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| author | Ingo Molnar <mingo@kernel.org> | 2017-04-03 16:36:32 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2017-04-03 16:36:32 +0200 |
| commit | 7f75540ff2ca84dbac26cf9deeb620cbf5646f5e (patch) | |
| tree | 1eb54748074d3a91f3dd70fb5d4b23bf713f0bd5 /mm/memory_hotplug.c | |
| parent | 474aeffd88b87746a75583f356183d5c6caa4213 (diff) | |
| parent | a71c9a1c779f2499fb2afc0553e543f18aff6edf (diff) | |
| download | linux-7f75540ff2ca84dbac26cf9deeb620cbf5646f5e.tar.bz2 | |
Merge tag 'v4.11-rc5' into x86/mm, to refresh the branch
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'mm/memory_hotplug.c')
| -rw-r--r-- | mm/memory_hotplug.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index 295479b792ec..6fa7208bcd56 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -125,9 +125,12 @@ void put_online_mems(void) } +/* Serializes write accesses to mem_hotplug.active_writer. */ +static DEFINE_MUTEX(memory_add_remove_lock); + void mem_hotplug_begin(void) { - assert_held_device_hotplug(); + mutex_lock(&memory_add_remove_lock); mem_hotplug.active_writer = current; @@ -147,6 +150,7 @@ void mem_hotplug_done(void) mem_hotplug.active_writer = NULL; mutex_unlock(&mem_hotplug.lock); memhp_lock_release(); + mutex_unlock(&memory_add_remove_lock); } /* add this memory to iomem resource */ |