]> git.proxmox.com Git - mirror_ubuntu-zesty-kernel.git/commit
staging/lustre/llite: deadlock for page write
authorJinshan Xiong <jinshan.xiong@intel.com>
Wed, 30 Mar 2016 23:48:43 +0000 (19:48 -0400)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 31 Mar 2016 04:38:13 +0000 (21:38 -0700)
commitd37dd10b71fd304289560901e81eddbe7defb351
treee007c2eb9bdad906102f26230ebc7504af2a20aa
parentc11599b8d52d353f45b2dc05d58c48f9812ce6e9
staging/lustre/llite: deadlock for page write

Writing thread already locked page #1, and then wait for the
Writeback bit of page #2;

Ptlrpc thread is composing a write RPC, so it sets Writeback on
page #2 and tries to lock page #1 to make it ready.

Deadlocked.

Signed-off-by: Jinshan Xiong <jinshan.xiong@intel.com>
Reviewed-on: http://review.whamcloud.com/9036
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-4540
Reviewed-by: wangdi <di.wang@intel.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/staging/lustre/lustre/llite/rw26.c