ceph: fix readpage from fscache
authorYan, Zheng <zyan@redhat.com>
Fri, 4 Aug 2017 03:22:31 +0000 (11:22 +0800)
committerIlya Dryomov <idryomov@gmail.com>
Thu, 31 Aug 2017 22:04:26 +0000 (00:04 +0200)
commitdd2bc473482eedc60c29cf00ad12568ce40ce511
treee06527af35691390fce75993b0986cad10be1225
parentcc4a41fe5541a73019a864883297bd5043aa6d98
ceph: fix readpage from fscache

ceph_readpage() unlocks page prematurely prematurely in the case
that page is reading from fscache. Caller of readpage expects that
page is uptodate when it get unlocked. So page shoule get locked
by completion callback of fscache_read_or_alloc_pages()

Cc: stable@vger.kernel.org # 4.1+, needs backporting for < 4.7
Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
Reviewed-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
fs/ceph/addr.c
fs/ceph/cache.c