Received-SPF: softfail (google.com: domain of transitioning linux-kernel-owner@vger.kernel.org does not designate 23.128.96.19 as permitted sender) client-ip=23.128.96.19;
From:   Logan Gunthorpe <logang@deltatee.com>
To:     linux-kernel@vger.kernel.org, linux-raid@vger.kernel.org,
        Song Liu <song@kernel.org>
Cc:     Christoph Hellwig <hch@infradead.org>,
        Guoqing Jiang <guoqing.jiang@linux.dev>,
        Stephen Bates <sbates@raithlin.com>,
        Martin Oliveira <Martin.Oliveira@eideticom.com>,
        David Sloan <David.Sloan@eideticom.com>,
        Logan Gunthorpe <logang@deltatee.com>,
        Christoph Hellwig <hch@lst.de>
Date:   Wed, 20 Apr 2022 13:54:16 -0600
Message-Id: <20220420195425.34911-4-logang@deltatee.com>
In-Reply-To: <20220420195425.34911-1-logang@deltatee.com>
References: <20220420195425.34911-1-logang@deltatee.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Subject: [PATCH v2 03/12] md/raid5: Move stripe_add_to_batch_list() call out of add_stripe_bio()
Precedence: bulk

stripe_add_to_batch_list() is better done in the loop in make_request
instead of inside add_stripe_bio(). This is clearer and allows for
storing the batch_head state outside the loop in a subsequent patch.

The call to add_stripe_bio() in retry_aligned_read() is for read
and batching only applies to write. So it's impossible for batching
to happen at that call site.

No functional changes intended.

Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
---
 drivers/md/raid5.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index cda6857e6207..8e1ece5ce984 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -3534,8 +3534,6 @@ static int add_stripe_bio(struct stripe_head *sh, struct bio *bi, int dd_idx,
 	}
 	spin_unlock_irq(&sh->stripe_lock);
 
-	if (stripe_can_batch(sh))
-		stripe_add_to_batch_list(conf, sh);
 	return 1;
 
  overlap:
@@ -5955,6 +5953,9 @@ static bool raid5_make_request(struct mddev *mddev, struct bio * bi)
 			goto retry;
 		}
 
+		if (stripe_can_batch(sh))
+			stripe_add_to_batch_list(conf, sh);
+
 		if (do_flush) {
 			set_bit(STRIPE_R5C_PREFLUSH, &sh->state);
 			/* we only need flush for one stripe */
-- 
2.30.2