From: Yuri Tikhonov <yur@emcraft.com>
To: "Williams, Dan J" <dan.j.williams@intel.com>
Cc: Neil Brown <neilb@suse.de>, Wolfgang Denk <wd@denx.de>,
Detlev Zundel <dzu@denx.de>,
linux-raid@vger.kernel.org
Subject: [md-raid6-accel PATCH 04/12] md: common handle_stripe6() infrastructure
Date: Tue, 4 Dec 2007 14:30:38 +0300 [thread overview]
Message-ID: <200712041430.38806.yur@emcraft.com> (raw)
We utilize get_stripe_work() to find new work to run. This function is shared
with RAID-5. The only RAID-5 specific operation there is PREXOR. Then we call
raid_run_ops() to process the requests pending.
Signed-off-by: Yuri Tikhonov <yur@emcraft.com>
Signed-off-by: Mikhail Cherkashin <mike@emcraft.com>
--
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index af77291..2c6fee0 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -3658,13 +3658,15 @@ static void handle_stripe6(struct stripe_head *sh, struct page *tmp_page)
struct stripe_head_state s;
struct r6_state r6s;
struct r5dev *dev, *pdev, *qdev;
+ unsigned long pending = 0;
r6s.qd_idx = raid6_next_disk(pd_idx, disks);
- pr_debug("handling stripe %llu, state=%#lx cnt=%d, "
- "pd_idx=%d, qd_idx=%d\n",
- (unsigned long long)sh->sector, sh->state,
- atomic_read(&sh->count), pd_idx, r6s.qd_idx);
memset(&s, 0, sizeof(s));
+ pr_debug("handling stripe %llu, state=%#lx, cnt=%d, "
+ "pd_idx=%d, qd_idx=%d "
+ "ops=%lx:%lx:%lx\n", (unsigned long long)sh->sector, sh->state,
+ atomic_read(&sh->count), sq->pd_idx, r6s.qd_idx,
+ sh->ops.pending, sh->ops.ack, sh->ops.complete);
spin_lock(&sq->lock);
clear_bit(STRIPE_HANDLE, &sh->state);
@@ -3845,8 +3847,14 @@ static void handle_stripe6(struct stripe_head *sh, struct page *tmp_page)
if (s.expanding && s.locked == 0)
handle_stripe_expansion(conf, sh, &r6s);
+ if (sh->ops.count)
+ pending = get_stripe_work(sh);
+
spin_unlock(&sq->lock);
+ if (pending)
+ raid_run_ops(sh, pending);
+
return_io(return_bi);
for (i=disks; i-- ;) {
--
Yuri Tikhonov, Senior Software Engineer
Emcraft Systems, www.emcraft.com
reply other threads:[~2007-12-04 11:30 UTC|newest]
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