From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 22184C1B08C for ; Thu, 15 Jul 2021 13:40:38 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 9C2D061279 for ; Thu, 15 Jul 2021 13:40:37 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9C2D061279 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=suse.cz Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id D7A818D00C3; Thu, 15 Jul 2021 09:40:36 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id CF6448D00CB; Thu, 15 Jul 2021 09:40:36 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id A868E8D00CA; Thu, 15 Jul 2021 09:40:36 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0009.hostedemail.com [216.40.44.9]) by kanga.kvack.org (Postfix) with ESMTP id 71E118D00C4 for ; Thu, 15 Jul 2021 09:40:36 -0400 (EDT) Received: from smtpin19.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id 3F0321C979 for ; Thu, 15 Jul 2021 13:40:35 +0000 (UTC) X-FDA: 78364932030.19.7C472B5 Received: from smtp-out2.suse.de (smtp-out2.suse.de [195.135.220.29]) by imf17.hostedemail.com (Postfix) with ESMTP id B2E28F000557 for ; Thu, 15 Jul 2021 13:40:34 +0000 (UTC) Received: from relay2.suse.de (relay2.suse.de [149.44.160.134]) by smtp-out2.suse.de (Postfix) with ESMTP id 7BDA21FE26; Thu, 15 Jul 2021 13:40:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_rsa; t=1626356433; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=QEFMUcS9qjUtKezhyR8KVCgUDuuKy80h1wOdNoRHn94=; b=KBrOk5LequeM0FN8Q5Sy2x0GnG6DR9O0ak7P/8WZ/2ZuU8WWf9rVSrLxNt5eJZLeXOxiCe 8r80IozYO7t6LAyRaNUGnaAdzd/FyLtc+hrI4Lu5dYOLeL4cOp+xB+YF/vqF40uzma2Src GGe2Me2h+1aMoZxfFREziM1GDehT15o= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_ed25519; t=1626356433; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=QEFMUcS9qjUtKezhyR8KVCgUDuuKy80h1wOdNoRHn94=; b=h5Q1HCsGJCzTKtWC47Z97uBk3hj2WXAnTbdcqzK0pfMqT/N0yK9yHGV/KvZOpi84vxitRP N43q3QGn2MwAaDDw== Received: from quack2.suse.cz (unknown [10.100.200.198]) by relay2.suse.de (Postfix) with ESMTP id 68331A3B9F; Thu, 15 Jul 2021 13:40:33 +0000 (UTC) Received: by quack2.suse.cz (Postfix, from userid 1000) id 224281E0CCF; Thu, 15 Jul 2021 15:40:33 +0200 (CEST) From: Jan Kara To: Cc: , Christoph Hellwig , "Darrick J. Wong" , Ted Tso , Dave Chinner , Matthew Wilcox , , , linux-f2fs-devel@lists.sourceforge.net, linux-cifs@vger.kernel.org, ceph-devel@vger.kernel.org, Jan Kara , Christoph Hellwig Subject: [PATCH 09/14] xfs: Convert double locking of MMAPLOCK to use VFS helpers Date: Thu, 15 Jul 2021 15:40:19 +0200 Message-Id: <20210715134032.24868-9-jack@suse.cz> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20210715133202.5975-1-jack@suse.cz> References: <20210715133202.5975-1-jack@suse.cz> MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=4962; h=from:subject; bh=BkFIeDQJLt3VUlGxHPiHMbNyQjSPAglxlFXoJSefPwA=; b=owEBbQGS/pANAwAIAZydqgc/ZEDZAcsmYgBg8DrDrmnnYiDuJLkZN6B9soYAFPxL773Kba3F9V27 