[PATCH 4/7] iomap: simplify direct io validity check
From: Keith Busch <hidden>
Date: 2025-08-01 23:47:52
Also in:
linux-fsdevel, lkml
Subsystem:
filesystems (vfs and infrastructure), filesystems [iomap], the rest · Maintainers:
Alexander Viro, Christian Brauner, Linus Torvalds
From: Keith Busch <kbusch@kernel.org> The block layer checks all the segments for validity later, so no need for an early check. Just reduce it to a simple position and total length and defer the segment checks to the block layer. Signed-off-by: Keith Busch <kbusch@kernel.org> --- fs/iomap/direct-io.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/fs/iomap/direct-io.c b/fs/iomap/direct-io.c
index 6f25d4cfea9f7..2c1a45e46dc75 100644
--- a/fs/iomap/direct-io.c
+++ b/fs/iomap/direct-io.c@@ -337,8 +337,7 @@ static int iomap_dio_bio_iter(struct iomap_iter *iter, struct iomap_dio *dio) u64 copied = 0; size_t orig_count; - if ((pos | length) & (bdev_logical_block_size(iomap->bdev) - 1) || - !bdev_iter_is_aligned(iomap->bdev, dio->submit.iter)) + if ((pos | length) & (bdev_logical_block_size(iomap->bdev) - 1)) return -EINVAL; if (dio->flags & IOMAP_DIO_WRITE) {
--
2.47.3