22 fixes, based on 8c7ae38d1ce12a0eaeba655df8562552b3596c7f:
Subject: kasan: fix variable 'tag' set but not used warning
Subject: mm/memory.c: fix modifying of page protection by insert_pfn()
Subject: mm/debug.c: add a cast to u64 for atomic64_read()
Subject: mailmap: add Changbin Du
Subject: fs/open.c: allow opening only regular files during execve()
Subject: mm/hotplug: fix offline undo_isolate_page_range()
Subject: ocfs2: fix inode bh swapping mixup in ocfs2_reflink_inodes_lock
Subject: mm: add support for kmem caches in DMA32 zone
Subject: iommu/io-pgtable-arm-v7s: request DMA32 memory, and improve debugging
Subject: include/linux/hugetlb.h: convert to use vm_fault_t
Subject: mm: mempolicy: make mbind() return -EIO when MPOL_MF_STRICT is specified
Subject: mm/debug.c: fix __dump_page when mapping->host is not set
Subject: include/linux/list.h: fix list_is_first() kernel-doc
Subject: fs/proc/kcore.c: make kcore_modules static
Subject: ptrace: take into account saved_sigmask in PTRACE{GET,SET}SIGMASK
Subject: mm/memory_hotplug.c: fix notification in offline error path
Subject: mm/page_isolation.c: fix a wrong flag in set_migratetype_isolate()
Subject: drivers/block/zram/zram_drv.c: fix idle/writeback string compare
Subject: mm/migrate.c: add missing flush_dcache_page for non-mapped page migrate
Subject: checkpatch: add %pt as a valid vsprintf extension
Subject: fs: fs_parser: fix printk format warning
Subject: fs/proc/proc_sysctl.c: fix NULL pointer dereference in put_links
