ocfs2: fix gfp mask in some file system paths

We were using GFP_KERNEL in a handful of places which really wanted
GFP_NOFS. Fix this.

Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>

diff --cc fs/ocfs2/extent_map.c
Simple merge

diff --cc fs/ocfs2/journal.c
Simple merge

diff --cc fs/ocfs2/uptodate.c
Simple merge

diff --cc fs/ocfs2/vote.c
Simple merge