Commit ba5d7385 authored by Ming Lei's avatar Ming Lei Committed by Jens Axboe

block: cleanup __blkdev_issue_discard()

Cleanup __blkdev_issue_discard() a bit:

- remove local variable of 'end_sect'
- remove code block of 'fail'

Cc: Mike Snitzer <snitzer@redhat.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Xiao Ni <xni@redhat.com>
Cc: Mariusz Dabrowski <mariusz.dabrowski@intel.com>
Tested-by: 's avatarRui Salvaterra <rsalvaterra@gmail.com>
Signed-off-by: 's avatarMing Lei <ming.lei@redhat.com>
Signed-off-by: 's avatarJens Axboe <axboe@kernel.dk>
parent 1adfc5e4
......@@ -51,15 +51,12 @@ int __blkdev_issue_discard(struct block_device *bdev, sector_t sector,
if ((sector | nr_sects) & bs_mask)
return -EINVAL;
while (nr_sects) {
unsigned int req_sects = nr_sects;
sector_t end_sect;
if (!req_sects)
goto fail;
req_sects = min(req_sects, bio_allowed_max_sectors(q));
if (!nr_sects)
return -EINVAL;
end_sect = sector + req_sects;
while (nr_sects) {
unsigned int req_sects = min_t(unsigned int, nr_sects,
bio_allowed_max_sectors(q));
bio = blk_next_bio(bio, 0, gfp_mask);
bio->bi_iter.bi_sector = sector;
......@@ -67,8 +64,8 @@ int __blkdev_issue_discard(struct block_device *bdev, sector_t sector,
bio_set_op_attrs(bio, op, 0);
bio->bi_iter.bi_size = req_sects << 9;
sector += req_sects;
nr_sects -= req_sects;
sector = end_sect;
/*
* We can loop for a long time in here, if someone does
......@@ -81,14 +78,6 @@ int __blkdev_issue_discard(struct block_device *bdev, sector_t sector,
*biop = bio;
return 0;
fail:
if (bio) {
submit_bio_wait(bio);
bio_put(bio);
}
*biop = NULL;
return -EOPNOTSUPP;
}
EXPORT_SYMBOL(__blkdev_issue_discard);
......
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