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From: Christoph Hellwig <hch@lst.de>
To: viro@zeniv.linux.org.uk
Cc: Avi Kivity <avi@scylladb.com>,
	linux-aio@kvack.org, linux-fsdevel@vger.kernel.org,
	linux-api@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: io_pgetevents & aio fsync V4
Date: Wed,  2 May 2018 23:14:41 +0200	[thread overview]
Message-ID: <20180502211448.18276-1-hch@lst.de> (raw)

Hi all,

this patch adds workqueue based fsync offload.  Version of this
patch have been floating around for a couple years, but we now
have a user with seastar used by ScyllaDB (who sponsored this
work) that really wants this in addition to the aio poll support.
More details are in the patch itself.

Because the iocb types have been defined sine day one (and probably
were supported by RHEL3) libaio already supports these calls as-is.

This also pulls in the aio cleanups and io_pgetevents support previously
submitted and review as part of the aio poll series.  The aio poll
series will be resubmitted on top of this series

A git tree is available here:

    git://git.infradead.org/users/hch/vfs.git aio-fsync.4

Gitweb:

    http://git.infradead.org/users/hch/vfs.git/shortlog/refs/heads/aio-fsync.4

Changes since V3:
 - rebased on top of 4.17-rc3
 - improved/added a few comments

Changes since V2:
 - don't introduce a use after free for lockdep sb release tracking
 - set up list for cancellation before I/O submission

Changes since V1:
 - remove a BUG_ON_ONE(is_sync_kiocb(kiocb));
 - moved cancellation patches to the poll series
 - improve a list_empty check

             reply	other threads:[~2018-05-02 21:14 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-02 21:14 Christoph Hellwig [this message]
2018-05-02 21:14 ` [PATCH 1/7] aio: don't print the page size at boot time Christoph Hellwig
2018-05-02 21:14 ` [PATCH 2/7] aio: remove an outdated BUG_ON and comment in aio_complete Christoph Hellwig
2018-05-02 21:14 ` [PATCH 3/7] aio: sanitize ki_list handling Christoph Hellwig
2018-05-02 21:14 ` [PATCH 4/7] aio: remove the extra get_file/fput pair in io_submit_one Christoph Hellwig
2018-05-02 22:04   ` Darrick J. Wong
2018-05-02 21:14 ` [PATCH 5/7] aio: refactor read/write iocb setup Christoph Hellwig
2018-05-02 21:14 ` [PATCH 6/7] aio: implement IOCB_CMD_FSYNC and IOCB_CMD_FDSYNC Christoph Hellwig
2018-05-02 21:14 ` [PATCH 7/7] aio: implement io_pgetevents Christoph Hellwig
2018-05-18  8:28   ` James Hogan
2018-05-18  8:57     ` Christoph Hellwig
2018-07-04 14:21   ` Adrian Reber
2018-07-08 20:44     ` Christoph Hellwig
2018-07-09 17:20       ` Stephan Müller
2018-07-09 19:21       ` Stephan Müller
2018-07-10 12:51         ` Christoph Hellwig
2018-07-10  5:11       ` Andrei Vagin
2018-05-10 18:05 ` io_pgetevents & aio fsync V4 Al Viro

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