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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