diff options
Diffstat (limited to 'drivers/md/dm-thin-metadata.h')
| -rw-r--r-- | drivers/md/dm-thin-metadata.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/md/dm-thin-metadata.h b/drivers/md/dm-thin-metadata.h index 2bbe622f299d..0cecc3702885 100644 --- a/drivers/md/dm-thin-metadata.h +++ b/drivers/md/dm-thin-metadata.h @@ -80,6 +80,16 @@ int dm_pool_delete_thin_device(struct dm_pool_metadata *pmd, int dm_pool_commit_metadata(struct dm_pool_metadata *pmd); /* + * Discards all uncommitted changes. Rereads the superblock, rolling back + * to the last good transaction. Thin devices remain open. + * dm_thin_aborted_changes() tells you if they had uncommitted changes. + * + * If this call fails it's only useful to call dm_pool_metadata_close(). + * All other methods will fail with -EINVAL. + */ +int dm_pool_abort_metadata(struct dm_pool_metadata *pmd); + +/* * Set/get userspace transaction id. */ int dm_pool_set_metadata_transaction_id(struct dm_pool_metadata *pmd, @@ -150,6 +160,8 @@ int dm_thin_remove_block(struct dm_thin_device *td, dm_block_t block); */ bool dm_thin_changed_this_transaction(struct dm_thin_device *td); +bool dm_thin_aborted_changes(struct dm_thin_device *td); + int dm_thin_get_highest_mapped_block(struct dm_thin_device *td, dm_block_t *highest_mapped); |