From: Al Viro <viro@zeniv.linux.org.uk>
Date: Mon, 2 Apr 2012 23:22:25 +0000 (-0400)
Subject: dentry leak in simple_fill_super() failure exit
X-Git-Tag: upstream/snapshot3+hdmi~7716^2~1
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=640946f20390e492694f9d7470656f2262385951;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git

dentry leak in simple_fill_super() failure exit

d_genocide() does _not_ evict dentries; it just removes extra ref
pinning each of those.  Normally it's followed by shrinking the
tree (it's done just before generic_shutdown_super() by kill_litter_super()),
but in case of simple_fill_super() nothing of that kind will follow.
Just do shrink_dcache_parent() manually.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---

diff --git a/fs/libfs.c b/fs/libfs.c
index 358094f..18d08f5 100644
--- a/fs/libfs.c
+++ b/fs/libfs.c
@@ -529,6 +529,7 @@ int simple_fill_super(struct super_block *s, unsigned long magic,
 	return 0;
 out:
 	d_genocide(root);
+	shrink_dcache_parent(root);
 	dput(root);
 	return -ENOMEM;
 }