Bring a handful of (relatively) urgent fixes into docs-next as well.

There were enough problems with suse.{com,cz} MTAs recently. I am bored
by restoring lost e-mails from public archives. Let's switch (all) my
MAINTAINERS addresses to @kernel.org and forward the e-mails there as I
wish.

And add the whole history to .mailmap.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Joe Perches <joe@perches.com>

Link: https://lore.kernel.org/r/20200623080919.19976-1-jslaby@suse.czSigned-off-by: Jonathan Corbet <corbet@lwn.net>

Commit ed318a6c ("fscrypt: support test_dummy_encryption=v2") added an
entry to the massive option table in Documentation/filesystems/f2fs.txt.
The option was too wide for the formatting of the table, though, leading to
a verbose and ugly warning starting with:

    Documentation/filesystems/f2fs.rst:229: WARNING: Malformed table.
    Text in column margin in table line 126.

Fixing this requires formatting the whole table; let's hear it for Emacs
query-replace-regexp.

Fixes: ed318a6c ("fscrypt: support test_dummy_encryption=v2")
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

The sphinx-pre-install script will put out a verbose message recommending
an upgrade for anybody running less than 2.4.4 - which was only released in
March.  So *everybody* will see that warning at this point.  Let's only
warn if the user is below our generally recommended version (1.7.9
currently).

It might be good to put out a warning if people are explicitly making PDF
files, but would need to be done in a different place and relatively few
people do that.
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Create a documentation providing a background and explanation around the
operation of the Multi-Queue Block IO Queueing Mechanism (blk-mq).

The reference for writing this documentation was the source code and
"Linux Block IO: Introducing Multi-queue SSD Access on Multi-core
Systems", by Axboe et al.
Signed-off-by: André Almeida <andrealmeid@collabora.com>
Reviewed-by: Jens Axboe <axboe@kernel.dk>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Link: https://lore.kernel.org/r/20200620002036.113000-1-andrealmeid@collabora.comSigned-off-by: Jonathan Corbet <corbet@lwn.net>

Such directive cause troubles with PDF output.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/9a9043face7ace90e3616ba840a8e09cfc8f143f.1592203650.git.mchehab+huawei@kernel.orgSigned-off-by: Jonathan Corbet <corbet@lwn.net>

There are several files that I was unable to find a proper place
for them, and 3 ones that are still in plain old text format.

Let's place those stuff behind the carpet, as we'd like to keep the
root directory clean.

We can later discuss and move those into better places.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/11bd0d75e65a874f7c276a0aeab0fe13f3376f5f.1592203650.git.mchehab+huawei@kernel.orgSigned-off-by: Jonathan Corbet <corbet@lwn.net>

- Add a SPDX header;
- Adjust document title to follow ReST style;
- Add blank lines to make ReST markup happy
- Add it to sh/index.rst.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/adf117cf1edd7f43cb839ff2800f4315dfbcce13.1592203650.git.mchehab+huawei@kernel.orgSigned-off-by: Jonathan Corbet <corbet@lwn.net>

- Add a SPDX header;
- Adjust document title to follow ReST style;
- Mark literal blocks as such;
- Mark a table as such;
- Add it to sh/index.rst.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/4437d379ccf201cc3a369232f9159a02754ca530.1592203650.git.mchehab+huawei@kernel.orgSigned-off-by: Jonathan Corbet <corbet@lwn.net>

- Add a SPDX header;
- Use standard markup for document title;
- Adjust identation on lists and add blank lines where
  needed;
- Add it to the powerpc index.rst file.

Acked-by: Michael Ellerman <mpe@ellerman.id.au> # powerpc
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/a88855cc8b3a97b9b918a33e78e9ad000cf64be1.1592203650.git.mchehab+huawei@kernel.orgSigned-off-by: Jonathan Corbet <corbet@lwn.net>

This file is almost in ReST. All it needs is a rename and
adding a :field: for the two fields at the beginning
(author and date).

While here, add a proper SPDX header, and use the standard
markup for document titles, just for consistency.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/c99bebf166559e9098a9eb78fb2eab2847fffb05.1592203650.git.mchehab+huawei@kernel.orgSigned-off-by: Jonathan Corbet <corbet@lwn.net>

Convert this file to ReST by adding a proper title to it and
use the right markups for a table.

