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authorJoe Thornber <ejt@redhat.com>2014-10-06 18:24:55 +0400
committerMike Snitzer <snitzer@redhat.com>2014-11-10 23:25:26 +0300
commite5cfc69a513cdc9d9e753c5ce07f0cc6b496bfd3 (patch)
tree720c80d4d1cda8be53296d215bcfed7c404cf45b /drivers/md/dm-thin-metadata.h
parenta195db2d29a47c2c3a61386009bd400df18c86cf (diff)
downloadlinux-e5cfc69a513cdc9d9e753c5ce07f0cc6b496bfd3.tar.xz
dm thin metadata: change dm_thin_find_block to allow blocking, but not issuing, IO
This change is a prerequisite for allowing metadata to be prefetched. Signed-off-by: Joe Thornber <ejt@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'drivers/md/dm-thin-metadata.h')
-rw-r--r--drivers/md/dm-thin-metadata.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/md/dm-thin-metadata.h b/drivers/md/dm-thin-metadata.h
index e3c857db195a..efedd5a4cd8f 100644
--- a/drivers/md/dm-thin-metadata.h
+++ b/drivers/md/dm-thin-metadata.h
@@ -139,12 +139,12 @@ struct dm_thin_lookup_result {
/*
* Returns:
- * -EWOULDBLOCK iff @can_block is set and would block.
+ * -EWOULDBLOCK iff @can_issue_io is set and would issue IO
* -ENODATA iff that mapping is not present.
* 0 success
*/
int dm_thin_find_block(struct dm_thin_device *td, dm_block_t block,
- int can_block, struct dm_thin_lookup_result *result);
+ int can_issue_io, struct dm_thin_lookup_result *result);
/*
* Obtain an unused block.