mount/fuse: check for fuse inval notify support when fopen-keep-cache enabled

The fopen-keep-cache feature relies on the fuse notification system
to operate correctly. As Csaba has pointed out, the inode invalidation
functionality was added in FUSE version 7.12. Require that the user
have 7.12 or later to enable fopen-keep-cache. If not supported, warn
the user and disable the feature.

BUG: 833564
Change-Id: Ib9eecb56b689d8edff118b34e2dcc7dba6539b04
Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-on: http://review.gluster.com/3690
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Amar Tumballi <amarts@redhat.com>
Reviewed-by: Raghavendra Bhat <raghavendra@redhat.com>
Reviewed-by: Anand Avati <avati@redhat.com>

0 files changed, 0 insertions, 0 deletions