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authorJoe Thornber <ejt@redhat.com>2012-07-27 18:08:14 +0400
committerAlasdair G Kergon <agk@redhat.com>2012-07-27 18:08:14 +0400
commit40db5a537655aa0b17a82a4b5596f8d27400edd8 (patch)
tree5e9d59aac1c42d949b47c962d4ee24b4287d23fa /drivers/md/dm-thin-metadata.h
parent66b1edc05e3f4c1227f51e40f2ead3e973c00cb0 (diff)
downloadlinux-40db5a537655aa0b17a82a4b5596f8d27400edd8.tar.xz
dm thin metadata: add dm_thin_changed_this_transaction
Introduce dm_thin_changed_this_transaction to dm-thin-metadata to publish a useful bit of information we're already tracking. This will help dm thin decide when to commit. Signed-off-by: Joe Thornber <ejt@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Diffstat (limited to 'drivers/md/dm-thin-metadata.h')
-rw-r--r--drivers/md/dm-thin-metadata.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/md/dm-thin-metadata.h b/drivers/md/dm-thin-metadata.h
index 7e6656c49bd5..1632fec1660d 100644
--- a/drivers/md/dm-thin-metadata.h
+++ b/drivers/md/dm-thin-metadata.h
@@ -148,6 +148,8 @@ int dm_thin_remove_block(struct dm_thin_device *td, dm_block_t block);
/*
* Queries.
*/
+bool dm_thin_changed_this_transaction(struct dm_thin_device *td);
+
int dm_thin_get_highest_mapped_block(struct dm_thin_device *td,
dm_block_t *highest_mapped);