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block-6.0-2022-09-16

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Merge tag 'block-6.0-2022-09-16' of git://git.kernel.dk/linux-block

Pull block fixes from Jens Axboe:
 "Two fixes for -rc6:

   - Fix a mixup of sectors and bytes in the secure erase ioctl
     (Mikulas)

   - Fix for a bad return value for a non-blocking bio/blk queue enter
     call (me)"

* tag 'block-6.0-2022-09-16' of git://git.kernel.dk/linux-block:
  blk-lib: fix blkdev_issue_secure_erase
  block: blk_queue_enter() / __bio_queue_enter() must return -EAGAIN for nowait
This commit is contained in:
Linus Torvalds 2022-09-16 06:58:04 -07:00
commit 68e777e44c
2 changed files with 10 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
block/blk-core.c
View File

@ -295,7 +295,7 @@ int blk_queue_enter(struct request_queue *q, blk_mq_req_flags_t flags)
while (!blk_try_enter_queue(q, pm)) {
if (flags & BLK_MQ_REQ_NOWAIT)
return -EBUSY;
return -EAGAIN;
/*
* read pair of barrier in blk_freeze_queue_start(), we need to
@ -325,7 +325,7 @@ int __bio_queue_enter(struct request_queue *q, struct bio *bio)
if (test_bit(GD_DEAD, &disk->state))
goto dead;
bio_wouldblock_error(bio);
return -EBUSY;
return -EAGAIN;
}
/*

11
block/blk-lib.c
View File

@ -309,6 +309,11 @@ int blkdev_issue_secure_erase(struct block_device *bdev, sector_t sector,
struct blk_plug plug;
int ret = 0;
/* make sure that "len << SECTOR_SHIFT" doesn't overflow */
if (max_sectors > UINT_MAX >> SECTOR_SHIFT)
max_sectors = UINT_MAX >> SECTOR_SHIFT;
max_sectors &= ~bs_mask;
if (max_sectors == 0)
return -EOPNOTSUPP;
if ((sector | nr_sects) & bs_mask)
@ -322,10 +327,10 @@ int blkdev_issue_secure_erase(struct block_device *bdev, sector_t sector,
bio = blk_next_bio(bio, bdev, 0, REQ_OP_SECURE_ERASE, gfp);
bio->bi_iter.bi_sector = sector;
bio->bi_iter.bi_size = len;
bio->bi_iter.bi_size = len << SECTOR_SHIFT;
sector += len << SECTOR_SHIFT;
nr_sects -= len << SECTOR_SHIFT;
sector += len;
nr_sects -= len;
if (!nr_sects) {
ret = submit_bio_wait(bio);
bio_put(bio);