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From: Matthew Bobrowski <mbobrowski@mbobrowski.org>
To: linux-ext4@vger.kernel.org
Cc: linux-fsdevel@vger.kernel.org, jack@suse.cz, tytso@mit.edu,
	riteshh@linux.ibm.com
Subject: [PATCH 0/5] ext4: direct IO via iomap infrastructure
Date: Mon, 12 Aug 2019 22:52:19 +1000
Message-ID: <cover.1565609891.git.mbobrowski@mbobrowski.org> (raw)

This patch series converts the ext4 direct IO code paths to make use of the
iomap infrastructure and removes the old buffer_head direct-io based
implementation. The result is that ext4 is converted to the newer framework
and that it may _possibly_ gain a performance boost for O_SYNC | O_DIRECT IO.

These changes have been tested using xfstests in both DAX and non-DAX modes
using various configurations i.e. 4k, dioread_nolock, dax.

Matthew Bobrowski (5):
  ext4: introduce direct IO read code path using iomap infrastructure
  ext4: move inode extension/truncate code out from ext4_iomap_end()
  iomap: modify ->end_io() calling convention
  ext4: introduce direct IO write code path using iomap infrastructure
  ext4: clean up redundant buffer_head direct IO code

 fs/ext4/ext4.h        |   3 -
 fs/ext4/extents.c     |   8 +-
 fs/ext4/file.c        | 329 +++++++++++++++++++++++++++-------
 fs/ext4/inode.c       | 488 +++++---------------------------------------------
 fs/iomap/direct-io.c  |   9 +-
 fs/xfs/xfs_file.c     |  17 +-
 include/linux/iomap.h |   4 +-
 7 files changed, 322 insertions(+), 536 deletions(-)

-- 
2.16.4


-- 
Matthew Bobrowski

             reply index

Thread overview: 48+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-12 12:52 Matthew Bobrowski [this message]
2019-08-12 12:52 ` [PATCH 1/5] ext4: introduce direct IO read code path using " Matthew Bobrowski
2019-08-12 17:18   ` Christoph Hellwig
2019-08-12 20:17     ` Matthew Wilcox
2019-08-13 10:45       ` Matthew Bobrowski
2019-08-12 12:52 ` [PATCH 2/5] ext4: move inode extension/truncate code out from ext4_iomap_end() Matthew Bobrowski
2019-08-12 17:18   ` Christoph Hellwig
2019-08-13 10:46     ` Matthew Bobrowski
2019-08-28 19:59   ` Jan Kara
2019-08-28 21:54     ` Matthew Bobrowski
2019-08-29  8:18       ` Jan Kara
2019-08-12 12:53 ` [PATCH 3/5] iomap: modify ->end_io() calling convention Matthew Bobrowski
2019-08-12 17:18   ` Christoph Hellwig
2019-08-13 10:43     ` Matthew Bobrowski
2019-08-12 12:53 ` [PATCH 4/5] ext4: introduce direct IO write code path using iomap infrastructure Matthew Bobrowski
2019-08-12 17:04   ` RITESH HARJANI
2019-08-13 12:58     ` Matthew Bobrowski
2019-08-13 14:35       ` Darrick J. Wong
2019-08-14  9:51         ` Matthew Bobrowski
2019-08-12 17:34   ` Christoph Hellwig
2019-08-13 10:45     ` Matthew Bobrowski
2019-08-28 20:26   ` Jan Kara
2019-08-28 22:32     ` Dave Chinner
2019-08-29  8:03       ` Jan Kara
2019-08-29 11:47       ` Matthew Bobrowski
2019-08-29 11:45     ` Matthew Bobrowski
2019-08-29 12:38       ` Jan Kara
2019-08-12 12:53 ` [PATCH 5/5] ext4: clean up redundant buffer_head direct IO code Matthew Bobrowski
2019-08-12 17:31 ` [PATCH 0/5] ext4: direct IO via iomap infrastructure RITESH HARJANI
2019-08-13 11:10   ` Matthew Bobrowski
2019-08-13 12:27     ` RITESH HARJANI
2019-08-14  9:48       ` Matthew Bobrowski
2019-08-14 11:58         ` RITESH HARJANI
2019-08-21 13:14       ` Matthew Bobrowski
2019-08-22 12:00         ` Matthew Bobrowski
2019-08-22 14:11           ` Ritesh Harjani
2019-08-24  3:18             ` Matthew Bobrowski
2019-08-24  3:55               ` Darrick J. Wong
2019-08-24 23:04                 ` Christoph Hellwig
2019-08-27  9:52                   ` Matthew Bobrowski
2019-08-28 12:05                     ` Matthew Bobrowski
2019-08-28 14:27                       ` Theodore Y. Ts'o
2019-08-28 18:02                         ` Jan Kara
2019-08-29  6:36                           ` Christoph Hellwig
2019-08-29 11:20                             ` Matthew Bobrowski
2019-08-29 14:41                               ` Christoph Hellwig
2019-08-23 13:43           ` [RFC 1/1] ext4: PoC implementation of option-1 Ritesh Harjani
2019-08-23 13:49             ` Ritesh Harjani

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