9 fixes, based on 8113a85f872003a9f5c58f9f143054b0d8ec73a5: Subject: mm/memory_hotplug.c: drop memory device reference after find_memory_block() Subject: zram: pass down the bvec we need to read into in the work struct Subject: lib/Kconfig.debug: Fix build error without CONFIG_BLOCK Subject: lib/test_vmalloc.c: do not create cpumask_t variable on stack Subject: mm: do not boost watermarks to avoid fragmentation for the DISCONTIG memory model Subject: mm, page_alloc: always use a captured page regardless of compaction result Subject: mm/page_alloc.c: avoid potential NULL pointer dereference Subject: mm/page_alloc.c: fix never set ALLOC_NOFRAGMENT flag Subject: fs/proc/proc_sysctl.c: Fix a NULL pointer dereference
