From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Morton Subject: + btrfs-use-attach-detach_page_private.patch added to -mm tree Date: Mon, 18 May 2020 14:46:13 -0700 Message-ID: <20200518214613.VbMsn1tzY%akpm@linux-foundation.org> References: <20200513175005.1f4839360c18c0238df292d1@linux-foundation.org> Reply-To: linux-kernel@vger.kernel.org Return-path: Received: from mail.kernel.org ([198.145.29.99]:49722 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726831AbgERVqO (ORCPT ); Mon, 18 May 2020 17:46:14 -0400 In-Reply-To: <20200513175005.1f4839360c18c0238df292d1@linux-foundation.org> Sender: mm-commits-owner@vger.kernel.org List-Id: mm-commits@vger.kernel.org To: clm@fb.com, dsterba@suse.com, guoqing.jiang@cloud.ionos.com, josef@toxicpanda.com, mm-commits@vger.kernel.org The patch titled Subject: btrfs: use attach/detach_page_private has been added to the -mm tree. Its filename is btrfs-use-attach-detach_page_private.patch This patch should soon appear at http://ozlabs.org/~akpm/mmots/broken-out/btrfs-use-attach-detach_page_private.patch and later at http://ozlabs.org/~akpm/mmotm/broken-out/btrfs-use-attach-detach_page_private.patch 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 and is updated there every 3-4 working days ------------------------------------------------------ From: Guoqing Jiang Subject: btrfs: use attach/detach_page_private Since the new pair function is introduced, we can call them to clean the code in btrfs. Link: http://lkml.kernel.org/r/20200517214718.468-4-guoqing.jiang@cloud.ionos.com Signed-off-by: Guoqing Jiang Cc: Chris Mason Cc: Josef Bacik Cc: David Sterba Signed-off-by: Andrew Morton --- fs/btrfs/disk-io.c | 4 +--- fs/btrfs/extent_io.c | 21 ++++++--------------- fs/btrfs/inode.c | 23 +++++------------------ 3 files changed, 12 insertions(+), 36 deletions(-) --- a/fs/btrfs/disk-io.c~btrfs-use-attach-detach_page_private +++ a/fs/btrfs/disk-io.c @@ -980,9 +980,7 @@ static void btree_invalidatepage(struct btrfs_warn(BTRFS_I(page->mapping->host)->root->fs_info, "page private not zero on page %llu", (unsigned long long)page_offset(page)); - ClearPagePrivate(page); - set_page_private(page, 0); - put_page(page); + detach_page_private(page); } } --- a/fs/btrfs/extent_io.c~btrfs-use-attach-detach_page_private +++ a/fs/btrfs/extent_io.c @@ -3076,22 +3076,16 @@ static int submit_extent_page(unsigned i static void attach_extent_buffer_page(struct extent_buffer *eb, struct page *page) { - if (!PagePrivate(page)) { - SetPagePrivate(page); - get_page(page); - set_page_private(page, (unsigned long)eb); - } else { + if (!PagePrivate(page)) + attach_page_private(page, eb); + else WARN_ON(page->private != (unsigned long)eb); - } } void set_page_extent_mapped(struct page *page) { - if (!PagePrivate(page)) { - SetPagePrivate(page); - get_page(page); - set_page_private(page, EXTENT_PAGE_PRIVATE); - } + if (!PagePrivate(page)) + attach_page_private(page, (void *)EXTENT_PAGE_PRIVATE); } static struct extent_map * @@ -4910,10 +4904,7 @@ static void btrfs_release_extent_buffer_ * We need to make sure we haven't be attached * to a new eb. */ - ClearPagePrivate(page); - set_page_private(page, 0); - /* One for the page private */ - put_page(page); + detach_page_private(page); } if (mapped) --- a/fs/btrfs/inode.c~btrfs-use-attach-detach_page_private +++ a/fs/btrfs/inode.c @@ -8301,11 +8301,8 @@ static void btrfs_readahead(struct reada static int __btrfs_releasepage(struct page *page, gfp_t gfp_flags) { int ret = try_release_extent_mapping(page, gfp_flags); - if (ret == 1) { - ClearPagePrivate(page); - set_page_private(page, 0); - put_page(page); - } + if (ret == 1) + detach_page_private(page); return ret; } @@ -8327,14 +8324,8 @@ static int btrfs_migratepage(struct addr if (ret != MIGRATEPAGE_SUCCESS) return ret; - if (page_has_private(page)) { - ClearPagePrivate(page); - get_page(newpage); - set_page_private(newpage, page_private(page)); - set_page_private(page, 0); - put_page(page); - SetPagePrivate(newpage); - } + if (page_has_private(page)) + attach_page_private(newpage, detach_page_private(page)); if (PagePrivate2(page)) { ClearPagePrivate2(page); @@ -8456,11 +8447,7 @@ again: } ClearPageChecked(page); - if (PagePrivate(page)) { - ClearPagePrivate(page); - set_page_private(page, 0); - put_page(page); - } + detach_page_private(page); } /* _ Patches currently in -mm which might be from guoqing.jiang@cloud.ionos.com are include-linux-pagemaph-introduce-attach-detach_page_private.patch md-remove-__clear_page_buffers-and-use-attach-detach_page_private.patch btrfs-use-attach-detach_page_private.patch fs-bufferc-use-attach-detach_page_private.patch f2fs-use-attach-detach_page_private.patch iomap-use-attach-detach_page_private.patch ntfs-replace-attach_page_buffers-with-attach_page_private.patch orangefs-use-attach-detach_page_private.patch buffer_headh-remove-attach_page_buffers.patch mm-migratec-call-detach_page_private-to-cleanup-code.patch