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| author | Nikos Tsironis <ntsironis@arrikto.com> | 2019-12-04 17:06:52 +0300 |
|---|---|---|
| committer | Mike Snitzer <snitzer@redhat.com> | 2019-12-05 23:27:53 +0300 |
| commit | e6a505f3f9fae572fb3ab3bc486e755ac9cef32c (patch) | |
| tree | 8b2f6f9a3970094f008743b3883f9480cc45589b /mm/memblock.c | |
| parent | 474e559567fa631dea8fb8407ab1b6090c903755 (diff) | |
| download | linux-e6a505f3f9fae572fb3ab3bc486e755ac9cef32c.tar.xz | |
dm clone metadata: Track exact changes per transaction
Extend struct dirty_map with a second bitmap which tracks the exact
regions that were hydrated during the current metadata transaction.
Moreover, fix __flush_dmap() to only commit the metadata of the regions
that were hydrated during the current transaction.
This is required by the following commits to fix a data corruption bug.
Fixes: 7431b7835f55 ("dm: add clone target")
Cc: stable@vger.kernel.org # v5.4+
Signed-off-by: Nikos Tsironis <ntsironis@arrikto.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'mm/memblock.c')
0 files changed, 0 insertions, 0 deletions