leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Merge tag 'block-5.13-2021-05-22' of git://git.kernel.dk/linux-block

Browse Source 
Pull block fixes from Jens Axboe:

 - Fix BLKRRPART and deletion race (Gulam, Christoph)

 - NVMe pull request (Christoph):
      - nvme-tcp corruption and timeout fixes (Sagi Grimberg, Keith
        Busch)
      - nvme-fc teardown fix (James Smart)
      - nvmet/nvme-loop memory leak fixes (Wu Bo)"

* tag 'block-5.13-2021-05-22' of git://git.kernel.dk/linux-block:
  block: fix a race between del_gendisk and BLKRRPART
  block: prevent block device lookups at the beginning of del_gendisk
  nvme-fc: clear q_live at beginning of association teardown
  nvme-tcp: rerun io_work if req_list is not empty
  nvme-tcp: fix possible use-after-completion
  nvme-loop: fix memory leak in nvme_loop_create_ctrl()
  nvmet: fix memory leak in nvmet_alloc_ctrl()
This commit is contained in:
Linus Torvalds
2021-05-22 07:40:34 -10:00
parent b9231dfbcb bc6a385132
commit 4ff2473bdb
7 changed files with 28 additions and 26 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
fs/block_dev.c
View File

@@ -1244,6 +1244,9 @@ int bdev_disk_changed(struct block_device *bdev, bool invalidate)
lockdep_assert_held(&bdev->bd_mutex);
if (!(disk->flags & GENHD_FL_UP))
return -ENXIO;
rescan:
if (bdev->bd_part_count)
return -EBUSY;
@@ -1298,6 +1301,9 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode)
struct gendisk *disk = bdev->bd_disk;
int ret = 0;
if (!(disk->flags & GENHD_FL_UP))
return -ENXIO;
if (!bdev->bd_openers) {
if (!bdev_is_partition(bdev)) {
ret = 0;
@@ -1332,8 +1338,7 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode)
whole->bd_part_count++;
mutex_unlock(&whole->bd_mutex);
if (!(disk->flags & GENHD_FL_UP) ||
!bdev_nr_sectors(bdev)) {
if (!bdev_nr_sectors(bdev)) {
__blkdev_put(whole, mode, 1);
bdput(whole);
return -ENXIO;
@@ -1364,16 +1369,12 @@ struct block_device *blkdev_get_no_open(dev_t dev)
struct block_device *bdev;
struct gendisk *disk;
down_read(&bdev_lookup_sem);
bdev = bdget(dev);
if (!bdev) {
up_read(&bdev_lookup_sem);
blk_request_module(dev);
down_read(&bdev_lookup_sem);
bdev = bdget(dev);
if (!bdev)
goto unlock;
return NULL;
}
disk = bdev->bd_disk;
@@ -1383,14 +1384,11 @@ struct block_device *blkdev_get_no_open(dev_t dev)
goto put_disk;
if (!try_module_get(bdev->bd_disk->fops->owner))
goto put_disk;
up_read(&bdev_lookup_sem);
return bdev;
put_disk:
put_disk(disk);
bdput:
bdput(bdev);
unlock:
up_read(&bdev_lookup_sem);
return NULL;
}