From: Linus Torvalds <torvalds@linux-foundation.org>
Date: Sat, 5 Sep 2015 21:27:38 +0000 (-0700)
Subject: Merge branch 'akpm' (patches from Andrew)
X-Git-Tag: v5.15~15140
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=6c0f568e84a3cfc775682311d65205462c3f3bc1;p=platform%2Fkernel%2Flinux-starfive.git

Merge branch 'akpm' (patches from Andrew)

Merge patch-bomb from Andrew Morton:

 - a few misc things

 - Andy's "ambient capabilities"

 - fs/nofity updates

 - the ocfs2 queue

 - kernel/watchdog.c updates and feature work.

 - some of MM.  Includes Andrea's userfaultfd feature.

[ Hadn't noticed that userfaultfd was 'default y' when applying the
  patches, so that got fixed in this merge instead.  We do _not_ mark
  new features that nobody uses yet 'default y'   - Linus ]

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (118 commits)
  mm/hugetlb.c: make vma_has_reserves() return bool
  mm/madvise.c: make madvise_behaviour_valid() return bool
  mm/memory.c: make tlb_next_batch() return bool
  mm/dmapool.c: change is_page_busy() return from int to bool
  mm: remove struct node_active_region
  mremap: simplify the "overlap" check in mremap_to()
  mremap: don't do uneccesary checks if new_len == old_len
  mremap: don't do mm_populate(new_addr) on failure
  mm: move ->mremap() from file_operations to vm_operations_struct
  mremap: don't leak new_vma if f_op->mremap() fails
  mm/hugetlb.c: make vma_shareable() return bool
  mm: make GUP handle pfn mapping unless FOLL_GET is requested
  mm: fix status code which move_pages() returns for zero page
  mm: memcontrol: bring back the VM_BUG_ON() in mem_cgroup_swapout()
  genalloc: add support of multiple gen_pools per device
  genalloc: add name arg to gen_pool_get() and devm_gen_pool_create()
  mm/memblock: WARN_ON when nid differs from overlap region
  Documentation/features/vm: add feature description and arch support status for batched TLB flush after unmap
  mm: defer flush of writable TLB entries
  mm: send one IPI per CPU to TLB flush all entries after unmapping pages
  ...
---

6c0f568e84a3cfc775682311d65205462c3f3bc1
diff --cc init/Kconfig
index bb9b4dd,cf7e482..2c0e50e
--- a/init/Kconfig
+++ b/init/Kconfig
@@@ -1576,6 -1586,17 +1586,14 @@@ config ADVISE_SYSCALL
  	  applications use these syscalls, you can disable this option to save
  	  space.
  
+ config USERFAULTFD
+ 	bool "Enable userfaultfd() system call"
+ 	select ANON_INODES
 -	default y
+ 	depends on MMU
+ 	help
+ 	  Enable the userfaultfd() system call that allows to intercept and
+ 	  handle page faults in userland.
+ 
 -	  If unsure, say Y.
 -
  config PCI_QUIRKS
  	default y
  	bool "Enable PCI quirk workarounds" if EXPERT