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From: Kevin Wolf <kwolf@redhat.com>
To: "Denis V. Lunev" <den@openvz.org>
Cc: Fam Zheng <famz@redhat.com>, Peter Lieven <pl@kamp.de>,
	qemu-devel@nongnu.org, Stefan Hajnoczi <stefanha@redhat.com>,
	Max Reitz <mreitz@redhat.com>
Subject: Re: [Qemu-devel] [PATCH v6 0/7] eliminate data write in bdrv_write_zeroes on Linux in raw-posix.c
Date: Mon, 2 Feb 2015 14:26:23 +0100	[thread overview]
Message-ID: <20150202132623.GD9478@noname.redhat.com> (raw)
In-Reply-To: <1422607337-25335-1-git-send-email-den@openvz.org>

Am 30.01.2015 um 09:42 hat Denis V. Lunev geschrieben:
> I have performed several tests with non-aligned fallocate calls and
> in all cases (with non-aligned fallocates) Linux performs fine, i.e.
> areas are zeroed correctly. Checks were made on
> Linux 3.16.0-28-generic #38-Ubuntu SMP
> 
> This should seriously increase performance of bdrv_write_zeroes

Thanks, applied all to the block branch.

Note that I'm hoping to remove patch 7/7 from the queue again if we come
to the conclusion that changing the global default instead makes more
sense.

Kevin

      parent reply	other threads:[~2015-02-02 13:26 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-01-30  8:42 [Qemu-devel] [PATCH v6 0/7] eliminate data write in bdrv_write_zeroes on Linux in raw-posix.c Denis V. Lunev
2015-01-30  8:42 ` [Qemu-devel] [PATCH 1/7] block/raw-posix: create translate_err helper to merge errno values Denis V. Lunev
2015-01-30  8:44   ` Peter Lieven
2015-01-30  8:42 ` [Qemu-devel] [PATCH 2/7] block/raw-posix: create do_fallocate helper Denis V. Lunev
2015-01-30  8:47   ` Peter Lieven
2015-01-30  8:49     ` Denis V. Lunev
2015-01-30  8:50       ` Peter Lieven
2015-01-30  8:42 ` [Qemu-devel] [PATCH 3/7] block/raw-posix: refactor handle_aiocb_write_zeroes a bit Denis V. Lunev
2015-01-30  8:42 ` [Qemu-devel] [PATCH 4/7] block: use fallocate(FALLOC_FL_ZERO_RANGE) in handle_aiocb_write_zeroes Denis V. Lunev
2015-01-30  8:42 ` [Qemu-devel] [PATCH 5/7] block/raw-posix: call plain fallocate " Denis V. Lunev
2015-01-30 14:58   ` Max Reitz
2015-01-30 15:41     ` Denis V. Lunev
2015-01-30 15:42       ` Max Reitz
2015-01-30 15:53         ` Denis V. Lunev
2015-01-30  8:42 ` [Qemu-devel] [PATCH 6/7] block: use fallocate(FALLOC_FL_PUNCH_HOLE) & fallocate(0) to write zeroes Denis V. Lunev
2015-01-30 15:02   ` Max Reitz
2015-01-30  8:42 ` [Qemu-devel] [PATCH 7/7] block/raw-posix: set max_write_zeroes to INT_MAX for regular files Denis V. Lunev
2015-02-02 13:23   ` Kevin Wolf
2015-02-02 13:55     ` Peter Lieven
2015-02-02 14:04       ` Kevin Wolf
2015-02-02 14:12         ` Peter Lieven
2015-02-02 14:16           ` Kevin Wolf
2015-02-02 14:20             ` Peter Lieven
2015-02-02 14:38               ` Denis V. Lunev
2015-02-02 14:49               ` Kevin Wolf
2015-02-02 15:30                 ` Denis V. Lunev
2015-02-02 13:26 ` Kevin Wolf [this message]

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