diff --git a/drivers/dax/super.c b/drivers/dax/super.c
index c0910687fbcb..90cae9d84b9c 100644
--- a/drivers/dax/super.c
+++ b/drivers/dax/super.c
@@ -110,6 +110,7 @@ enum dax_device_flags {
  * @dax_dev: a dax_device instance representing the logical memory range
  * @pgoff: offset in pages from the start of the device to translate
  * @nr_pages: number of consecutive pages caller can handle relative to @pfn
+ * @mode: indicate whether dax operation is in normal or recovery mode
  * @kaddr: output parameter that returns a virtual address mapping of pfn
  * @pfn: output parameter that returns an absolute pfn translation of @pgoff
  *
@@ -117,7 +118,7 @@ enum dax_device_flags {
  * pages accessible at the device relative @pgoff.
  */
 long dax_direct_access(struct dax_device *dax_dev, pgoff_t pgoff, long nr_pages,
-		void **kaddr, pfn_t *pfn)
+		int mode, void **kaddr, pfn_t *pfn)
 {
 	long avail;
 
@@ -131,7 +132,7 @@ long dax_direct_access(struct dax_device *dax_dev, pgoff_t pgoff, long nr_pages,
 		return -EINVAL;
 
 	avail = dax_dev->ops->direct_access(dax_dev, pgoff, nr_pages,
-			kaddr, pfn);
+			mode, kaddr, pfn);
 	if (!avail)
 		return -ERANGE;
 	return min(avail, nr_pages);
@@ -139,22 +140,24 @@ long dax_direct_access(struct dax_device *dax_dev, pgoff_t pgoff, long nr_pages,
 EXPORT_SYMBOL_GPL(dax_direct_access);
 
 size_t dax_copy_from_iter(struct dax_device *dax_dev, pgoff_t pgoff, void *addr,
-		size_t bytes, struct iov_iter *i)
+		size_t bytes, struct iov_iter *i, int mode)
 {
 	if (!dax_alive(dax_dev))
 		return 0;
 
-	return dax_dev->ops->copy_from_iter(dax_dev, pgoff, addr, bytes, i);
+	return dax_dev->ops->copy_from_iter(dax_dev, pgoff, addr, bytes, i,
+						mode);
 }
 EXPORT_SYMBOL_GPL(dax_copy_from_iter);
 
 size_t dax_copy_to_iter(struct dax_device *dax_dev, pgoff_t pgoff, void *addr,
-		size_t bytes, struct iov_iter *i)
+		size_t bytes, struct iov_iter *i, int mode)
 {
 	if (!dax_alive(dax_dev))
 		return 0;
 
-	return dax_dev->ops->copy_to_iter(dax_dev, pgoff, addr, bytes, i);
+	return dax_dev->ops->copy_to_iter(dax_dev, pgoff, addr, bytes, i,
+						mode);
 }
 EXPORT_SYMBOL_GPL(dax_copy_to_iter);
 
diff --git a/drivers/md/dm-linear.c b/drivers/md/dm-linear.c
index 90de42f6743a..c73ac6b98801 100644
--- a/drivers/md/dm-linear.c
+++ b/drivers/md/dm-linear.c
@@ -173,27 +173,29 @@ static struct dax_device *linear_dax_pgoff(struct dm_target *ti, pgoff_t *pgoff)
 }
 
 static long linear_dax_direct_access(struct dm_target *ti, pgoff_t pgoff,
-		long nr_pages, void **kaddr, pfn_t *pfn)
+		long nr_pages, int mode, void **kaddr, pfn_t *pfn)
 {
 	struct dax_device *dax_dev = linear_dax_pgoff(ti, &pgoff);
 
-	return dax_direct_access(dax_dev, pgoff, nr_pages, kaddr, pfn);
+	return dax_direct_access(dax_dev, pgoff, nr_pages, mode, kaddr, pfn);
 }
 
 static size_t linear_dax_copy_from_iter(struct dm_target *ti, pgoff_t pgoff,
-		void *addr, size_t bytes, struct iov_iter *i)
+		void *addr, size_t bytes, struct iov_iter *i,
+		int mode)
 {
 	struct dax_device *dax_dev = linear_dax_pgoff(ti, &pgoff);
 
