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authorJosh Durgin <josh.durgin@inktank.com>2014-04-08 01:52:03 +0200
committerIlya Dryomov <idryomov@redhat.com>2014-10-14 19:03:37 +0200
commitb76f82398c1017e303d87760e22125714010207f (patch)
tree9b607589ee16f3f9da01849a75733717c818b2c9 /drivers/block
parentrbd: use helpers to handle discard for layered images correctly (diff)
downloadlinux-b76f82398c1017e303d87760e22125714010207f.tar.xz
linux-b76f82398c1017e303d87760e22125714010207f.zip
rbd: set the remaining discard properties to enable support
max_discard_sectors must be set for the queue to support discard. Operations implementing discard for rbd zero data, so report that. Signed-off-by: Josh Durgin <josh.durgin@inktank.com>
Diffstat (limited to 'drivers/block')
-rw-r--r--drivers/block/rbd.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index e1dcd36ae072..7712ae65753c 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -3764,6 +3764,8 @@ static int rbd_init_disk(struct rbd_device *rbd_dev)
queue_flag_set_unlocked(QUEUE_FLAG_DISCARD, q);
q->limits.discard_granularity = segment_size;
q->limits.discard_alignment = segment_size;
+ q->limits.max_discard_sectors = segment_size / SECTOR_SIZE;
+ q->limits.discard_zeroes_data = 1;
blk_queue_merge_bvec(q, rbd_merge_bvec);
disk->queue = q;