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linux/drivers/block/drbd
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Lars Ellenberg f9ff0da564 drbd: allow parallel flushes for multi-volume resources 
To maintain write-order fidelity accros all volumes in a DRBD resource,
the receiver of a P_BARRIER needs to issue flushes to all volumes.
We used to do this by calling blkdev_issue_flush(), synchronously,
one volume at a time.

We now submit all flushes to all volumes in parallel, then wait for all
completions, to reduce worst-case latencies on multi-volume resources.

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
2016-06-13 21:43:05 -06:00
..
drbd_actlog.c block, drivers, fs: rename REQ_FLUSH to REQ_PREFLUSH 2016-06-07 13:41:38 -06:00
drbd_bitmap.c drbd: use bio op accessors 2016-06-07 13:41:38 -06:00
drbd_debugfs.c wrappers for ->i_mutex access 2016-01-22 18:04:28 -05:00
drbd_debugfs.h drbd: debugfs: add basic hierarchy 2014-07-10 18:35:16 +02:00
drbd_int.h drbd: Implement handling of thinly provisioned storage on resync target nodes 2016-06-13 21:43:04 -06:00
drbd_interval.c drbd: use RB_DECLARE_CALLBACKS() to define augment callbacks 2014-09-18 09:00:17 -06:00
drbd_interval.h drbd: application writes may set-in-sync in protocol != C 2014-07-10 18:35:02 +02:00
drbd_main.c drbd: adjust assert in w_bitmap_io to account for BM_LOCKED_CHANGE_ALLOWED 2016-06-13 21:43:04 -06:00
drbd_nl.c drbd: fix for truncated minor number in callback command line 2016-06-13 21:43:04 -06:00
drbd_nla.c drbd: Remove drbd_wrappers.h 2014-04-30 13:46:54 -06:00
drbd_nla.h drbd: Split off netlink mandatory attribute handling into separate file 2012-11-08 16:57:45 +01:00
drbd_proc.c drbd: Move enum write_ordering_e to drbd.h 2015-11-25 09:22:00 -07:00
drbd_protocol.h drbd: Create the protocol feature THIN_RESYNC 2016-06-13 21:43:04 -06:00
drbd_receiver.c drbd: allow parallel flushes for multi-volume resources 2016-06-13 21:43:05 -06:00
drbd_req.c drbd: fix regression: protocol A sometimes synchronous, C sometimes double-latency 2016-06-13 21:43:04 -06:00
drbd_req.h drbd: De-inline drbd_should_do_remote() and drbd_should_send_out_of_sync() 2015-11-25 09:22:00 -07:00
drbd_state.c drbd: change bitmap write-out when leaving resync states 2016-06-13 21:43:03 -06:00
drbd_state.h drbd: Fix locking across all resources 2015-11-25 09:22:00 -07:00
drbd_state_change.h drbd: Backport the "events2" command 2015-11-25 09:22:00 -07:00
drbd_strings.c drbd: Move string function prototypes from linux/drbd.h to drbd_string.h 2014-02-17 16:50:37 +01:00
drbd_strings.h drbd: Move string function prototypes from linux/drbd.h to drbd_string.h 2014-02-17 16:50:37 +01:00
drbd_vli.h
drbd_worker.c drbd: Create the protocol feature THIN_RESYNC 2016-06-13 21:43:04 -06:00
Kconfig drbd: update Kconfig to match current dependencies 2012-12-06 13:08:29 +01:00
Makefile drbd: debugfs: add basic hierarchy 2014-07-10 18:35:16 +02:00