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| author | Nikos Tsironis <ntsironis@arrikto.com> | 2019-12-04 17:07:41 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-12-21 13:05:01 +0300 |
| commit | d2688d36ced2d82b7a2cb24e85b511e969ebfe20 (patch) | |
| tree | fb38bfc60e28d9eaeb2c8d57aeb3f71c1892e70b /drivers/md/dm-thin-metadata.h | |
| parent | a802c5c9f4e6b47b85ba27d36f8c1fd3386b19f2 (diff) | |
| download | linux-d2688d36ced2d82b7a2cb24e85b511e969ebfe20.tar.xz | |
dm thin metadata: Add support for a pre-commit callback
commit ecda7c0280e6b3398459dc589b9a41c1adb45529 upstream.
Add support for one pre-commit callback which is run right before the
metadata are committed.
This allows the thin provisioning target to run a callback before the
metadata are committed and is required by the next commit.
Cc: stable@vger.kernel.org
Signed-off-by: Nikos Tsironis <ntsironis@arrikto.com>
Acked-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/md/dm-thin-metadata.h')
| -rw-r--r-- | drivers/md/dm-thin-metadata.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/md/dm-thin-metadata.h b/drivers/md/dm-thin-metadata.h index f6be0d733c20..7ef56bd2a7e3 100644 --- a/drivers/md/dm-thin-metadata.h +++ b/drivers/md/dm-thin-metadata.h @@ -230,6 +230,13 @@ bool dm_pool_metadata_needs_check(struct dm_pool_metadata *pmd); */ void dm_pool_issue_prefetches(struct dm_pool_metadata *pmd); +/* Pre-commit callback */ +typedef int (*dm_pool_pre_commit_fn)(void *context); + +void dm_pool_register_pre_commit_callback(struct dm_pool_metadata *pmd, + dm_pool_pre_commit_fn fn, + void *context); + /*----------------------------------------------------------------*/ #endif |