diff options
| author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-10-20 00:10:27 -0300 |
|---|---|---|
| committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-10-20 00:10:27 -0300 |
| commit | d0b2f91bede3bd5e3d24dd6803e56eee959c1797 (patch) | |
| tree | 7fee4ab0509879c373c4f2cbd5b8a5be5b4041ee /drivers/md/dm-stripe.c | |
| parent | e914f8eb445e8f74b00303c19c2ffceaedd16a05 (diff) | |
Linux-libre 4.8.2-gnupck-4.8.2-gnu
Diffstat (limited to 'drivers/md/dm-stripe.c')
| -rw-r--r-- | drivers/md/dm-stripe.c | 34 |
1 files changed, 29 insertions, 5 deletions
diff --git a/drivers/md/dm-stripe.c b/drivers/md/dm-stripe.c index 797ddb900..28193a57b 100644 --- a/drivers/md/dm-stripe.c +++ b/drivers/md/dm-stripe.c @@ -286,14 +286,14 @@ static int stripe_map(struct dm_target *ti, struct bio *bio) uint32_t stripe; unsigned target_bio_nr; - if (bio->bi_rw & REQ_FLUSH) { + if (bio->bi_opf & REQ_PREFLUSH) { target_bio_nr = dm_bio_get_target_bio_nr(bio); BUG_ON(target_bio_nr >= sc->stripes); bio->bi_bdev = sc->stripe[target_bio_nr].dev->bdev; return DM_MAPIO_REMAPPED; } - if (unlikely(bio->bi_rw & REQ_DISCARD) || - unlikely(bio->bi_rw & REQ_WRITE_SAME)) { + if (unlikely(bio_op(bio) == REQ_OP_DISCARD) || + unlikely(bio_op(bio) == REQ_OP_WRITE_SAME)) { target_bio_nr = dm_bio_get_target_bio_nr(bio); BUG_ON(target_bio_nr >= sc->stripes); return stripe_map_range(sc, bio, target_bio_nr); @@ -308,6 +308,29 @@ static int stripe_map(struct dm_target *ti, struct bio *bio) return DM_MAPIO_REMAPPED; } +static long stripe_direct_access(struct dm_target *ti, sector_t sector, + void **kaddr, pfn_t *pfn, long size) +{ + struct stripe_c *sc = ti->private; + uint32_t stripe; + struct block_device *bdev; + struct blk_dax_ctl dax = { + .size = size, + }; + long ret; + + stripe_map_sector(sc, sector, &stripe, &dax.sector); + + dax.sector += sc->stripe[stripe].physical_start; + bdev = sc->stripe[stripe].dev->bdev; + + ret = bdev_direct_access(bdev, &dax); + *kaddr = dax.addr; + *pfn = dax.pfn; + + return ret; +} + /* * Stripe status: * @@ -360,7 +383,7 @@ static int stripe_end_io(struct dm_target *ti, struct bio *bio, int error) if (!error) return 0; /* I/O complete */ - if ((error == -EWOULDBLOCK) && (bio->bi_rw & REQ_RAHEAD)) + if ((error == -EWOULDBLOCK) && (bio->bi_opf & REQ_RAHEAD)) return error; if (error == -EOPNOTSUPP) @@ -416,7 +439,7 @@ static void stripe_io_hints(struct dm_target *ti, static struct target_type stripe_target = { .name = "striped", - .version = {1, 5, 1}, + .version = {1, 6, 0}, .module = THIS_MODULE, .ctr = stripe_ctr, .dtr = stripe_dtr, @@ -425,6 +448,7 @@ static struct target_type stripe_target = { .status = stripe_status, .iterate_devices = stripe_iterate_devices, .io_hints = stripe_io_hints, + .direct_access = stripe_direct_access, }; int __init dm_stripe_init(void) |