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iomap: simplify direct io validity check 

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
check, and defer the more invasive segment checks to the block layer.

Signed-off-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Keith Busch 2025-08-27 07:12:55 -07:00 committed by Jens Axboe
parent 5ff3f74e14
commit 7eac331869
1 changed files with 1 additions and 2 deletions
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3
fs/iomap/direct-io.c
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@ -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) {