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| author | Stephen Rothwell <sfr@canb.auug.org.au> | 2015-09-11 10:56:17 +1000 |
|---|---|---|
| committer | Stephen Rothwell <sfr@canb.auug.org.au> | 2015-09-11 10:56:17 +1000 |
| commit | de0ba0f18d48b24afbe6f1cc2782ba60313d8d74 (patch) | |
| tree | 605085b4c24806aef32b508b0f515d18a4987b69 | |
| parent | 0c8c76df5eb17074a327b0232c3bd3a5bfe50db7 (diff) | |
| parent | 9efb520a57f13b92b5a0f0e526caa32489657465 (diff) | |
Merge remote-tracking branch 'device-mapper/for-next'
| -rw-r--r-- | drivers/md/dm-thin.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c index 6578b7bc1fbb..6fcbfb063366 100644 --- a/drivers/md/dm-thin.c +++ b/drivers/md/dm-thin.c @@ -4249,6 +4249,10 @@ static void thin_io_hints(struct dm_target *ti, struct queue_limits *limits) { struct thin_c *tc = ti->private; struct pool *pool = tc->pool; + struct queue_limits *pool_limits = dm_get_queue_limits(pool->pool_md); + + if (!pool_limits->discard_granularity) + return; /* pool's discard support is disabled */ limits->discard_granularity = pool->sectors_per_block << SECTOR_SHIFT; limits->max_discard_sectors = 2048 * 1024 * 16; /* 16G */ |