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authorMike Snitzer <snitzer@redhat.com>2015-04-23 15:06:27 -0400
committerMike Snitzer <snitzer@redhat.com>2015-05-29 14:18:59 -0400
commit49f154c7327139c275c9392b5fd69cad82f106bc (patch)
treeaaab9fc27b1d91ccb31ba148e0cd5fe8bd942ef1 /drivers/md/persistent-data
parentf8ae75253e4174089ffe3046715c679183f1919f (diff)
downloadlinux-49f154c7327139c275c9392b5fd69cad82f106bc.tar.bz2
dm thin metadata: remove in-core 'read_only' flag
Leverage the block manager's read_only flag instead of duplicating it; access with new dm_bm_is_read_only() method. Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'drivers/md/persistent-data')
-rw-r--r--drivers/md/persistent-data/dm-block-manager.c6
-rw-r--r--drivers/md/persistent-data/dm-block-manager.h1
2 files changed, 7 insertions, 0 deletions
diff --git a/drivers/md/persistent-data/dm-block-manager.c b/drivers/md/persistent-data/dm-block-manager.c
index 087411c95ffc..4d6c9b689eaa 100644
--- a/drivers/md/persistent-data/dm-block-manager.c
+++ b/drivers/md/persistent-data/dm-block-manager.c
@@ -609,6 +609,12 @@ void dm_bm_prefetch(struct dm_block_manager *bm, dm_block_t b)
dm_bufio_prefetch(bm->bufio, b, 1);
}
+bool dm_bm_is_read_only(struct dm_block_manager *bm)
+{
+ return bm->read_only;
+}
+EXPORT_SYMBOL_GPL(dm_bm_is_read_only);
+
void dm_bm_set_read_only(struct dm_block_manager *bm)
{
bm->read_only = true;
diff --git a/drivers/md/persistent-data/dm-block-manager.h b/drivers/md/persistent-data/dm-block-manager.h
index 1b95dfc17786..84330f59886d 100644
--- a/drivers/md/persistent-data/dm-block-manager.h
+++ b/drivers/md/persistent-data/dm-block-manager.h
@@ -123,6 +123,7 @@ void dm_bm_prefetch(struct dm_block_manager *bm, dm_block_t b);
* Additionally you should not use dm_bm_unlock_move, however no error will
* be returned if you do.
*/
+bool dm_bm_is_read_only(struct dm_block_manager *bm);
void dm_bm_set_read_only(struct dm_block_manager *bm);
void dm_bm_set_read_write(struct dm_block_manager *bm);