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[PATCH] VFS: extra check inside dentry_unhash()

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d_count check after dget() is always true.

Signed-off-by:	Vasily Averin <vvs@sw.ru>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Vasily Averin 2006-12-06 20:37:07 -08:00 committed by Linus Torvalds
parent 5ac29e62be
commit dc168427e6
1 changed files with 1 additions and 2 deletions
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3
fs/namei.c
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@ -1998,8 +1998,7 @@ asmlinkage long sys_mkdir(const char __user *pathname, int mode)
void dentry_unhash(struct dentry *dentry) void dentry_unhash(struct dentry *dentry)
{ {
dget(dentry); dget(dentry);
if (atomic_read(&dentry->d_count)) shrink_dcache_parent(dentry);
shrink_dcache_parent(dentry);
spin_lock(&dcache_lock); spin_lock(&dcache_lock);
spin_lock(&dentry->d_lock); spin_lock(&dentry->d_lock);
if (atomic_read(&dentry->d_count) == 2) if (atomic_read(&dentry->d_count) == 2)