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2016-06-13drbd: adjust assert in w_bitmap_io to account for BM_LOCKED_CHANGE_ALLOWEDLars Ellenberg1-1/+6
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>
2016-06-13drbd: Create the protocol feature THIN_RESYNCPhilipp Reisner3-2/+17
If thinly provisioned volumes are used, during a resync the sync source tries to find out if a block is deallocated. If it is deallocated, then the resync target uses block_dev_issue_zeroout() on the range in question. 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>
2016-06-13drbd: Introduce new disk config option rs-discard-granularityPhilipp Reisner3-6/+38
As long as the value is 0 the feature is disabled. With setting it to a positive value, DRBD limits and aligns its resync requests to the rs-discard-granularity setting. If the sync source detects all zeros in such a block, the resync target discards the range on disk. 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>
2016-06-13drbd: Implement handling of thinly provisioned storage on resync target nodesPhilipp Reisner5-4/+140
If during resync we read only zeroes for a range of sectors assume that these secotors can be discarded on the sync target node. 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>
2016-06-13drbd: Kill code duplicationPhilipp Reisner1-8/+10
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>
2016-06-13drbd: change bitmap write-out when leaving resync statesLars Ellenberg2-5/+12
When leaving resync states because of disconnect, do the bitmap write-out synchronously in the drbd_disconnected() path. When leaving resync states because we go back to AHEAD/BEHIND, or because resync actually finished, or some disk was lost during resync, trigger the write-out from after_state_ch(). The bitmap write-out for resync -> ahead/behind was missing completely before. Note that this is all only an optimization to avoid double-resyncs of already completed blocks in case this node crashes. 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>
2016-06-13drbd: bitmap bulk IO: do not always suspend IOLars Ellenberg1-2/+4
The intention was to only suspend IO if some normal bitmap operation is supposed to be locked out, not always. If the bulk operation is flaged as BM_LOCKED_CHANGE_ALLOWED, we do not need to suspend IO. 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>
2016-06-12nvme: move the workaround for I/O queue-less controllers from PCIe to coreChristoph Hellwig2-12/+15
We want to apply this to Fabrics drivers as well, so move it to common code. Reviewed-by: Jay Freyensee <james.p.freyensee@intel.com> Reviewed-by: Sagi Grimberg <sagi@grimberg.me> Tested-by: Ming Lin <ming.l@ssi.samsung.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Keith Busch <keith.busch@intel.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-06-12nvme: factor out a add nvme_is_write helperChristoph Hellwig2-3/+7
Centralize the check if a given NVMe command reads or writes data. Reviewed-by: Sagi Grimberg <sagi@grimberg.me> Reviewed-by: Jay Freyensee <james.p.freyensee@intel.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Keith Busch <keith.busch@intel.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-06-12nvme: allow for size limitations from transport driversChristoph Hellwig1-2/+5
Some transport drivers may have a lower transfer size than the controller. So allow the transport to set it in the controller max_hw_sectors. Reviewed-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Keith Busch <keith.busch@intel.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-06-12nvme.h: add constants for PSDT and FUSE valuesJames Smart1-0/+23
Signed-off-by: James Smart <james.smart@broadcom.com> Reviewed-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Keith Busch <keith.busch@intel.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-06-12nvme.h: add AER constantsChristoph Hellwig1-0/+6
Reviewed-by: Jay Freyensee <james.p.freyensee@intel.com> Reviewed-by: Sagi Grimberg <sagi@grimberg.me> Reviewed-by: Ming Lin <ming.l@ssi.samsung.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Keith Busch <keith.busch@intel.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-06-12nvme.h: add NVM command set SQE/CQE size definesChristoph Hellwig1-2/+9
Reviewed-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Keith Busch <keith.busch@intel.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-06-12nvme.h: Add get_log_page command strucureArmen Baloyan1-0/+19
Add get_log_page command structure and a corresponding entry in nvme_command union Signed-off-by: Armen Baloyan <armenx.baloyan@intel.com> Reviewed-by: Jay Freyensee <james.p.freyensee@intel.com> Reviewed--by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Keith Busch <keith.busch@intel.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-06-12nvme.h: add RTD3R, RTD3E and OAES fieldsChristoph Hellwig1-1/+4
These have been added in NVMe 1.2 and we'll need at least oaes for the NVMe target driver. Reviewed-by: Sagi Grimberg <sagi@grimberg.me> Reviewed-by: Jay Freyensee <james.p.freyensee@intel.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Keith Busch <keith.busch@intel.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-06-11bcache: Remove deprecated create_workqueueBhaktipriya Shridhar1-2/+3
alloc_workqueue replaces deprecated create_workqueue(). Dedicated workqueues have been used since bcache_wq and moving_gc_wq are workqueues for writes and are being used on a memory reclaim path. WQ_MEM_RECLAIM has been set to ensure forward progress under memory pressure. Since there are only a fixed number of work items, explicit concurrency limit is unnecessary here. Signed-off-by: Bhaktipriya Shridhar <bhaktipriya96@gmail.com> Acked-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-06-09block: add a separate operation type for secure eraseChristoph Hellwig12-65/+63
