linux-kernel - [09/21] udf: Mark LVID buffer as uptodate before marking it dirty

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Message-Id: <20120210224851.620013338@clark.kroah.org>
Date:	Fri, 10 Feb 2012 14:47:48 -0800
From:	Greg KH <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
	alan@...rguk.ukuu.org.uk, Namjae Jeon <linkinjeon@...il.com>,
	Jan Kara <jack@...e.cz>, Dave Jones <davej@...hat.com>
Subject: [09/21] udf: Mark LVID buffer as uptodate before marking it dirty

2.6.32-longterm review patch.  If anyone has any objections, please let me know.

------------------

From: Jan Kara <jack@...e.cz>

commit 853a0c25baf96b028de1654bea1e0c8857eadf3d upstream.

When we hit EIO while writing LVID, the buffer uptodate bit is cleared.
This then results in an anoying warning from mark_buffer_dirty() when we
write the buffer again. So just set uptodate flag unconditionally.

Reviewed-by: Namjae Jeon <linkinjeon@...il.com>
Signed-off-by: Jan Kara <jack@...e.cz>
Cc: Dave Jones <davej@...hat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 fs/udf/super.c |    6 ++++++
 1 file changed, 6 insertions(+)

--- a/fs/udf/super.c
+++ b/fs/udf/super.c
@@ -1791,6 +1791,12 @@ static void udf_open_lvid(struct super_b
 			le16_to_cpu(lvid->descTag.descCRCLength)));
 
 	lvid->descTag.tagChecksum = udf_tag_checksum(&lvid->descTag);
+	/*
+	 * We set buffer uptodate unconditionally here to avoid spurious
+	 * warnings from mark_buffer_dirty() when previous EIO has marked
+	 * the buffer as !uptodate
+	 */
+	set_buffer_uptodate(bh);
 	mark_buffer_dirty(bh);
 	sbi->s_lvid_dirty = 0;
 }


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