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mm/memcg: mz already removed from rb_tree if not NULL

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When mz is not NULL, it means mz can either come from
mem_cgroup_largest_soft_limit_node or
__mem_cgroup_largest_soft_limit_node.  And both of them have removed this
node by __mem_cgroup_remove_exceeded().

Not necessary to call __mem_cgroup_remove_exceeded() again.

[mhocko@suse.com: refine changelog]
Link: https://lkml.kernel.org/r/20220314233030.12334-1-richard.weiyang@gmail.com
Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Wei Yang 2022-04-28 23:15:58 -07:00 committed by akpm
parent d8f653386c
commit 391e0efc15
1 changed files with 0 additions and 1 deletions
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mm/memcontrol.c
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@ -3418,7 +3418,6 @@ unsigned long mem_cgroup_soft_limit_reclaim(pg_data_t *pgdat, int order,
gfp_mask, total_scanned); gfp_mask, total_scanned);
nr_reclaimed += reclaimed; nr_reclaimed += reclaimed;
spin_lock_irq(&mctz->lock); spin_lock_irq(&mctz->lock);
__mem_cgroup_remove_exceeded(mz, mctz);
/* /*
* If we failed to reclaim anything from this memory cgroup * If we failed to reclaim anything from this memory cgroup