A direct I/O alignment must be always checked against the device blocks size,
but the I/O offset (bio->bi_iter.bi_sector must always use 512B sector unit, and
not the actual logical block size.
Signed-off-by: Damien Le Moal <damien.lemoal@xxxxxxx>
---
fs/block_dev.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/fs/block_dev.c b/fs/block_dev.c
index 35cc494..e49fb79 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -226,7 +226,7 @@ __blkdev_direct_IO_simple(struct kiocb *iocb, struct iov_iter *iter,
bio.bi_max_vecs = nr_pages;
bio.bi_io_vec = vecs;
bio.bi_bdev = bdev;
- bio.bi_iter.bi_sector = pos >> blkbits;
+ bio.bi_iter.bi_sector = pos >> 9;
bio.bi_private = current;
bio.bi_end_io = blkdev_bio_end_io_simple;
@@ -358,7 +358,7 @@ __blkdev_direct_IO(struct kiocb *iocb, struct iov_iter *iter, int nr_pages)
for (;;) {
bio->bi_bdev = bdev;
- bio->bi_iter.bi_sector = pos >> blkbits;
+ bio->bi_iter.bi_sector = pos >> 9;
bio->bi_private = dio;
bio->bi_end_io = blkdev_bio_end_io;
--
2.7.4
--
To unsubscribe from this list: send the line "unsubscribe linux-block" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
