From: Christoph Hellwig <hch@lst.de>
To: "Nicholas A. Bellinger" <nab@linux-iscsi.org>
Cc: Kevin Wolf <kwolf@redhat.com>, kvm-devel <kvm@vger.kernel.org>,
qemu-devel <qemu-devel@nongnu.org>,
Hannes Reinecke <hare@suse.de>, Christoph Hellwig <hch@lst.de>,
Gerd Hoffmann <kraxel@redhat.com>
Subject: [Qemu-devel] Re: [PATCH 2/2] [block]: Skip refresh_total_sectors() for scsi-generic devices
Date: Sun, 16 May 2010 15:30:22 +0200 [thread overview]
Message-ID: <20100516133022.GB27075@lst.de> (raw)
In-Reply-To: <1273930259-12694-1-git-send-email-nab@linux-iscsi.org>
On Sat, May 15, 2010 at 06:30:59AM -0700, Nicholas A. Bellinger wrote:
> From: Nicholas Bellinger <nab@linux-iscsi.org>
>
> This patch adds a BlockDriverState->sg check in block.c:bdrv_common_open()
> to skip the new refresh_total_sectors() call once we know we are working with
> a scsi-generic device.
>
> We go ahead and skip this call for scsi-generic devices because
> block/raw-posix.c:raw_getlength() -> lseek() will return -ESPIPE.
How about moving that check into refresh_total_sectors?
next prev parent reply other threads:[~2010-05-16 13:30 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-15 13:30 [Qemu-devel] [PATCH 2/2] [block]: Skip refresh_total_sectors() for scsi-generic devices Nicholas A. Bellinger
2010-05-16 13:30 ` Christoph Hellwig [this message]
2010-05-17 1:53 ` [Qemu-devel] " Nicholas A. Bellinger
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