-	return dax_copy_from_iter(dax_dev, pgoff, addr, bytes, i);
+	return dax_copy_from_iter(dax_dev, pgoff, addr, bytes, i, mode);
 }
 
 static size_t linear_dax_copy_to_iter(struct dm_target *ti, pgoff_t pgoff,
-		void *addr, size_t bytes, struct iov_iter *i)
+		void *addr, size_t bytes, struct iov_iter *i,
+		int mode)
 {
 	struct dax_device *dax_dev = linear_dax_pgoff(ti, &pgoff);
 
-	return dax_copy_to_iter(dax_dev, pgoff, addr, bytes, i);
+	return dax_copy_to_iter(dax_dev, pgoff, addr, bytes, i, mode);
 }
 
 static int linear_dax_zero_page_range(struct dm_target *ti, pgoff_t pgoff,
diff --git a/drivers/md/dm-log-writes.c b/drivers/md/dm-log-writes.c
index df3cd78223fb..1e9847f904ef 100644
--- a/drivers/md/dm-log-writes.c
+++ b/drivers/md/dm-log-writes.c
@@ -959,16 +959,18 @@ static struct dax_device *log_writes_dax_pgoff(struct dm_target *ti,
 }
 
 static long log_writes_dax_direct_access(struct dm_target *ti, pgoff_t pgoff,
-					 long nr_pages, void **kaddr, pfn_t *pfn)
+					 long nr_pages, int mode,
+					 void **kaddr, pfn_t *pfn)
 {
 	struct dax_device *dax_dev = log_writes_dax_pgoff(ti, &pgoff);
 
-	return dax_direct_access(dax_dev, pgoff, nr_pages, kaddr, pfn);
+	return dax_direct_access(dax_dev, pgoff, nr_pages, mode, kaddr, pfn);
 }
 
 static size_t log_writes_dax_copy_from_iter(struct dm_target *ti,
-					    pgoff_t pgoff, void *addr, size_t bytes,
-					    struct iov_iter *i)
+					    pgoff_t pgoff, void *addr,
+					    size_t bytes, struct iov_iter *i,
+					    int mode)
 {
 	struct log_writes_c *lc = ti->private;
 	sector_t sector = pgoff * PAGE_SECTORS;
@@ -985,16 +987,17 @@ static size_t log_writes_dax_copy_from_iter(struct dm_target *ti,
 		return 0;
 	}
 dax_copy:
-	return dax_copy_from_iter(dax_dev, pgoff, addr, bytes, i);
+	return dax_copy_from_iter(dax_dev, pgoff, addr, bytes, i, mode);
 }
 
 static size_t log_writes_dax_copy_to_iter(struct dm_target *ti,
-					  pgoff_t pgoff, void *addr, size_t bytes,
-					  struct iov_iter *i)
+					  pgoff_t pgoff, void *addr,
+					  size_t bytes, struct iov_iter *i,
+					  int mode)
 {
 	struct dax_device *dax_dev = log_writes_dax_pgoff(ti, &pgoff);
 
-	return dax_copy_to_iter(dax_dev, pgoff, addr, bytes, i);
+	return dax_copy_to_iter(dax_dev, pgoff, addr, bytes, i, mode);
 }
 
 static int log_writes_dax_zero_page_range(struct dm_target *ti, pgoff_t pgoff,
diff --git a/drivers/md/dm-stripe.c b/drivers/md/dm-stripe.c
index 50dba3f39274..4c098452268b 100644
--- a/drivers/md/dm-stripe.c
+++ b/drivers/md/dm-stripe.c
@@ -317,27 +317,29 @@ static struct dax_device *stripe_dax_pgoff(struct dm_target *ti, pgoff_t *pgoff)
 }
 
 static long stripe_dax_direct_access(struct dm_target *ti, pgoff_t pgoff,
-		long nr_pages, void **kaddr, pfn_t *pfn)
+		long nr_pages, int mode, void **kaddr, pfn_t *pfn)
 {
 	struct dax_device *dax_dev = stripe_dax_pgoff(ti, &pgoff);
 
-	return dax_direct_access(dax_dev, pgoff, nr_pages, kaddr, pfn);
+	return dax_direct_access(dax_dev, pgoff, nr_pages, mode, kaddr, pfn);
 }
 
 static size_t stripe_dax_copy_from_iter(struct dm_target *ti, pgoff_t pgoff,
-		void *addr, size_t bytes, struct iov_iter *i)
+		void *addr, size_t bytes, struct iov_iter *i,
+		int mode)
 {
 	struct dax_device *dax_dev = stripe_dax_pgoff(ti, &pgoff);
 
