Date: Thu, 11 Jul 2013 04:47:44 +0000 (UTC) From: Konstantin Belousov <kib@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-9@freebsd.org Subject: svn commit: r253183 - stable/9/sys/fs/nullfs Message-ID: <201307110447.r6B4liXR024731@svn.freebsd.org>
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Author: kib Date: Thu Jul 11 04:47:44 2013 New Revision: 253183 URL: http://svnweb.freebsd.org/changeset/base/253183 Log: MFC r252714: The tvp vnode on rename is usually unlinked. Drop the cached null vnode for tvp to allow the free of the lower vnode, if needed. PR: kern/180236 Modified: stable/9/sys/fs/nullfs/null_vnops.c Directory Properties: stable/9/sys/ (props changed) stable/9/sys/fs/ (props changed) Modified: stable/9/sys/fs/nullfs/null_vnops.c ============================================================================== --- stable/9/sys/fs/nullfs/null_vnops.c Thu Jul 11 03:57:53 2013 (r253182) +++ stable/9/sys/fs/nullfs/null_vnops.c Thu Jul 11 04:47:44 2013 (r253183) @@ -554,6 +554,7 @@ null_rename(struct vop_rename_args *ap) struct vnode *fvp = ap->a_fvp; struct vnode *fdvp = ap->a_fdvp; struct vnode *tvp = ap->a_tvp; + struct null_node *tnn; /* Check for cross-device rename. */ if ((fvp->v_mount != tdvp->v_mount) || @@ -568,7 +569,11 @@ null_rename(struct vop_rename_args *ap) vrele(fvp); return (EXDEV); } - + + if (tvp != NULL) { + tnn = VTONULL(tvp); + tnn->null_flags |= NULLV_DROP; + } return (null_bypass((struct vop_generic_args *)ap)); }
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