diff options
| -rw-r--r-- | drivers/dax/super.c | 21 | ||||
| -rw-r--r-- | drivers/md/dm-linear.c | 15 | ||||
| -rw-r--r-- | drivers/md/dm-stripe.c | 20 | ||||
| -rw-r--r-- | drivers/md/dm.c | 19 | ||||
| -rw-r--r-- | drivers/nvdimm/pmem.c | 7 | ||||
| -rw-r--r-- | fs/dax.c | 4 | ||||
| -rw-r--r-- | include/linux/dax.h | 5 | ||||
| -rw-r--r-- | include/linux/device-mapper.h | 3 |
8 files changed, 17 insertions, 77 deletions
diff --git a/drivers/dax/super.c b/drivers/dax/super.c index 938eb4868f7f..8b458f1b30c7 100644 --- a/drivers/dax/super.c +++ b/drivers/dax/super.c @@ -189,8 +189,10 @@ static umode_t dax_visible(struct kobject *kobj, struct attribute *a, int n) if (!dax_dev) return 0; - if (a == &dev_attr_write_cache.attr && !dax_dev->ops->flush) +#ifndef CONFIG_ARCH_HAS_PMEM_API + if (a == &dev_attr_write_cache.attr) return 0; +#endif return a->mode; } @@ -255,18 +257,23 @@ size_t dax_copy_from_iter(struct dax_device *dax_dev, pgoff_t pgoff, void *addr, } EXPORT_SYMBOL_GPL(dax_copy_from_iter); -void dax_flush(struct dax_device *dax_dev, pgoff_t pgoff, void *addr, - size_t size) +#ifdef CONFIG_ARCH_HAS_PMEM_API +void arch_wb_cache_pmem(void *addr, size_t size); +void dax_flush(struct dax_device *dax_dev, void *addr, size_t size) { - if (!dax_alive(dax_dev)) + if (unlikely(!dax_alive(dax_dev))) return; - if (!test_bit(DAXDEV_WRITE_CACHE, &dax_dev->flags)) + if (unlikely(!test_bit(DAXDEV_WRITE_CACHE, &dax_dev->flags))) return; - if (dax_dev->ops->flush) - dax_dev->ops->flush(dax_dev, pgoff, addr, size); + arch_wb_cache_pmem(addr, size); } +#else +void dax_flush(struct dax_device *dax_dev, void *addr, size_t size) +{ +} +#endif EXPORT_SYMBOL_GPL(dax_flush); void dax_write_cache(struct dax_device *dax_dev, bool wc) diff --git a/drivers/md/dm-linear.c b/drivers/md/dm-linear.c index 41971a090e34..208800610af8 100644 --- a/drivers/md/dm-linear.c +++ b/drivers/md/dm-linear.c @@ -184,20 +184,6 @@ 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, 4, 0}, @@ -212,7 +198,6 @@ 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) diff --git a/drivers/md/dm-stripe.c b/drivers/md/dm-stripe.c index a0375530b07f..1690bb299b3f 100644 --- a/drivers/md/dm-stripe.c +++ b/drivers/md/dm-stripe.c @@ -351,25 +351,6 @@ static size_t stripe_dax_copy_from_iter(struct dm_target *ti, pgoff_t pgoff, return dax_copy_from_iter(dax_dev, pgoff, addr, bytes, i); } -static void stripe_dax_flush(struct dm_target *ti, pgoff_t pgoff, void *addr, - size_t size) -{ - sector_t dev_sector, sector = pgoff * PAGE_SECTORS; - struct stripe_c *sc = ti->private; - struct dax_device *dax_dev; - struct block_device *bdev; - uint32_t stripe; - - 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; - - if (bdev_dax_pgoff(bdev, dev_sector, ALIGN(size, PAGE_SIZE), &pgoff)) - return; - dax_flush(dax_dev, pgoff, addr, size); -} - /* * Stripe status: * @@ -491,7 +472,6 @@ static struct target_type stripe_target = { .io_hints = stripe_io_hints, .direct_access = stripe_dax_direct_access, .dax_copy_from_iter = stripe_dax_copy_from_iter, - .dax_flush = stripe_dax_flush, }; int __init dm_stripe_init(void) diff --git a/drivers/md/dm.c b/drivers/md/dm.c index d669fddd9290..825eaffc24da 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -987,24 +987,6 @@ static size_t dm_dax_copy_from_iter(struct dax_device *dax_dev, pgoff_t pgoff, return ret; } -static void dm_dax_flush(struct dax_device *dax_dev, pgoff_t pgoff, void *addr, - size_t size) -{ - struct mapped_device *md = dax_get_private(dax_dev); - sector_t sector = pgoff * PAGE_SECTORS; - struct dm_target *ti; - int srcu_idx; - - ti = dm_dax_get_live_target(md, sector, &srcu_idx); - - if (!ti) - goto