-	return dax_copy_from_iter(dax_dev, pgoff, addr, bytes, i);
+	return dax_copy_from_iter(dax_dev, pgoff, addr, bytes, i, mode);
 }
 
 static size_t stripe_dax_copy_to_iter(struct dm_target *ti, pgoff_t pgoff,
-		void *addr, size_t bytes, struct iov_iter *i)
+		void *addr, size_t bytes, struct iov_iter *i,
+		int mode)
 {
 	struct dax_device *dax_dev = stripe_dax_pgoff(ti, &pgoff);
 
-	return dax_copy_to_iter(dax_dev, pgoff, addr, bytes, i);
+	return dax_copy_to_iter(dax_dev, pgoff, addr, bytes, i, mode);
 }
 
 static int stripe_dax_zero_page_range(struct dm_target *ti, pgoff_t pgoff,
diff --git a/drivers/md/dm-target.c b/drivers/md/dm-target.c
index 64dd0b34fcf4..2de1073dbad6 100644
--- a/drivers/md/dm-target.c
+++ b/drivers/md/dm-target.c
@@ -142,7 +142,7 @@ static void io_err_release_clone_rq(struct request *clone,
 }
 
 static long io_err_dax_direct_access(struct dm_target *ti, pgoff_t pgoff,
-		long nr_pages, void **kaddr, pfn_t *pfn)
+		long nr_pages, int mode, void **kaddr, pfn_t *pfn)
 {
 	return -EIO;
 }
diff --git a/drivers/md/dm-writecache.c b/drivers/md/dm-writecache.c
index 0af464a863fe..b2e4ff922fe2 100644
--- a/drivers/md/dm-writecache.c
+++ b/drivers/md/dm-writecache.c
@@ -286,7 +286,8 @@ static int persistent_memory_claim(struct dm_writecache *wc)
 
 	id = dax_read_lock();
 
-	da = dax_direct_access(wc->ssd_dev->dax_dev, offset, p, &wc->memory_map, &pfn);
+	da = dax_direct_access(wc->ssd_dev->dax_dev, offset, p, DAX_OP_NORMAL,
+				&wc->memory_map, &pfn);
 	if (da < 0) {
 		wc->memory_map = NULL;
 		r = da;
@@ -308,8 +309,9 @@ static int persistent_memory_claim(struct dm_writecache *wc)
 		i = 0;
 		do {
 			long daa;
-			daa = dax_direct_access(wc->ssd_dev->dax_dev, offset + i, p - i,
-						NULL, &pfn);
+			daa = dax_direct_access(wc->ssd_dev->dax_dev,
+						offset + i, p - i,
+						DAX_OP_NORMAL, NULL, &pfn);
 			if (daa <= 0) {
 				r = daa ? daa : -EINVAL;
 				goto err3;
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 282008afc465..dc354db22ef9 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -1001,7 +1001,8 @@ static struct dm_target *dm_dax_get_live_target(struct mapped_device *md,
 }
 
 static long dm_dax_direct_access(struct dax_device *dax_dev, pgoff_t pgoff,
-				 long nr_pages, void **kaddr, pfn_t *pfn)
+				 long nr_pages, int mode, void **kaddr,
+				 pfn_t *pfn)
 {
 	struct mapped_device *md = dax_get_private(dax_dev);
 	sector_t sector = pgoff * PAGE_SECTORS;
@@ -1019,7 +1020,7 @@ static long dm_dax_direct_access(struct dax_device *dax_dev, pgoff_t pgoff,
 	if (len < 1)
 		goto out;
 	nr_pages = min(len, nr_pages);
-	ret = ti->type->direct_access(ti, pgoff, nr_pages, kaddr, pfn);
+	ret = ti->type->direct_access(ti, pgoff, nr_pages, mode, kaddr, pfn);
 
  out:
 	dm_put_live_table(md, srcu_idx);
@@ -1028,7 +1029,8 @@ static long dm_dax_direct_access(struct dax_device *dax_dev, pgoff_t pgoff,
 }
 
 static size_t dm_dax_copy_from_iter(struct dax_device *dax_dev, pgoff_t pgoff,
-				    void *addr, size_t bytes, struct iov_iter *i)
+				    void *addr, size_t bytes,
+				    struct iov_iter *i, int mode)
 {
 	struct mapped_device *md = dax_get_private(dax_dev);
 	sector_t sector = pgoff * PAGE_SECTORS;
@@ -1044,7 +1046,7 @@ static size_t dm_dax_copy_from_iter(struct dax_device *dax_dev, pgoff_t pgoff,
 		ret = copy_from_iter(addr, bytes, i);
 		goto out;
 	}
-	ret = ti->type->dax_copy_from_iter(ti, pgoff, addr, bytes, i);
+	ret = ti->type->dax_copy_from_iter(ti, pgoff, addr, bytes, i, mode);
  out:
 	dm_put_live_table(md, srcu_idx);
 
