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dm: small cleanup in dm_get_md() 

Makes dm_get_md() and dm_get_from_kobject() have similar code.

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
This commit is contained in:
Mike Snitzer 2017-11-06 16:40:10 -05:00
parent b9a41d21dc
commit 49de576970
1 changed files with 5 additions and 10 deletions
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15
drivers/md/dm.c
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@ -2074,17 +2074,12 @@ struct mapped_device *dm_get_md(dev_t dev)
spin_lock(&_minor_lock); spin_lock(&_minor_lock);
md = idr_find(&_minor_idr, minor); md = idr_find(&_minor_idr, minor);
if (md) { if (!md || md == MINOR_ALLOCED || (MINOR(disk_devt(dm_disk(md))) != minor) ||
if ((md == MINOR_ALLOCED || test_bit(DMF_FREEING, &md->flags) || dm_deleting_md(md)) {
(MINOR(disk_devt(dm_disk(md))) != minor) || md = NULL;
dm_deleting_md(md) || goto out;
test_bit(DMF_FREEING, &md->flags))) {
md = NULL;
goto out;
}
dm_get(md);
} }
dm_get(md);
out: out:
spin_unlock(&_minor_lock); spin_unlock(&_minor_lock);