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* blk-mq: actually hook up defer list when running requestsOmar Sandoval2016-06-091-1/+1
| | | | | | | | | | | | | | | If ->queue_rq() returns BLK_MQ_RQ_QUEUE_OK, we use continue and skip over the rest of the loop body. However, dptr is assigned later in the loop body, and the BLK_MQ_RQ_QUEUE_OK case is exactly the case that we'd want it for. NVMe isn't actually using BLK_MQ_F_DEFER_ISSUE yet, nor is any other in-tree driver, but if the code's going to be there, it might as well work. Fixes: 74c450521dd8 ("blk-mq: add a 'list' parameter to ->queue_rq()") Signed-off-by: Omar Sandoval <osandov@fb.com> Signed-off-by: Jens Axboe <axboe@fb.com>
* block: better packing for struct requestChristoph Hellwig2016-06-091-3/+2
| | | | | | | | Keep the 32-bit CPU and cmd_type flags together to avoid holes on 64-bit architectures. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@fb.com>
* ext4: use bio op helprs in ext4 crypto codeMike Christie2016-06-081-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | This was missed from my last patchset. This patch has ext4 crypto code use the bio op helper to set the operation. The operation (discard, write, writesame, etc) is now defined seperately from the other REQ bits. They still share the bi_rw field to save space, so we use these helpers so modules do not have to worry about setting/overwriting info. Jens, I am not sure how you handle patches on top of patches in the next branches. If you merge patches that fix issues in previous patches in next, then this patch could be part of commit 95fe6c1a209ef89d9f94dd04a0ad72be1487d5d5 Author: Mike Christie <mchristi@redhat.com> Date: Sun Jun 5 14:31:48 2016 -0500 block, fs, mm, drivers: use bio set/get op accessors Signed-off-by: Mike Christie <mchristi@redhat.com> Signed-off-by: Jens Axboe <axboe@fb.com>
* cfq-iosched: Convert to use highres timersJan Kara2016-06-081-9/+12
| | | | | | Reviewed-by: Jeff Moyer <jmoyer@redhat.com> Signed-off-by: Jan Kara <jack@suse.com> Signed-off-by: Jens Axboe <axboe@fb.com>
* cfq-iosched: Expose microsecond interfacesJeff Moyer2016-06-081-0/+40
| | | | | | | | | Expose interfaces to tune time slices of CFQ IO scheduler in microseconds. Signed-off-by: Jeff Moyer <jmoyer@redhat.com> Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Jens Axboe <axboe@fb.com>
* cfq-iosched: Convert from jiffies to nanosecondsJeff Moyer2016-06-081-137/+136
| | | | | | | | | | | | Convert all time-keeping in CFQ IO scheduler from jiffies to nanoseconds so that we can later make the intervals more fine-grained than jiffies. One jiffie is several miliseconds and even for today's rotating disks that is a noticeable amount of time and thus we leave disk unnecessarily idle. Signed-off-by: Jeff Moyer <jmoyer@redhat.com> Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Jens Axboe <axboe@fb.com>
* block, drivers, fs: rename REQ_FLUSH to REQ_PREFLUSHMike Christie2016-06-0739-98/+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>
* block: do not use REQ_FLUSH for tracking flush supportMike Christie2016-06-071-23/+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>
* block, drivers: add REQ_OP_FLUSH operationMike Christie2016-06-0720-31/+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>
* block, fs, drivers: remove REQ_OP compat defs and related codeMike Christie2016-06-076-63/+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>
* block, drivers, fs: shrink bi_rw from long to intMike Christie2016-06-076-9/+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>
* block: move bio io prio to a new fieldMike Christie2016-06-072-15/+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>
* ide cd: do not set REQ_WRITE on requests.Mike Christie2016-06-071-3/+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>
* blktrace: use op accessorsMike Christie2016-06-074-42/+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>
* drivers: use req op accessorMike Christie2016-06-0714-34/+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>
* block: convert is_sync helpers to use REQ_OPs.Mike Christie2016-06-074-11/+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>
* block: convert merge/insert code to check for REQ_OPs.Mike Christie2016-06-073-15/+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>
