tree bf7ddd4b76b0b20b45e905c6854d1b74551c06f6
parent b109eec6f4332bd517e2f41e207037c4b9065094
author Yan, Zheng <zyan@redhat.com> 1463576306 +0800
committer Ilya Dryomov <idryomov@gmail.com> 1464218142 +0200

ceph: don't use truncate_pagecache() to invalidate read cache

truncate_pagecache() drops dirty pages, it's dangerous to use it
to invalidate read cache. Besides, we shouldn't start invalidating
read cache while there are buffer writers. Because buffer writers
may add dirty pages later.

Signed-off-by: Yan, Zheng <zyan@redhat.com>