From owner-svn-src-head@FreeBSD.ORG Sat Mar 17 23:03:21 2012 Return-Path: Delivered-To: svn-src-head@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id C731E1065690; Sat, 17 Mar 2012 23:03:21 +0000 (UTC) (envelope-from kib@FreeBSD.org) Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:4f8:fff6::2c]) by mx1.freebsd.org (Postfix) with ESMTP id 15D3D8FC18; Sat, 17 Mar 2012 23:03:21 +0000 (UTC) Received: from svn.freebsd.org (localhost [127.0.0.1]) by svn.freebsd.org (8.14.4/8.14.4) with ESMTP id q2HN3KjA091012; Sat, 17 Mar 2012 23:03:20 GMT (envelope-from kib@svn.freebsd.org) Received: (from kib@localhost) by svn.freebsd.org (8.14.4/8.14.4/Submit) id q2HN3Kjo091009; Sat, 17 Mar 2012 23:03:20 GMT (envelope-from kib@svn.freebsd.org) Message-Id: <201203172303.q2HN3Kjo091009@svn.freebsd.org> From: Konstantin Belousov Date: Sat, 17 Mar 2012 23:03:20 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org X-SVN-Group: head MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Cc: Subject: svn commit: r233101 - head/sys/fs/nfsclient X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 17 Mar 2012 23:03:21 -0000 Author: kib Date: Sat Mar 17 23:03:20 2012 New Revision: 233101 URL: http://svn.freebsd.org/changeset/base/233101 Log: Add sysctl vfs.nfs.nfs_keep_dirty_on_error to switch the nfs client behaviour on error from write RPC back to behaviour of old nfs client. When set to not zero, the pages for which write failed are kept dirty. PR: kern/165927 Reviewed by: alc MFC after: 2 weeks Modified: head/sys/fs/nfsclient/nfs_clbio.c head/sys/fs/nfsclient/nfs_clvnops.c Modified: head/sys/fs/nfsclient/nfs_clbio.c ============================================================================== --- head/sys/fs/nfsclient/nfs_clbio.c Sat Mar 17 23:00:32 2012 (r233100) +++ head/sys/fs/nfsclient/nfs_clbio.c Sat Mar 17 23:03:20 2012 (r233101) @@ -66,6 +66,7 @@ extern int ncl_numasync; extern enum nfsiod_state ncl_iodwant[NFS_MAXASYNCDAEMON]; extern struct nfsmount *ncl_iodmount[NFS_MAXASYNCDAEMON]; extern int newnfs_directio_enable; +extern int nfs_keep_dirty_on_error; int ncl_pbuf_freecnt = -1; /* start out unlimited */ @@ -348,9 +349,11 @@ ncl_putpages(struct vop_putpages_args *a pmap_qremove(kva, npages); relpbuf(bp, &ncl_pbuf_freecnt); - vnode_pager_undirty_pages(pages, rtvals, count - uio.uio_resid); - if (must_commit) - ncl_clearcommit(vp->v_mount); + if (error == 0 || !nfs_keep_dirty_on_error) { + vnode_pager_undirty_pages(pages, rtvals, count - uio.uio_resid); + if (must_commit) + ncl_clearcommit(vp->v_mount); + } return rtvals[0]; } Modified: head/sys/fs/nfsclient/nfs_clvnops.c ============================================================================== --- head/sys/fs/nfsclient/nfs_clvnops.c Sat Mar 17 23:00:32 2012 (r233100) +++ head/sys/fs/nfsclient/nfs_clvnops.c Sat Mar 17 23:03:20 2012 (r233101) @@ -241,6 +241,10 @@ int newnfs_directio_enable = 0; SYSCTL_INT(_vfs_nfs, OID_AUTO, nfs_directio_enable, CTLFLAG_RW, &newnfs_directio_enable, 0, "Enable NFS directio"); +int nfs_keep_dirty_on_error; +SYSCTL_INT(_vfs_nfs, OID_AUTO, nfs_keep_dirty_on_error, CTLFLAG_RW, + &nfs_keep_dirty_on_error, 0, "Retry pageout if error returned"); + /* * This sysctl allows other processes to mmap a file that has been opened * O_DIRECT by a process. In general, having processes mmap the file while