if ((sector | nr_sects) & bs_mask)
return -EINVAL;
- while (nr_sects) {
- unsigned int req_sects = nr_sects;
- sector_t end_sect;
+ if (!nr_sects)
+ return -EINVAL;
- if (!req_sects)
- goto fail;
- if (req_sects > UINT_MAX >> 9)
- req_sects = UINT_MAX >> 9;
+ while (nr_sects) {
+ sector_t req_sects = min_t(sector_t, nr_sects,
+ bio_allowed_max_sectors(q));
- end_sect = sector + req_sects;
+ WARN_ON_ONCE((req_sects << 9) > UINT_MAX);
bio = blk_next_bio(bio, 0, gfp_mask);
bio->bi_iter.bi_sector = 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
*biop = bio;
return 0;
-
-fail:
- if (bio) {
- submit_bio_wait(bio);
- bio_put(bio);
- }
- *biop = NULL;
- return -EOPNOTSUPP;
}
EXPORT_SYMBOL(__blkdev_issue_discard);
return -EOPNOTSUPP;
/* Ensure that max_write_same_sectors doesn't overflow bi_size */
- max_write_same_sectors = UINT_MAX >> 9;
+ max_write_same_sectors = bio_allowed_max_sectors(q);
while (nr_sects) {
bio = blk_next_bio(bio, 1, gfp_mask);