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revert-mm-skip-cma-pages-when-they-are-not-available-update

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also revert b7108d6631 ("Multi-gen LRU: skip CMA pages when they are not
eligible"), per Johannes

Link: https://lkml.kernel.org/r/9060a32d-b2d7-48c0-8626-1db535653c54@gmail.com
Link: https://lkml.kernel.org/r/357ac325-4c61-497a-92a3-bdbd230d5ec9@gmail.com
Fixes: 5da226dbfc ("mm: skip CMA pages when they are not available")
Signed-off-by: Usama Arif <usamaarif642@gmail.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Bharata B Rao <bharata@amd.com>
Cc: Breno Leitao <leitao@debian.org>
Cc: David Hildenbrand <david@redhat.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Rik van Riel <riel@surriel.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Yu Zhao <yuzhao@google.com>
Cc: Zhaoyang Huang <huangzhaoyang@gmail.com>
Cc: Zhaoyang Huang <zhaoyang.huang@unisoc.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Usama Arif 2024-08-21 20:26:07 +01:00 committed by Andrew Morton
parent e9aa9e462e
commit 89eb17a499
1 changed files with 1 additions and 20 deletions
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21
mm/vmscan.c
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@ -4253,25 +4253,6 @@ void lru_gen_soft_reclaim(struct mem_cgroup *memcg, int nid)
#endif /* CONFIG_MEMCG */
#ifdef CONFIG_CMA
/*
* It is waste of effort to scan and reclaim CMA pages if it is not available
* for current allocation context. Kswapd can not be enrolled as it can not
* distinguish this scenario by using sc->gfp_mask = GFP_KERNEL
*/
static bool skip_cma(struct folio *folio, struct scan_control *sc)
{
return !current_is_kswapd() &&
gfp_migratetype(sc->gfp_mask) != MIGRATE_MOVABLE &&
folio_migratetype(folio) == MIGRATE_CMA;
}
#else
static bool skip_cma(struct folio *folio, struct scan_control *sc)
{
return false;
}
#endif
/******************************************************************************
* the eviction
******************************************************************************/
@ -4319,7 +4300,7 @@ static bool sort_folio(struct lruvec *lruvec, struct folio *folio, struct scan_c
}
/* ineligible */
if (zone > sc->reclaim_idx || skip_cma(folio, sc)) {
if (zone > sc->reclaim_idx) {
gen = folio_inc_gen(lruvec, folio, false);
list_move_tail(&folio->lru, &lrugen->folios[gen][type][zone]);
return true;