From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id BB7D019BBC for ; Thu, 28 Nov 2024 01:04:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732755890; cv=none; b=nKRl7KvnS82b8Jeu2wj3AtAk0JllZ33KdBVqpq8oetiIR4jLbfDCsyI70LeVRx/YzWrYqOFODa1kvXlgB4y3hV/xSH0mwhjkTlPiXjPy7SpUdlI6SHACPvb7jLkcoAy3r7jzYZyGAGN6xtHxoQLvUGdc4uPnZIo7xCaOPrPhqgc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732755890; c=relaxed/simple; bh=I+/byNIwlWrXdEUXGdtq3morOVhujs1Tv2hRVmuzPAw=; h=Date:To:From:Subject:Message-Id; b=hnddgKsfTfiE5AU8uzI556Y0fvSKCly/y/VWp7y2wWZ+yEzGP/LXVJhHUJUA6f3hUhy848weqC3IgtLuNiZIMf7rU5NHjMsvfsvRrt8v5Yh1iSWwtAKnrUabCm0WUUQB0NPbPr0ZsYi7PU1So8Nja4yD8sDD7v0iREFRESbdNzA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b=OPuhn11B; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="OPuhn11B" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 85FE8C4CECC; Thu, 28 Nov 2024 01:04:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1732755890; bh=I+/byNIwlWrXdEUXGdtq3morOVhujs1Tv2hRVmuzPAw=; h=Date:To:From:Subject:From; b=OPuhn11BatLPsYEyZUO1qrSNhFgVBbCepgzxdv9FgB+ELpM9gNikjdG27juT1xPn4 AEPiXW2B+HDu9mKTUrNtfL3LkiwLHG9mNhdouqmtWpNwuRkxTqcATKuVj2UazqH2rv iZk3lM2+tyZW2RttalJunaoOpO4YUYDHiuhVBeTU= Date: Wed, 27 Nov 2024 17:04:50 -0800 To: mm-commits@vger.kernel.org,william.kucharski@oracle.com,vbabka@suse.cz,songmuchun@bytedance.com,mgorman@techsinguularity.net,linmiaohe@huawei.com,david@redhat.com,42.hyeyoo@gmail.com,willy@infradead.org,akpm@linux-foundation.org From: Andrew Morton Subject: + mm-page_alloc-add-__alloc_frozen_pages.patch added to mm-unstable branch Message-Id: <20241128010450.85FE8C4CECC@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The patch titled Subject: mm/page_alloc: add __alloc_frozen_pages() has been added to the -mm mm-unstable branch. Its filename is mm-page_alloc-add-__alloc_frozen_pages.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-page_alloc-add-__alloc_frozen_pages.patch This patch will later appear in the mm-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via the mm-everything branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there every 2-3 working days ------------------------------------------------------ From: "Matthew Wilcox (Oracle)" Subject: mm/page_alloc: add __alloc_frozen_pages() Date: Mon, 25 Nov 2024 21:01:45 +0000 Defer the initialisation of the page refcount to the new __alloc_pages() wrapper and turn the old __alloc_pages() into __alloc_frozen_pages(). Link: https://lkml.kernel.org/r/20241125210149.2976098-14-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) Cc: David Hildenbrand Cc: Hyeonggon Yoo <42.hyeyoo@gmail.com> Cc: Mel Gorman Cc: Miaohe Lin Cc: Muchun Song Cc: Vlastimil Babka Cc: William Kucharski Signed-off-by: Andrew Morton --- mm/internal.h | 4 ++++ mm/page_alloc.c | 18 ++++++++++++++---- 2 files changed, 18 insertions(+), 4 deletions(-) --- a/mm/internal.h~mm-page_alloc-add-__alloc_frozen_pages +++ a/mm/internal.h @@ -740,6 +740,10 @@ extern bool free_pages_prepare(struct pa 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); --- a/mm/page_alloc.c~mm-page_alloc-add-__alloc_frozen_pages +++ a/mm/page_alloc.c @@ -4711,8 +4711,8 @@ EXPORT_SYMBOL_GPL(alloc_pages_bulk_nopro /* * 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; @@ -4768,14 +4768,24 @@ out: 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, _ Patches currently in -mm which might be from willy@infradead.org are mm-page_alloc-cache-page_zone-result-in-free_unref_page.patch mm-make-alloc_pages_mpol-static.patch mm-page_alloc-export-free_frozen_pages-instead-of-free_unref_page.patch mm-page_alloc-move-set_page_refcounted-to-callers-of-post_alloc_hook.patch mm-page_alloc-move-set_page_refcounted-to-callers-of-prep_new_page.patch mm-page_alloc-move-set_page_refcounted-to-callers-of-get_page_from_freelist.patch mm-page_alloc-move-set_page_refcounted-to-callers-of-__alloc_pages_cpuset_fallback.patch mm-page_alloc-move-set_page_refcounted-to-callers-of-__alloc_pages_may_oom.patch mm-page_alloc-move-set_page_refcounted-to-callers-of-__alloc_pages_direct_compact.patch mm-page_alloc-move-set_page_refcounted-to-callers-of-__alloc_pages_direct_reclaim.patch mm-page_alloc-move-set_page_refcounted-to-callers-of-__alloc_pages_slowpath.patch mm-page_alloc-move-set_page_refcounted-to-end-of-__alloc_pages.patch mm-page_alloc-add-__alloc_frozen_pages.patch mm-mempolicy-add-alloc_frozen_pages.patch slab-allocate-frozen-pages.patch