diff mbox series

[3/3] block: convert fops.c magic constants to SHIFT_SECTOR

Message ID 068782b9f7e97569fb59a99529b23bb17ea4c5e2.1634755800.git.asml.silence@gmail.com (mailing list archive)
State New, archived
Headers show
Series random simple block cleanups | expand

Commit Message

Pavel Begunkov Oct. 20, 2021, 7 p.m. UTC 
Don't use shifting by a magic number 9 but replace with a more
descriptive SHIFT_SECTOR.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
---
 block/fops.c | 18 ++++++++++--------
 1 file changed, 10 insertions(+), 8 deletions(-)

Comments

Christoph Hellwig Oct. 21, 2021, 8:31 a.m. UTC | #1 
On Wed, Oct 20, 2021 at 08:00:50PM +0100, Pavel Begunkov wrote:
> Don't use shifting by a magic number 9 but replace with a more
> descriptive SHIFT_SECTOR.
> 
> Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>

Looks good,

Reviewed-by: Christoph Hellwig <hch@lst.de>

Although I wonder if two new local variables in blkdev_fallocate
wouldn't be even better..
diff mbox series

Patch

diff --git a/block/fops.c b/block/fops.c
index 8f733c919ed1..396537598e3e 100644
--- a/block/fops.c
+++ b/block/fops.c
@@ -76,7 +76,7 @@  static ssize_t __blkdev_direct_IO_simple(struct kiocb *iocb,
 
 	bio_init(&bio, vecs, nr_pages);
 	bio_set_dev(&bio, bdev);
-	bio.bi_iter.bi_sector = pos >> 9;
+	bio.bi_iter.bi_sector = pos >> SECTOR_SHIFT;
 	bio.bi_write_hint = iocb->ki_hint;
 	bio.bi_private = current;
 	bio.bi_end_io = blkdev_bio_end_io_simple;
@@ -225,7 +225,7 @@  static ssize_t __blkdev_direct_IO(struct kiocb *iocb, struct iov_iter *iter,
 
 	for (;;) {
 		bio_set_dev(bio, bdev);
-		bio->bi_iter.bi_sector = pos >> 9;
+		bio->bi_iter.bi_sector = pos >> SECTOR_SHIFT;
 		bio->bi_write_hint = iocb->ki_hint;
 		bio->bi_private = dio;
 		bio->bi_end_io = blkdev_bio_end_io;
@@ -565,16 +565,18 @@  static long blkdev_fallocate(struct file *file, int mode, loff_t start,
 	switch (mode) {
 	case FALLOC_FL_ZERO_RANGE:
 	case FALLOC_FL_ZERO_RANGE | FALLOC_FL_KEEP_SIZE:
-		error = blkdev_issue_zeroout(bdev, start >> 9, len >> 9,
-					    GFP_KERNEL, BLKDEV_ZERO_NOUNMAP);
+		error = blkdev_issue_zeroout(bdev, start >> SECTOR_SHIFT,
+					     len >> SECTOR_SHIFT, GFP_KERNEL,
+					     BLKDEV_ZERO_NOUNMAP);
 		break;
 	case FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE:
-		error = blkdev_issue_zeroout(bdev, start >> 9, len >> 9,
-					     GFP_KERNEL, BLKDEV_ZERO_NOFALLBACK);
+		error = blkdev_issue_zeroout(bdev, start >> SECTOR_SHIFT,
+					     len >> SECTOR_SHIFT, GFP_KERNEL,
+					     BLKDEV_ZERO_NOFALLBACK);
 		break;
 	case FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE | FALLOC_FL_NO_HIDE_STALE:
-		error = blkdev_issue_discard(bdev, start >> 9, len >> 9,
-					     GFP_KERNEL, 0);
+		error = blkdev_issue_discard(bdev, start >> SECTOR_SHIFT,
+					     len >> SECTOR_SHIFT, GFP_KERNEL, 0);
 		break;
 	default:
 		error = -EOPNOTSUPP;