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mm/vmscan: take min_slab_pages into account when try to call shrink_node

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Since commit 6b4f7799c6 ("mm: vmscan: invoke slab shrinkers from
shrink_zone()"), slab reclaim and lru page reclaim are done together in
the shrink_node.  So we should take min_slab_pages into account when try
to call shrink_node.

Link: https://lkml.kernel.org/r/20220425112118.20924-1-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Cc: Huang Ying <ying.huang@intel.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Miaohe Lin 2022-05-12 20:22:58 -07:00 committed by Andrew Morton
parent 448b8ec3bf
commit d8ff6fde8e
1 changed files with 2 additions and 1 deletions
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mm/vmscan.c
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@ -4713,7 +4713,8 @@ static int __node_reclaim(struct pglist_data *pgdat, gfp_t gfp_mask, unsigned in
noreclaim_flag = memalloc_noreclaim_save();
set_task_reclaim_state(p, &sc.reclaim_state);
if (node_pagecache_reclaimable(pgdat) > pgdat->min_unmapped_pages) {
if (node_pagecache_reclaimable(pgdat) > pgdat->min_unmapped_pages ||
node_page_state_pages(pgdat, NR_SLAB_RECLAIMABLE_B) > pgdat->min_slab_pages) {
/*
* Free memory by calling shrink node with increasing
* priorities until we have enough memory freed.