Messages in this thread Patch in this message | | | From | Tim Blechmann <> | Subject | [PATCH] [RT] avoid preemption in memory controller code | Date | Mon, 8 Dec 2008 15:34:14 +0100 |
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the lru_lock of struct mem_group_per_zone is used to avoid preemption during the __mem_cgroup_stat_add_safe function. therefore, a raw_spinlock_t should be used.
Signed-off-by: Tim Blechmann <tim@klingt.org> --- mm/memcontrol.c | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 517f945..8661732 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -95,9 +95,9 @@ enum mem_cgroup_zstat_index { struct mem_cgroup_per_zone { /* - * spin_lock to protect the per cgroup LRU + * raw_spin_lock to protect the per cgroup LRU */ - spinlock_t lru_lock; + raw_spinlock_t lru_lock; struct list_head active_list; struct list_head inactive_list; unsigned long count[NR_MEM_CGROUP_ZSTAT]; -- 1.5.6.3
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