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 C57445D8F0 for ; Wed, 7 Aug 2024 20:46:11 +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=1723063571; cv=none; b=snH3vkUUfaLyvxwGqD3KOOKiu7HZl67IfReX+DqaLPMO5X5RwKEgj+y2rf13w8SmAOUjDE1J4/UUTe+6ljGy5GdZ2JSOOkFc8cOzxuaNZnpSEVo9YQFjS5DLWPnQOjLLJbMZZAYz8LhnzJWv1cv2rP6rGVaBYr1/h/g5sdwsBQ4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723063571; c=relaxed/simple; bh=wTZJ7ATqz9jJvKw5EYjliZc7aUhBv+QjzxCCxJF5uJE=; h=Date:To:From:Subject:Message-Id; b=FXNtewEDcp6F6aveqY0lzX31nnw/J5ZVM48FSE7QBYcbwb7+t/Gb/x2W+zV6RILCv///neAJgmvNX0DQXZKTOj7igM9Ce+Gfe83SXC9mIjaDLXT/+ZZspKzlJeVJvjIz9BhnPrV/p9dbXc6HK+bZWPCRziDBzMQ1hPiTtifsHeY= 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=rQPs3xMq; 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="rQPs3xMq" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 52CDCC32781; Wed, 7 Aug 2024 20:46:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1723063571; bh=wTZJ7ATqz9jJvKw5EYjliZc7aUhBv+QjzxCCxJF5uJE=; h=Date:To:From:Subject:From; b=rQPs3xMq4b9ZywIgb3bliQT+Nhl+l93Glbdv7TSxvx5hz8xOH+nouiwGj+2bTMHjN V/hqFibcTQ5eG2liZuWVfcAdJ0cC+r+yRMndC/6y/Zawaz+v3Oyz8nu12IY1gpptZ1 5EVdqG8MnnjwPHZSa7VEQH4NarPtylwMFkTDGtjw= Date: Wed, 07 Aug 2024 13:46:09 -0700 To: mm-commits@vger.kernel.org,ziy@nvidia.com,ying.huang@intel.com,willy@infradead.org,wangkefeng.wang@huawei.com,shy828301@gmail.com,ryan.roberts@arm.com,p.raghav@samsung.com,ioworker0@gmail.com,hughd@google.com,david@redhat.com,da.gomez@samsung.com,chrisl@kernel.org,baohua@kernel.org,21cnbao@gmail.com,baolin.wang@linux.alibaba.com,akpm@linux-foundation.org From: Andrew Morton Subject: + mm-shmem-drop-folio-reference-count-using-nr_pages-in-shmem_delete_from_page_cache.patch added to mm-unstable branch Message-Id: <20240807204611.52CDCC32781@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The patch titled Subject: mm: shmem: drop folio reference count using 'nr_pages' in shmem_delete_from_page_cache() has been added to the -mm mm-unstable branch. Its filename is mm-shmem-drop-folio-reference-count-using-nr_pages-in-shmem_delete_from_page_cache.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-shmem-drop-folio-reference-count-using-nr_pages-in-shmem_delete_from_page_cache.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: Baolin Wang Subject: mm: shmem: drop folio reference count using 'nr_pages' in shmem_delete_from_page_cache() Date: Wed, 7 Aug 2024 15:31:13 +0800 To support large folio swapin/swapout for shmem in the following patches, drop the folio's reference count by the number of pages contained in the folio when a shmem folio is deleted from shmem pagecache after adding into swap cache. Link: https://lkml.kernel.org/r/e535fe0f7f313a72a8c89c8e88d150930662d777.1723012159.git.baolin.wang@linux.alibaba.com Signed-off-by: Baolin Wang Cc: Barry Song <21cnbao@gmail.com> Cc: Barry Song Cc: Chris Li Cc: Daniel Gomez Cc: David Hildenbrand Cc: "Huang, Ying" Cc: Hugh Dickins Cc: Kefeng Wang Cc: Lance Yang Cc: Matthew Wilcox Cc: Pankaj Raghav Cc: Ryan Roberts Cc: Yang Shi Cc: Zi Yan Signed-off-by: Andrew Morton --- mm/shmem.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/mm/shmem.c~mm-shmem-drop-folio-reference-count-using-nr_pages-in-shmem_delete_from_page_cache +++ a/mm/shmem.c @@ -851,7 +851,7 @@ static void shmem_delete_from_page_cache __lruvec_stat_mod_folio(folio, NR_FILE_PAGES, -nr); __lruvec_stat_mod_folio(folio, NR_SHMEM, -nr); xa_unlock_irq(&mapping->i_pages); - folio_put(folio); + folio_put_refs(folio, nr); BUG_ON(error); } _ Patches currently in -mm which might be from baolin.wang@linux.alibaba.com are mm-shmem-avoid-allocating-huge-pages-larger-than-max_pagecache_order-for-shmem.patch mm-shmem-avoid-allocating-huge-pages-larger-than-max_pagecache_order-for-shmem-fix.patch mm-shmem-fix-incorrect-aligned-index-when-checking-conflicts.patch mm-shmem-simplify-the-suitable-huge-orders-validation-for-tmpfs.patch mm-shmem-rename-shmem_is_huge-to-shmem_huge_global_enabled.patch mm-shmem-move-shmem_huge_global_enabled-into-shmem_allowable_huge_orders.patch mm-vmscan-add-validation-before-spliting-shmem-large-folio.patch mm-swap-extend-swap_shmem_alloc-to-support-batch-swap_map_shmem-flag-setting.patch mm-shmem-extend-shmem_partial_swap_usage-to-support-large-folio-swap.patch mm-filemap-use-xa_get_order-to-get-the-swap-entry-order.patch mm-shmem-use-swap_free_nr-to-free-shmem-swap-entries.patch mm-shmem-support-large-folio-allocation-for-shmem_replace_folio.patch mm-shmem-drop-folio-reference-count-using-nr_pages-in-shmem_delete_from_page_cache.patch mm-shmem-split-large-entry-if-the-swapin-folio-is-not-large.patch mm-shmem-support-large-folio-swap-out.patch