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Diffstat (limited to 'drivers/md/dm-thin-metadata.c')
-rw-r--r--drivers/md/dm-thin-metadata.c30
1 files changed, 30 insertions, 0 deletions
diff --git a/drivers/md/dm-thin-metadata.c b/drivers/md/dm-thin-metadata.c
index 43824d73366d..a15091a0d40c 100644
--- a/drivers/md/dm-thin-metadata.c
+++ b/drivers/md/dm-thin-metadata.c
@@ -1677,6 +1677,36 @@ int dm_pool_block_is_used(struct dm_pool_metadata *pmd, dm_block_t b, bool *resu
return r;
}
+int dm_pool_inc_data_range(struct dm_pool_metadata *pmd, dm_block_t b, dm_block_t e)
+{
+ int r = 0;
+
+ down_write(&pmd->root_lock);
+ for (; b != e; b++) {
+ r = dm_sm_inc_block(pmd->data_sm, b);
+ if (r)
+ break;
+ }
+ up_write(&pmd->root_lock);
+
+ return r;
+}
+
+int dm_pool_dec_data_range(struct dm_pool_metadata *pmd, dm_block_t b, dm_block_t e)
+{
+ int r = 0;
+
+ down_write(&pmd->root_lock);
+ for (; b != e; b++) {
+ r = dm_sm_dec_block(pmd->data_sm, b);
+ if (r)
+ break;
+ }
+ up_write(&pmd->root_lock);
+
+ return r;
+}
+
bool dm_thin_changed_this_transaction(struct dm_thin_device *td)
{
int r;