diff options
| author | Dan Williams <dan.j.williams@intel.com> | 2017-05-04 23:38:43 -0700 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2017-05-04 23:38:43 -0700 |
| commit | 736163671bcb163fc82600b46c83dfa89d532d95 (patch) | |
| tree | 0639dc9d9fa180450b4e8fbda706eaae5f1876da /drivers/md/dm-stripe.c | |
| parent | d5483feda85a8f39ee2e940e279547c686aac30c (diff) | |
| parent | 1ef97fe4f8abd3317d5c3c860f990e02c2633959 (diff) | |
Merge branch 'for-4.12/dax' into libnvdimm-for-nextlibnvdimm-for-4.12
Diffstat (limited to 'drivers/md/dm-stripe.c')
| -rw-r--r-- | drivers/md/dm-stripe.c | 29 |
1 files changed, 14 insertions, 15 deletions
diff --git a/drivers/md/dm-stripe.c b/drivers/md/dm-stripe.c index 28193a57bf47..cb4b1e9e16ab 100644 --- a/drivers/md/dm-stripe.c +++ b/drivers/md/dm-stripe.c @@ -11,6 +11,7 @@ #include <linux/init.h> #include <linux/blkdev.h> #include <linux/bio.h> +#include <linux/dax.h> #include <linux/slab.h> #include <linux/log2.h> @@ -308,27 +309,25 @@ 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) +static long stripe_dax_direct_access(struct dm_target *ti, pgoff_t pgoff, + long nr_pages, void **kaddr, pfn_t *pfn) { + sector_t dev_sector, sector = pgoff * PAGE_SECTORS; struct stripe_c *sc = ti->private; - uint32_t stripe; + struct dax_device *dax_dev; struct block_device *bdev; - struct blk_dax_ctl dax = { - .size = size, - }; + uint32_t stripe; long ret; - stripe_map_sector(sc, sector, &stripe, &dax.sector); - - dax.sector += sc->stripe[stripe].physical_start; + stripe_map_sector(sc, sector, &stripe, &dev_sector); + dev_sector += sc->stripe[stripe].physical_start; + dax_dev = sc->stripe[stripe].dev->dax_dev; bdev = sc->stripe[stripe].dev->bdev; - ret = bdev_direct_access(bdev, &dax); - *kaddr = dax.addr; - *pfn = dax.pfn; - - return ret; + ret = bdev_dax_pgoff(bdev, dev_sector, nr_pages * PAGE_SIZE, &pgoff); + if (ret) + return ret; + return dax_direct_access(dax_dev, pgoff, nr_pages, kaddr, pfn); } /* @@ -448,7 +447,7 @@ static struct target_type stripe_target = { .status = stripe_status, .iterate_devices = stripe_iterate_devices, .io_hints = stripe_io_hints, - .direct_access = stripe_direct_access, + .direct_access = stripe_dax_direct_access, }; int __init dm_stripe_init(void) |