euleros inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I8T1MB?from=project-issue CVE: NA
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Export reclaim_pages so that etmem_swap can exploit this for memory reclamation.
In etmem swap module, it will receive a list of pages that need to be reclaimed, sent from the user mode program. etmem swap module will do some checks and add appropriate candidates to folio_list, which will later be reclaimed by reclaim_pages.
Signed-off-by: Yuchen Tang tangyuchen5@huawei.com --- include/linux/swap.h | 1 + mm/internal.h | 1 - mm/vmscan.c | 1 + 3 files changed, 2 insertions(+), 1 deletion(-)
diff --git a/include/linux/swap.h b/include/linux/swap.h index 9dc160d6fd43..5ac12a963469 100644 --- a/include/linux/swap.h +++ b/include/linux/swap.h @@ -416,6 +416,7 @@ extern void lru_cache_add_inactive_or_unevictable(struct page *page, extern unsigned long zone_reclaimable_pages(struct zone *zone); extern unsigned long try_to_free_pages(struct zonelist *zonelist, int order, gfp_t gfp_mask, nodemask_t *mask); +extern unsigned long reclaim_pages(struct list_head *folio_list);
#define MEMCG_RECLAIM_MAY_SWAP (1 << 1) #define MEMCG_RECLAIM_PROACTIVE (1 << 2) diff --git a/mm/internal.h b/mm/internal.h index f4416fcbae78..a266a08e0831 100644 --- a/mm/internal.h +++ b/mm/internal.h @@ -810,7 +810,6 @@ extern unsigned long __must_check vm_mmap_pgoff(struct file *, unsigned long, unsigned long, unsigned long);
extern void set_pageblock_order(void); -unsigned long reclaim_pages(struct list_head *folio_list); unsigned int reclaim_clean_pages_from_list(struct zone *zone, struct list_head *folio_list); /* The ALLOC_WMARK bits are used as an index to zone->watermark */ diff --git a/mm/vmscan.c b/mm/vmscan.c index d8cd8ffa0119..033fa4d9d380 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -2844,6 +2844,7 @@ unsigned long reclaim_pages(struct list_head *folio_list)
return nr_reclaimed; } +EXPORT_SYMBOL_GPL(reclaim_pages);
static unsigned long shrink_list(enum lru_list lru, unsigned long nr_to_scan, struct lruvec *lruvec, struct scan_control *sc)