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From: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
To: Mikulas Patocka <mpatocka@redhat.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [PATCH] deadlock when swapping to FAT
References: <Pine.LNX.4.64.0903120819010.26206@hs20-bc2-1.build.redhat.com>
	<87zlfqohfn.fsf@devron.myhome.or.jp>
	<Pine.LNX.4.64.0903142153330.23664@hs20-bc2-1.build.redhat.com>
Date: Sun, 15 Mar 2009 12:22:57 +0900
In-Reply-To: <Pine.LNX.4.64.0903142153330.23664@hs20-bc2-1.build.redhat.com>
	(Mikulas Patocka's message of "Sat, 14 Mar 2009 21:54:38 -0400 (EDT)")
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Mikulas Patocka <mpatocka@redhat.com> writes:

> Note that the same race condition is happening in all the other 
> filesystems. Maybe move that i_alloc_sem up to ->bmap method caller?

It can be. However, I guess locking strategy would be per
filesystems. Because the fs may be using i_alloc_sem in get_block
already.

Thanks.
-- 
OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>