From: Christoph Hellwig <hch@lst.de>
To: linux-xfs@vger.kernel.org
Subject: COW improvements and always_cow support V3
Date: Mon, 3 Dec 2018 17:24:52 -0500 [thread overview]
Message-ID: <20181203222503.30649-1-hch@lst.de> (raw)
Hi all,
this series adds the always_cow mode support after improving our COW
write support a little bit first.
The always_cow mode stresses the COW path a lot, but with a few xfstests
fixups it generall looks good, except for a few tests that complain about
fragmentation, which is rather inherent in this mode, and xfs/326 which
inserts error tags into the COW path not getting the expected result.
Changes since v2:
- add a patch to remove xfs_trim_extent_eof
- add a patch to remove the separate io_type and rely on existing state
in the writeback path
- rework the truncate race handling in the writeback path a little more
Changes since v1:
- make delalloc and unwritten extent conversions simpler and more robust
- add a few additional cleanups
- support all fallocate modes but actual preallocation
- rebase on top of a fix from Brian (which is included as first patch
to make the patch set more usable)
next reply other threads:[~2018-12-03 22:25 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-03 22:24 Christoph Hellwig [this message]
2018-12-03 22:24 ` [PATCH 01/11] xfs: remove xfs_trim_extent_eof Christoph Hellwig
2018-12-18 21:45 ` Darrick J. Wong
2018-12-03 22:24 ` [PATCH 02/11] xfs: remove the io_type field from the writeback context and ioend Christoph Hellwig
2018-12-18 21:45 ` Darrick J. Wong
2018-12-03 22:24 ` [PATCH 03/11] xfs: remove the s_maxbytes checks in xfs_map_blocks Christoph Hellwig
2018-12-18 22:31 ` Darrick J. Wong
2018-12-03 22:24 ` [PATCH 04/11] xfs: rework the truncate race handling in the writeback path Christoph Hellwig
2018-12-18 23:03 ` Darrick J. Wong
2018-12-19 19:32 ` Christoph Hellwig
2018-12-03 22:24 ` [PATCH 05/11] xfs: make xfs_bmbt_to_iomap more useful Christoph Hellwig
2018-12-18 21:46 ` Darrick J. Wong
2018-12-03 22:24 ` [PATCH 06/11] xfs: don't use delalloc extents for COW on files with extsize hints Christoph Hellwig
2018-12-18 21:44 ` Darrick J. Wong
2018-12-19 19:29 ` Christoph Hellwig
2018-12-19 19:32 ` Darrick J. Wong
2018-12-03 22:24 ` [PATCH 07/11] xfs: also truncate holes covered by COW blocks Christoph Hellwig
2018-12-18 23:39 ` Darrick J. Wong
2018-12-03 22:25 ` [PATCH 08/11] xfs: merge COW handling into xfs_file_iomap_begin_delay Christoph Hellwig
2018-12-18 23:36 ` Darrick J. Wong
2018-12-19 19:38 ` Christoph Hellwig
2018-12-19 20:20 ` Darrick J. Wong
2018-12-03 22:25 ` [PATCH 09/11] xfs: report IOMAP_F_SHARED from xfs_file_iomap_begin_delay Christoph Hellwig
2018-12-18 23:38 ` Darrick J. Wong
2018-12-19 19:39 ` Christoph Hellwig
2018-12-03 22:25 ` [PATCH 10/11] xfs: make COW fork unwritten extent conversions more robust Christoph Hellwig
2018-12-18 22:22 ` Darrick J. Wong
2018-12-19 19:30 ` Christoph Hellwig
2018-12-03 22:25 ` [PATCH 11/11] xfs: introduce an always_cow mode Christoph Hellwig
2018-12-18 23:24 ` Darrick J. Wong
2018-12-19 19:37 ` Christoph Hellwig
2018-12-19 22:43 ` Dave Chinner
2018-12-20 7:07 ` Christoph Hellwig
2018-12-20 21:03 ` Dave Chinner
2018-12-21 6:27 ` Christoph Hellwig
2018-12-06 1:05 ` COW improvements and always_cow support V3 Darrick J. Wong
2018-12-06 4:16 ` Christoph Hellwig
2018-12-06 16:32 ` Darrick J. Wong
2018-12-06 20:09 ` Christoph Hellwig
2018-12-17 17:59 ` Darrick J. Wong
2018-12-18 18:05 ` Christoph Hellwig
2018-12-19 0:44 ` Darrick J. Wong
2018-12-20 7:09 ` Christoph Hellwig
2018-12-20 22:09 ` Darrick J. Wong
-- strict thread matches above, loose matches on Subject: below --
2018-12-03 16:21 Christoph Hellwig
2018-12-03 17:22 ` Christoph Hellwig
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