tree f633c8e53d446e7dbe4837d7d109702c39f991e1
parent 9b58714f9ab4138dabcf7176fdc465bd00afeae9
author Jinshan Xiong <jinshan.xiong@intel.com> 1471378724 -0400
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1471787855 +0200

staging: lustre: llite: avoid a deadlock in page write

For a partial page write, it will have to issue a READ RPC firstly
to get a full uptodate page. If another page is already locked by
this thread it can easily cause deadlock.

Signed-off-by: Jinshan Xiong <jinshan.xiong@intel.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-4873
Reviewed-on: http://review.whamcloud.com/9928
Reviewed-by: Bobi Jam <bobijam@gmail.com>
Reviewed-by: Niu Yawei <yawei.niu@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: James Simmons <jsimmons@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>