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dm cache: actually resize cache 

Commit f494a9c6b1 ("dm cache: cache
shrinking support") broke cache resizing support.

dm_cache_resize() is called with cache->cache_size before it gets
updated to new_size, so it is a no-op.  But the dm-cache superblock is
updated with the new_size even though the backing dm-array is not
resized.  Fix this by passing the new_size to dm_cache_resize().

Signed-off-by: Vincent Pelletier <plr.vincent@gmail.com>
Acked-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
This commit is contained in:
Vincent Pelletier 2013-11-30 12:58:42 +01:00 committed by Mike Snitzer
parent 83f539e1a4
commit 088448007b
1 changed files with 1 additions and 1 deletions
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2
drivers/md/dm-cache-target.c
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@ -2755,7 +2755,7 @@ static int resize_cache_dev(struct cache *cache, dm_cblock_t new_size)
{
int r;
r = dm_cache_resize(cache->cmd, cache->cache_size);
r = dm_cache_resize(cache->cmd, new_size);
if (r) {
DMERR("could not resize cache metadata");
return r;