blkparse: add documetation for 'R' requeue request

Signed-off-by: Weiping Zhang <zhangweiping@didichuxing.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/doc/blkparse.1 b/doc/blkparse.1
index b1cb6efc63c69856f6052762c977e95e1c757721..cb21fea52cf892e99d49fd01210db7a3807e00bd 100644 (file)
--- a/doc/blkparse.1
+++ b/doc/blkparse.1
@@ -285,6 +285,10 @@ this and will clone lots of i/o.
 For stacked devices, incoming i/o is remapped to device below it in the i/o
 stack. The remap action details what exactly is being remapped to what.
 
+.HP 4
+\fBR -- requeue\fR
+Put a request back on queue.
+