From: Linus Torvalds <torvalds@linux-foundation.org>
To: "Jörn Engel" <joern@logfs.org>
Cc: Jens Axboe <jens.axboe@oracle.com>,
David Woodhouse <dwmw2@infradead.org>,
linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org,
Christoph Hellwig <hch@infradead.org>
Subject: Re: [PATCH] [MTD] Fix JFFS2 sync silent failure
Date: Thu, 22 Apr 2010 07:25:41 -0700 (PDT) [thread overview]
Message-ID: <alpine.LFD.2.00.1004220724170.9086@i5.linux-foundation.org> (raw)
In-Reply-To: <20100422062631.GC27309@logfs.org>
On Thu, 22 Apr 2010, Jörn Engel wrote:
>
> I think this is bad enough that you should be involved. 32a88aa1 broke
> a number of filesystems in a way that sync() would return 0 without
> doing any work. Even politicians are better at keeping the promises.
>
> This is caused by the two-liner in __sync_filesystem:
> if (!sb->s_bdi)
> return 0;
> s_bdi is set implicitly for all filesystems using set_bdev_super(), so
> most block device based filesystems are safe. There are, however, a
> number of odd-balls around:
Umm. Why not just remove the two-liner? It was incorrect. The comment says
"this should be safe", and if it wasn't, then the commit that caused this
all was total crap to begin with.
Why even discuss any other measures?
Linus
next prev parent reply other threads:[~2010-04-22 14:27 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-17 18:40 Jörn Engel
2010-04-19 7:38 ` Jens Axboe
2010-04-19 10:15 ` Jörn Engel
2010-04-19 10:20 ` Jens Axboe
2010-04-19 11:39 ` Jörn Engel
2010-04-22 5:54 ` Jörn Engel
2010-04-22 6:26 ` Jörn Engel
2010-04-22 14:25 ` Linus Torvalds [this message]
2010-04-22 14:33 ` Linus Torvalds
2010-04-22 16:27 ` Jens Axboe
2010-04-22 20:33 ` [Patch] Catch filesystems lacking s_bdi Jörn Engel
2010-04-23 10:05 ` Jens Axboe
2010-04-23 20:55 ` Jörn Engel
2010-04-26 9:48 ` Jens Axboe
2010-04-26 14:32 ` Jörn Engel
2010-04-26 14:38 ` Jens Axboe
2010-04-26 14:45 ` Jens Axboe
2010-04-26 16:30 ` [PATCH 1/2] [MTD] Move mtd_bdi_*mappable to mtdcore.c Jörn Engel
2010-04-26 16:31 ` [PATCH 2/2] [MTD] Call bdi_init() and bdi_register() Jörn Engel
2010-04-26 17:02 ` Jens Axboe
2010-04-26 17:12 ` Jörn Engel
2010-04-27 7:52 ` Jens Axboe
2010-04-27 8:11 ` Paolo Minazzi
2010-04-27 8:16 ` Jens Axboe
2010-04-27 11:29 ` Jörn Engel
2010-04-27 11:33 ` Jens Axboe
2010-04-27 9:01 ` Paolo Minazzi
2010-04-27 9:16 ` Jens Axboe
2010-04-27 9:26 ` Paolo Minazzi
2010-04-27 9:29 ` Jens Axboe
2010-04-27 9:36 ` Paolo Minazzi
2010-04-27 11:17 ` Jörn Engel
2010-04-27 11:31 ` Paolo Minazzi
2010-04-27 11:40 ` Jörn Engel
2010-04-27 11:48 ` [PATCH] [LogFS] Return -EINVAL if filesystem image doesn't match Jörn Engel
2010-04-27 12:53 ` Paolo Minazzi
2010-04-27 11:54 ` [PATCH 2/2] [MTD] Call bdi_init() and bdi_register() Paolo Minazzi
2010-04-27 12:05 ` Jörn Engel
2010-04-26 17:01 ` [PATCH 1/2] [MTD] Move mtd_bdi_*mappable to mtdcore.c Jens Axboe
2010-04-26 17:08 ` Jörn Engel
2010-04-26 17:10 ` Jens Axboe
2010-04-22 9:03 ` [PATCH] [MTD] Fix JFFS2 sync silent failure Jens Axboe
2010-04-22 10:39 ` Jens Axboe
2010-04-22 10:58 ` David Woodhouse
2010-04-22 11:05 ` Jens Axboe
2010-04-22 11:55 ` Jörn Engel
2010-04-22 12:08 ` Jens Axboe
2010-04-22 12:17 ` Jörn Engel
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