linux-next: build failure after merge of the block tree

Mark Brown <[email protected]> Mon, 3 Aug 2026 17:52:35 +0100
Newsgroups	gmane.linux.kernel,gmane.linux.kernel.next
Message-ID	<[email protected]>
Hi all,

After merging the block tree, today's linux-next build
(arm64 allnoconfig) failed like this:

/tmp/next/build/fs/iomap/direct-io.c: In function '__iomap_dio_read_simple':
/tmp/next/build/fs/iomap/direct-io.c:1037:15: error: too few arguments to function 'bio_iov_iter_get_pages'
 1037 |         ret = bio_iov_iter_get_pages(bio, iter, alignment - 1);
      |               ^~~~~~~~~~~~~~~~~~~~~~
In file included from /tmp/next/build/include/linux/bio-integrity.h:5,
                 from /tmp/next/build/fs/iomap/direct-io.c:6:
/tmp/next/build/include/linux/bio.h:524:5: note: declared here
  524 | int bio_iov_iter_get_pages(struct bio *bio, struct iov_iter *iter,
      |     ^~~~~~~~~~~~~~~~~~~~~~

caused by a sematic conflict between

  14b007e178811 (block: validate user space vectors during extraction)

from the block tree and

  36f199c8d0ee4 (iomap: add simple dio path for small direct I/O)

from the vfs-brauner tree.  I have applied the fixup patch below and can
carry as needed, you should ensure you flag this to Linus when sending
PRs:

From 5bf17d9828d05688ad4fd04cc07b64642d4ba295 Mon Sep 17 00:00:00 2001
From: Mark Brown <[email protected]>
Date: Mon, 3 Aug 2026 15:53:13 +0100
Subject: [PATCH] fs: Fix up semantic conflict with bio_iov_iter_get_pages

/tmp/next/build/fs/iomap/direct-io.c: In function '__iomap_dio_read_simple':
/tmp/next/build/fs/iomap/direct-io.c:1037:15: error: too few arguments to function 'bio_iov_iter_get_pages'
 1037 |         ret = bio_iov_iter_get_pages(bio, iter, alignment - 1);
      |               ^~~~~~~~~~~~~~~~~~~~~~
In file included from /tmp/next/build/include/linux/bio-integrity.h:5,
                 from /tmp/next/build/fs/iomap/direct-io.c:6:
/tmp/next/build/include/linux/bio.h:524:5: note: declared here
  524 | int bio_iov_iter_get_pages(struct bio *bio, struct iov_iter *iter,
      |     ^~~~~~~~~~~~~~~~~~~~~~

Signed-off-by: Mark Brown <[email protected]>
---
 fs/iomap/direct-io.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/fs/iomap/direct-io.c b/fs/iomap/direct-io.c
index 2b3e916dedc77..2aa71be36c996 100644
--- a/fs/iomap/direct-io.c
+++ b/fs/iomap/direct-io.c
@@ -1034,7 +1034,8 @@ ssize_t __iomap_dio_read_simple(struct kiocb *iocb, struct iov_iter *iter,
 	bio->bi_iter.bi_sector = iomap_sector(&iomi->iomap, iomi->pos);
 	bio->bi_ioprio = iocb->ki_ioprio;
 
-	ret = bio_iov_iter_get_pages(bio, iter, alignment - 1);
+	ret = bio_iov_iter_get_pages(bio, iter, bdev_dma_alignment(bio->bi_bdev),
+				     alignment - 1);
 	if (unlikely(ret))
 		goto out_bio_put;
 
-- 
2.47.3
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