[PATCH v2 1/7] mm/damon: refactor DAMOS_PAGEOUT with migration_mode
From: Honggyu Kim <hidden>
Date: 2024-02-26 14:06:16
Also in:
damon, linux-mm, lkml
Subsystem:
damon, memory management, the rest · Maintainers:
SeongJae Park, Andrew Morton, Linus Torvalds
This is a preparation patch that introduces migration modes. The damon_pa_pageout is renamed to damon_pa_migrate and it receives an extra argument for migration_mode. No functional changes applied. Signed-off-by: Honggyu Kim <redacted> --- mm/damon/paddr.c | 18 +++++++++++++++--- 1 file changed, 15 insertions(+), 3 deletions(-)
diff --git a/mm/damon/paddr.c b/mm/damon/paddr.c
index 081e2a325778..277a1c4d833c 100644
--- a/mm/damon/paddr.c
+++ b/mm/damon/paddr.c@@ -224,7 +224,12 @@ static bool damos_pa_filter_out(struct damos *scheme, struct folio *folio) return false; } -static unsigned long damon_pa_pageout(struct damon_region *r, struct damos *s) +enum migration_mode { + MIG_PAGEOUT, +}; + +static unsigned long damon_pa_migrate(struct damon_region *r, struct damos *s, + enum migration_mode mm) { unsigned long addr, applied; LIST_HEAD(folio_list);
@@ -249,7 +254,14 @@ static unsigned long damon_pa_pageout(struct damon_region *r, struct damos *s) put_folio: folio_put(folio); } - applied = reclaim_pages(&folio_list); + switch (mm) { + case MIG_PAGEOUT: + applied = reclaim_pages(&folio_list); + break; + default: + /* Unexpected migration mode. */ + return 0; + } cond_resched(); return applied * PAGE_SIZE; }
@@ -297,7 +309,7 @@ static unsigned long damon_pa_apply_scheme(struct damon_ctx *ctx, { switch (scheme->action) { case DAMOS_PAGEOUT: - return damon_pa_pageout(r, scheme); + return damon_pa_migrate(r, scheme, MIG_PAGEOUT); case DAMOS_LRU_PRIO: return damon_pa_mark_accessed(r, scheme); case DAMOS_LRU_DEPRIO:
--
2.34.1