1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/md/raid5.h b/drivers/md/raid5.h
index 01ad8ae8f578..bc72cd4be5f8 100644
--- a/drivers/md/raid5.h
+++ b/drivers/md/raid5.h
@@ -232,7 +232,7 @@ struct stripe_head {
                  */
                 struct bio      req, rreq;
                 struct bio_vec  vec, rvec;
-                struct page     *page;
+                struct page     *page, *orig_page;
                 struct bio      *toread, *read, *towrite, *written;
                 sector_t        sector;                 /* sector of this page */
                 unsigned long   flags;
@@ -299,6 +299,7 @@ enum r5dev_flags {
                          * data in, and now is a good time to write it out.
                          */
         R5_Discard,     /* Discard the stripe */
+        R5_SkipCopy,    /* Don't copy data from bio to stripe cache */
 };
 
 /*
@@ -436,6 +437,7 @@ struct r5conf {
         atomic_t                pending_full_writes; /* full write backlog */
         int                     bypass_count; /* bypassed prereads */
         int                     bypass_threshold; /* preread nice */
+        int                     skip_copy; /* Don't copy data from bio to stripe cache */
         struct list_head        *last_hold; /* detect hold_list promotions */
 
         atomic_t                reshape_stripes; /* stripes with pending writes for reshape */