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 2627178E67 for ; Thu, 21 Dec 2023 22:30:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="b+Znv8un" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E3E9AC433C7; Thu, 21 Dec 2023 22:30:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1703197805; bh=AIOmb81t6aU7KfAo+Q6b5yfp0wJzOWfQo4GEt0Cjj0E=; h=Date:To:From:Subject:From; b=b+Znv8una77pzBYRbYDiRrHuvrvuk7Ma0BXyj8Lcw08nWKVbeOv/+iJJPGsflRn4a qJ+xx6Gn/4g6ke2xSnKJGod6dvCTpdTmSZnEkNsdgB6V2CEgjLKL+Hi+DDa4Xl1CB/ O/xVn5Ukr1L3gdlfSj0Le8GCzIOfLV0zGI1Iqrlc= Date: Thu, 21 Dec 2023 14:30:04 -0800 To: mm-commits@vger.kernel.org,willy@infradead.org,songmuchun@bytedance.com,ryan.roberts@arm.com,peterx@redhat.com,muchun.song@linux.dev,hughd@google.com,fengwei.yin@intel.com,david@redhat.com,akpm@linux-foundation.org From: Andrew Morton Subject: + documentation-stop-referring-to-page_remove_rmap.patch added to mm-unstable branch Message-Id: <20231221223004.E3E9AC433C7@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The patch titled Subject: Documentation: stop referring to page_remove_rmap() has been added to the -mm mm-unstable branch. Its filename is documentation-stop-referring-to-page_remove_rmap.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/documentation-stop-referring-to-page_remove_rmap.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: David Hildenbrand Subject: Documentation: stop referring to page_remove_rmap() Date: Wed, 20 Dec 2023 23:44:55 +0100 Refer to folio_remove_rmap_*() instaed. Link: https://lkml.kernel.org/r/20231220224504.646757-32-david@redhat.com Signed-off-by: David Hildenbrand Cc: Hugh Dickins Cc: Matthew Wilcox (Oracle) Cc: Muchun Song Cc: Muchun Song Cc: Peter Xu Cc: Ryan Roberts Cc: Yin Fengwei Signed-off-by: Andrew Morton --- Documentation/mm/transhuge.rst | 2 +- Documentation/mm/unevictable-lru.rst | 4 ++-- 2 files changed, 3 insertions(+), 3 deletions(-) --- a/Documentation/mm/transhuge.rst~documentation-stop-referring-to-page_remove_rmap +++ a/Documentation/mm/transhuge.rst @@ -156,7 +156,7 @@ Partial unmap and deferred_split_folio() Unmapping part of THP (with munmap() or other way) is not going to free memory immediately. Instead, we detect that a subpage of THP is not in use -in page_remove_rmap() and queue the THP for splitting if memory pressure +in folio_remove_rmap_*() and queue the THP for splitting if memory pressure comes. Splitting will free up unused subpages. Splitting the page right away is not an option due to locking context in --- a/Documentation/mm/unevictable-lru.rst~documentation-stop-referring-to-page_remove_rmap +++ a/Documentation/mm/unevictable-lru.rst @@ -486,7 +486,7 @@ munlock the pages if we're removing the Before the unevictable/mlock changes, mlocking did not mark the pages in any way, so unmapping them required no processing. -For each PTE (or PMD) being unmapped from a VMA, page_remove_rmap() calls +For each PTE (or PMD) being unmapped from a VMA, folio_remove_rmap_*() calls munlock_vma_folio(), which calls munlock_folio() when the VMA is VM_LOCKED (unless it was a PTE mapping of a part of a transparent huge page). @@ -511,7 +511,7 @@ userspace; truncation even unmaps and de which had been Copied-On-Write from the file pages now being truncated. Mlocked pages can be munlocked and deleted in this way: like with munmap(), -for each PTE (or PMD) being unmapped from a VMA, page_remove_rmap() calls +for each PTE (or PMD) being unmapped from a VMA, folio_remove_rmap_*() calls munlock_vma_folio(), which calls munlock_folio() when the VMA is VM_LOCKED (unless it was a PTE mapping of a part of a transparent huge page). _ Patches currently in -mm which might be from david@redhat.com are mm-rmap-rename-hugepage_add-to-hugetlb_add.patch mm-rmap-introduce-and-use-hugetlb_remove_rmap.patch mm-rmap-introduce-and-use-hugetlb_add_file_rmap.patch mm-rmap-introduce-and-use-hugetlb_try_dup_anon_rmap.patch mm-rmap-introduce-and-use-hugetlb_try_share_anon_rmap.patch mm-rmap-add-hugetlb-sanity-checks-for-anon-rmap-handling.patch mm-rmap-convert-folio_add_file_rmap_range-into-folio_add_file_rmap_.patch mm-memory-page_add_file_rmap-folio_add_file_rmap_.patch mm-huge_memory-page_add_file_rmap-folio_add_file_rmap_pmd.patch mm-migrate-page_add_file_rmap-folio_add_file_rmap_pte.patch mm-userfaultfd-page_add_file_rmap-folio_add_file_rmap_pte.patch mm-rmap-remove-page_add_file_rmap.patch mm-rmap-factor-out-adding-folio-mappings-into-__folio_add_rmap.patch mm-rmap-introduce-folio_add_anon_rmap_.patch mm-huge_memory-batch-rmap-operations-in-__split_huge_pmd_locked.patch mm-huge_memory-page_add_anon_rmap-folio_add_anon_rmap_pmd.patch mm-migrate-page_add_anon_rmap-folio_add_anon_rmap_pte.patch mm-ksm-page_add_anon_rmap-folio_add_anon_rmap_pte.patch mm-swapfile-page_add_anon_rmap-folio_add_anon_rmap_pte.patch mm-memory-page_add_anon_rmap-folio_add_anon_rmap_pte.patch mm-rmap-remove-page_add_anon_rmap.patch mm-rmap-remove-rmap_compound.patch mm-rmap-introduce-folio_remove_rmap_.patch kernel-events-uprobes-page_remove_rmap-folio_remove_rmap_pte.patch mm-huge_memory-page_remove_rmap-folio_remove_rmap_pmd.patch mm-khugepaged-page_remove_rmap-folio_remove_rmap_pte.patch mm-ksm-page_remove_rmap-folio_remove_rmap_pte.patch mm-memory-page_remove_rmap-folio_remove_rmap_pte.patch mm-migrate_device-page_remove_rmap-folio_remove_rmap_pte.patch mm-rmap-page_remove_rmap-folio_remove_rmap_pte.patch documentation-stop-referring-to-page_remove_rmap.patch mm-rmap-remove-page_remove_rmap.patch mm-rmap-convert-page_dup_file_rmap-to-folio_dup_file_rmap_.patch mm-rmap-introduce-folio_try_dup_anon_rmap_.patch mm-huge_memory-page_try_dup_anon_rmap-folio_try_dup_anon_rmap_pmd.patch mm-memory-page_try_dup_anon_rmap-folio_try_dup_anon_rmap_pte.patch mm-rmap-remove-page_try_dup_anon_rmap.patch mm-convert-page_try_share_anon_rmap-to-folio_try_share_anon_rmap_.patch mm-rmap-rename-compound_mapped-to-entirely_mapped.patch mm-remove-one-last-reference-to-page_add__rmap.patch