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| author | Lars Ellenberg <lars.ellenberg@linbit.com> | 2014-05-05 23:42:24 +0200 |
|---|---|---|
| committer | Philipp Reisner <philipp.reisner@linbit.com> | 2014-07-10 18:35:14 +0200 |
| commit | 21ae5d7f95aa1a64f35b03c91f8714ced3ab61a9 (patch) | |
| tree | 9e5d90197118d8110c9a65f07f639c5eae000044 /drivers/block/drbd/drbd_worker.c | |
| parent | ad3fee790088d36ad862e31535b5b99c25adeef4 (diff) | |
| download | talos-op-linux-21ae5d7f95aa1a64f35b03c91f8714ced3ab61a9.tar.gz talos-op-linux-21ae5d7f95aa1a64f35b03c91f8714ced3ab61a9.zip | |
drbd: track timing details of peer_requests
To be able to present timing details in debugfs,
we need to track preparation/submit times of peer requests.
Track peer request flags early,
before they are put on the epoch_entry lists.
Waiting for activity log transactions may be a major latency factor.
We want to be able to present the peer_request state accurately in
debugfs, and what it is waiting for.
Consistently mark/unmark peer requests with EE_CALL_AL_COMPLETE_IO.
Set it only *after* calling drbd_al_begin_io(),
clear it as soon as we call drbd_al_complete_io().
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
Diffstat (limited to 'drivers/block/drbd/drbd_worker.c')
| -rw-r--r-- | drivers/block/drbd/drbd_worker.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/block/drbd/drbd_worker.c b/drivers/block/drbd/drbd_worker.c index 48975a264985..b908e9b3f63e 100644 --- a/drivers/block/drbd/drbd_worker.c +++ b/drivers/block/drbd/drbd_worker.c @@ -132,6 +132,7 @@ void drbd_endio_write_sec_final(struct drbd_peer_request *peer_req) __releases(l i = peer_req->i; do_al_complete_io = peer_req->flags & EE_CALL_AL_COMPLETE_IO; block_id = peer_req->block_id; + peer_req->flags &= ~EE_CALL_AL_COMPLETE_IO; spin_lock_irqsave(&device->resource->req_lock, flags); device->writ_cnt += peer_req->i.size >> 9; |
