diff options
| author | Jens Axboe <axboe@kernel.dk> | 2017-06-27 09:22:02 -0600 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2017-06-27 12:05:27 -0600 |
| commit | cb6934f8ea1a595902ca37e250e0917d4dd7b2a7 (patch) | |
| tree | 4280f328f9b632f6940a613e852f264918619e55 /include/linux/blkdev.h | |
| parent | c75b1d9421f80f4143e389d2d50ddfc8a28c8c35 (diff) | |
block: add support for write hints in a bio
No functional changes in this patch, we just use up some holes
in the bio and request structures to define a write hint that
we psas down the stack.
Ensure that we don't merge requests that have different life time
hints assigned to them, and that we inherit the write hint when
cloning a bio.
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/linux/blkdev.h')
| -rw-r--r-- | include/linux/blkdev.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index bf2157141d53..0eebd3bcfd85 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -225,6 +225,8 @@ struct request { unsigned int extra_len; /* length of alignment and padding */ + unsigned short write_hint; + unsigned long deadline; struct list_head timeout_list; |