@@ -1052,7 +1054,7 @@ static size_t dm_dax_copy_from_iter(struct dax_device *dax_dev, pgoff_t pgoff,
 }
 
 static size_t dm_dax_copy_to_iter(struct dax_device *dax_dev, pgoff_t pgoff,
-		void *addr, size_t bytes, struct iov_iter *i)
+		void *addr, size_t bytes, struct iov_iter *i, int mode)
 {
 	struct mapped_device *md = dax_get_private(dax_dev);
 	sector_t sector = pgoff * PAGE_SECTORS;
@@ -1068,7 +1070,7 @@ static size_t dm_dax_copy_to_iter(struct dax_device *dax_dev, pgoff_t pgoff,
 		ret = copy_to_iter(addr, bytes, i);
 		goto out;
 	}
-	ret = ti->type->dax_copy_to_iter(ti, pgoff, addr, bytes, i);
+	ret = ti->type->dax_copy_to_iter(ti, pgoff, addr, bytes, i, mode);
  out:
 	dm_put_live_table(md, srcu_idx);
 
diff --git a/drivers/nvdimm/pmem.c b/drivers/nvdimm/pmem.c
index 0d6633987552..3dc99e0bf633 100644
--- a/drivers/nvdimm/pmem.c
+++ b/drivers/nvdimm/pmem.c
@@ -255,7 +255,7 @@ static int pmem_rw_page(struct block_device *bdev, sector_t sector,
 
 /* see "strong" declaration in tools/testing/nvdimm/pmem-dax.c */
 __weak long __pmem_direct_access(struct pmem_device *pmem, pgoff_t pgoff,
-		long nr_pages, void **kaddr, pfn_t *pfn)
+		long nr_pages, int mode, void **kaddr, pfn_t *pfn)
 {
 	resource_size_t offset = PFN_PHYS(pgoff) + pmem->data_offset;
 
@@ -294,11 +294,12 @@ static int pmem_dax_zero_page_range(struct dax_device *dax_dev, pgoff_t pgoff,
 }
 
 static long pmem_dax_direct_access(struct dax_device *dax_dev,
-		pgoff_t pgoff, long nr_pages, void **kaddr, pfn_t *pfn)
+		pgoff_t pgoff, long nr_pages, int mode, void **kaddr,
+		pfn_t *pfn)
 {
 	struct pmem_device *pmem = dax_get_private(dax_dev);
 
-	return __pmem_direct_access(pmem, pgoff, nr_pages, kaddr, pfn);
+	return __pmem_direct_access(pmem, pgoff, nr_pages, mode, kaddr, pfn);
 }
 
 /*
@@ -308,13 +309,13 @@ static long pmem_dax_direct_access(struct dax_device *dax_dev,
  * dax_iomap_actor()
  */
 static size_t pmem_copy_from_iter(struct dax_device *dax_dev, pgoff_t pgoff,
-		void *addr, size_t bytes, struct iov_iter *i)
+		void *addr, size_t bytes, struct iov_iter *i, int mode)
 {
 	return _copy_from_iter_flushcache(addr, bytes, i);
 }
 
 static size_t pmem_copy_to_iter(struct dax_device *dax_dev, pgoff_t pgoff,
-		void *addr, size_t bytes, struct iov_iter *i)
+		void *addr, size_t bytes, struct iov_iter *i, int mode)
 {
 	return _copy_mc_to_iter(addr, bytes, i);
 }
diff --git a/drivers/nvdimm/pmem.h b/drivers/nvdimm/pmem.h
index 59cfe13ea8a8..bda6a898ba81 100644
--- a/drivers/nvdimm/pmem.h
+++ b/drivers/nvdimm/pmem.h
@@ -27,7 +27,7 @@ struct pmem_device {
 };
 
 long __pmem_direct_access(struct pmem_device *pmem, pgoff_t pgoff,
-		long nr_pages, void **kaddr, pfn_t *pfn);
+		long nr_pages, int mode, void **kaddr, pfn_t *pfn);
 
