diff options
Diffstat (limited to 'drivers/md/dm.c')
| -rw-r--r-- | drivers/md/dm.c | 27 |
1 files changed, 20 insertions, 7 deletions
diff --git a/drivers/md/dm.c b/drivers/md/dm.c index 9c9272b..70d5b82a3 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -1567,21 +1567,26 @@ static void bio_setup_sector(struct bio *bio, sector_t sector, unsigned len) /* * Creates a bio that consists of range of complete bvecs. */ -static void clone_bio(struct dm_target_io *tio, struct bio *bio, - sector_t sector, unsigned len) +static int clone_bio(struct dm_target_io *tio, struct bio *bio, + sector_t sector, unsigned len) { struct bio *clone = &tio->clone; __bio_clone_fast(clone, bio); - if (bio_integrity(bio)) - bio_integrity_clone(clone, bio, GFP_NOIO); + if (bio_integrity(bio)) { + int r = bio_integrity_clone(clone, bio, GFP_NOIO); + if (r < 0) + return r; + } bio_advance(clone, to_bytes(sector - clone->bi_iter.bi_sector)); clone->bi_iter.bi_size = to_bytes(len); if (bio_integrity(bio)) bio_integrity_trim(clone, 0, len); + + return 0; } static struct dm_target_io *alloc_tio(struct clone_info *ci, @@ -1638,13 +1643,14 @@ static int __send_empty_flush(struct clone_info *ci) return 0; } -static void __clone_and_map_data_bio(struct clone_info *ci, struct dm_target *ti, +static int __clone_and_map_data_bio(struct clone_info *ci, struct dm_target *ti, sector_t sector, unsigned *len) { struct bio *bio = ci->bio; struct dm_target_io *tio; unsigned target_bio_nr; unsigned num_target_bios = 1; + int r = 0; /* * Does the target want to receive duplicate copies of the bio? @@ -1655,9 +1661,13 @@ static void __clone_and_map_data_bio(struct clone_info *ci, struct dm_target *ti for (target_bio_nr = 0; target_bio_nr < num_target_bios; target_bio_nr++) { tio = alloc_tio(ci, ti, target_bio_nr); tio->len_ptr = len; - clone_bio(tio, bio, sector, *len); + r = clone_bio(tio, bio, sector, *len); + if (r < 0) + break; __map_bio(tio); } + + return r; } typedef unsigned (*get_num_bios_fn)(struct dm_target *ti); @@ -1734,6 +1744,7 @@ static int __split_and_process_non_flush(struct clone_info *ci) struct bio *bio = ci->bio; struct dm_target *ti; unsigned len; + int r; if (unlikely(bio->bi_rw & REQ_DISCARD)) return __send_discard(ci); @@ -1746,7 +1757,9 @@ static int __split_and_process_non_flush(struct clone_info *ci) len = min_t(sector_t, max_io_len(ci->sector, ti), ci->sector_count); - __clone_and_map_data_bio(ci, ti, ci->sector, &len); + r = __clone_and_map_data_bio(ci, ti, ci->sector, &len); + if (r < 0) + return r; ci->sector += len; ci->sector_count -= len; |