linux-kernel - Re: [PATCH 2/3] squashfs: gather everything block device specific into block.c

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Message-ID: <8739zhu52t.fsf@tac.ki.iif.hu>
Date:	Tue, 30 Mar 2010 18:50:18 +0200
From:	Ferenc Wagner <wferi@...f.hu>
To:	Phillip Lougher <phillip@...gher.demon.co.uk>
Cc:	Phillip Lougher <phillip.lougher@...il.com>,
	linux-fsdevel@...r.kernel.org, linux-mtd@...ts.infradead.org,
	linux-kernel@...r.kernel.org, linux-embedded@...r.kernel.org
Subject: Re: [PATCH 2/3] squashfs: gather everything block device specific into block.c

---
I lost this free somehow.  Does squashfs_put_super() need protection
from multiple invocation?  If not, this kfree could be removed from
there, and the condition from both places.

 fs/squashfs/backend.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/fs/squashfs/backend.c b/fs/squashfs/backend.c
index a6136ca..0ae37ab 100644
--- a/fs/squashfs/backend.c
+++ b/fs/squashfs/backend.c
@@ -24,6 +24,10 @@ int squashfs_find_backend(struct file_system_type *fs_type, int flags,
 
 void squashfs_kill_super(struct super_block *sb)
 {
+	if (sb->s_fs_info) {
+		kfree(sb->s_fs_info);
+		sb->s_fs_info = NULL;
+	}
 #ifdef CONFIG_BLOCK
 	if (sb->s_bdev) {
 		kill_block_super(sb);
-- 
1.6.5

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