Instead of overloading the discard support with the REQ_SECURE flag. Use the opportunity to rename the queue flag as well, and remove the dead checks for this flag in the RAID 1 and RAID 10 drivers that don't claim support for secure erase. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-06-08mg_disk: fix enum REQ_OP_ kbuild errorMike Christie1-5/+2
Because we define WRITE/READ as REQ_OPs, we cannot do switch (rq_data_dir(request)) case READ .... case WRITE ... without getting warnings about handling other REQ_OPs. This just has mq_disk do a if/else like it does in other places. Signed-off-by: Mike Christie <mchristi@redhat.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-06-08NVMe: Fix removal in case of active namespace list scanning methodSunad Bhandary1-6/+15
In case of the active namespace list scanning method, a namespace that is detached is not removed from the host if it was the last entry in the list. Fix this by adding a scan to validate namespaces greater than the value of prev. This also handles the case of removing namespaces whose value exceed the device's reported number of namespaces. Signed-off-by: Sunad Bhandary S <sunad.s@samsung.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-06-07nvme: use UINT_MAX for max discard sectorsMinfei Huang1-1/+1
It's more elegant to use UINT_MAX to represent the max value of type unsigned int. So replace the actual value by using this define. Signed-off-by: Minfei Huang <mnghuan@gmail.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-06-07nvme: move nvme_cancel_request() to common codeMing Lin3-16/+18
So it can be used by fabrics driver also. Signed-off-by: Ming Lin <ming.l@samsung.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Keith Busch <keith.bsuch@intel.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-06-07nvme: update and rename nvme_cancel_io to nvme_cancel_requestMing Lin1-4/+4
nvme_cancel_io is a bit confusing (given the distinction of io/admin), so rename it to nvme_cancel_request. And update it a bit to pass in struct nvme_ctrl, so it can be used by Fabrics driver also. Signed-off-by: Ming Lin <ming.l@samsung.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Suggested-by: Sagi Grimberg <sagi@grimberg.me> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Keith Busch <keith.bsuch@intel.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-06-07block, drivers, fs: rename REQ_FLUSH to REQ_PREFLUSHMike Christie39-98/+102
To avoid confusion between REQ_OP_FLUSH, which is handled by request_fn drivers, and upper layers requesting the block layer perform a flush sequence along with possibly a WRITE, this patch renames REQ_FLUSH to REQ_PREFLUSH. Signed-off-by: Mike Christie <mchristi@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-06-07block: do not use REQ_FLUSH for tracking flush supportMike Christie1-23/+24
The last patch added a REQ_OP_FLUSH for request_fn drivers and the next patch renames REQ_FLUSH to REQ_PREFLUSH which will be used by file systems and make_request_fn drivers so they can send a write/flush combo. This patch drops xen's use of REQ_FLUSH to track if it supports REQ_OP_FLUSH requests, so REQ_FLUSH can be deleted. Signed-off-by: Mike Christie <mchristi@redhat.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Juergen Gross <kernel@pfupf.net> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-06-07block, drivers: add REQ_OP_FLUSH operationMike Christie20-31/+40
This adds a REQ_OP_FLUSH operation that is sent to request_fn based drivers by the block layer's flush code, instead of sending requests with the request->cmd_flags REQ_FLUSH bit set. Signed-off-by: Mike Christie <mchristi@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-06-07block, fs, drivers: remove REQ_OP compat defs and related codeMike Christie6-63/+46
This patch drops the compat definition of req_op where it matches the rq_flag_bits definitions, and drops the related old and compat code that allowed users to set either the op or flags for the operation. We also then store the operation in the bi_rw/cmd_flags field similar to how we used to store the bio ioprio where it sat in the upper bits of the field. Signed-off-by: Mike Christie <mchristi@redhat.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-06-07block, drivers, fs: shrink bi_rw from long to intMike Christie6-9/+9
We don't need bi_rw to be so large on 64 bit archs, so reduce it to unsigned int. Signed-off-by: Mike Christie <mchristi@redhat.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-06-07block: move bio io prio to a new fieldMike Christie2-15/+4
In the next patch, we move drop the compat code and make the op a separate value that is hidden in bi_rw. To give the op and rq bits flags room to grow this moves prio to its own field. Signed-off-by: Mike Christie <mchristi@redhat.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-06-07ide cd: do not set REQ_WRITE on requests.Mike Christie1-3/+0
The block layer will set the correct READ/WRITE operation flags/fields when creating a request, so there is not need for drivers to set the REQ_WRITE flag. Signed-off-by: Mike Christie <mchristi@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-06-07blktrace: use op accessorsMike Christie4-42/+65
Have blktrace use the req/bio op accessor to get the REQ_OP. Signed-off-by: Mike Christie <mchristi@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-06-07drivers: use req op accessorMike Christie14-34/+43
The req operation REQ_OP is separated from the rq_flag_bits definition. This converts the block layer drivers to use req_op to get the op from the request struct. Signed-off-by: Mike Christie <mchristi@redhat.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-06-07block: convert is_sync helpers to use REQ_OPs.Mike Christie4-11/+11
