From 12ba58af46e5973822f1cfaaf5f29a2a17a523bf Mon Sep 17 00:00:00 2001 From: Joe Thornber Date: Fri, 27 Jul 2012 15:08:15 +0100 Subject: dm thin metadata: introduce dm_pool_metadata_set_read_only Introduce dm_pool_metadata_set_read_only to put the underlying block manager into read-only mode. Signed-off-by: Joe Thornber Signed-off-by: Mike Snitzer Signed-off-by: Alasdair G Kergon --- drivers/md/dm-thin-metadata.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'drivers/md/dm-thin-metadata.h') diff --git a/drivers/md/dm-thin-metadata.h b/drivers/md/dm-thin-metadata.h index 1632fec1660d..2bbe622f299d 100644 --- a/drivers/md/dm-thin-metadata.h +++ b/drivers/md/dm-thin-metadata.h @@ -174,6 +174,12 @@ int dm_pool_get_data_dev_size(struct dm_pool_metadata *pmd, dm_block_t *result); */ int dm_pool_resize_data_dev(struct dm_pool_metadata *pmd, dm_block_t new_size); +/* + * Flicks the underlying block manager into read only mode, so you know + * that nothing is changing. + */ +void dm_pool_metadata_read_only(struct dm_pool_metadata *pmd); + /*----------------------------------------------------------------*/ #endif -- cgit v1.2.3