diff options
| author | Christoph Hellwig <hch@lst.de> | 2017-11-02 21:29:49 +0300 |
|---|---|---|
| committer | Jason Liu <jason.hui.liu@nxp.com> | 2018-10-29 11:10:38 +0800 |
| commit | 8d78697293fced61b49d5a2fab8cfbc7642caa1f (patch) | |
| tree | 6bf04ee23efff8c49206d1fffaaa84f9f0096347 /include/linux | |
| parent | dcd5bfb860c6f3aca45a624a100ae493eec359f7 (diff) | |
block: add REQ_DRV bit
Set aside a bit in the request/bio flags for driver use.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
(cherry picked from commit 96222bcc732d0504363dc772637c50e53b4bd41e)
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/blk_types.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h index e157c8aef40d..86173bafcd39 100644 --- a/include/linux/blk_types.h +++ b/include/linux/blk_types.h @@ -234,6 +234,9 @@ enum req_flag_bits { /* command specific flags for REQ_OP_WRITE_ZEROES: */ __REQ_NOUNMAP, /* do not free blocks when zeroing */ + /* for driver use */ + __REQ_DRV, + __REQ_NR_BITS, /* stops here */ }; @@ -254,6 +257,8 @@ enum req_flag_bits { #define REQ_NOUNMAP (1ULL << __REQ_NOUNMAP) +#define REQ_DRV (1ULL << __REQ_DRV) + #define REQ_FAILFAST_MASK \ (REQ_FAILFAST_DEV | REQ_FAILFAST_TRANSPORT | REQ_FAILFAST_DRIVER) |