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-rw-r--r--drivers/md/raid5.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/md/raid5.h b/drivers/md/raid5.h
index ed8e1362ab36..461df197d157 100644
--- a/drivers/md/raid5.h
+++ b/drivers/md/raid5.h
@@ -322,6 +322,11 @@ enum r5dev_flags {
* data and parity being written are in the journal
* device
*/
+ R5_OrigPageUPTDODATE, /* with write back cache, we read old data into
+ * dev->orig_page for prexor. When this flag is
+ * set, orig_page contains latest data in the
+ * raid disk.
+ */
};
/*
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