From: "Darrick J. Wong" <darrick.wong@oracle.com>
To: darrick.wong@oracle.com
Cc: Christoph Hellwig <hch@lst.de>, Brian Foster <bfoster@redhat.com>,
Christoph Hellwig <hch@infradead.org>,
linux-xfs@vger.kernel.org, hch@infradead.org, bfoster@redhat.com
Subject: [PATCH v4 0/4] xfs: fix stale disk exposure after crash
Date: Sat, 23 May 2020 09:49:31 -0700 [thread overview]
Message-ID: <159025257178.493629.12621189512718182426.stgit@magnolia> (raw)
Hi all,
This set of patches try to shrink the window during which a crash during
writeback can expose stale disk contents. The first patch causes
delalloc reservations to be converted to unwritten extents for any
writeback that's going on within EOF. The second patch fixes a minor
error encountered during writeback; and the third patch fixes
speculative preallocation to work when the EOF block could be unwritten.
v3 puts the extent tree walk into the dynamic prealloc sizing function.
v4 fixes a bug with walking the extent map backwards.
If you're going to start using this mess, you probably ought to just
pull from my git trees, which are linked below.
This is an extraordinary way to destroy everything. Enjoy!
Comments and questions are, as always, welcome.
--D
kernel git tree:
https://git.kernel.org/cgit/linux/kernel/git/djwong/xfs-linux.git/log/?h=stale-exposure
xfsprogs git tree:
https://git.kernel.org/cgit/linux/kernel/git/djwong/xfsprogs-dev.git/log/?h=stale-exposure
---
fs/xfs/libxfs/xfs_bmap.c | 29 +++++++-----
fs/xfs/xfs_iomap.c | 107 +++++++++++++++++++++++-----------------------
2 files changed, 71 insertions(+), 65 deletions(-)
next reply other threads:[~2020-05-23 16:50 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-23 16:49 Darrick J. Wong [this message]
2020-05-23 16:49 ` [PATCH 1/4] xfs: don't fail unwritten extent conversion on writeback due to edquot Darrick J. Wong
2020-05-23 16:49 ` [PATCH 2/4] xfs: measure all contiguous previous extents for prealloc size Darrick J. Wong
2020-05-24 9:14 ` Christoph Hellwig
2020-05-24 17:16 ` Darrick J. Wong
2020-05-24 17:16 ` [PATCH v2 " Darrick J. Wong
2020-05-25 13:28 ` Christoph Hellwig
2020-05-26 13:46 ` Brian Foster
2020-05-23 16:49 ` [PATCH 3/4] xfs: refactor xfs_iomap_prealloc_size Darrick J. Wong
2020-05-24 17:17 ` [PATCH v2 " Darrick J. Wong
2020-05-26 13:46 ` Brian Foster
2020-05-23 16:49 ` [PATCH 4/4] xfs: force writes to delalloc regions to unwritten Darrick J. Wong
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