From: Kevin Wolf <kwolf@redhat.com>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: ming.lei@canonical.com, pl@kamp.de, qemu-devel@nongnu.org,
stefanha@redhat.com
Subject: Re: [Qemu-devel] [PATCH v2 0/5] linux-aio: rewrite and simplify queuing code
Date: Thu, 11 Dec 2014 15:49:12 +0100 [thread overview]
Message-ID: <20141211144912.GE23351@noname.redhat.com> (raw)
In-Reply-To: <1418305950-30924-1-git-send-email-pbonzini@redhat.com>
Am 11.12.2014 um 14:52 hat Paolo Bonzini geschrieben:
> This series rewrites the io_submit code to avoid having to
> synchronize the iocbs in two places (qemu_laiocb and LaioQueue).
> Instead, the queue of pending I/O requests is kept in a list.
>
> This fixes the problems with io_submit doing partial submissions
> or failing with EAGAIN, without complicating the code. The bug is
> shown by "qemu-img bench -n -t none -s 65536 -d 1024 -c 100000"
> pretty much instantly.
>
> Paolo
>
> v1->v2: add patch 4, and fix QSIMPLEQ_SPLIT_AFTER
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
next prev parent reply other threads:[~2014-12-11 14:49 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-12-11 13:52 [Qemu-devel] [PATCH v2 0/5] linux-aio: rewrite and simplify queuing code Paolo Bonzini
2014-12-11 13:52 ` [Qemu-devel] [PATCH v2 1/5] linux-aio: queue requests that cannot be submitted Paolo Bonzini
2014-12-16 11:07 ` Kevin Wolf
2014-12-16 11:28 ` Paolo Bonzini
2014-12-16 13:10 ` Kevin Wolf
2014-12-16 18:28 ` Paolo Bonzini
2014-12-16 20:26 ` Paolo Bonzini
2014-12-17 12:34 ` Paolo Bonzini
2014-12-17 15:03 ` Paolo Bonzini
2014-12-11 13:52 ` [Qemu-devel] [PATCH v2 2/5] linux-aio: track whether the queue is blocked Paolo Bonzini
2014-12-11 13:52 ` [Qemu-devel] [PATCH v2 3/5] linux-aio: rename LaioQueue idx field to "n" Paolo Bonzini
2014-12-11 13:52 ` [Qemu-devel] [PATCH v2 4/5] linux-aio: drop return code from laio_io_unplug and ioq_submit Paolo Bonzini
2014-12-11 13:52 ` [Qemu-devel] [PATCH v2 5/5] linux-aio: simplify removal of completed iocbs from the list Paolo Bonzini
2014-12-11 14:49 ` Kevin Wolf [this message]
2014-12-12 17:07 ` [Qemu-devel] [PATCH v2 0/5] linux-aio: rewrite and simplify queuing code Stefan Hajnoczi
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