 #ifdef CONFIG_MEMORY_FAILURE
 static inline bool test_and_clear_pmem_poison(struct page *page)
diff --git a/drivers/s390/block/dcssblk.c b/drivers/s390/block/dcssblk.c
index e65e83764d1c..fb9f768e12a1 100644
--- a/drivers/s390/block/dcssblk.c
+++ b/drivers/s390/block/dcssblk.c
@@ -32,7 +32,7 @@ static int dcssblk_open(struct block_device *bdev, fmode_t mode);
 static void dcssblk_release(struct gendisk *disk, fmode_t mode);
 static void dcssblk_submit_bio(struct bio *bio);
 static long dcssblk_dax_direct_access(struct dax_device *dax_dev, pgoff_t pgoff,
-		long nr_pages, void **kaddr, pfn_t *pfn);
+		long nr_pages, int mode, void **kaddr, pfn_t *pfn);
 
 static char dcssblk_segments[DCSSBLK_PARM_LEN] = "\0";
 
@@ -45,13 +45,15 @@ static const struct block_device_operations dcssblk_devops = {
 };
 
 static size_t dcssblk_dax_copy_from_iter(struct dax_device *dax_dev,
-		pgoff_t pgoff, void *addr, size_t bytes, struct iov_iter *i)
+		pgoff_t pgoff, void *addr, size_t bytes, struct iov_iter *i,
+		int mode)
 {
 	return copy_from_iter(addr, bytes, i);
 }
 
 static size_t dcssblk_dax_copy_to_iter(struct dax_device *dax_dev,
-		pgoff_t pgoff, void *addr, size_t bytes, struct iov_iter *i)
+		pgoff_t pgoff, void *addr, size_t bytes, struct iov_iter *i,
+		int mode)
 {
 	return copy_to_iter(addr, bytes, i);
 }
@@ -62,7 +64,8 @@ static int dcssblk_dax_zero_page_range(struct dax_device *dax_dev,
 	long rc;
 	void *kaddr;
 
-	rc = dax_direct_access(dax_dev, pgoff, nr_pages, &kaddr, NULL);
+	rc = dax_direct_access(dax_dev, pgoff, nr_pages, DAX_OP_NORMAL,
+			       &kaddr, NULL);
 	if (rc < 0)
 		return rc;
 	memset(kaddr, 0, nr_pages << PAGE_SHIFT);
@@ -941,7 +944,7 @@ __dcssblk_direct_access(struct dcssblk_dev_info *dev_info, pgoff_t pgoff,
 
 static long
 dcssblk_dax_direct_access(struct dax_device *dax_dev, pgoff_t pgoff,
-		long nr_pages, void **kaddr, pfn_t *pfn)
+		long nr_pages, int mode, void **kaddr, pfn_t *pfn)
 {
 	struct dcssblk_dev_info *dev_info = dax_get_private(dax_dev);
 
diff --git a/fs/dax.c b/fs/dax.c
index eb715363fd66..bea6df1498c3 100644
--- a/fs/dax.c
+++ b/fs/dax.c
@@ -735,7 +735,8 @@ static int copy_cow_page_dax(struct block_device *bdev, struct dax_device *dax_d
 		return rc;
 
 	id = dax_read_lock();
-	rc = dax_direct_access(dax_dev, pgoff, 1, &kaddr, NULL);
+	rc = dax_direct_access(dax_dev, pgoff, 1, DAX_OP_NORMAL, &kaddr,
+			       NULL);
 	if (rc < 0) {
 		dax_read_unlock(id);
 		return rc;
@@ -1036,7 +1037,7 @@ static int dax_iomap_pfn(const struct iomap *iomap, loff_t pos, size_t size,
 		return rc;
 	id = dax_read_lock();
 	length = dax_direct_access(iomap->dax_dev, pgoff, PHYS_PFN(size),
-				   NULL, pfnp);
+				   DAX_OP_NORMAL, NULL, pfnp);
 	if (length < 0) {
 		rc = length;
 		goto out;
@@ -1162,7 +1163,8 @@ s64 dax_iomap_zero(loff_t pos, u64 length, struct iomap *iomap)
 	if (page_aligned)
 		rc = dax_zero_page_range(iomap->dax_dev, pgoff, 1);
 	else
-		rc = dax_direct_access(iomap->dax_dev, pgoff, 1, &kaddr, NULL);
+		rc = dax_direct_access(iomap->dax_dev, pgoff, 1,
+				       DAX_OP_NORMAL, &kaddr, NULL);
 	if (rc < 0) {
 		dax_read_unlock(id);
 		return rc;
@@ -1231,7 +1233,7 @@ static loff_t dax_iomap_iter(const struct iomap_iter *iomi,
 			break;
 
