[XFS] Shutdown the filesystem if all device paths have gone. Made

shutdown vop flags consistent with sync vop flags declarations too.

SGI-PV: 939911
SGI-Modid: xfs-linux-melb:xfs-kern:26096a

Signed-off-by: Nathan Scott <nathans@sgi.com>

1 files changed, 16 insertions, 0 deletions

diff --git a/fs/xfs/linux-2.6/xfs_vnode.c b/fs/xfs/linux-2.6/xfs_vnode.c
index d27c25b27ccd..f17e39cff230 100644
--- a/fs/xfs/linux-2.6/xfs_vnode.c
+++ b/fs/xfs/linux-2.6/xfs_vnode.c
@@ -54,6 +54,22 @@ vn_iowake(
                 wake_up(vptosync(vp));
 }
 
+/*
+ * Volume managers supporting multiple paths can send back ENODEV when the
+ * final path disappears.  In this case continuing to fill the page cache
+ * with dirty data which cannot be written out is evil, so prevent that.
+ */
+void
+vn_ioerror(
+        struct vnode    *vp,
+        int             error,
+        char            *f,
+        int             l)
+{
+        if (unlikely(error == -ENODEV))
+                VFS_FORCE_SHUTDOWN(vp->v_vfsp, SHUTDOWN_DEVICE_REQ, f, l);
+}
+
 struct vnode *
 vn_initialize(
         struct inode    *inode)