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| author |   Mike Christie <mchristi@redhat.com> | 2016-06-05 14:32:23 -0500 |
|---|---|---|
| committer |   Jens Axboe <axboe@fb.com> | 2016-06-07 13:41:38 -0600 |
| commit | 3a5e02ced11e22ecd9da3d6710afe15bcfee1d10 (patch) | |
| tree | 78f6d1a737b01b559b61310b9355f1f7ecfdd54c /include/linux/blk_types.h | |
| parent | block, fs, drivers: remove REQ_OP compat defs and related code (diff) | |
| download | linux-dev-3a5e02ced11e22ecd9da3d6710afe15bcfee1d10.tar.xz linux-dev-3a5e02ced11e22ecd9da3d6710afe15bcfee1d10.zip | |
block, drivers: add REQ_OP_FLUSH operation
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>
Diffstat (limited to 'include/linux/blk_types.h')
| -rw-r--r-- | include/linux/blk_types.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h index 23c1ab2a9475..32d87522f349 100644 --- a/include/linux/blk_types.h +++ b/include/linux/blk_types.h @@ -249,9 +249,10 @@ enum req_op { REQ_OP_WRITE, REQ_OP_DISCARD, /* request to discard sectors */ REQ_OP_WRITE_SAME, /* write same block many times */ + REQ_OP_FLUSH, /* request for cache flush */ }; -#define REQ_OP_BITS 2 +#define REQ_OP_BITS 3 typedef unsigned int blk_qc_t; #define BLK_QC_T_NONE -1U |