diff options
Diffstat (limited to 'drivers/md/dm-snap-persistent.c')
| -rw-r--r-- | drivers/md/dm-snap-persistent.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/md/dm-snap-persistent.c b/drivers/md/dm-snap-persistent.c index 170eac3f2e86..d64064dca940 100644 --- a/drivers/md/dm-snap-persistent.c +++ b/drivers/md/dm-snap-persistent.c @@ -276,6 +276,7 @@ static void skip_metadata(struct pstore *ps) { uint32_t stride = ps->exceptions_per_area + 1; chunk_t next_free = ps->next_free; + if (sector_div(next_free, stride) == NUM_SNAPSHOT_HDR_CHUNKS) ps->next_free++; } @@ -521,6 +522,7 @@ static int read_exceptions(struct pstore *ps, if (DM_PREFETCH_CHUNKS) { do { chunk_t pf_chunk = area_location(ps, prefetch_area); + if (unlikely(pf_chunk >= dm_bufio_get_device_size(client))) break; dm_bufio_prefetch(client, pf_chunk, 1); @@ -879,6 +881,7 @@ static int persistent_ctr(struct dm_exception_store *store, char *options) if (options) { char overflow = toupper(options[0]); + if (overflow == 'O') store->userspace_supports_overflow = true; else { |