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| author | Shaohua Li <shli@kernel.org> | 2013-11-14 15:16:17 +1100 |
|---|---|---|
| committer | NeilBrown <neilb@suse.de> | 2013-11-19 15:18:22 +1100 |
| commit | 4bda556aea1d2916260326c6afa77b84a1f1345a (patch) | |
| tree | 5233a0470d29eb5976ec9f6296ef129adf097ed8 /drivers/md/raid5.h | |
| parent | 566c09c53455d7c4f1130928ef8071da1a24ea65 (diff) | |
| download | op-kernel-dev-4bda556aea1d2916260326c6afa77b84a1f1345a.zip op-kernel-dev-4bda556aea1d2916260326c6afa77b84a1f1345a.tar.gz | |
raid5: relieve lock contention in get_active_stripe()
track empty inactive list count, so md_raid5_congested() can use it to make
decision.
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.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/md/raid5.h b/drivers/md/raid5.h index a9e443a..e440738 100644 --- a/drivers/md/raid5.h +++ b/drivers/md/raid5.h @@ -475,6 +475,7 @@ struct r5conf { */ atomic_t active_stripes; struct list_head inactive_list[NR_STRIPE_HASH_LOCKS]; + atomic_t empty_inactive_list_nr; struct llist_head released_stripes; wait_queue_head_t wait_for_stripe; wait_queue_head_t wait_for_overlap; |
