linux/Documentation/vm, branch v5.0

Merge tag 'docs-5.0' of git://git.lwn.net/linux

2018-12-29T19:21:49Z

Pull documentation update from Jonathan Corbet: "A fairly normal cycle for documentation stuff. We have a new document on perf security, more Italian translations, more improvements to the memory-management docs, improvements to the pathname lookup documentation, and the usual array of smaller fixes. As is often the case, there are a few reaches outside of Documentation/ to adjust kerneldoc comments" * tag 'docs-5.0' of git://git.lwn.net/linux: (38 commits) docs: improve pathname-lookup document structure configfs: fix wrong name of struct in documentation docs/mm-api: link slab_common.c to "The Slab Cache" section slab: make kmem_cache_create{_usercopy} description proper kernel-doc doc:process: add links where missing docs/core-api: make mm-api.rst more structured x86, boot: documentation whitespace fixup Documentation: devres: note checking needs when converting doc:it: add some process/* translations doc:it: fixes in process/1.Intro Documentation: convert path-lookup from markdown to resturctured text Documentation/admin-guide: update admin-guide index.rst Documentation/admin-guide: introduce perf-security.rst file scripts/kernel-doc: Fix struct and struct field attribute processing Documentation: dev-tools: Fix typos in index.rst Correct gen_init_cpio tool's documentation Document /proc/pid PID reuse behavior Documentation: update path-lookup.md for parallel lookups Documentation: Use "while" instead of "whilst" dmaengine: Add mailing list address to the documentation ...

Link the memory allocation guide from the MM docs

2018-11-20T16:17:40Z

I just went looking for the memory allocation guide in the MM docs instead of in the core API. For the benefit of the next person who makes that mistake, link to it from the MM docs. Signed-off-by: Matthew Wilcox Acked-by: Mike Rapoport Signed-off-by: Jonathan Corbet

Merge drm/drm-next into drm-intel-next-queued

2018-11-20T11:14:08Z

Pull in v4.20-rc3 via drm-next. Signed-off-by: Jani Nikula

mm, drm/i915: mark pinned shmemfs pages as unevictable

2018-11-07T15:28:32Z

The i915 driver uses shmemfs to allocate backing storage for gem objects. These shmemfs pages can be pinned (increased ref count) by shmem_read_mapping_page_gfp(). When a lot of pages are pinned, vmscan wastes a lot of time scanning these pinned pages. In some extreme case, all pages in the inactive anon lru are pinned, and only the inactive anon lru is scanned due to inactive_ratio, the system cannot swap and invokes the oom-killer. Mark these pinned pages as unevictable to speed up vmscan. Export pagevec API check_move_unevictable_pages(). This patch was inspired by Chris Wilson's change [1]. [1]: https://patchwork.kernel.org/patch/9768741/ Cc: Chris Wilson Cc: Joonas Lahtinen Cc: Peter Zijlstra Cc: Andrew Morton Cc: Dave Hansen Signed-off-by: Kuo-Hsin Yang Acked-by: Michal Hocko # mm part Reviewed-by: Chris Wilson Acked-by: Dave Hansen Acked-by: Andrew Morton Link: https://patchwork.freedesktop.org/patch/msgid/20181106132324.17390-1-chris@chris-wilson.co.uk Signed-off-by: Chris Wilson

slub: extend slub debug to handle multiple slabs

2018-10-26T23:25:19Z

Extend the slub_debug syntax to "slub_debug=[,]*", where may contain an asterisk at the end. For example, the following would poison all kmalloc slabs: slub_debug=P,kmalloc* and the following would apply the default flags to all kmalloc and all block IO slabs: slub_debug=,bio*,kmalloc* Please note that a similar patch was posted by Iliyan Malchev some time ago but was never merged: https://marc.info/?l=linux-mm&m=131283905330474&w=2 Link: http://lkml.kernel.org/r/20180928111139.27962-1-atomlin@redhat.com Signed-off-by: Aaron Tomlin Acked-by: Christoph Lameter Cc: Pekka Enberg Cc: David Rientjes Cc: Joonsoo Kim Cc: Iliyan Malchev Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

