]> git.proxmox.com Git - mirror_ubuntu-zesty-kernel.git/commit - drivers/md/md-cluster.c
Communication Framework: Receiving
authorGoldwyn Rodrigues <rgoldwyn@suse.com>
Sat, 7 Jun 2014 06:08:29 +0000 (01:08 -0500)
committerGoldwyn Rodrigues <rgoldwyn@suse.com>
Mon, 23 Feb 2015 15:59:06 +0000 (09:59 -0600)
commit4664680c389828928efc61ce3d2cf2c65ad35c97
tree9a1b976007b7047fff44a15964e32fedcd7ad935
parent4b26a08af92c0d9c0bce07612b56ff326112321a
Communication Framework: Receiving

1. receive status

   sender                         receiver                   receiver
   ACK:CR                          ACK:CR                     ACK:CR

2. sender get EX of TOKEN
   sender get EX of MESSAGE
   sender                          receiver                   receiver
   TOKEN:EX                         ACK:CR                     ACK:CR
   MESSAGE:EX
   ACK:CR

3. sender write LVB.
   sender down-convert MESSAGE from EX to CR
   sender try to get EX of ACK
   [ wait until all receiver has *processed* the MESSAGE ]

                                     [ triggered by bast of ACK ]
                                     receiver get CR of MESSAGE
                                     receiver read LVB
                                     receiver processes the message
     [ wait finish ]
                                     receiver release ACK

   sender                         receiver                   receiver
   TOKEN:EX                       MESSAGE:CR                 MESSAGE:CR
   MESSAGE:CR
   ACK:EX

4. sender down-convert ACK from EX to CR
   sender release MESSAGE
   sender release TOKEN
  receiver upconvert to EX of MESSAGE
                                  receiver get CR of ACK
  receiver release MESSAGE

   sender                        receiver                   receiver
   ACK:CR                         ACK:CR                     ACK:CR

Signed-off-by: Lidong Zhong <lzhong@suse.com>
Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.com>
drivers/md/md-cluster.c