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| author | Jens Axboe <axboe@kernel.dk> | 2020-06-04 11:23:39 -0600 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2020-06-21 20:44:25 -0600 |
| commit | 5a473e8311b582a40c10409a0f4bb39f42aa8123 (patch) | |
| tree | 87f06802ab216f218f5d34d8c10323a3e580a736 /include/linux/blkdev.h | |
| parent | 2e0464d48f32a9e78e2aa85cbbedc77ecbb6ed60 (diff) | |
| download | lwn-5a473e8311b582a40c10409a0f4bb39f42aa8123.tar.gz lwn-5a473e8311b582a40c10409a0f4bb39f42aa8123.zip | |
block: provide plug based way of signaling forced no-wait semantics
Provide a way for the caller to specify that IO should be marked
with REQ_NOWAIT to avoid blocking on allocation.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/linux/blkdev.h')
| -rw-r--r-- | include/linux/blkdev.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 8fd900998b4e..6e067dca94cf 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -1189,6 +1189,7 @@ struct blk_plug { struct list_head cb_list; /* md requires an unplug callback */ unsigned short rq_count; bool multiple_queues; + bool nowait; }; #define BLK_MAX_REQUEST_COUNT 16 #define BLK_PLUG_FLUSH_SIZE (128 * 1024) |