From: Christoph Hellwig <hch@infradead.org>
To: Matthew Wilcox <matthew@wil.cx>
Cc: linux-scsi@vger.kernel.org
Subject: Re: [RFC] uas host lock removal conversion
Date: Thu, 16 Dec 2010 05:44:58 -0500 [thread overview]
Message-ID: <20101216104458.GA5919@infradead.org> (raw)
In-Reply-To: <20101216050257.GC1263@parisc-linux.org>
On Wed, Dec 15, 2010 at 10:02:57PM -0700, Matthew Wilcox wrote:
>
> I thought I'd take a crack at removing the host lock from uas. I think
> I can now switch to using GFP_NOIO (since interrupts are enabled by
> scsi_request_fn()), and I have to use _irq spinlocks to protect the list
> that is modified from interrupt context (same reason :-).
->qeuecommand can be called from software interrupt context, so you'll
need to stick to GFP_ATOMIC.
next prev parent reply other threads:[~2010-12-16 10:44 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-12-16 5:02 [RFC] uas host lock removal conversion Matthew Wilcox
2010-12-16 6:15 ` Land iscsi iser performance patches to upstream Zhiqi Tao
2011-01-03 22:32 ` Mike Christie
2011-01-04 7:17 ` Or Gerlitz
2011-01-04 7:22 ` Or Gerlitz
2010-12-16 10:44 ` Christoph Hellwig [this message]
2010-12-16 14:00 ` [RFC] uas host lock removal conversion Matthew Wilcox
2010-12-16 14:04 ` James Bottomley
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