[PATCH 10/15] iomap: only call into ->submit_read when there is a read_ctx

[Christoph Hellwig <hch@lst.de>]

Move the NULL check into the callers to simplify the callees.  Not sure
how fuse worked before, given that it was missing the NULL check.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 fs/iomap/bio.c         | 5 +----
 fs/iomap/buffered-io.c | 4 ++--
 2 files changed, 3 insertions(+), 6 deletions(-)

diff --git a/fs/iomap/bio.c b/fs/iomap/bio.c
index cb60d1facb5a..80bbd328bd3c 100644
--- a/fs/iomap/bio.c
+++ b/fs/iomap/bio.c
@@ -21,10 +21,7 @@ static void iomap_read_end_io(struct bio *bio)
 static void iomap_bio_submit_read(const struct iomap_iter *iter,
 		struct iomap_read_folio_ctx *ctx)
 {
-	struct bio *bio = ctx->read_ctx;
-
-	if (bio)
-		submit_bio(bio);
+	submit_bio(ctx->read_ctx);
 }
 
 static void iomap_read_alloc_bio(const struct iomap_iter *iter,
diff --git a/fs/iomap/buffered-io.c b/fs/iomap/buffered-io.c
index 4a15c6c153c4..6367f7f38f0c 100644
--- a/fs/iomap/buffered-io.c
+++ b/fs/iomap/buffered-io.c
@@ -572,7 +572,7 @@ void iomap_read_folio(const struct iomap_ops *ops,
 		iter.status = iomap_read_folio_iter(&iter, ctx,
 				&bytes_submitted);
 
-	if (ctx->ops->submit_read)
+	if (ctx->read_ctx && ctx->ops->submit_read)
 		ctx->ops->submit_read(&iter, ctx);
 
 	iomap_read_end(folio, bytes_submitted);
@@ -636,7 +636,7 @@ void iomap_readahead(const struct iomap_ops *ops,
 		iter.status = iomap_readahead_iter(&iter, ctx,
 					&cur_bytes_submitted);
 
-	if (ctx->ops->submit_read)
+	if (ctx->read_ctx && ctx->ops->submit_read)
 		ctx->ops->submit_read(&iter, ctx);
 
 	if (ctx->cur_folio)
-- 
2.47.3