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Diffstat (limited to 'kernel/drivers/md/dm-stripe.c')
-rw-r--r--kernel/drivers/md/dm-stripe.c35
1 files changed, 7 insertions, 28 deletions
diff --git a/kernel/drivers/md/dm-stripe.c b/kernel/drivers/md/dm-stripe.c
index f8b37d4c0..797ddb900 100644
--- a/kernel/drivers/md/dm-stripe.c
+++ b/kernel/drivers/md/dm-stripe.c
@@ -75,13 +75,15 @@ static int get_stripe(struct dm_target *ti, struct stripe_c *sc,
{
unsigned long long start;
char dummy;
+ int ret;
if (sscanf(argv[1], "%llu%c", &start, &dummy) != 1)
return -EINVAL;
- if (dm_get_device(ti, argv[0], dm_table_get_mode(ti->table),
- &sc->stripe[stripe].dev))
- return -ENXIO;
+ ret = dm_get_device(ti, argv[0], dm_table_get_mode(ti->table),
+ &sc->stripe[stripe].dev);
+ if (ret)
+ return ret;
sc->stripe[stripe].physical_start = start;
@@ -273,7 +275,7 @@ static int stripe_map_range(struct stripe_c *sc, struct bio *bio,
return DM_MAPIO_REMAPPED;
} else {
/* The range doesn't map to the target stripe */
- bio_endio(bio, 0);
+ bio_endio(bio);
return DM_MAPIO_SUBMITTED;
}
}
@@ -412,26 +414,6 @@ static void stripe_io_hints(struct dm_target *ti,
blk_limits_io_opt(limits, chunk_size * sc->stripes);
}
-static int stripe_merge(struct dm_target *ti, struct bvec_merge_data *bvm,
- struct bio_vec *biovec, int max_size)
-{
- struct stripe_c *sc = ti->private;
- sector_t bvm_sector = bvm->bi_sector;
- uint32_t stripe;
- struct request_queue *q;
-
- stripe_map_sector(sc, bvm_sector, &stripe, &bvm_sector);
-
- q = bdev_get_queue(sc->stripe[stripe].dev->bdev);
- if (!q->merge_bvec_fn)
- return max_size;
-
- bvm->bi_bdev = sc->stripe[stripe].dev->bdev;
- bvm->bi_sector = sc->stripe[stripe].physical_start + bvm_sector;
-
- return min(max_size, q->merge_bvec_fn(q, bvm, biovec));
-}
-
static struct target_type stripe_target = {
.name = "striped",
.version = {1, 5, 1},
@@ -443,7 +425,6 @@ static struct target_type stripe_target = {
.status = stripe_status,
.iterate_devices = stripe_iterate_devices,
.io_hints = stripe_io_hints,
- .merge = stripe_merge,
};
int __init dm_stripe_init(void)
@@ -451,10 +432,8 @@ int __init dm_stripe_init(void)
int r;
r = dm_register_target(&stripe_target);
- if (r < 0) {
+ if (r < 0)
DMWARN("target registration failed");
- return r;
- }
return r;
}