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authorJoe Thornber <ejt@redhat.com>2014-09-17 10:17:39 +0100
committerMike Snitzer <snitzer@redhat.com>2014-11-10 15:25:30 -0500
commit5f274d886598c9fd26d2499bf3f68306f170e9db (patch)
treeaf0ded19382c65e832ea51e2b01efb40581c81dd /drivers/md/dm-thin.c
parentf1afb36a6102b52949c2c6d8eb250eddcce3fc5f (diff)
downloadop-kernel-dev-5f274d886598c9fd26d2499bf3f68306f170e9db.zip
op-kernel-dev-5f274d886598c9fd26d2499bf3f68306f170e9db.tar.gz
dm bio prison: introduce support for locking ranges of blocks
Ranges will be placed in the same cell if they overlap. Range locking is a prerequisite for more efficient multi-block discard support in both the cache and thin-provisioning targets. Signed-off-by: Joe Thornber <ejt@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'drivers/md/dm-thin.c')
-rw-r--r--drivers/md/dm-thin.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c
index fb05f6a..8c5504c 100644
--- a/drivers/md/dm-thin.c
+++ b/drivers/md/dm-thin.c
@@ -115,7 +115,8 @@ static void build_data_key(struct dm_thin_device *td,
{
key->virtual = 0;
key->dev = dm_thin_dev_id(td);
- key->block = b;
+ key->block_begin = b;
+ key->block_end = b + 1ULL;
}
static void build_virtual_key(struct dm_thin_device *td, dm_block_t b,
@@ -123,7 +124,8 @@ static void build_virtual_key(struct dm_thin_device *td, dm_block_t b,
{
key->virtual = 1;
key->dev = dm_thin_dev_id(td);
- key->block = b;
+ key->block_begin = b;
+ key->block_end = b + 1ULL;
}
/*----------------------------------------------------------------*/
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