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 18/20] drbd: drop drbd_md_flush
Date: Tue, 1 Jul 2014 18:16:48 +0200 [thread overview]
Message-ID: <1404231410-29852-19-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>
The only user of drbd_md_flush was bm_rw(),
and it is always followed by either a drbd_md_sync(),
or an al_write_transaction(), which, if so configured,
both end up submiting a FLUSH|FUA request anyways.
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
---
drivers/block/drbd/drbd_bitmap.c | 4 +---
drivers/block/drbd/drbd_int.h | 19 -------------------
2 files changed, 1 insertion(+), 22 deletions(-)
diff --git a/drivers/block/drbd/drbd_bitmap.c b/drivers/block/drbd/drbd_bitmap.c
index 7e6f924..7303433 100644
--- a/drivers/block/drbd/drbd_bitmap.c
+++ b/drivers/block/drbd/drbd_bitmap.c
@@ -1153,9 +1153,7 @@ static int bm_rw(struct drbd_device *device, int rw, unsigned flags, unsigned la
err = -EIO; /* Disk timeout/force-detach during IO... */
now = jiffies;
- if (rw == WRITE) {
- drbd_md_flush(device);
- } else /* rw == READ */ {
+ if (rw == READ) {
b->bm_set = bm_count_bits(b);
drbd_info(device, "recounting of set bits took additional %lu jiffies\n",
jiffies - now);
diff --git a/drivers/block/drbd/drbd_int.h b/drivers/block/drbd/drbd_int.h
index a71f8bb..d85f43c 100644
--- a/drivers/block/drbd/drbd_int.h
+++ b/drivers/block/drbd/drbd_int.h
@@ -2182,25 +2182,6 @@ static inline int drbd_queue_order_type(struct drbd_device *device)
return QUEUE_ORDERED_NONE;
}
-static inline void drbd_md_flush(struct drbd_device *device)
-{
- int r;
-
- if (device->ldev == NULL) {
- drbd_warn(device, "device->ldev == NULL in drbd_md_flush\n");
- return;
- }
-
- if (test_bit(MD_NO_FUA, &device->flags))
- return;
-
- r = blkdev_issue_flush(device->ldev->md_bdev, GFP_NOIO, NULL);
- if (r) {
- set_bit(MD_NO_FUA, &device->flags);
- drbd_err(device, "meta data flush failed with status %d, disabling md-flushes\n", r);
- }
-}
-
static inline struct drbd_connection *first_connection(struct drbd_resource *resource)
{
return list_first_entry_or_null(&resource->connections,
--
1.9.1
next prev parent reply other threads:[~2014-07-01 16:18 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 ` [PATCH 10/20] drbd: short-circuit in maybe_pull_ahead Philipp Reisner
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 ` Philipp Reisner [this message]
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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