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| author |   zhong jiang <zhongjiang@huawei.com> | 2019-04-18 17:50:16 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2019-04-19 09:46:04 -0700 |
| commit | 37803841c92d7b327147e0b1be3436423189e1cf (patch) | |
| tree | 57aa6d5f861fb1d5908a047583d1cec294f192f3 /mm/vmstat.c | |
| parent | mm: swapoff: shmem_unuse() stop eviction without igrab() (diff) | |
| download | linux-dev-37803841c92d7b327147e0b1be3436423189e1cf.tar.xz linux-dev-37803841c92d7b327147e0b1be3436423189e1cf.zip | |
mm/memory_hotplug: do not unlock after failing to take the device_hotplug_lock
When adding memory by probing a memory block in the sysfs interface,
there is an obvious issue where we will unlock the device_hotplug_lock
when we failed to takes it.
That issue was introduced in 8df1d0e4a265 ("mm/memory_hotplug: make
add_memory() take the device_hotplug_lock").
We should drop out in time when failing to take the device_hotplug_lock.
Link: http://lkml.kernel.org/r/1554696437-9593-1-git-send-email-zhongjiang@huawei.com
Fixes: 8df1d0e4a265 ("mm/memory_hotplug: make add_memory() take the device_hotplug_lock")
Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Reported-by: Yang yingliang <yangyingliang@huawei.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Oscar Salvador <osalvador@suse.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/vmstat.c')
0 files changed, 0 insertions, 0 deletions