bcache: Fix discard granularity

blk_stack_limits() doesn't like a discard granularity of 0. Signed-off-by: Kent Overstreet <kmo@daterainc.com>
git-mirror · Mar 18, 2014 · 90db691 · 90db691
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commit 90db691
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c
@@ -843,6 +843,7 @@ static int bcache_device_init(struct bcache_device *d, unsigned block_size,
 	q->limits.max_segment_size	= UINT_MAX;
 	q->limits.max_segments		= BIO_MAX_PAGES;
 	q->limits.max_discard_sectors	= UINT_MAX;
+	q->limits.discard_granularity	= 512;
 	q->limits.io_min		= block_size;
 	q->limits.logical_block_size	= block_size;
 	q->limits.physical_block_size	= block_size;