch of commit
033790449ba9c4dcf8478a87693d33df625c23b5.
Signed-off-by: Ian Kent <raven@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/autofs4/root.c | 21 ---------------------
1 file changed, 21 deletions(-)
diff -puN fs/autofs4/root.c~autofs4-revert-redo-lookup-in-ttfd fs/autofs4/root.c
--- a/fs/autofs4/root.c~autofs4-revert-redo-lookup-in-ttfd
+++ a/fs/autofs4/root.c
@@ -242,7 +242,6 @@ static int try_to_fill_dentry(struct den
{
struct autofs_sb_info *sbi = autofs4_sbi(dentry->d_sb);
struct autofs_info *ino = autofs4_dentry_ino(dentry);
- struct dentry *new;
int status;
/* Block on any pending expiry here; invalidate the dentry
@@ -320,26 +319,6 @@ static int try_to_fill_dentry(struct den
dentry->d_flags &= ~DCACHE_AUTOFS_PENDING;
spin_unlock(&dentry->d_lock);
- /*
- * The dentry that is passed in from lookup may not be the one
- * we end up using, as mkdir can create a new one. If this
- * happens, and another process tries the lookup at the same time,
- * it will set the PENDING flag on this new dentry, but add itself
- * to our waitq. Then, if after the lookup succeeds, the first
- * process that requested the mount performs another lookup of the
- * same directory, it will show up as still pending! So, we need
- * to redo the lookup here and clear pending on that dentry.
- */
- if (d_unhashed(dentry)) {
- new = d_lookup(dentry->d_parent, &dentry->d_name);
- if (new) {
- spin_lock(&new->d_lock);
- new->d_flags &= ~DCACHE_AUTOFS_PENDING;
- spin_unlock(&new->d_lock);
- dput(new);
- }
- }
-
return 0;
}
_
Patches currently in -mm which might be from raven@xxxxxxxxxx are
autofs4-dont-make-expiring-dentry-negative.patch
autofs4-revert-redo-lookup-in-ttfd.patch
autofs4-use-look-aside-list-for-lookups.patch
autofs4-dont-release-directory-mutex-if-called-in-oz_mode.patch
autofs4-use-lookup-intent-flags-to-trigger-mounts.patch
autofs4-use-struct-qstr-in-waitqc.patch
autofs4-fix-pending-mount-race.patch
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