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Received: from willy by casper.infradead.org with local (Exim 4.97.1 #2 (Red Hat Linux)) id 1rf1Tm-00000002yrC-2av5; Tue, 27 Feb 2024 17:42:58 +0000 From: "Matthew Wilcox (Oracle)" To: Andrew Morton Cc: "Matthew Wilcox (Oracle)" , linux-mm@kvack.org Subject: [PATCH v3 07/18] mm: Use free_unref_folios() in put_pages_list() Date: Tue, 27 Feb 2024 17:42:41 +0000 Message-ID: <20240227174254.710559-8-willy@infradead.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240227174254.710559-1-willy@infradead.org> References: <20240227174254.710559-1-willy@infradead.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 173324001D X-Rspam-User: X-Stat-Signature: yjhgfofy7bjm767wtuy3g3moiqopq6ab X-Rspamd-Server: rspam03 X-HE-Tag: 1709055779-206010 X-HE-Meta: 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Break up the list of folios into batches here so that the folios are more likely to be cache hot when doing the rest of the processing. Signed-off-by: Matthew Wilcox (Oracle) --- mm/swap.c | 17 ++++++++++------- 1 file changed, 10 insertions(+), 7 deletions(-) diff --git a/mm/swap.c b/mm/swap.c index ee8b131bf32c..ad3f2e9448a4 100644 --- a/mm/swap.c +++ b/mm/swap.c @@ -138,22 +138,25 @@ EXPORT_SYMBOL(__folio_put); */ void put_pages_list(struct list_head *pages) { - struct folio *folio, *next; + struct folio_batch fbatch; + struct folio *folio; - list_for_each_entry_safe(folio, next, pages, lru) { - if (!folio_put_testzero(folio)) { - list_del(&folio->lru); + folio_batch_init(&fbatch); + list_for_each_entry(folio, pages, lru) { + if (!folio_put_testzero(folio)) continue; - } if (folio_test_large(folio)) { - list_del(&folio->lru); __folio_put_large(folio); continue; } /* LRU flag must be clear because it's passed using the lru */ + if (folio_batch_add(&fbatch, folio) > 0) + continue; + free_unref_folios(&fbatch); } - free_unref_page_list(pages); + if (fbatch.nr) + free_unref_folios(&fbatch); INIT_LIST_HEAD(pages); } EXPORT_SYMBOL(put_pages_list); -- 2.43.0