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authorJeff Layton <jlayton@redhat.com>2012-11-28 11:30:53 -0500
committerAl Viro <viro@zeniv.linux.org.uk>2012-12-20 13:57:36 -0500
commit39e3c9553f34381a1b664c27b0c696a266a5735e (patch)
treef754789dccac7a017ee8feb602b01dd42b73023d /fs/dcache.c
parent741b7c3f77937b2fb7c10aeb4c5c621463582583 (diff)
downloadlinux-39e3c9553f34381a1b664c27b0c696a266a5735e.tar.bz2
vfs: remove DCACHE_NEED_LOOKUP
The code that relied on that flag was ripped out of btrfs quite some time ago, and never added back. Josef indicated that he was going to take a different approach to the problem in btrfs, and that we could just eliminate this flag. Cc: Josef Bacik <jbacik@fusionio.com> Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/dcache.c')
-rw-r--r--fs/dcache.c33
1 files changed, 1 insertions, 32 deletions
diff --git a/fs/dcache.c b/fs/dcache.c
index 3a463d0c4fe8..1782be3fc3ef 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -455,24 +455,6 @@ void d_drop(struct dentry *dentry)
EXPORT_SYMBOL(d_drop);
/*
- * d_clear_need_lookup - drop a dentry from cache and clear the need lookup flag
- * @dentry: dentry to drop
- *
- * This is called when we do a lookup on a placeholder dentry that needed to be
- * looked up. The dentry should have been hashed in order for it to be found by
- * the lookup code, but now needs to be unhashed while we do the actual lookup
- * and clear the DCACHE_NEED_LOOKUP flag.
- */
-void d_clear_need_lookup(struct dentry *dentry)
-{
- spin_lock(&dentry->d_lock);
- __d_drop(dentry);
- dentry->d_flags &= ~DCACHE_NEED_LOOKUP;
- spin_unlock(&dentry->d_lock);
-}
-EXPORT_SYMBOL(d_clear_need_lookup);
-
-/*
* Finish off a dentry we've decided to kill.
* dentry->d_lock must be held, returns with it unlocked.
* If ref is non-zero, then decrement the refcount too.
@@ -565,13 +547,7 @@ repeat:
if (d_unhashed(dentry))
goto kill_it;
- /*
- * If this dentry needs lookup, don't set the referenced flag so that it
- * is more likely to be cleaned up by the dcache shrinker in case of
- * memory pressure.
- */
- if (!d_need_lookup(dentry))
- dentry->d_flags |= DCACHE_REFERENCED;
+ dentry->d_flags |= DCACHE_REFERENCED;
dentry_lru_add(dentry);
dentry->d_count--;
@@ -1737,13 +1713,6 @@ struct dentry *d_add_ci(struct dentry *dentry, struct inode *inode,
}
/*
- * We are going to instantiate this dentry, unhash it and clear the
- * lookup flag so we can do that.
- */
- if (unlikely(d_need_lookup(found)))
- d_clear_need_lookup(found);
-
- /*
* Negative dentry: instantiate it unless the inode is a directory and
* already has a dentry.
*/