From: Philipp Reisner <philipp.reisner@linbit.com>
To: linux-kernel@vger.kernel.org, Jens Axboe <axboe@kernel.dk>
Cc: drbd-dev@lists.linbit.com
Subject: [PATCH 10/20] drbd: short-circuit in maybe_pull_ahead
Date: Tue, 1 Jul 2014 18:16:40 +0200 [thread overview]
Message-ID: <1404231410-29852-11-git-send-email-philipp.reisner@linbit.com> (raw)
In-Reply-To: <1404231410-29852-1-git-send-email-philipp.reisner@linbit.com>
From: Lars Ellenberg <lars.ellenberg@linbit.com>
If we already "pulled ahead", we can short-circuit,
and avoid logging the same messages over and over again.
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
---
drivers/block/drbd/drbd_req.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/block/drbd/drbd_req.c b/drivers/block/drbd/drbd_req.c
index f07a724..3824d5c 100644
--- a/drivers/block/drbd/drbd_req.c
+++ b/drivers/block/drbd/drbd_req.c
@@ -899,6 +899,9 @@ static void maybe_pull_ahead(struct drbd_device *device)
connection->agreed_pro_version < 96)
return;
+ if (on_congestion == OC_PULL_AHEAD && device->state.conn == C_AHEAD)
+ return; /* nothing to do ... */
+
/* If I don't even have good local storage, we can not reasonably try
* to pull ahead of the peer. We also need the local reference to make
* sure device->act_log is there.
--
1.9.1
next prev parent reply other threads:[~2014-07-01 16:21 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-01 16:16 [PATCH 00/20] RFC DRBD fixes Philipp Reisner
2014-07-01 16:16 ` [PATCH 01/20] drbd: drop wrong debugging aid Philipp Reisner
2014-07-01 16:16 ` [PATCH 02/20] drbd: silence -Wmissing-prototypes warnings Philipp Reisner
2014-07-01 16:16 ` [PATCH 03/20] drbd: Remove unnecessary/unused code Philipp Reisner
2014-07-01 16:16 ` [PATCH 04/20] drbd: fix bogus resync stats in /proc/drbd Philipp Reisner
2014-07-01 16:16 ` [PATCH 05/20] drbd: don't implicitly resize Diskless node beyond end of device Philipp Reisner
2014-07-01 16:16 ` [PATCH 06/20] drbd: implement csums-after-crash-only Philipp Reisner
2014-07-01 16:16 ` [PATCH 07/20] drbd: Limit the time we are waiting for the first packet on an accepted socket Philipp Reisner
2014-07-01 16:16 ` [PATCH 08/20] drbd: New net configuration option socket-check-timeout Philipp Reisner
2014-07-01 16:16 ` [PATCH 09/20] drbd: application writes may set-in-sync in protocol != C Philipp Reisner
2014-07-01 16:16 ` Philipp Reisner [this message]
2014-07-01 16:16 ` [PATCH 11/20] drivers/block: Use RCU_INIT_POINTER(x, NULL) in drbd/drbd_state.c Philipp Reisner
2014-07-01 16:16 ` [PATCH 12/20] block: Convert last uses of __FUNCTION__ to __func__ Philipp Reisner
2014-07-01 16:16 ` [PATCH 13/20] drbd: improve resync request throttling due to sendbuf size Philipp Reisner
2014-07-01 16:16 ` [PATCH 14/20] drbd: clear CRASHED_PRIMARY only after successful resync Philipp Reisner
2014-07-01 16:16 ` [PATCH 15/20] drbd: cosmetic: change all printk(level, ...) to pr_<level>(...) Philipp Reisner
2014-07-01 16:30 ` Joe Perches
2014-07-02 9:58 ` [Drbd-dev] " Philipp Reisner
2014-07-01 16:16 ` [PATCH 16/20] drbd: drbd_rs_number_requests: fix unit mismatch in comparison Philipp Reisner
2014-07-01 16:16 ` [PATCH 17/20] drbd: add drbd_queue_work_if_unqueued helper Philipp Reisner
2014-07-01 16:16 ` [PATCH 18/20] drbd: drop drbd_md_flush Philipp Reisner
2014-07-01 16:16 ` [PATCH 19/20] drbd: consistently use list_add_tail for peer_request tracking Philipp Reisner
2014-07-01 16:16 ` [PATCH 20/20] drbd: also keep track of trim -> zero-out fallback peer_requests Philipp Reisner
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