Drop all 00-INDEX files from Documentation/

2018-09-09T21:08:58Z

This is a respin with a wider audience (all that get_maintainer returned) and I know this spams a *lot* of people. Not sure what would be the correct way, so my apologies for ruining your inbox. The 00-INDEX files are supposed to give a summary of all files present in a directory, but these files are horribly out of date and their usefulness is brought into question. Often a simple "ls" would reveal the same information as the filenames are generally quite descriptive as a short introduction to what the file covers (it should not surprise anyone what Documentation/sched/sched-design-CFS.txt covers) A few years back it was mentioned that these files were no longer really needed, and they have since then grown further out of date, so perhaps it is time to just throw them out. A short status yields the following _outdated_ 00-INDEX files, first counter is files listed in 00-INDEX but missing in the directory, last is files present but not listed in 00-INDEX. List of outdated 00-INDEX: Documentation: (4/10) Documentation/sysctl: (0/1) Documentation/timers: (1/0) Documentation/blockdev: (3/1) Documentation/w1/slaves: (0/1) Documentation/locking: (0/1) Documentation/devicetree: (0/5) Documentation/power: (1/1) Documentation/powerpc: (0/5) Documentation/arm: (1/0) Documentation/x86: (0/9) Documentation/x86/x86_64: (1/1) Documentation/scsi: (4/4) Documentation/filesystems: (2/9) Documentation/filesystems/nfs: (0/2) Documentation/cgroup-v1: (0/2) Documentation/kbuild: (0/4) Documentation/spi: (1/0) Documentation/virtual/kvm: (1/0) Documentation/scheduler: (0/2) Documentation/fb: (0/1) Documentation/block: (0/1) Documentation/networking: (6/37) Documentation/vm: (1/3) Then there are 364 subdirectories in Documentation/ with several files that are missing 00-INDEX alltogether (and another 120 with a single file and no 00-INDEX). I don't really have an opinion to whether or not we /should/ have 00-INDEX, but the above 00-INDEX should either be removed or be kept up to date. If we should keep the files, I can try to keep them updated, but I rather not if we just want to delete them anyway. As a starting point, remove all index-files and references to 00-INDEX and see where the discussion is going. Signed-off-by: Henrik Austad Acked-by: "Paul E. McKenney" Just-do-it-by: Steven Rostedt Reviewed-by: Jens Axboe Acked-by: Paul Moore Acked-by: Greg Kroah-Hartman Acked-by: Mark Brown Acked-by: Mike Rapoport Cc: [Almost everybody else] Signed-off-by: Jonathan Corbet

docs/vm/hmm.rst: Add missed space

2018-08-31T22:22:12Z

This space missing caused the colour scheme in vim editor messy after that line. Add it to fix. Signed-off-by: Baoquan He [ jc: fixed alignment after the changed line ] Signed-off-by: Jonathan Corbet

docs/vm: move ksm and transhuge from "user" to "internals" section.

2018-05-29T12:45:55Z

After the userspace interface description for KSM and THP was split to Documentation/admin-guide/mm, the remaining parts belong to the section describing MM internals. Signed-off-by: Mike Rapoport Signed-off-by: Jonathan Corbet

docs/vm: transhuge: split userspace bits to admin-guide/mm/transhuge

2018-05-21T15:30:58Z

Now that the administrative information for transparent huge pages is nicely separated, move it to its own page under the admin guide. Signed-off-by: Mike Rapoport Signed-off-by: Jonathan Corbet

docs/vm: transhuge: minor updates

2018-05-21T15:30:51Z

Some formatting changes and addition of a sentence introducing khugepaged Signed-off-by: Mike Rapoport Signed-off-by: Jonathan Corbet