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Commit eae21770 authored by Linus Torvalds's avatar Linus Torvalds
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Merge branch 'akpm' (patches from Andrew) 

Merge third patch-bomb from Andrew Morton:
 "I'm pretty much done for -rc1 now:

   - the rest of MM, basically

   - lib/ updates

   - checkpatch, epoll, hfs, fatfs, ptrace, coredump, exit

   - cpu_mask simplifications

   - kexec, rapidio, MAINTAINERS etc, etc.

   - more dma-mapping cleanups/simplifications from hch"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (109 commits)
  MAINTAINERS: add/fix git URLs for various subsystems
  mm: memcontrol: add "sock" to cgroup2 memory.stat
  mm: memcontrol: basic memory statistics in cgroup2 memory controller
  mm: memcontrol: do not uncharge old page in page cache replacement
  Documentation: cgroup: add memory.swap.{current,max} description
  mm: free swap cache aggressively if memcg swap is full
  mm: vmscan: do not scan anon pages if memcg swap limit is hit
  swap.h: move memcg related stuff to the end of the file
  mm: memcontrol: replace mem_cgroup_lruvec_online with mem_cgroup_online
  mm: vmscan: pass memcg to get_scan_count()
  mm: memcontrol: charge swap to cgroup2
  mm: memcontrol: clean up alloc, online, offline, free functions
  mm: memcontrol: flatten struct cg_proto
  mm: memcontrol: rein in the CONFIG space madness
  net: drop tcp_memcontrol.c
  mm: memcontrol: introduce CONFIG_MEMCG_LEGACY_KMEM
  mm: memcontrol: allow to disable kmem accounting for cgroup2
  mm: memcontrol: account "kmem" consumers in cgroup2 memory controller
  mm: memcontrol: move kmem accounting code to CONFIG_MEMCG
  mm: memcontrol: separate kmem code from legacy tcp accounting code
  ...
parents e9f57ebc 9f273c24

CREDITS

+10 −0
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@@ -1856,6 +1856,16 @@ S: Korte Heul 95 
S: 1403 ND  BUSSUM

S: The Netherlands



N: Martin Kepplinger

E: martink@posteo.de

E: martin.kepplinger@theobroma-systems.com

W: http://www.martinkepplinger.com

D: mma8452 accelerators iio driver

D: Kernel cleanups

S: Garnisonstraße 26

S: 4020 Linz

S: Austria



N: Karl Keyte

E: karl@koft.com

D: Disk usage statistics and modifications to line printer driver

Documentation/DMA-API-HOWTO.txt

+0 −10
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@@ -951,16 +951,6 @@ to "Closing". 
   alignment constraints (e.g. the alignment constraints about 64-bit

   objects).



3) Supporting multiple types of IOMMUs



   If your architecture needs to support multiple types of IOMMUs, you

   can use include/linux/asm-generic/dma-mapping-common.h. It's a

   library to support the DMA API with multiple types of IOMMUs. Lots

   of architectures (x86, powerpc, sh, alpha, ia64, microblaze and

   sparc) use it. Choose one to see how it can be used. If you need to

   support multiple types of IOMMUs in a single system, the example of

   x86 or powerpc helps.



			   Closing



This document, and the API itself, would not be in its current

Documentation/cgroup-v2.txt

+89 −0
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@@ -819,6 +819,78 @@ PAGE_SIZE multiple when read back. 
		the cgroup.  This may not exactly match the number of

		processes killed but should generally be close.



  memory.stat



	A read-only flat-keyed file which exists on non-root cgroups.



	This breaks down the cgroup's memory footprint into different

	types of memory, type-specific details, and other information

	on the state and past events of the memory management system.



	All memory amounts are in bytes.



