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dm space map metadata: fix sm_bootstrap_get_nr_blocks()

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commit c1c6156fe4d4577444b769d7edd5dd503e57bbc9 upstream.

This function isn't right and it causes a static checker warning:

	drivers/md/dm-thin.c:3016 maybe_resize_data_dev()
	error: potentially using uninitialized 'sb_data_size'.

It should set "*count" and return zero on success the same as the
sm_metadata_get_nr_blocks() function does earlier.

Fixes: 3241b1d3e0 ('dm: add persistent data library')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Dan Carpenter 2014-11-29 15:50:21 +03:00 committed by Greg Kroah-Hartman
parent e1102c5b03
commit 81f250e1cf
1 changed files with 3 additions and 1 deletions
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4
drivers/md/persistent-data/dm-space-map-metadata.c
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@ -493,7 +493,9 @@ static int sm_bootstrap_get_nr_blocks(struct dm_space_map *sm, dm_block_t *count
{
struct sm_metadata *smm = container_of(sm, struct sm_metadata, sm);
return smm->ll.nr_blocks;
*count = smm->ll.nr_blocks;
return 0;
}
static int sm_bootstrap_get_nr_free(struct dm_space_map *sm, dm_block_t *count)