4 fixes, based on bab5c80b211035739997ebd361a679fa85b39465: Subject: ocfs2: fix a GCC warning Subject: mm/mmap.c: don't clobber partially overlapping VMA with MAP_FIXED_NOREPLACE Subject: mm/thp: fix call to mmu_notifier in set_pmd_migration_entry() v2 Subject: fs/fat/fatent.c: add cond_resched() to fat_count_free_clusters()