	The entries are ordered to be human readable, and new entries

	can show up in the middle. Don't rely on items remaining in a

	fixed position; use the keys to look up specific values!



	  anon



		Amount of memory used in anonymous mappings such as

		brk(), sbrk(), and mmap(MAP_ANONYMOUS)



	  file



		Amount of memory used to cache filesystem data,

		including tmpfs and shared memory.



	  file_mapped



		Amount of cached filesystem data mapped with mmap()



	  file_dirty



		Amount of cached filesystem data that was modified but

		not yet written back to disk



	  file_writeback



		Amount of cached filesystem data that was modified and

		is currently being written back to disk



	  inactive_anon

	  active_anon

	  inactive_file

	  active_file

	  unevictable



		Amount of memory, swap-backed and filesystem-backed,

		on the internal memory management lists used by the

		page reclaim algorithm



	  pgfault



		Total number of page faults incurred



	  pgmajfault



		Number of major page faults incurred



  memory.swap.current



	A read-only single value file which exists on non-root

	cgroups.



	The total amount of swap currently being used by the cgroup

	and its descendants.



  memory.swap.max



	A read-write single value file which exists on non-root

	cgroups.  The default is "max".



	Swap usage hard limit.  If a cgroup's swap usage reaches this

	limit, anonymous meomry of the cgroup will not be swapped out.





5-2-2. General Usage
@@ -1291,3 +1363,20 @@ allocation from the slack available in other groups or the rest of the 
system than killing the group.  Otherwise, memory.max is there to

limit this type of spillover and ultimately contain buggy or even

malicious applications.



The combined memory+swap accounting and limiting is replaced by real

control over swap space.



The main argument for a combined memory+swap facility in the original

cgroup design was that global or parental pressure would always be

able to swap all anonymous memory of a child group, regardless of the

child's own (possibly untrusted) configuration.  However, untrusted

groups can sabotage swapping by other means - such as referencing its

anonymous memory in a tight loop - and an admin can not assume full

swappability when overcommitting untrusted jobs.



For trusted jobs, on the other hand, a combined counter is not an

intuitive userspace interface, and it flies in the face of the idea

that cgroup controllers should account and limit specific physical

resources.  Swap space is a resource like all others in the system,

and that's why unified hierarchy allows distributing it separately.

Documentation/features/io/dma_map_attrs/arch-support.txt

deleted100644 → 0
+0 −40
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#

# Feature name:          dma_map_attrs

#         Kconfig:       HAVE_DMA_ATTRS

#         description:   arch provides dma_*map*_attrs() APIs

#

    -----------------------

    |         arch |status|

    -----------------------

    |       alpha: |  ok  |

    |         arc: | TODO |

    |         arm: |  ok  |

    |       arm64: |  ok  |

    |       avr32: | TODO |

    |    blackfin: | TODO |

    |         c6x: | TODO |

    |        cris: | TODO |

    |         frv: | TODO |

    |       h8300: |  ok  |

    |     hexagon: |  ok  |

    |        ia64: |  ok  |

    |        m32r: | TODO |

    |        m68k: | TODO |

    |       metag: | TODO |

    |  microblaze: |  ok  |

    |        mips: |  ok  |

    |     mn10300: | TODO |

    |       nios2: | TODO |

    |    openrisc: |  ok  |

    |      parisc: | TODO |

    |     powerpc: |  ok  |

    |        s390: |  ok  |

    |       score: | TODO |

    |          sh: |  ok  |

    |       sparc: |  ok  |

    |        tile: |  ok  |

    |          um: | TODO |

    |   unicore32: |  ok  |

    |         x86: |  ok  |

    |      xtensa: | TODO |

    -----------------------

Documentation/filesystems/vfat.txt

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@@ -180,6 +180,16 @@ dos1xfloppy -- If set, use a fallback default BIOS Parameter Block 


<bool>: 0,1,yes,no,true,false



LIMITATION

---------------------------------------------------------------------

* The fallocated region of file is discarded at umount/evict time

  when using fallocate with FALLOC_FL_KEEP_SIZE.

  So, User should assume that fallocated region can be discarded at

  last close if there is memory pressure resulting in eviction of

  the inode from the memory. As a result, for any dependency on

  the fallocated region, user should make sure to recheck fallocate

  after reopening the file.



TODO

----------------------------------------------------------------------

* Need to get rid of the raw scanning stuff.  Instead, always use