From: Christoph Hellwig <hch@infradead.org>
To: Takao Indoh <indou.takao@soft.fujitsu.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [PATCH 4/4][diskdump] x86-64 support
Date: Sat, 4 Sep 2004 12:11:22 +0100 [thread overview]
Message-ID: <20040904121122.C14123@infradead.org> (raw)
In-Reply-To: <9AC48F3A62CFC4indou.takao@soft.fujitsu.com>; from indou.takao@soft.fujitsu.com on Tue, Aug 31, 2004 at 06:10:40PM +0900
On Tue, Aug 31, 2004 at 06:10:40PM +0900, Takao Indoh wrote:
> >a spin_trylock would be safe. hd can't be NULL.
>
> Could you explain to me why spin_is_locked is not safe?
it's inherently racy. Also it's always return 0 on UP systems which
makes it totally useless there.
next prev parent reply other threads:[~2004-09-04 11:12 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-08-28 9:43 [PATCH 0/4][diskdump] x86-64 support Takao Indoh
2004-08-28 9:44 ` [PATCH 1/4][diskdump] " Takao Indoh
2004-08-28 9:45 ` [PATCH 2/4][diskdump] " Takao Indoh
2004-08-28 10:21 ` Christoph Hellwig
2004-08-28 9:47 ` [PATCH 3/4][diskdump] " Takao Indoh
2004-08-28 9:48 ` [PATCH 4/4][diskdump] " Takao Indoh
2004-08-28 10:23 ` Christoph Hellwig
2004-08-31 9:10 ` Takao Indoh
2004-09-04 11:11 ` Christoph Hellwig [this message]
2004-09-04 22:31 ` Lee Revell
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