linux-kernel - [PATCH] reiserfs: Fix hang on umount with quotas when journal is aborted

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Message-ID: <20080402091142.GE2716@duck.suse.cz>
Date:	Wed, 2 Apr 2008 11:11:43 +0200
From:	Jan Kara <jack@...e.cz>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	linux-kernel@...r.kernel.org
Subject: [PATCH] reiserfs: Fix hang on umount with quotas when journal is
	aborted

Call dquot_drop() from reiserfs_dquot_drop() even if we fail to start a
transaction. Otherwise we never get to dropping references to quota structures
from the inode and umount will hang indefinitely.

Signed-off-by: Jan Kara <jack@...e.cz>

---
 fs/reiserfs/super.c |    8 +++++++-
 1 files changed, 7 insertions(+), 1 deletions(-)

diff --git a/fs/reiserfs/super.c b/fs/reiserfs/super.c
index 393cc22..65e17e1 100644
--- a/fs/reiserfs/super.c
+++ b/fs/reiserfs/super.c
@@ -1890,8 +1890,14 @@ static int reiserfs_dquot_drop(struct inode *inode)
 	ret =
 	    journal_begin(&th, inode->i_sb,
 			  2 * REISERFS_QUOTA_DEL_BLOCKS(inode->i_sb));
-	if (ret)
+	if (ret) {
+		/*
+		 * We call dquot_drop() anyway to at least release references
+		 * to quota structures so that umount does not hang.
+		 */
+		dquot_drop(inode);
 		goto out;
+	}
 	ret = dquot_drop(inode);
 	err =
 	    journal_end(&th, inode->i_sb,
-- 
1.5.2.4

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