* blkg_rwstat: separate op from flagsMike Christie2016-06-072-26/+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>
* block: prepare elevator to use REQ_OPs.Mike Christie2016-06-074-9/+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>
* block: prepare mq request creation to use REQ_OPsMike Christie2016-06-071-14/+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>
* block: prepare request creation/destruction code to use REQ_OPsMike Christie2016-06-071-25/+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>
* block: copy bio op to request opMike Christie2016-06-071-3/+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>
* xen: use bio op accessorsMike Christie2016-06-071-12/+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>
* target: use bio op accessorsMike Christie2016-06-072-16/+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>
* md: use bio op accessorsMike Christie2016-06-0710-84/+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>
* drbd: use bio op accessorsMike Christie2016-06-076-42/+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>
* bcache: use bio op accessorsMike Christie2016-06-077-28/+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>
* dm: use bio op accessorsMike Christie2016-06-0714-80/+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>
* dm: pass dm stats data dir instead of bi_rwMike Christie2016-06-072-14/+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>
* pm: use bio op accessorsMike Christie2016-06-071-12/+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>
* ocfs2: use bio op accessorsMike Christie2016-06-071-4/+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>
* nilfs: use bio op accessorsMike Christie2016-06-071-8/+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>
* mpage: use bio op accessorsMike Christie2016-06-071-20/+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>
* hfsplus: use bio op accessorsMike Christie2016-06-074-11/+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>
* xfs: use bio op accessorsMike Christie2016-06-072-20/+18
| | | | | | | | Separate the op from the rq_flag_bits and have xfs set/get the bio using bio_set_op_attrs/bio_op. Signed-off-by: Mike Christie <mchristi@redhat.com> Signed-off-by: Jens Axboe <axboe@fb.com>
* gfs2: use bio op accessorsMike Christie2016-06-075-14/+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>
* f2fs: use bio op accessorsMike Christie2016-06-079-54/+81
| | | | | | | | | | Separate the op from the rq_flag_bits and have f2fs 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>
* btrfs: use bio fields for op and flagsMike Christie2016-06-079-67/+54
| | | | | | | | | | | The bio REQ_OP and bi_rw rq_flag_bits are now always setup, so there is no need to pass around the rq_flag_bits bits too. btrfs users should should access the bio insead. 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>
* btrfs: update __btrfs_map_block for REQ_OP transitionMike Christie2016-06-074-29/+34
| | | | | | | | | | | We no longer pass in a bitmap of rq_flag_bits bits to __btrfs_map_block. It will always be a REQ_OP, or the btrfs specific REQ_GET_READ_MIRRORS, so this drops the bit tests. 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>
* btrfs: use bio op accessorsMike Christie2016-06-077-40/+47
| | | | | | | | | | | This should be the easier cases to convert btrfs to bio_set_op_attrs/bio_op. They are mostly just cut and replace type of changes. 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>
* btrfs: have submit_one_bio users use bio op accessorsMike Christie2016-06-071-45/+43
| | | | | | | | | | | | | | | This patch has btrfs's submit_one_bio users set the bio op using bio_set_op_attrs and get the op using bio_op. The next patches will continue to convert btrfs, so submit_bio_hook and merge_bio_hook related code will be modified to take only the bio. I did not do it in this patch to try and keep it smaller. 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>
* direct-io: use bio set/get op accessorsMike Christie2016-06-073-19/+25
| | | | | | | | | | | | | | | This patch has the dio code use a REQ_OP for the op and rq_flag_bits for bi_rw flags. To set/get the op it uses the bio_set_op_attrs/bio_op accssors. It also begins to convert btrfs's dio_submit_t because of the dio submit_io callout use. The next patches will completely convert this code and the reset of the btrfs code paths. 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>
