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- Fix a DM multipath regression introduced in a v4.16-rc6 commit:

Browse Source 
restore support for loading, and attaching, scsi_dh modules during
   multipath table load.  Otherwise some users may find themselves unable
   to boot, as was reported today:
   https://marc.info/?l=linux-scsi&m=152231276114962&w=2
 
 - Fix a DM core ioctl permission check regression introduced in a
   v4.16-rc5 commit.
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Merge tag 'for-4.16/dm-fixes-4' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm

Pull device mapper fixes from Mike Snitzer:

 - Fix a DM multipath regression introduced in a v4.16-rc6 commit:
   restore support for loading, and attaching, scsi_dh modules during
   multipath table load. Otherwise some users may find themselves unable
   to boot, as was reported today:

     https://marc.info/?l=linux-scsi&m=152231276114962&w=2

 - Fix a DM core ioctl permission check regression introduced in a
   v4.16-rc5 commit.

* tag 'for-4.16/dm-fixes-4' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
  dm: fix dropped return code from dm_get_bdev_for_ioctl
  dm mpath: fix support for loading scsi_dh modules during table load
This commit is contained in:
Linus Torvalds 2018-03-29 19:27:12 -10:00
commit c2a9838452
2 changed files with 6 additions and 4 deletions
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2
drivers/md/dm-mpath.c
View File

@ -887,7 +887,7 @@ static struct pgpath *parse_path(struct dm_arg_set *as, struct path_selector *ps
q = bdev_get_queue(p->path.dev->bdev);
attached_handler_name = scsi_dh_attached_handler_name(q, GFP_KERNEL);
if (attached_handler_name) {
if (attached_handler_name || m->hw_handler_name) {
INIT_DELAYED_WORK(&p->activate_path, activate_path_work);
r = setup_scsi_dh(p->path.dev->bdev, m, attached_handler_name, &ti->error);
if (r) {

8
drivers/md/dm.c
View File

@ -466,7 +466,7 @@ static int dm_get_bdev_for_ioctl(struct mapped_device *md,
{
struct dm_target *tgt;
struct dm_table *map;
int srcu_idx, r;
int srcu_idx, r, r2;
retry:
r = -ENOTTY;
@ -492,9 +492,11 @@ retry:
goto out;
bdgrab(*bdev);
r = blkdev_get(*bdev, *mode, _dm_claim_ptr);
if (r < 0)
r2 = blkdev_get(*bdev, *mode, _dm_claim_ptr);
if (r2 < 0) {
r = r2;
goto out;
}
dm_put_live_table(md, srcu_idx);
return r;