From owner-svn-src-all@FreeBSD.ORG Fri Dec 13 06:12:22 2013 Return-Path: Delivered-To: svn-src-all@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id CA4397C1; Fri, 13 Dec 2013 06:12:22 +0000 (UTC) Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:1900:2254:2068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id 9C203160D; Fri, 13 Dec 2013 06:12:22 +0000 (UTC) Received: from svn.freebsd.org ([127.0.1.70]) by svn.freebsd.org (8.14.7/8.14.7) with ESMTP id rBD6CMwG083420; Fri, 13 Dec 2013 06:12:22 GMT (envelope-from kib@svn.freebsd.org) Received: (from kib@localhost) by svn.freebsd.org (8.14.7/8.14.7/Submit) id rBD6CMM7083417; Fri, 13 Dec 2013 06:12:22 GMT (envelope-from kib@svn.freebsd.org) Message-Id: <201312130612.rBD6CMM7083417@svn.freebsd.org> From: Konstantin Belousov Date: Fri, 13 Dec 2013 06:12:22 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-10@freebsd.org Subject: svn commit: r259296 - in stable/10/sys: kern vm X-SVN-Group: stable-10 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.17 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 13 Dec 2013 06:12:22 -0000 Author: kib Date: Fri Dec 13 06:12:21 2013 New Revision: 259296 URL: http://svnweb.freebsd.org/changeset/base/259296 Log: MFC r257899: If filesystem declares that it supports shared locking for writes, use shared vnode lock for VOP_PUTPAGES() as well. Modified: stable/10/sys/kern/vnode_if.src stable/10/sys/vm/vm_pageout.c Directory Properties: stable/10/ (props changed) Modified: stable/10/sys/kern/vnode_if.src ============================================================================== --- stable/10/sys/kern/vnode_if.src Fri Dec 13 06:10:49 2013 (r259295) +++ stable/10/sys/kern/vnode_if.src Fri Dec 13 06:12:21 2013 (r259296) @@ -477,7 +477,7 @@ vop_getpages { }; -%% putpages vp E E E +%% putpages vp L L L vop_putpages { IN struct vnode *vp; Modified: stable/10/sys/vm/vm_pageout.c ============================================================================== --- stable/10/sys/vm/vm_pageout.c Fri Dec 13 06:10:49 2013 (r259295) +++ stable/10/sys/vm/vm_pageout.c Fri Dec 13 06:12:21 2013 (r259296) @@ -570,6 +570,7 @@ vm_pageout_launder(struct vm_pagequeue * vm_object_t object; vm_paddr_t pa; vm_page_t m, m_tmp, next; + int lockmode; vm_pagequeue_lock(pq); TAILQ_FOREACH_SAFE(m, &pq->pq_pl, plinks.q, next) { @@ -605,7 +606,9 @@ vm_pageout_launder(struct vm_pagequeue * vm_object_reference_locked(object); VM_OBJECT_WUNLOCK(object); (void)vn_start_write(vp, &mp, V_WAIT); - vn_lock(vp, LK_EXCLUSIVE | LK_RETRY); + lockmode = MNT_SHARED_WRITES(vp->v_mount) ? + LK_SHARED : LK_EXCLUSIVE; + vn_lock(vp, lockmode | LK_RETRY); VM_OBJECT_WLOCK(object); vm_object_page_clean(object, 0, 0, OBJPC_SYNC); VM_OBJECT_WUNLOCK(object); @@ -902,6 +905,7 @@ vm_pageout_scan(struct vm_domain *vmd, i int act_delta; int vnodes_skipped = 0; int maxlaunder; + int lockmode; boolean_t queues_locked; /* @@ -1193,7 +1197,9 @@ vm_pageout_scan(struct vm_domain *vmd, i ("vp %p with NULL v_mount", vp)); vm_object_reference_locked(object); VM_OBJECT_WUNLOCK(object); - if (vget(vp, LK_EXCLUSIVE | LK_TIMELOCK, + lockmode = MNT_SHARED_WRITES(vp->v_mount) ? + LK_SHARED : LK_EXCLUSIVE; + if (vget(vp, lockmode | LK_TIMELOCK, curthread)) { VM_OBJECT_WLOCK(object); ++pageout_lock_miss;