Date: Sat, 30 May 2009 19:26:36 +0000 (UTC) From: Kip Macy <kmacy@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r193110 - head/sys/cddl/contrib/opensolaris/uts/common/fs Message-ID: <200905301926.n4UJQati016840@svn.freebsd.org>
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Author: kmacy Date: Sat May 30 19:26:35 2009 New Revision: 193110 URL: http://svn.freebsd.org/changeset/base/193110 Log: work around snapshot shutdown race reported by Henri Hennebert Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/gfs.c Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/gfs.c ============================================================================== --- head/sys/cddl/contrib/opensolaris/uts/common/fs/gfs.c Sat May 30 19:23:09 2009 (r193109) +++ head/sys/cddl/contrib/opensolaris/uts/common/fs/gfs.c Sat May 30 19:26:35 2009 (r193110) @@ -564,8 +564,13 @@ gfs_file_inactive(vnode_t *vp) if (fp->gfs_parent == NULL || (vp->v_flag & V_XATTRDIR)) goto found; - dp = fp->gfs_parent->v_data; - + /* + * XXX cope with a FreeBSD-specific race wherein the parent's + * snapshot data can be freed before the parent is + */ + if ((dp = fp->gfs_parent->v_data) == NULL) + return (NULL); + /* * First, see if this vnode is cached in the parent. */
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