 		map_len = dax_direct_access(dax_dev, pgoff, PHYS_PFN(size),
-				&kaddr, NULL);
+					    DAX_OP_NORMAL, &kaddr, NULL);
 		if (map_len < 0) {
 			ret = map_len;
 			break;
@@ -1250,10 +1252,10 @@ static loff_t dax_iomap_iter(const struct iomap_iter *iomi,
 		 */
 		if (iov_iter_rw(iter) == WRITE)
 			xfer = dax_copy_from_iter(dax_dev, pgoff, kaddr,
-					map_len, iter);
+					map_len, iter, DAX_OP_NORMAL);
 		else
 			xfer = dax_copy_to_iter(dax_dev, pgoff, kaddr,
-					map_len, iter);
+					map_len, iter, DAX_OP_NORMAL);
 
 		pos += xfer;
 		length -= xfer;
diff --git a/fs/fuse/dax.c b/fs/fuse/dax.c
index 713818d74de6..755d8d4b7d34 100644
--- a/fs/fuse/dax.c
+++ b/fs/fuse/dax.c
@@ -1241,8 +1241,8 @@ static int fuse_dax_mem_range_init(struct fuse_conn_dax *fcd)
 	INIT_DELAYED_WORK(&fcd->free_work, fuse_dax_free_mem_worker);
 
 	id = dax_read_lock();
-	nr_pages = dax_direct_access(fcd->dev, 0, PHYS_PFN(dax_size), NULL,
-				     NULL);
+	nr_pages = dax_direct_access(fcd->dev, 0, PHYS_PFN(dax_size),
+				     DAX_OP_NORMAL, NULL, NULL);
 	dax_read_unlock(id);
 	if (nr_pages < 0) {
 		pr_debug("dax_direct_access() returned %ld\n", nr_pages);
diff --git a/fs/fuse/virtio_fs.c b/fs/fuse/virtio_fs.c
index b4c7c7fa987f..fb5433a37a7b 100644
--- a/fs/fuse/virtio_fs.c
+++ b/fs/fuse/virtio_fs.c
@@ -739,7 +739,8 @@ static void virtio_fs_cleanup_vqs(struct virtio_device *vdev,
  * offset.
  */
 static long virtio_fs_direct_access(struct dax_device *dax_dev, pgoff_t pgoff,
-				    long nr_pages, void **kaddr, pfn_t *pfn)
+				    long nr_pages, int mode, void **kaddr,
+				    pfn_t *pfn)
 {
 	struct virtio_fs *fs = dax_get_private(dax_dev);
 	phys_addr_t offset = PFN_PHYS(pgoff);
@@ -755,14 +756,16 @@ static long virtio_fs_direct_access(struct dax_device *dax_dev, pgoff_t pgoff,
 
 static size_t virtio_fs_copy_from_iter(struct dax_device *dax_dev,
 				       pgoff_t pgoff, void *addr,
-				       size_t bytes, struct iov_iter *i)
+				       size_t bytes, struct iov_iter *i,
+				       int mode)
 {
 	return copy_from_iter(addr, bytes, i);
 }
 
 static size_t virtio_fs_copy_to_iter(struct dax_device *dax_dev,
 				       pgoff_t pgoff, void *addr,
-				       size_t bytes, struct iov_iter *i)
+				       size_t bytes, struct iov_iter *i,
+				       int mode)
 {
 	return copy_to_iter(addr, bytes, i);
 }
@@ -773,7 +776,8 @@ static int virtio_fs_zero_page_range(struct dax_device *dax_dev,
 	long rc;
 	void *kaddr;
 
