From: Christoph Hellwig hch@lst.de
[ Upstream commit 5d2a228b9e1319ff188f9ea89006fbe575561921 ]
The device mapper DAX support is all hanging off a block device and thus can't be used with device dax. Make it depend on CONFIG_FS_DAX instead of CONFIG_DAX_DRIVER. This also means that bdev_dax_pgoff only needs to be built under CONFIG_FS_DAX now.
Signed-off-by: Christoph Hellwig hch@lst.de Acked-by: Mike Snitzer snitzer@redhat.com Link: https://lore.kernel.org/r/20211129102203.2243509-3-hch@lst.de Signed-off-by: Dan Williams dan.j.williams@intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/dax/super.c | 6 ++---- drivers/md/dm-linear.c | 2 +- drivers/md/dm-log-writes.c | 2 +- drivers/md/dm-stripe.c | 2 +- drivers/md/dm-writecache.c | 2 +- drivers/md/dm.c | 2 +- 6 files changed, 7 insertions(+), 9 deletions(-)
diff --git a/drivers/dax/super.c b/drivers/dax/super.c index b882cf8106ea3..e20d0cef10a18 100644 --- a/drivers/dax/super.c +++ b/drivers/dax/super.c @@ -63,7 +63,7 @@ static int dax_host_hash(const char *host) return hashlen_hash(hashlen_string("DAX", host)) % DAX_HASH_SIZE; }
-#ifdef CONFIG_BLOCK +#if defined(CONFIG_BLOCK) && defined(CONFIG_FS_DAX) #include <linux/blkdev.h>
int bdev_dax_pgoff(struct block_device *bdev, sector_t sector, size_t size, @@ -80,7 +80,6 @@ int bdev_dax_pgoff(struct block_device *bdev, sector_t sector, size_t size, } EXPORT_SYMBOL(bdev_dax_pgoff);
-#if IS_ENABLED(CONFIG_FS_DAX) /** * dax_get_by_host() - temporary lookup mechanism for filesystem-dax * @host: alternate name for the device registered by a dax driver @@ -219,8 +218,7 @@ bool dax_supported(struct dax_device *dax_dev, struct block_device *bdev, return ret; } EXPORT_SYMBOL_GPL(dax_supported); -#endif /* CONFIG_FS_DAX */ -#endif /* CONFIG_BLOCK */ +#endif /* CONFIG_BLOCK && CONFIG_FS_DAX */
enum dax_device_flags { /* !alive + rcu grace period == no new operations / mappings */ diff --git a/drivers/md/dm-linear.c b/drivers/md/dm-linear.c index 66ba16713f696..0a260c35aeeed 100644 --- a/drivers/md/dm-linear.c +++ b/drivers/md/dm-linear.c @@ -162,7 +162,7 @@ static int linear_iterate_devices(struct dm_target *ti, return fn(ti, lc->dev, lc->start, ti->len, data); }
-#if IS_ENABLED(CONFIG_DAX_DRIVER) +#if IS_ENABLED(CONFIG_FS_DAX) static long linear_dax_direct_access(struct dm_target *ti, pgoff_t pgoff, long nr_pages, void **kaddr, pfn_t *pfn) { diff --git a/drivers/md/dm-log-writes.c b/drivers/md/dm-log-writes.c index 0b3ef977ceeba..3155875d4e5b0 100644 --- a/drivers/md/dm-log-writes.c +++ b/drivers/md/dm-log-writes.c @@ -901,7 +901,7 @@ static void log_writes_io_hints(struct dm_target *ti, struct queue_limits *limit limits->io_min = limits->physical_block_size; }
-#if IS_ENABLED(CONFIG_DAX_DRIVER) +#if IS_ENABLED(CONFIG_FS_DAX) static int log_dax(struct log_writes_c *lc, sector_t sector, size_t bytes, struct iov_iter *i) { diff --git a/drivers/md/dm-stripe.c b/drivers/md/dm-stripe.c index 6660b6b53d5bf..f084607220293 100644 --- a/drivers/md/dm-stripe.c +++ b/drivers/md/dm-stripe.c @@ -300,7 +300,7 @@ static int stripe_map(struct dm_target *ti, struct bio *bio) return DM_MAPIO_REMAPPED; }
-#if IS_ENABLED(CONFIG_DAX_DRIVER) +#if IS_ENABLED(CONFIG_FS_DAX) static long stripe_dax_direct_access(struct dm_target *ti, pgoff_t pgoff, long nr_pages, void **kaddr, pfn_t *pfn) { diff --git a/drivers/md/dm-writecache.c b/drivers/md/dm-writecache.c index 4b8991cde223d..4f31591d2d25e 100644 --- a/drivers/md/dm-writecache.c +++ b/drivers/md/dm-writecache.c @@ -38,7 +38,7 @@ #define BITMAP_GRANULARITY PAGE_SIZE #endif
-#if IS_ENABLED(CONFIG_ARCH_HAS_PMEM_API) && IS_ENABLED(CONFIG_DAX_DRIVER) +#if IS_ENABLED(CONFIG_ARCH_HAS_PMEM_API) && IS_ENABLED(CONFIG_FS_DAX) #define DM_WRITECACHE_HAS_PMEM #endif
diff --git a/drivers/md/dm.c b/drivers/md/dm.c index acc84dc1bded5..b93fcc91176e5 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -1783,7 +1783,7 @@ static struct mapped_device *alloc_dev(int minor) md->disk->private_data = md; sprintf(md->disk->disk_name, "dm-%d", minor);
- if (IS_ENABLED(CONFIG_DAX_DRIVER)) { + if (IS_ENABLED(CONFIG_FS_DAX)) { md->dax_dev = alloc_dax(md, md->disk->disk_name, &dm_dax_ops, 0); if (IS_ERR(md->dax_dev)) {