summaryrefslogtreecommitdiff
path: root/drivers/md/raid5.h
diff options
context:
space:
mode:
authorshli@kernel.org <shli@kernel.org>2014-12-15 04:57:03 +0300
committerNeilBrown <neilb@suse.de>2015-04-22 01:00:41 +0300
commit7a87f43405e91ca12b8770eb689dd9886f217091 (patch)
tree144c8e5d5a1c4afcef0a7a6f3d5d6c5d1bfceaac /drivers/md/raid5.h
parentda41ba65972532a04f73927c903029a7ec3bc2ed (diff)
downloadlinux-7a87f43405e91ca12b8770eb689dd9886f217091.tar.xz
raid5: track overwrite disk count
Track overwrite disk count, so we can know if a stripe is a full stripe write. Signed-off-by: Shaohua Li <shli@fusionio.com> Signed-off-by: NeilBrown <neilb@suse.de>
Diffstat (limited to 'drivers/md/raid5.h')
-rw-r--r--drivers/md/raid5.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/md/raid5.h b/drivers/md/raid5.h
index 37644e3d5293..4cc1a48127c7 100644
--- a/drivers/md/raid5.h
+++ b/drivers/md/raid5.h
@@ -210,6 +210,10 @@ struct stripe_head {
atomic_t count; /* nr of active thread/requests */
int bm_seq; /* sequence number for bitmap flushes */
int disks; /* disks in stripe */
+ int overwrite_disks; /* total overwrite disks in stripe,
+ * this is only checked when stripe
+ * has STRIPE_BATCH_READY
+ */
enum check_states check_state;
enum reconstruct_states reconstruct_state;
spinlock_t stripe_lock;