[PATCH v4 19/21] iomap: remove ->iomap_begin()/->iomap_end() legacy path

[Joanne Koong <joannelkoong@gmail.com>]

With all in-tree filesystems implementing ->iomap_next(), drop the
->iomap_begin()/->iomap_end() path.

Reviewed-by: Fengnan Chang <changfengnan@bytedance.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: "Darrick J. Wong" <djwong@kernel.org>
Signed-off-by: Joanne Koong <joannelkoong@gmail.com>
---
 fs/iomap/iter.c       | 6 +-----
 include/linux/iomap.h | 6 ++----
 2 files changed, 3 insertions(+), 9 deletions(-)

diff --git a/fs/iomap/iter.c b/fs/iomap/iter.c
index e05574602946..f7c4d5cf56be 100644
--- a/fs/iomap/iter.c
+++ b/fs/iomap/iter.c
@@ -107,11 +107,7 @@ int iomap_iter(struct iomap_iter *iter, const struct iomap_ops *ops)
 
 	trace_iomap_iter(iter, ops, _RET_IP_);
 
-	if (ops->iomap_next)
-		ret = ops->iomap_next(iter, &iter->iomap, &iter->srcmap);
-	else
-		ret = iomap_iter_next(iter, &iter->iomap, &iter->srcmap,
-				ops->iomap_begin, ops->iomap_end);
+	ret = ops->iomap_next(iter, &iter->iomap, &iter->srcmap);
 
 	iter->status = 0;
 	if (ret > 0)
diff --git a/include/linux/iomap.h b/include/linux/iomap.h
index d203d9fe0f89..0bc1beb47a09 100644
--- a/include/linux/iomap.h
+++ b/include/linux/iomap.h
@@ -195,7 +195,7 @@ struct iomap_write_ops {
 };
 
 /*
- * Flags for iomap_begin / iomap_end.  No flag implies a read.
+ * Flags for iomap_next.  No flag implies a read.
  */
 #define IOMAP_WRITE		(1 << 0) /* writing, must allocate blocks */
 #define IOMAP_ZERO		(1 << 1) /* zeroing operation, may skip holes */
@@ -240,8 +240,6 @@ typedef int (*iomap_iter_next_fn)(const struct iomap_iter *iter,
 		struct iomap *iomap, struct iomap *srcmap);
 
 struct iomap_ops {
-	iomap_iter_begin_fn iomap_begin;
-	iomap_iter_end_fn iomap_end;
 	iomap_iter_next_fn iomap_next;
 };
 
@@ -256,7 +254,7 @@ struct iomap_ops {
  *	incremental iter advance.
  * @status: Status of the most recent iteration. Zero on success or a negative
  *	errno on error.
- * @flags: Zero or more of the iomap_begin flags above.
+ * @flags: Zero or more of the iomap_next flags above.
  * @iomap: Map describing the I/O iteration
  * @srcmap: Source map for COW operations
  */
-- 
2.52.0