diff options
Diffstat (limited to 'drivers/md/dm-linear.c')
| -rw-r--r-- | drivers/md/dm-linear.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/md/dm-linear.c b/drivers/md/dm-linear.c index 0841ec1bfbad..25e661974319 100644 --- a/drivers/md/dm-linear.c +++ b/drivers/md/dm-linear.c @@ -173,6 +173,20 @@ static size_t linear_dax_copy_from_iter(struct dm_target *ti, pgoff_t pgoff, return dax_copy_from_iter(dax_dev, pgoff, addr, bytes, i); } +static void linear_dax_flush(struct dm_target *ti, pgoff_t pgoff, void *addr, + size_t size) +{ + struct linear_c *lc = ti->private; + struct block_device *bdev = lc->dev->bdev; + struct dax_device *dax_dev = lc->dev->dax_dev; + sector_t dev_sector, sector = pgoff * PAGE_SECTORS; + + dev_sector = linear_map_sector(ti, sector); + if (bdev_dax_pgoff(bdev, dev_sector, ALIGN(size, PAGE_SIZE), &pgoff)) + return; + dax_flush(dax_dev, pgoff, addr, size); +} + static struct target_type linear_target = { .name = "linear", .version = {1, 3, 0}, @@ -186,6 +200,7 @@ static struct target_type linear_target = { .iterate_devices = linear_iterate_devices, .direct_access = linear_dax_direct_access, .dax_copy_from_iter = linear_dax_copy_from_iter, + .dax_flush = linear_dax_flush, }; int __init dm_linear_init(void) |