linux-kernel - [PATCH 7/7] reiserfs: propagate issue-flush error code

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Message-ID: <49D0BCB2.30202@oss.ntt.co.jp>
Date:	Mon, 30 Mar 2009 21:36:02 +0900
From:	Fernando Luis Vázquez Cao 
	<fernando@....ntt.co.jp>
To:	Jeff Garzik <jeff@...zik.org>
CC:	Christoph Hellwig <hch@...radead.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Theodore Tso <tytso@....edu>, Ingo Molnar <mingo@...e.hu>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Arjan van de Ven <arjan@...radead.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Nick Piggin <npiggin@...e.de>, David Rees <drees76@...il.com>,
	Jesper Krogh <jesper@...gh.cc>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	chris.mason@...cle.com, david@...morbit.com, tj@...nel.org,
	bzolnier@...il.com
Subject: [PATCH 7/7] reiserfs: propagate issue-flush error code

blkdev_issue_flush() may fail (i.e. due to media error on FLUSH CACHE
command execution) so its users should check for the return value.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
Signed-off-by: Fernando Luis Vazquez Cao <fernando@....ntt.co.jp>
---

diff -urNp linux-2.6.29-orig/fs/reiserfs/file.c linux-2.6.29/fs/reiserfs/file.c
--- linux-2.6.29-orig/fs/reiserfs/file.c	2009-03-24 08:12:14.000000000 +0900
+++ linux-2.6.29/fs/reiserfs/file.c	2009-03-30 16:19:19.000000000 +0900
@@ -146,8 +146,9 @@ static int reiserfs_sync_file(struct fil
  	reiserfs_write_lock(p_s_inode->i_sb);
  	barrier_done = reiserfs_commit_for_inode(p_s_inode);
  	reiserfs_write_unlock(p_s_inode->i_sb);
-	if (barrier_done != 1 && reiserfs_barrier_flush(p_s_inode->i_sb))
-		blkdev_issue_flush(p_s_inode->i_sb->s_bdev, NULL);
+	if (!n_err && barrier_done != 1 &&
+			reiserfs_barrier_flush(p_s_inode->i_sb))
+		n_err = block_flush_device(p_s_inode->i_sb->s_bdev);
  	if (barrier_done < 0)
  		return barrier_done;
  	return (n_err < 0) ? -EIO : 0;
--
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