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| author | Shiyang Ruan <ruansy.fnst@fujitsu.com> | 2022-12-01 18:28:52 +0300 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2022-12-12 05:12:16 +0300 |
| commit | f80e1668888f34c0764822e74953c997daf2ccdb (patch) | |
| tree | 736491b9ee73e4603e4795e716927e572b4961e6 /lib | |
| parent | 169004265860327182ecf92297b25b6271e81e96 (diff) | |
| download | linux-f80e1668888f34c0764822e74953c997daf2ccdb.tar.xz | |
fsdax: invalidate pages when CoW
CoW changes the share state of a dax page, but the share count of the page
isn't updated. The next time access this page, it should have been a
newly accessed, but old association exists. So, we need to clear the
share state when CoW happens, in both dax_iomap_rw() and dax_zero_iter().
Link: https://lkml.kernel.org/r/1669908538-55-3-git-send-email-ruansy.fnst@fujitsu.com
Signed-off-by: Shiyang Ruan <ruansy.fnst@fujitsu.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Cc: Alistair Popple <apopple@nvidia.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Dave Chinner <david@fromorbit.com>
Cc: Jason Gunthorpe <jgg@nvidia.com>
Cc: John Hubbard <jhubbard@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'lib')
0 files changed, 0 insertions, 0 deletions