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autofs4: revert - redo lookup in ttfd

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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
033790449b.

Signed-off-by: Ian Kent <raven@themaw.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Ian Kent 2008-07-23 21:30:11 -07:00 • committed by Linus Torvalds
parent 5f6f4f28b6
commit caf7da3d5d
1 changed files with 0 additions and 21 deletions
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21
fs/autofs4/root.c
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@ -242,7 +242,6 @@ static int try_to_fill_dentry(struct dentry *dentry, int flags)
{ {
struct autofs_sb_info *sbi = autofs4_sbi(dentry->d_sb); struct autofs_sb_info *sbi = autofs4_sbi(dentry->d_sb);
struct autofs_info *ino = autofs4_dentry_ino(dentry); struct autofs_info *ino = autofs4_dentry_ino(dentry);
struct dentry *new;
int status; int status;
/* Block on any pending expiry here; invalidate the dentry /* Block on any pending expiry here; invalidate the dentry
@ -320,26 +319,6 @@ static int try_to_fill_dentry(struct dentry *dentry, int flags)
dentry->d_flags &= ~DCACHE_AUTOFS_PENDING; dentry->d_flags &= ~DCACHE_AUTOFS_PENDING;
spin_unlock(&dentry->d_lock); 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; return 0;
} }