This patch converts the is_sync helpers to use separate variables for the operation and flags. Signed-off-by: Mike Christie <mchristi@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-06-07block: convert merge/insert code to check for REQ_OPs.Mike Christie3-15/+17
This patch converts the block layer merging code to use separate variables for the operation and flags, and to check req_op for the REQ_OP. Signed-off-by: Mike Christie <mchristi@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-06-07blkg_rwstat: separate op from flagsMike Christie2-26/+36
The bio and request operation and flags are going to be separate definitions, so we cannot pass them in as a bitmap. This patch converts the blkg_rwstat code and its caller, cfq, to pass in the values separately. Signed-off-by: Mike Christie <mchristi@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-06-07block: prepare elevator to use REQ_OPs.Mike Christie4-9/+8
This patch converts the elevator code to use separate variables for the operation and flags, and to check req_op for the REQ_OP. Signed-off-by: Mike Christie <mchristi@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-06-07block: prepare mq request creation to use REQ_OPsMike Christie1-14/+16
This patch modifies the blk mq request creation code to use separate variables for the operation and flags, because in the the next patches the struct request users will be converted like was done for bios. Signed-off-by: Mike Christie <mchristi@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-06-07block: prepare request creation/destruction code to use REQ_OPsMike Christie1-25/+29
This patch prepares *_get_request/*_put_request and freed_request, to use separate variables for the operation and flags. In the next patches the struct request users will be converted like was done for bios where the op and flags are set separately. Signed-off-by: Mike Christie <mchristi@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-06-07block: copy bio op to request opMike Christie1-3/+3
The bio users should now always be setting up the bio op. This patch has the block layer copy that to the request. Signed-off-by: Mike Christie <mchristi@redhat.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-06-07xen: use bio op accessorsMike Christie1-12/+15
Separate the op from the rq_flag_bits and have xen set/get the bio using bio_set_op_attrs/bio_op. Signed-off-by: Mike Christie <mchristi@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-06-07target: use bio op accessorsMike Christie2-16/+15
Separate the op from the rq_flag_bits and have the target layer set/get the bio using bio_set_op_attrs/bio_op. Signed-off-by: Mike Christie <mchristi@redhat.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-06-07md: use bio op accessorsMike Christie10-84/+88
Separate the op from the rq_flag_bits and have md set/get the bio using bio_set_op_attrs/bio_op. Signed-off-by: Mike Christie <mchristi@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-06-07drbd: use bio op accessorsMike Christie6-42/+59
Separate the op from the rq_flag_bits and have drbd set/get the bio using bio_set_op_attrs/bio_op. Signed-off-by: Mike Christie <mchristi@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-06-07bcache: use bio op accessorsMike Christie7-28/+31
Separate the op from the rq_flag_bits and have bcache set/get the bio using bio_set_op_attrs/bio_op. Signed-off-by: Mike Christie <mchristi@redhat.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-06-07dm: use bio op accessorsMike Christie14-80/+99
Separate the op from the rq_flag_bits and have dm set/get the bio using bio_set_op_attrs/bio_op. Signed-off-by: Mike Christie <mchristi@redhat.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-06-07dm: pass dm stats data dir instead of bi_rwMike Christie2-14/+16
It looks like dm stats cares about the data direction (READ vs WRITE) and does not need the bio/request flags. Commands like REQ_FLUSH, REQ_DISCARD and REQ_WRITE_SAME are currently always set with REQ_WRITE, so the extra check for REQ_DISCARD in dm_stats_account_io is not needed. This patch has it use the bio and request data_dir helpers instead of accessing the bi_rw/cmd_flags directly. This makes the next patches that remove the operation from the cmd_flags and bi_rw easier, because we will no longer have the REQ_WRITE bit set for operations like discards. Signed-off-by: Mike Christie <mchristi@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-06-07pm: use bio op accessorsMike Christie1-12/+18
Separate the op from the rq_flag_bits and have the pm code set/get the bio using bio_set_op_attrs/bio_op. Signed-off-by: Mike Christie <mchristi@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-06-07ocfs2: use bio op accessorsMike Christie1-4/+6
Separate the op from the rq_flag_bits and have ocfs2 set/get the bio using bio_set_op_attrs/bio_op. Signed-off-by: Mike Christie <mchristi@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-06-07nilfs: use bio op accessorsMike Christie1-8/+9
Separate the op from the rq_flag_bits and have nilfs set/get the bio using bio_set_op_attrs/bio_op. Signed-off-by: Mike Christie <mchristi@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@suse.com> Acked-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-06-07mpage: use bio op accessorsMike Christie1-20/+20
Separate the op from the rq_flag_bits and have the mpage code set/get the bio using bio_set_op_attrs/bio_op. Signed-off-by: Mike Christie <mchristi@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-06-07hfsplus: use bio op accessorsMike Christie4-11/+16
Separate the op from the rq_flag_bits and have gfs2 set/get the bio using bio_set_op_attrs/bio_op. Signed-off-by: Mike Christie <mchristi@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Jens Axboe <axboe@fb.com>
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