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authorAlexey Dobriyan <adobriyan@sw.ru>2008-02-08 04:18:27 -0800
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2008-02-08 09:22:23 -0800
commit4237e0d3de38da640d7c977d68f5f7f1d207a631 (patch)
tree0bf02984aef945c5d97a5929b82e7ecd6b7f39ed /fs
parent5b3fe63b19e00f3b2a14a09c979e84163029e390 (diff)
proc: less LOCK operations during lookup
Pseudo-code for lookup effectively is: LOCK kernel LOCK proc_subdir_lock find PDE UNLOCK proc_subdir_lock get inode LOCK proc_subdir_lock goto unlock UNLOCK proc_subdir_lock UNLOCK kernel We can get rid of LOCK/UNLOCK pair after getting inode simply by jumping to unlock_kernel() directly. Signed-off-by: Alexey Dobriyan <adobriyan@sw.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs')
-rw-r--r--fs/proc/generic.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/proc/generic.c b/fs/proc/generic.c
index 6a2fe5187b6..75cd8d709f7 100644
--- a/fs/proc/generic.c
+++ b/fs/proc/generic.c
@@ -406,12 +406,12 @@ struct dentry *proc_lookup(struct inode * dir, struct dentry *dentry, struct nam
spin_unlock(&proc_subdir_lock);
error = -EINVAL;
inode = proc_get_inode(dir->i_sb, ino, de);
- spin_lock(&proc_subdir_lock);
- break;
+ goto out_unlock;
}
}
}
spin_unlock(&proc_subdir_lock);
+out_unlock:
unlock_kernel();
if (inode) {