njF+av+JATMEAAEIAB0WIQSrWdEr1p4yirVVKBycnaoHP2RA2QUCYPA6wwAKCRCcnaoHP2RA2ZwhCA Dl065EY3OZ4xioVDa5sRhZvi9W5w6YVk8vLXfzZDKRb66PCmY+oMO3baxEQDUPCHhhapITjgMTziNv 5w1MmUZL5p7hXqFQm6w6i2zcm9BCZhcAeNCqBKdruxsHGBteGhyBbFyAbQqxqByfNEAIDkF2YylFrS 2wDZw83OIHXDQ61xcwpfKzHMbFXfSLExaxWNKHLlUxKhLwG2WTiwnAuOF/UiKtyG1M6QhQQ4qM96pP i0SpQ0pLa3jYsNIbXwVH6I+wYA9gjZxmaZQIBMmbtCpWvFSryIEveSJ/ah4ysErTcpqKu+m4pJuj7w b/otyB9lNH7lPC2wfP71O8Ekz5Fe1d X-Developer-Key: i=jack@suse.cz; a=openpgp; fpr=93C6099A142276A28BBE35D815BC833443038D8C Authentication-Results: imf17.hostedemail.com; dkim=pass header.d=suse.cz header.s=susede2_rsa header.b=KBrOk5Le; dkim=pass header.d=suse.cz header.s=susede2_ed25519 header.b=h5Q1HCsG; spf=pass (imf17.hostedemail.com: domain of jack@suse.cz designates 195.135.220.29 as permitted sender) smtp.mailfrom=jack@suse.cz; dmarc=none X-Stat-Signature: cmisgdn1t6yk3euexxhe673wry4x681x X-Rspamd-Queue-Id: B2E28F000557 X-Rspamd-Server: rspam01 X-HE-Tag: 1626356434-828416 Content-Transfer-Encoding: quoted-printable 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: Convert places in XFS that take MMAPLOCK for two inodes to use helper VFS provides for it (filemap_invalidate_down_write_two()). Note that this changes lock ordering for MMAPLOCK from inode number based ordering to pointer based ordering VFS generally uses. CC: "Darrick J. Wong" Reviewed-by: Darrick J. Wong Reviewed-by: Christoph Hellwig Signed-off-by: Jan Kara --- fs/xfs/xfs_bmap_util.c | 15 ++++++++------- fs/xfs/xfs_inode.c | 37 +++++++++++-------------------------- 2 files changed, 19 insertions(+), 33 deletions(-) diff --git a/fs/xfs/xfs_bmap_util.c b/fs/xfs/xfs_bmap_util.c index 213a97a921bb..1cd3f940fa6a 100644 --- a/fs/xfs/xfs_bmap_util.c +++ b/fs/xfs/xfs_bmap_util.c @@ -1626,7 +1626,6 @@ xfs_swap_extents( struct xfs_bstat *sbp =3D &sxp->sx_stat; int src_log_flags, target_log_flags; int error =3D 0; - int lock_flags; uint64_t f; int resblks =3D 0; unsigned int flags =3D 0; @@ -1638,8 +1637,8 @@ xfs_swap_extents( * do the rest of the checks. */ lock_two_nondirectories(VFS_I(ip), VFS_I(tip)); - lock_flags =3D XFS_MMAPLOCK_EXCL; - xfs_lock_two_inodes(ip, XFS_MMAPLOCK_EXCL, tip, XFS_MMAPLOCK_EXCL); + filemap_invalidate_lock_two(VFS_I(ip)->i_mapping, + VFS_I(tip)->i_mapping); =20 /* Verify that both files have the same format */ if ((VFS_I(ip)->i_mode & S_IFMT) !=3D (VFS_I(tip)->i_mode & S_IFMT)) { @@ -1711,7 +1710,6 @@ xfs_swap_extents( * or cancel will unlock the inodes from this point onwards. */ xfs_lock_two_inodes(ip, XFS_ILOCK_EXCL, tip, XFS_ILOCK_EXCL); - lock_flags |=3D XFS_ILOCK_EXCL; xfs_trans_ijoin(tp, ip, 0); xfs_trans_ijoin(tp, tip, 0); =20 @@ -1830,13 +1828,16 @@ xfs_swap_extents( trace_xfs_swap_extent_after(ip, 0); trace_xfs_swap_extent_after(tip, 1); =20 +out_unlock_ilock: + xfs_iunlock(ip, XFS_ILOCK_EXCL); + xfs_iunlock(tip, XFS_ILOCK_EXCL); out_unlock: - xfs_iunlock(ip, lock_flags); - xfs_iunlock(tip, lock_flags); + filemap_invalidate_unlock_two(VFS_I(ip)->i_mapping, + VFS_I(tip)->i_mapping); unlock_two_nondirectories(VFS_I(ip), VFS_I(tip)); return error; =20 out_trans_cancel: xfs_trans_cancel(tp); - goto out_unlock; + goto out_unlock_ilock; } diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c index d6a8ac76b45d..3c0bb21453dc 100644 --- a/fs/xfs/xfs_inode.c +++ b/fs/xfs/xfs_inode.c @@ -552,12 +552,10 @@ xfs_lock_inodes( } =20 /* - * xfs_lock_two_inodes() can only be used to lock one type of lock at a = time - - * the mmaplock or the ilock, but not more than one type at a time. If w= e lock - * more than one at a time, lockdep will report false positives saying w= e have - * violated locking orders. The iolock must be double-locked separately= since - * we use i_rwsem for that. We now support taking one lock EXCL and the= other - * SHARED. + * xfs_lock_two_inodes() can only be used to lock ilock. The iolock and + * mmaplock must be double-locked separately since we use i_rwsem and + * invalidate_lock for that. We now support taking one lock EXCL and the + * other SHARED. */ void xfs_lock_two_inodes( @@ -575,15 +573,8 @@ xfs_lock_two_inodes( ASSERT(hweight32(ip1_mode) =3D=3D 1); ASSERT(!(ip0_mode & (XFS_IOLOCK_SHARED|XFS_IOLOCK_EXCL))); ASSERT(!(ip1_mode & (XFS_IOLOCK_SHARED|XFS_IOLOCK_EXCL))); - ASSERT(!(ip0_mode & (XFS_MMAPLOCK_SHARED|XFS_MMAPLOCK_EXCL)) || - !(ip0_mode & (XFS_ILOCK_SHARED|XFS_ILOCK_EXCL))); - ASSERT(!(ip1_mode & (XFS_MMAPLOCK_SHARED|XFS_MMAPLOCK_EXCL)) || - !(ip1_mode & (XFS_ILOCK_SHARED|XFS_ILOCK_EXCL))); - ASSERT(!(ip1_mode & (XFS_MMAPLOCK_SHARED|XFS_MMAPLOCK_EXCL)) || - !(ip0_mode & (XFS_ILOCK_SHARED|XFS_ILOCK_EXCL))); - ASSERT(!(ip0_mode & (XFS_MMAPLOCK_SHARED|XFS_MMAPLOCK_EXCL)) || - !(ip1_mode & (XFS_ILOCK_SHARED|XFS_ILOCK_EXCL))); - + ASSERT(!(ip0_mode & (XFS_MMAPLOCK_SHARED|XFS_MMAPLOCK_EXCL))); + ASSERT(!(ip1_mode & (XFS_MMAPLOCK_SHARED|XFS_MMAPLOCK_EXCL))); ASSERT(ip0->i_ino !=3D ip1->i_ino); =20 if (ip0->i_ino > ip1->i_ino) { @@ -3748,11 +3739,8 @@ xfs_ilock2_io_mmap( ret =3D xfs_iolock_two_inodes_and_break_layout(VFS_I(ip1), VFS_I(ip2)); if (ret) return ret; - if (ip1 =3D=3D ip2) - xfs_ilock(ip1, XFS_MMAPLOCK_EXCL); - else - xfs_lock_two_inodes(ip1, XFS_MMAPLOCK_EXCL, - ip2, XFS_MMAPLOCK_EXCL); + filemap_invalidate_lock_two(VFS_I(ip1)->i_mapping, + VFS_I(ip2)->i_mapping); return 0; } =20 @@ -3762,12 +3750,9 @@ xfs_iunlock2_io_mmap( struct xfs_inode *ip1, struct xfs_inode *ip2) { - bool same_inode =3D (ip1 =3D=3D ip2); - - xfs_iunlock(ip2, XFS_MMAPLOCK_EXCL); - if (!same_inode) - xfs_iunlock(ip1, XFS_MMAPLOCK_EXCL); + filemap_invalidate_unlock_two(VFS_I(ip1)->i_mapping, + VFS_I(ip2)->i_mapping); inode_unlock(VFS_I(ip2)); - if (!same_inode) + if (ip1 !=3D ip2) inode_unlock(VFS_I(ip1)); } --=20 2.26.2