out; - if (ti->type->dax_flush) - ti->type->dax_flush(ti, pgoff, addr, size); - out: - dm_put_live_table(md, srcu_idx); -} - /* * A target may call dm_accept_partial_bio only from the map routine. It is * allowed for all bio types except REQ_PREFLUSH. @@ -2992,7 +2974,6 @@ static const struct block_device_operations dm_blk_dops = { static const struct dax_operations dm_dax_ops = { .direct_access = dm_dax_direct_access, .copy_from_iter = dm_dax_copy_from_iter, - .flush = dm_dax_flush, }; /* diff --git a/drivers/nvdimm/pmem.c b/drivers/nvdimm/pmem.c index f7099adaabc0..88c128258760 100644 --- a/drivers/nvdimm/pmem.c +++ b/drivers/nvdimm/pmem.c @@ -243,16 +243,9 @@ static size_t pmem_copy_from_iter(struct dax_device *dax_dev, pgoff_t pgoff, return copy_from_iter_flushcache(addr, bytes, i); } -static void pmem_dax_flush(struct dax_device *dax_dev, pgoff_t pgoff, - void *addr, size_t size) -{ - arch_wb_cache_pmem(addr, size); -} - static const struct dax_operations pmem_dax_ops = { .direct_access = pmem_dax_direct_access, .copy_from_iter = pmem_copy_from_iter, - .flush = pmem_dax_flush, }; static const struct attribute_group *pmem_attribute_groups[] = { @@ -783,7 +783,7 @@ static int dax_writeback_one(struct block_device *bdev, } dax_mapping_entry_mkclean(mapping, index, pfn_t_to_pfn(pfn)); - dax_flush(dax_dev, pgoff, kaddr, size); + dax_flush(dax_dev, kaddr, size); /* * After we have flushed the cache, we can clear the dirty tag. There * cannot be new dirty data in the pfn after the flush has completed as @@ -978,7 +978,7 @@ int __dax_zero_page_range(struct block_device *bdev, return rc; } memset(kaddr + offset, 0, size); - dax_flush(dax_dev, pgoff, kaddr + offset, size); + dax_flush(dax_dev, kaddr + offset, size); dax_read_unlock(id); } return 0; diff --git a/include/linux/dax.h b/include/linux/dax.h index df97b7af7e2c..0d8f35f6c53d 100644 --- a/include/linux/dax.h +++ b/include/linux/dax.h @@ -19,8 +19,6 @@ struct dax_operations { /* copy_from_iter: required operation for fs-dax direct-i/o */ size_t (*copy_from_iter)(struct dax_device *, pgoff_t, void *, size_t, struct iov_iter *); - /* flush: optional driver-specific cache management after writes */ - void (*flush)(struct dax_device *, pgoff_t, void *, size_t); }; extern struct attribute_group dax_attribute_group; @@ -84,8 +82,7 @@ long dax_direct_access(struct dax_device *dax_dev, pgoff_t pgoff, long nr_pages, void **kaddr, pfn_t *pfn); size_t dax_copy_from_iter(struct dax_device *dax_dev, pgoff_t pgoff, void *addr, size_t bytes, struct iov_iter *i); -void dax_flush(struct dax_device *dax_dev, pgoff_t pgoff, void *addr, - size_t size); +void dax_flush(struct dax_device *dax_dev, void *addr, size_t size); void dax_write_cache(struct dax_device *dax_dev, bool wc); bool dax_write_cache_enabled(struct dax_device *dax_dev); diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h index 3b5fdf308148..a5538433c927 100644 --- a/include/linux/device-mapper.h +++ b/include/linux/device-mapper.h @@ -134,8 +134,6 @@ typedef long (*dm_dax_direct_access_fn) (struct dm_target *ti, pgoff_t pgoff, long nr_pages, void **kaddr, pfn_t *pfn); typedef size_t (*dm_dax_copy_from_iter_fn)(struct dm_target *ti, pgoff_t pgoff, void *addr, size_t bytes, struct iov_iter *i); -typedef void (*dm_dax_flush_fn)(struct dm_target *ti, pgoff_t pgoff, void *addr, - size_t size); #define PAGE_SECTORS (PAGE_SIZE / 512) void dm_error(const char *message); @@ -186,7 +184,6 @@ struct target_type { dm_io_hints_fn io_hints; dm_dax_direct_access_fn direct_access; dm_dax_copy_from_iter_fn dax_copy_from_iter; - dm_dax_flush_fn dax_flush; /* For internal device-mapper use. */ struct list_head list; |