From: Mark Tinguely <tinguely@sgi.com>
To: Shaohua Li <shli@kernel.org>
Cc: xfs@oss.sgi.com
Subject: Re: [RFC]xfs: using GFP_NOFS for blkdev_issue_flush
Date: Tue, 17 Apr 2012 13:42:03 -0500 [thread overview]
Message-ID: <4F8DB97B.30100@sgi.com> (raw)
In-Reply-To: <4F8BC30D.5040601@kernel.org>
On 04/16/12 01:58, Shaohua Li wrote:
> flush request is issued in transaction commit code path usually, so
> looks using
> GFP_KERNEL to allocate memory for flush request bio falls into the classic
> deadlock issue (memory reclaim recursion). Use GFP_NOFS to avoid recursion
> from reclaim context. Per Dave Chinner, there is only blkdev_issue_flush
> might
> be buggy here. But using GFP_NOFS by default for all calls should not
> matter.
>
> Signed-off-by: Shaohua Li <shli@fusionio.com>
> ---
Looks good.
Reviewed-by: Mark Tinguely <tinguely@sgi.com>
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next prev parent reply other threads:[~2012-04-17 18:42 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-16 6:49 [RFC]xfs: using GFP_NOFS for blkdev_issue_flush Shaohua Li
2012-04-16 6:58 ` Shaohua Li
2012-04-17 18:42 ` Mark Tinguely [this message]
2012-04-18 1:37 ` Dave Chinner
2012-04-24 13:23 ` Shaohua Li
2012-04-25 0:25 ` Dave Chinner
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