linux-kernel - Re: [PATCH] [MTD] Fix JFFS2 sync silent failure

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Date:	Mon, 19 Apr 2010 13:39:53 +0200
From:	Jörn Engel <joern@...fs.org>
To:	David Woodhouse <dwmw2@...radead.org>
Cc:	Jens Axboe <jens.axboe@...cle.com>, linux-mtd@...ts.infradead.org,
	linux-kernel@...r.kernel.org, Christoph Hellwig <hch@...radead.org>
Subject: Re: [PATCH] [MTD] Fix JFFS2 sync silent failure

On Mon, 19 April 2010 12:20:56 +0200, Jens Axboe wrote:
> 
> Care to send your jffs2 patch separately to David? Then I'll commit a
> modified variant for complaining about missing ->s_bdi on mount.

Sure.

David, this patch is untested.  It looks trivially correct and fixes a
nasty bug, but I don't test jffs2 and only noticed the problem in
passing.

Jörn

-- 
Maintenance in other professions and of other articles is concerned with
the return of the item to its original state; in Software, maintenance
is concerned with moving an item away from its original state.
-- Les Belady

diff --git a/drivers/mtd/mtdsuper.c b/drivers/mtd/mtdsuper.c
index af8b42e..7c00319 100644
--- a/drivers/mtd/mtdsuper.c
+++ b/drivers/mtd/mtdsuper.c
@@ -44,6 +45,7 @@ static int get_sb_mtd_set(struct super_block *sb, void *_mtd)
 
 	sb->s_mtd = mtd;
 	sb->s_dev = MKDEV(MTD_BLOCK_MAJOR, mtd->index);
+	sb->s_bdi = mtd->backing_dev_info;
 	return 0;
 }
 
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