BMC/Intel-BMC/linux.git/drivers/block/drbd/drbd_int.h, branch dev

writeback: separate out include/linux/backing-dev-defs.h

2015-06-02T14:33:34+00:00

With the planned cgroup writeback support, backing-dev related declarations will be more widely used across block and cgroup; unfortunately, including backing-dev.h from include/linux/blkdev.h makes cyclic include dependency quite likely. This patch separates out backing-dev-defs.h which only has the essential definitions and updates blkdev.h to include it. c files which need access to more backing-dev details now include backing-dev.h directly. This takes backing-dev.h off the common include dependency chain making it a lot easier to use it across block and cgroup. v2: fs/fat build failure fixed. Signed-off-by: Tejun Heo Reviewed-by: Jan Kara Cc: Jens Axboe Signed-off-by: Jens Axboe

drbd: Remove an useless copy of kernel_setsockopt()

2014-11-10T16:27:43+00:00

Old backward-compat cruft Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg Signed-off-by: Jens Axboe

drbd: Only use drbd_msg_put_info() in drbd_nl.c

2014-11-10T16:27:33+00:00

Avoid generic netlink calls in other parts of the code base. Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg Signed-off-by: Jens Axboe

drbd: Minor cleanups

2014-11-10T16:27:30+00:00

. Update comments . drbd_set_{in,out_of}_sync(): Remove unused parameters . Move common code into adm_del_resource() . Redefine ERR_MINOR_EXISTS -> ERR_MINOR_OR_VOLUME_EXISTS Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg Signed-off-by: Jens Axboe

drbd: Get rid of the __no_warn and __cond_lock macros

2014-09-11T14:41:29+00:00

These macros can easily be replaced with its definition. Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg Signed-off-by: Jens Axboe

drbd: Use consistent names for all the bi_end_io callbacks

2014-09-11T14:41:29+00:00

Now they follow the _endio naming sheme. Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg Signed-off-by: Jens Axboe

drbd: Use better variable names

2014-09-11T14:41:29+00:00

Rename local variable 'ds' to 'disk_state' or 'data_size'. 'dgs' to 'digest_size' Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg Signed-off-by: Jens Axboe

drbd: debugfs: add callback_history

2014-07-10T16:35:18+00:00

Add a per-connection worker thread callback_history with timing details, call site and callback function. Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg

drbd: debugfs: Add in_flight_summary

2014-07-10T16:35:17+00:00

* Add details about pending meta data operations to in_flight_summary. * Report number of requests waiting for activity log transactions. * timing details of peer_requests to in_flight_summary. * FLUSH details DRBD devides the incoming request stream into "epochs", in which peers are allowed to re-order writes independendly. These epochs are separated by P_BARRIER on the replication link. Such barrier packets, depending on configuration, may cause the receiving side to drain the lower level device request queues and call blkdev_issue_flush(). This is known to be an other major source of latency in DRBD. Track timing details of calls to blkdev_issue_flush(), and add them to in_flight_summary. * data socket stats To be able to diagnose bottlenecks and root causes of "slow" IO on DRBD, it is useful to see network buffer stats along with the timing details of requests, peer requests, and meta data IO. * pending bitmap IO timing details to in_flight_summary. Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg

drbd: debugfs: add basic hierarchy

2014-07-10T16:35:16+00:00

Add new debugfs hierarchy /sys/kernel/debug/ drbd/ resources/ $resource_name/connections/peer/$volume_number/ $resource_name/volumes/$volume_number/ minors/$minor_number -> ../resources/$resource_name/volumes/$volume_number/ Followup commits will populate this hierarchy with files containing statistics, diagnostic information and some attribute data. Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg