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bh=T12nlbl/4Y+GQ4Uch7tugY4tn/IhU/zXrrnqkhKCI/8=; b=gn4cFZUiX7oShjsb4J+QpLB0tO yuI9qxl2/UzRhkQLH+5oBQMrMQ0Oetu54JMIc/TYX2UJ90bKCcisNwAAkDhey3akmQm2k58sPBBZb cS5JUUA1BNfjLNmqN2fRzFcF/47vBy35SRWkM1N26VMlpl8SDBCCLLnv3Qm7d4LAuPR1nr+US21Xg mKo0SZubGHmfRPu4cZ/ZQIoB2IrB6tGlSYjnePIKmQd4LQOJyrw5FkQgNteEm4aTU9f+hI5fidfvs QI+mkVwKV1Ly+NjcMI7YWs6Ikktpq9Hjxxp916b+CMOeKLImPoAgxceI4hL5YUlteQRO/v2gWwnzN xehEeC/Q==; Received: from willy by casper.infradead.org with local (Exim 4.98 #2 (Red Hat Linux)) id 1tFgDQ-0000000CUEl-1Gf5; Mon, 25 Nov 2024 21:01:52 +0000 From: "Matthew Wilcox (Oracle)" To: Andrew Morton Cc: "Matthew Wilcox (Oracle)" , linux-mm@kvack.org, David Hildenbrand Subject: [PATCH v3 13/15] mm/page_alloc: Add __alloc_frozen_pages() Date: Mon, 25 Nov 2024 21:01:45 +0000 Message-ID: <20241125210149.2976098-14-willy@infradead.org> X-Mailer: git-send-email 2.47.0 In-Reply-To: <20241125210149.2976098-1-willy@infradead.org> References: <20241125210149.2976098-1-willy@infradead.org> MIME-Version: 1.0 X-Rspam-User: X-Rspamd-Server: rspam03 X-Rspamd-Queue-Id: A0D0780003 X-Stat-Signature: etnp5hyffamyg5htoy9hz1uu5ifbdn1z X-HE-Tag: 1732574294-65971 X-HE-Meta: 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 uGj1HLEp 4NO0zAhoELt+ACLWUlCNhQq5KnSjsuXl5tMIPfXrYrH4mdzHr4NtmIygofGW/fPAU0yDBHy9VweDmJVDOLHghcFG9Ke6/CW2xjAJH6mm1F7+QTQsBDjf2Y24ijMvATY/qkLAy9A0PNMGDmYi6A00rhar7qVqcJDCX+zyecif7JGh0SpQCLkaqMW+vUagZ1ANQLaDV6Wd/H3bEvc187PsP0qfsEn7PuBTnch+/oZ6EYQBhBD+TN9o3H8jOn1aBlUJJA2WbTM15ShlJDwWBeW8wgfkKamT+eSbJQ2Rv 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: Defer the initialisation of the page refcount to the new __alloc_pages() wrapper and turn the old __alloc_pages() into __alloc_frozen_pages(). Signed-off-by: Matthew Wilcox (Oracle) --- mm/internal.h | 4 ++++ mm/page_alloc.c | 18 ++++++++++++++---- 2 files changed, 18 insertions(+), 4 deletions(-) diff --git a/mm/internal.h b/mm/internal.h index 9cc5fdc614cf..55e03f8f41d9 100644 --- a/mm/internal.h +++ b/mm/internal.h @@ -740,6 +740,10 @@ extern bool free_pages_prepare(struct page *page, unsigned int order); extern int user_min_free_kbytes; +struct page *__alloc_frozen_pages_noprof(gfp_t, unsigned int order, int nid, + nodemask_t *); +#define __alloc_frozen_pages(...) \ + alloc_hooks(__alloc_frozen_pages_noprof(__VA_ARGS__)) void free_frozen_pages(struct page *page, unsigned int order); void free_unref_folios(struct folio_batch *fbatch); diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 35fb45b8b369..67b1cb757def 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -4747,8 +4747,8 @@ EXPORT_SYMBOL_GPL(alloc_pages_bulk_noprof); /* * This is the 'heart' of the zoned buddy allocator. */ -struct page *__alloc_pages_noprof(gfp_t gfp, unsigned int order, - int preferred_nid, nodemask_t *nodemask) +struct page *__alloc_frozen_pages_noprof(gfp_t gfp, unsigned int order, + int preferred_nid, nodemask_t *nodemask) { struct page *page; unsigned int alloc_flags = ALLOC_WMARK_LOW; @@ -4804,14 +4804,24 @@ struct page *__alloc_pages_noprof(gfp_t gfp, unsigned int order, free_frozen_pages(page, order); page = NULL; } - if (page) - set_page_refcounted(page); trace_mm_page_alloc(page, order, alloc_gfp, ac.migratetype); kmsan_alloc_page(page, order, alloc_gfp); return page; } +EXPORT_SYMBOL(__alloc_frozen_pages_noprof); + +struct page *__alloc_pages_noprof(gfp_t gfp, unsigned int order, + int preferred_nid, nodemask_t *nodemask) +{ + struct page *page; + + page = __alloc_frozen_pages_noprof(gfp, order, preferred_nid, nodemask); + if (page) + set_page_refcounted(page); + return page; +} EXPORT_SYMBOL(__alloc_pages_noprof); struct folio *__folio_alloc_noprof(gfp_t gfp, unsigned int order, int preferred_nid,