[PATCH 3/7] block: simplify direct io validity check
From: Keith Busch <hidden>
Date: 2025-08-01 23:47:56
Also in:
linux-fsdevel, lkml
Subsystem:
block layer, the rest · Maintainers:
Jens Axboe, 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> --- block/fops.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/block/fops.c b/block/fops.c
index 82451ac8ff25d..820902cf10730 100644
--- a/block/fops.c
+++ b/block/fops.c@@ -38,8 +38,8 @@ static blk_opf_t dio_bio_write_op(struct kiocb *iocb) static bool blkdev_dio_invalid(struct block_device *bdev, struct kiocb *iocb, struct iov_iter *iter) { - return iocb->ki_pos & (bdev_logical_block_size(bdev) - 1) || - !bdev_iter_is_aligned(bdev, iter); + return (iocb->ki_pos | iov_iter_count(iter)) & + (bdev_logical_block_size(bdev) - 1); } #define DIO_INLINE_BIO_VECS 4
--
2.47.3