linux.git/drivers/block/drbd/drbd_req.c, branch v2.6.39

drbd: drop code present under #ifdef which is relevant to 2.6.28 and below

2011-03-10T10:48:21+00:00

Signed-off-by: Or Gerlitz 
Signed-off-by: Philipp Reisner 
Signed-off-by: Lars Ellenberg

drbd: Implemented real timeout checking for request processing time

2011-03-10T10:48:16+00:00

Signed-off-by: Philipp Reisner 
Signed-off-by: Lars Ellenberg

drbd: Removed left over, now wrong comments

2011-03-10T10:48:09+00:00

Signed-off-by: Philipp Reisner 
Signed-off-by: Lars Ellenberg

drbd: fix potential imbalance of ap_in_flight

2011-03-10T10:48:06+00:00

When we receive a barrier ack, we walk the ring list of drbd requests
in the transfer log of the respective epoch, do some housekeeping,
and free those objects.

We tried to keep epochs of mirrored and unmirrored drbd requests
separate, and assert that no local-only requests are present in a
barrier_acked epoch.

It turns out that this has quite a number of corner cases and would
add bloated code without functional benefit.

We now revert the (insufficient) commits
 drbd: Fixed an issue with AHEAD -> SYNC_SOURCE transitions
 drbd: Ensure that an epoch contains only requests of one kind
and instead fix the processing of barrier acks to cope with
a mix of local-only and mirrored requests.

Signed-off-by: Philipp Reisner 
Signed-off-by: Lars Ellenberg

drbd: Ensure that an epoch contains only requests of one kind

2011-03-10T10:45:42+00:00

The assert in drbd_req.c:755 forces us to have only requests of
one kind in an epoch. The two kinds we distinguish here are:
local-only or mirrored.

Signed-off-by: Philipp Reisner 
Signed-off-by: Lars Ellenberg

drbd: Nothing should stop SyncSource -> Ahead transitions

2011-03-10T10:45:34+00:00

Signed-off-by: Philipp Reisner 
Signed-off-by: Lars Ellenberg

drbd: Be more careful with SyncSource -> Ahead transitions

2011-03-10T10:45:26+00:00

We may not get from SyncSource to Ahead if we have sent some
P_RS_DATA_REPLY packets to the peer and are waiting for
P_WRITE_ACK.

Again, this is not relevant for proper tuned systems, but makes
sure that the not-tuned system does not get diverging bitmaps.

Signed-off-by: Philipp Reisner 
Signed-off-by: Lars Ellenberg

drbd: Documenting drbd_should_do_remote() and drbd_should_send_oos()

2011-03-10T10:43:32+00:00

Signed-off-by: Philipp Reisner 
Signed-off-by: Lars Ellenberg

drbd: Use the standard bool, true, and false keywords

2011-03-10T10:36:24+00:00

Signed-off-by: Philipp Reisner 
Signed-off-by: Lars Ellenberg

drbd: Get rid of unnecessary macros (2)

2011-03-10T10:36:15+00:00

The FAULT_ACTIVE macro just wraps the drbd_insert_fault macro for no
apparent reason.

Signed-off-by: Philipp Reisner 
Signed-off-by: Lars Ellenberg