Convert ext4 iomap_ops to the new ->iomap_next() callback. This uses the
iomap_process() helper, which finishes the previous mapping if needed
and produces the next one. No functional changes are intended.

Signed-off-by: Joanne Koong <joannelkoong@gmail.com>
---
 fs/ext4/extents.c |  8 +++++++-
 fs/ext4/inode.c   | 17 +++++++++++++++--
 2 files changed, 22 insertions(+), 3 deletions(-)

diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index 91c97af64b31..431298eca7e8 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -5171,8 +5171,14 @@ static int ext4_iomap_xattr_begin(struct inode *inode, loff_t offset,
 	return error;
 }
 
+static int ext4_iomap_xattr_next(const struct iomap_iter *iter,
+				 struct iomap *iomap, struct iomap *srcmap)
+{
+	return iomap_process(iter, iomap, srcmap, ext4_iomap_xattr_begin, NULL);
+}
+
 static const struct iomap_ops ext4_iomap_xattr_ops = {
-	.iomap_begin		= ext4_iomap_xattr_begin,
+	.iomap_next		= ext4_iomap_xattr_next,
 };
 
 static int ext4_fiemap_check_ranges(struct inode *inode, u64 start, u64 *len)
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index ce99807c5f5b..cf7aa8275651 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -3850,8 +3850,14 @@ static int ext4_iomap_begin(struct inode *inode, loff_t offset, loff_t length,
 	return 0;
 }
 
+static int ext4_iomap_next(const struct iomap_iter *iter, struct iomap *iomap,
+			   struct iomap *srcmap)
+{
+	return iomap_process(iter, iomap, srcmap, ext4_iomap_begin, NULL);
+}
+
 const struct iomap_ops ext4_iomap_ops = {
-	.iomap_begin		= ext4_iomap_begin,
+	.iomap_next		= ext4_iomap_next,
 };
 
 static int ext4_iomap_begin_report(struct inode *inode, loff_t offset,
@@ -3905,8 +3911,15 @@ static int ext4_iomap_begin_report(struct inode *inode, loff_t offset,
 	return 0;
 }
 
+static int ext4_iomap_next_report(const struct iomap_iter *iter,
+				  struct iomap *iomap, struct iomap *srcmap)
+{
+	return iomap_process(iter, iomap, srcmap, ext4_iomap_begin_report,
+			     NULL);
+}
+
 const struct iomap_ops ext4_iomap_report_ops = {
-	.iomap_begin = ext4_iomap_begin_report,
+	.iomap_next = ext4_iomap_next_report,
 };
 
 /*
-- 
2.52.0