diff --git a/fs/dax.c b/fs/dax.c
index 95981591977a..f3afa1d6156c 100644
--- a/fs/dax.c
+++ b/fs/dax.c
@@ -1096,7 +1096,7 @@ static bool dax_fault_is_synchronous(unsigned long flags,
 }
 
 static int dax_iomap_pte_fault(struct vm_fault *vmf, pfn_t *pfnp,
-			       const struct iomap_ops *ops)
+			       int *iomap_errp, const struct iomap_ops *ops)
 {
 	struct vm_area_struct *vma = vmf->vma;
 	struct address_space *mapping = vma->vm_file->f_mapping;
@@ -1149,6 +1149,8 @@ static int dax_iomap_pte_fault(struct vm_fault *vmf, pfn_t *pfnp,
 	 * that we never have to deal with more than a single extent here.
 	 */
 	error = ops->iomap_begin(inode, pos, PAGE_SIZE, flags, &iomap);
+	if (iomap_errp)
+		*iomap_errp = error;
 	if (error) {
 		vmf_ret = dax_fault_return(error);
 		goto unlock_entry;
@@ -1488,6 +1490,7 @@ static int dax_iomap_pmd_fault(struct vm_fault *vmf, pfn_t *pfnp,
  * @vmf: The description of the fault
  * @pe_size: Size of the page to fault in
  * @pfnp: PFN to insert for synchronous faults if fsync is required
+ * @iomap_errp: Storage for detailed error code in case of error
  * @ops: Iomap ops passed from the file system
  *
  * When a page fault occurs, filesystems may call this helper in
@@ -1496,11 +1499,11 @@ static int dax_iomap_pmd_fault(struct vm_fault *vmf, pfn_t *pfnp,
  * successfully.
  */
 int dax_iomap_fault(struct vm_fault *vmf, enum page_entry_size pe_size,
-		    pfn_t *pfnp, const struct iomap_ops *ops)
+		    pfn_t *pfnp, int *iomap_errp, const struct iomap_ops *ops)
 {
 	switch (pe_size) {
 	case PE_SIZE_PTE:
-		return dax_iomap_pte_fault(vmf, pfnp, ops);
+		return dax_iomap_pte_fault(vmf, pfnp, iomap_errp, ops);
 	case PE_SIZE_PMD:
 		return dax_iomap_pmd_fault(vmf, pfnp, ops);
 	default:
diff --git a/fs/ext2/file.c b/fs/ext2/file.c
index 2da67699dc33..09640220fda8 100644
--- a/fs/ext2/file.c
+++ b/fs/ext2/file.c
@@ -100,7 +100,7 @@ static int ext2_dax_fault(struct vm_fault *vmf)
 	}
 	down_read(&ei->dax_sem);
 
-	ret = dax_iomap_fault(vmf, PE_SIZE_PTE, NULL, &ext2_iomap_ops);
+	ret = dax_iomap_fault(vmf, PE_SIZE_PTE, NULL, NULL, &ext2_iomap_ops);
 
 	up_read(&ei->dax_sem);
 	if (vmf->flags & FAULT_FLAG_WRITE)
diff --git a/fs/ext4/file.c b/fs/ext4/file.c
index a0ae27b1bc66..1c7cd882d998 100644
--- a/fs/ext4/file.c
+++ b/fs/ext4/file.c
@@ -314,7 +314,7 @@ static int ext4_dax_huge_fault(struct vm_fault *vmf,
 	} else {
 		down_read(&EXT4_I(inode)->i_mmap_sem);
 	}
-	result = dax_iomap_fault(vmf, pe_size, &pfn, &ext4_iomap_ops);
+	result = dax_iomap_fault(vmf, pe_size, &pfn, NULL, &ext4_iomap_ops);
 	if (write) {
 		ext4_journal_stop(handle);
 		/* Handling synchronous page fault? */
diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c
index 8601275cc5e6..9ea08326f876 100644
--- a/fs/xfs/xfs_file.c
+++ b/fs/xfs/xfs_file.c
@@ -1048,7 +1048,7 @@ __xfs_filemap_fault(
 	if (IS_DAX(inode)) {
 		pfn_t pfn;
 
-		ret = dax_iomap_fault(vmf, pe_size, &pfn, &xfs_iomap_ops);
+		ret = dax_iomap_fault(vmf, pe_size, &pfn, NULL, &xfs_iomap_ops);
 		if (ret & VM_FAULT_NEEDDSYNC)
 			ret = dax_finish_sync_fault(vmf, pe_size, pfn);
 	} else {
diff --git a/include/linux/dax.h b/include/linux/dax.h
index 5258346c558c..0185ecdae135 100644
--- a/include/linux/dax.h
+++ b/include/linux/dax.h
@@ -96,7 +96,7 @@ bool dax_write_cache_enabled(struct dax_device *dax_dev);
 ssize_t dax_iomap_rw(struct kiocb *iocb, struct iov_iter *iter,
 		const struct iomap_ops *ops);
 int dax_iomap_fault(struct vm_fault *vmf, enum page_entry_size pe_size,
-		    pfn_t *pfnp, const struct iomap_ops *ops);
+		    pfn_t *pfnp, int *errp, const struct iomap_ops *ops);
 int dax_finish_sync_fault(struct vm_fault *vmf, enum page_entry_size pe_size,
 			  pfn_t pfn);
 int dax_delete_mapping_entry(struct address_space *mapping, pgoff_t index);