Messages in this thread | | | Date | Thu, 6 Aug 2020 08:07:43 -0700 | From | "Darrick J. Wong" <> | Subject | [GIT PULL v2] iomap: new code for 5.9-rc1 |
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Hi Linus,
Please pull these new changes to the iomap code for 5.9. The most notable changes are:
1) iomap no longer invalidate the page cache when performing a direct read, since doing so is unnecessary and the old directio code doesn't do that either.
2) iomap embraced the use of returning ENOTBLK from a direct write to trigger falling back to a buffered write since ext4 already did this and btrfs wants it for their port.
3) iomap falls back to buffered writes if we're doing a direct write and the page cache invalidation after the flush fails; this was necessary to handle a corner case in the btrfs port.
4) Remove email virus scanner detritus that was accidentally included in yesterday's pull request. Clearly I need(ed) to update my git branch checker scripts. :(
The branch merges cleanly with your HEAD branch as of a few minutes ago. Please let me know if there are any strange problems.
--D
The following changes since commit dcb7fd82c75ee2d6e6f9d8cc71c52519ed52e258:
Linux 5.8-rc4 (2020-07-05 16:20:22 -0700)
are available in the Git repository at:
git://git.kernel.org/pub/scm/fs/xfs/xfs-linux.git tags/iomap-5.9-merge-5
for you to fetch changes up to 60263d5889e6dc5987dc51b801be4955ff2e4aa7:
iomap: fall back to buffered writes for invalidation failures (2020-08-05 09:24:16 -0700)
---------------------------------------------------------------- New code for 5.9: - Make sure we call ->iomap_end with a failure code if ->iomap_begin failed in any way; some filesystems need to try to undo things. - Don't invalidate the page cache during direct reads since we already sync'd the cache with disk. - Make direct writes fall back to the page cache if the pre-write cache invalidation fails. This avoids a cache coherency problem. - Fix some idiotic virus scanner warning bs in the previous tag.
---------------------------------------------------------------- Andreas Gruenbacher (1): iomap: Make sure iomap_end is called after iomap_begin
Christoph Hellwig (2): xfs: use ENOTBLK for direct I/O to buffered I/O fallback iomap: fall back to buffered writes for invalidation failures
Dave Chinner (1): iomap: Only invalidate page cache pages on direct IO writes
fs/ext4/file.c | 2 ++ fs/gfs2/file.c | 3 ++- fs/iomap/apply.c | 13 +++++++++---- fs/iomap/direct-io.c | 37 +++++++++++++++++++++---------------- fs/iomap/trace.h | 1 + fs/xfs/xfs_file.c | 8 ++++---- fs/zonefs/super.c | 7 +++++-- 7 files changed, 44 insertions(+), 27 deletions(-)
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