diff options
| author | Keith Busch <kbusch@kernel.org> | 2022-06-10 21:58:30 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2022-06-27 14:29:11 +0200 |
| commit | bf8d08532bc19a14cfb54ae61099dccadefca446 (patch) | |
| tree | f30d21fa72dc1d8616119dc9d741d8638984e668 /fs/iomap | |
| parent | block: relax direct io memory alignment (diff) | |
| download | linux-bf8d08532bc19a14cfb54ae61099dccadefca446.tar.xz linux-bf8d08532bc19a14cfb54ae61099dccadefca446.zip | |
iomap: add support for dma aligned direct-io
Use the address alignment requirements from the block_device for direct
io instead of requiring addresses be aligned to the block size.
Signed-off-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20220610195830.3574005-12-kbusch@fb.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'fs/iomap')
| -rw-r--r-- | fs/iomap/direct-io.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/iomap/direct-io.c b/fs/iomap/direct-io.c index 370c3241618a..5d098adba443 100644 --- a/fs/iomap/direct-io.c +++ b/fs/iomap/direct-io.c @@ -242,7 +242,6 @@ static loff_t iomap_dio_bio_iter(const struct iomap_iter *iter, struct inode *inode = iter->inode; unsigned int blkbits = blksize_bits(bdev_logical_block_size(iomap->bdev)); unsigned int fs_block_size = i_blocksize(inode), pad; - unsigned int align = iov_iter_alignment(dio->submit.iter); loff_t length = iomap_length(iter); loff_t pos = iter->pos; unsigned int bio_opf; @@ -253,7 +252,8 @@ static loff_t iomap_dio_bio_iter(const struct iomap_iter *iter, size_t copied = 0; size_t orig_count; - if ((pos | length | align) & ((1 << blkbits) - 1)) + if ((pos | length) & ((1 << blkbits) - 1) || + !bdev_iter_is_aligned(iomap->bdev, dio->submit.iter)) return -EINVAL; if (iomap->type == IOMAP_UNWRITTEN) { |