tree f187a530024ab278a3f3e25ee01edc2e8c568f39
parent 613e901e1ee0e1096663b649eee8e5d6697919f3
author Jeff Layton <jlayton@redhat.com> 1303919349 -0400
committer Trond Myklebust <Trond.Myklebust@netapp.com> 1303935601 -0400

nfs: don't lose MS_SYNCHRONOUS on remount of noac mount

On a remount, the VFS layer will clear the MS_SYNCHRONOUS bit on the
assumption that the flags on the mount syscall will have it set if the
remounted fs is supposed to keep it.

In the case of "noac" though, MS_SYNCHRONOUS is implied. A remount of
such a mount will lose the MS_SYNCHRONOUS flag since "sync" isn't part
of the mount options.

Reported-by: Max Matveev <makc@redhat.com>
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Cc: stable@kernel.org
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>