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From: | Fabrice Bellard |
Subject: | Re: [Qemu-devel] [4367] Align file accesses with cache=off (Kevin Wolf, Laurent Vivier) |
Date: | Wed, 07 May 2008 00:17:41 +0200 |
User-agent: | Thunderbird 1.5.0.9 (X11/20070212) |
A note: in order to avoid uncontrolled recursions, it is better to call the read/write AIO callback outside the aio_read/write (see bdrv_aio_read_em). Personally I would not trust the OS to correctly handle the mix of O_DIRECT and buffered operations, especially if the corresponding file regions intersect ! Fabrice. Blue Swirl wrote: > Revision: 4367 > http://svn.sv.gnu.org/viewvc/?view=rev&root=qemu&revision=4367 > Author: blueswir1 > Date: 2008-05-06 17:26:59 +0000 (Tue, 06 May 2008) > > Log Message: > ----------- > Align file accesses with cache=off (Kevin Wolf, Laurent Vivier) > > Modified Paths: > -------------- > trunk/block-raw-posix.c > [...]
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