* block discard: use bio set op accessorMike Christie2016-06-073-8/+10
| | | | | | | | | | This converts the block issue discard helper and users to use the bio_set_op_attrs accessor and only pass in the operation flags like REQ_SEQURE. Signed-off-by: Mike Christie <mchristi@redhat.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Jens Axboe <axboe@fb.com>
* block, fs, mm, drivers: use bio set/get op accessorsMike Christie2016-06-0724-61/+65
| | | | | | | | | | | | | | This patch converts the simple bi_rw use cases in the block, drivers, mm and fs code to set/get the bio operation using bio_set_op_attrs/bio_op These should be simple one or two liner cases, so I just did them in one patch. The next patches handle the more complicated cases in a module per patch. Signed-off-by: Mike Christie <mchristi@redhat.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Jens Axboe <axboe@fb.com>
* bcache: use op_is_write instead of checking for REQ_WRITEMike Christie2016-06-072-4/+4
| | | | | | | | | | | | | | | We currently set REQ_WRITE/WRITE for all non READ IOs like discard, flush, writesame, etc. In the next patches where we no longer set up the op as a bitmap, we will not be able to detect a operation direction like writesame by testing if REQ_WRITE is set. This has bcache use the op_is_write helper which will do the right thing. Signed-off-by: Mike Christie <mchristi@redhat.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Jens Axboe <axboe@fb.com>
* dm: use op_is_write instead of checking for REQ_WRITEMike Christie2016-06-072-5/+5
| | | | | | | | | | | | | | | We currently set REQ_WRITE/WRITE for all non READ IOs like discard, flush, writesame, etc. In the next patches where we no longer set up the op as a bitmap, we will not be able to detect a operation direction like writesame by testing if REQ_WRITE is set. This has dm use the op_is_write helper which will do the right thing. Signed-off-by: Mike Christie <mchristi@redhat.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Jens Axboe <axboe@fb.com>
* block, drivers, cgroup: use op_is_write helper instead of checking for REQ_WRITEMike Christie2016-06-077-11/+11
| | | | | | | | | | | | | | | | | We currently set REQ_WRITE/WRITE for all non READ IOs like discard, flush, writesame, etc. In the next patches where we no longer set up the op as a bitmap, we will not be able to detect a operation direction like writesame by testing if REQ_WRITE is set. This patch converts the drivers and cgroup to use the op_is_write helper. This should just cover the simple cases. I did dm, md and bcache in their own patches because they were more involved. Signed-off-by: Mike Christie <mchristi@redhat.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Jens Axboe <axboe@fb.com>
* fs: have ll_rw_block users pass in op and flags separatelyMike Christie2016-06-0721-38/+40
| | | | | | | | | | | This has ll_rw_block users pass in the operation and flags separately, so ll_rw_block can setup the bio op and bi_rw flags on the bio that is submitted. 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>
* fs: have submit_bh users pass in op and flags separatelyMike Christie2016-06-0730-96/+102
| | | | | | | | | | | This has submit_bh users pass in the operation and flags separately, so submit_bh_wbc can setup the bio op and bi_rw flags on the bio that is submitted. 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>
* block: add REQ_OP definitions and helpersMike Christie2016-06-074-3/+60
| | | | | | | | | | | | | | | | | The following patches separate the operation (WRITE, READ, DISCARD, etc) from the rq_flag_bits flags. This patch adds definitions for request/bio operations (REQ_OPs) and adds request/bio accessors to get/set the op. In this patch the REQ_OPs match the REQ rq_flag_bits ones for compat reasons while all the code is converted to use the op accessors in the set. In the last patches the op will become a number and the accessors and helpers in this patch will be dropped or updated. Signed-off-by: Mike Christie <mchristi@redhat.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Jens Axboe <axboe@fb.com>
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