-	rc = dax_direct_access(dax_dev, pgoff, nr_pages, &kaddr, NULL);
+	rc = dax_direct_access(dax_dev, pgoff, nr_pages, DAX_OP_NORMAL,
+			       &kaddr, NULL);
 	if (rc < 0)
 		return rc;
 	memset(kaddr, 0, nr_pages << PAGE_SHIFT);
diff --git a/include/linux/dax.h b/include/linux/dax.h
index 324363b798ec..931586df2905 100644
--- a/include/linux/dax.h
+++ b/include/linux/dax.h
@@ -9,6 +9,10 @@
 /* Flag for synchronous flush */
 #define DAXDEV_F_SYNC (1UL << 0)
 
+/* dax operation mode dynamically set by caller */
+#define	DAX_OP_NORMAL		0
+#define	DAX_OP_RECOVERY		1
+
 typedef unsigned long dax_entry_t;
 
 struct dax_device;
@@ -22,8 +26,8 @@ struct dax_operations {
 	 * logical-page-offset into an absolute physical pfn. Return the
 	 * number of pages available for DAX at that pfn.
 	 */
-	long (*direct_access)(struct dax_device *, pgoff_t, long,
-			void **, pfn_t *);
+	long (*direct_access)(struct dax_device *, pgoff_t, long, int,
+				void **, pfn_t *);
 	/*
 	 * Validate whether this device is usable as an fsdax backing
 	 * device.
@@ -32,10 +36,10 @@ struct dax_operations {
 			sector_t, sector_t);
 	/* 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 *);
+			struct iov_iter *, int);
 	/* copy_to_iter: required operation for fs-dax direct-i/o */
 	size_t (*copy_to_iter)(struct dax_device *, pgoff_t, void *, size_t,
-			struct iov_iter *);
+			struct iov_iter *, int);
 	/* zero_page_range: required operation. Zero page range   */
 	int (*zero_page_range)(struct dax_device *, pgoff_t, size_t);
 };
@@ -186,11 +190,11 @@ static inline void dax_read_unlock(int id)
 bool dax_alive(struct dax_device *dax_dev);
 void *dax_get_private(struct dax_device *dax_dev);
 long dax_direct_access(struct dax_device *dax_dev, pgoff_t pgoff, long nr_pages,
-		void **kaddr, pfn_t *pfn);
+		int mode, 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);
+		size_t bytes, struct iov_iter *i, int mode);
 size_t dax_copy_to_iter(struct dax_device *dax_dev, pgoff_t pgoff, void *addr,
-		size_t bytes, struct iov_iter *i);
+		size_t bytes, struct iov_iter *i, int mode);
 int dax_zero_page_range(struct dax_device *dax_dev, pgoff_t pgoff,
 			size_t nr_pages);
 void dax_flush(struct dax_device *dax_dev, void *addr, size_t size);
diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h
index a7df155ea49b..6596a8e0ceed 100644
--- a/include/linux/device-mapper.h
+++ b/include/linux/device-mapper.h
@@ -146,9 +146,10 @@ typedef int (*dm_busy_fn) (struct dm_target *ti);
  * >= 0 : the number of bytes accessible at the address
  */
 typedef long (*dm_dax_direct_access_fn) (struct dm_target *ti, pgoff_t pgoff,
-		long nr_pages, void **kaddr, pfn_t *pfn);
+		long nr_pages, int mode, void **kaddr, pfn_t *pfn);
 typedef size_t (*dm_dax_copy_iter_fn)(struct dm_target *ti, pgoff_t pgoff,
-		void *addr, size_t bytes, struct iov_iter *i);
+		void *addr, size_t bytes, struct iov_iter *i,
+		int mode);
 typedef int (*dm_dax_zero_page_range_fn)(struct dm_target *ti, pgoff_t pgoff,
 		size_t nr_pages);
 
diff --git a/tools/testing/nvdimm/pmem-dax.c b/tools/testing/nvdimm/pmem-dax.c
index af19c85558e7..71c225630e7e 100644
--- a/tools/testing/nvdimm/pmem-dax.c
+++ b/tools/testing/nvdimm/pmem-dax.c
@@ -8,7 +8,7 @@
 #include <nd.h>
 
 long __pmem_direct_access(struct pmem_device *pmem, pgoff_t pgoff,
-		long nr_pages, void **kaddr, pfn_t *pfn)
+		long nr_pages, int mode, void **kaddr, pfn_t *pfn)
 {
 	resource_size_t offset = PFN_PHYS(pgoff) + pmem->data_offset;
 
