diff options
Diffstat (limited to 'drivers/md/persistent-data/dm-space-map-metadata.c')
| -rw-r--r-- | drivers/md/persistent-data/dm-space-map-metadata.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/md/persistent-data/dm-space-map-metadata.c b/drivers/md/persistent-data/dm-space-map-metadata.c index ec2487787617..04698fd03e60 100644 --- a/drivers/md/persistent-data/dm-space-map-metadata.c +++ b/drivers/md/persistent-data/dm-space-map-metadata.c @@ -114,6 +114,7 @@ static bool brb_empty(struct bop_ring_buffer *brb) static unsigned int brb_next(struct bop_ring_buffer *brb, unsigned int old) { unsigned int r = old + 1; + return r >= ARRAY_SIZE(brb->bops) ? 0 : r; } @@ -182,6 +183,7 @@ struct sm_metadata { static int add_bop(struct sm_metadata *smm, enum block_op_type type, dm_block_t b, dm_block_t e) { int r = brb_push(&smm->uncommitted, type, b, e); + if (r) { DMERR("too many recursive allocations"); return -ENOMEM; @@ -487,6 +489,7 @@ static int sm_metadata_new_block(struct dm_space_map *sm, dm_block_t *b) struct sm_metadata *smm = container_of(sm, struct sm_metadata, sm); int r = sm_metadata_new_block_(sm, b); + if (r) { DMERR_LIMIT("unable to allocate new metadata block"); return r; |