1 files changed, 7 insertions, 0 deletions

diff --git a/include/linux/raid/raid5.h b/include/linux/raid/raid5.h
index 93678f57ccbe..f0827d31ae6f 100644
--- a/include/linux/raid/raid5.h
+++ b/include/linux/raid/raid5.h
@@ -252,6 +252,8 @@ struct r6_state {
 #define STRIPE_EXPANDING        9
 #define STRIPE_EXPAND_SOURCE    10
 #define STRIPE_EXPAND_READY     11
+#define STRIPE_IO_STARTED       12 /* do not count towards 'bypass_count' */
+#define STRIPE_FULL_WRITE       13 /* all blocks are set to be overwritten */
 /*
  * Operations flags (in issue order)
  */
@@ -316,12 +318,17 @@ struct raid5_private_data {
         int                     previous_raid_disks;
 
         struct list_head        handle_list; /* stripes needing handling */
+        struct list_head        hold_list; /* preread ready stripes */
         struct list_head        delayed_list; /* stripes that have plugged requests */
         struct list_head        bitmap_list; /* stripes delaying awaiting bitmap update */
         struct bio              *retry_read_aligned; /* currently retrying aligned bios   */
         struct bio              *retry_read_aligned_list; /* aligned bios retry list  */
         atomic_t                preread_active_stripes; /* stripes with scheduled io */
         atomic_t                active_aligned_reads;
+        atomic_t                pending_full_writes; /* full write backlog */
+        int                     bypass_count; /* bypassed prereads */
+        int                     bypass_threshold; /* preread nice */
+        struct list_head        *last_hold; /* detect hold_list promotions */
 
         atomic_t                reshape_stripes; /* stripes with pending writes for reshape */
         /* unfortunately we need two cache names as we temporarily have