While here, add a SPDX header.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/6254963b85417e44865dab05e4b99cd485074132.1592203650.git.mchehab+huawei@kernel.orgSigned-off-by: Jonathan Corbet <corbet@lwn.net>

- Adjust title markup;
- Adjust identation.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/444743782e5c8b8085d8016c8be3baabe4d23b53.1592203650.git.mchehab+huawei@kernel.orgSigned-off-by: Jonathan Corbet <corbet@lwn.net>

- Adjust document title markup;
- use list markups;
- Adjust identations to display properly at ReST output.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/58ba712524318d03b3196bba33cb409472b4807d.1592203650.git.mchehab+huawei@kernel.orgSigned-off-by: Jonathan Corbet <corbet@lwn.net>

- Use copyright symbol;
- use title markups;
- adjust indentation;
- mark literal blocks as such.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
[jc: reverted |copy| change]
Link: https://lore.kernel.org/r/b3b2f3f58a9a33f9e8526d4fa36bee305ea4da38.1592203650.git.mchehab+huawei@kernel.orgSigned-off-by: Jonathan Corbet <corbet@lwn.net>

- Use titles markups;
- Adjust identation;
- use literal markup;
- Use the proper notation for footnotes.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/d4def59b3e3042208ed44558ddfd96c8753fb88c.1592203650.git.mchehab+huawei@kernel.orgSigned-off-by: Jonathan Corbet <corbet@lwn.net>

- use title markups;
- mark literal blocks.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/1b1f4e5e57fd2065828cecc9d07afbd247349e94.1592203650.git.mchehab+huawei@kernel.orgSigned-off-by: Jonathan Corbet <corbet@lwn.net>

- Use title/chapter markups;
- Use table markups;
- Mark literal blocks as such;
- Adjust indentation.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/4f8e129a93d04426ad7dd51f109725c48158a46d.1592203650.git.mchehab+huawei@kernel.orgSigned-off-by: Jonathan Corbet <corbet@lwn.net>

Convert this readme file to ReST file format, preserving its
contents as-is as much as possible. The only changes are:

- Added chapter and title markups;
- Added blank lines where needed;
- Added list markups where needed;
- Use a table markup;
- replace markups like `foo' to ``foo``;
- add one extra literal markup to avoid warnings.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/1426be1c7758c0224418352665040220b8a31799.1592203650.git.mchehab+huawei@kernel.orgSigned-off-by: Jonathan Corbet <corbet@lwn.net>

- Place the txt index inside a comment;
- Use title and chapter markups;
- Adjust markups for numbered list;
- Mark literal blocks as such;
- Use tables markup.
- Adjust indentation when needed.

Acked-By: Vinod Koul <vkoul@kernel.org> # dmaengine
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/98977242130efe86d1200f7a167299d4c1c205c5.1592203650.git.mchehab+huawei@kernel.orgSigned-off-by: Jonathan Corbet <corbet@lwn.net>

- Change title markups;
- Mark literal blocks;
- Use list markups at authors/credits;
- Add blank lines when needed;
- Remove trailing whitespaces.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/c71e2c73a787ec7814db09bec3c1359779785bfa.1592203650.git.mchehab+huawei@kernel.orgSigned-off-by: Jonathan Corbet <corbet@lwn.net>

This file is almost compatible with ReST. Just minor changes
were needed:

- Adjust document and titles markups;
- Adjust numbered list markups;
- Add a comments markup for the Contents section;
- Add markups for literal blocks.
Acked-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/c2275ea94e0507a01b020ab66dfa824d8b1c2545.1592203650.git.mchehab+huawei@kernel.orgSigned-off-by: Jonathan Corbet <corbet@lwn.net>

Despite being named with .rst extension, this file doesn't
match the ReST standard. It actually causes a crash at
Sphinx:

	Sphinx parallel build error:
	docutils.utils.SystemMessage: /devel/v4l/docs/Documentation/driver-api/thermal/cpu-idle-cooling.rst:69: (SEVERE/4) Unexpected section title.

Add needed markups for it to be properly parsed.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/7640755514809a7b5fe2756f3702613865877dcb.1592203650.git.mchehab+huawei@kernel.orgSigned-off-by: Jonathan Corbet <corbet@lwn.net>

Changeset 424037b7 ("mm: smaps: Report arm64 guarded pages in smaps")
added a new parameter to a table. This causes Sphinx warnings,
because there's now an extra "-" at the wrong place:

	/devel/v4l/docs/Documentation/filesystems/proc.rst:548: WARNING: Malformed table.
	Text in column margin in table line 29.

	==    =======================================
	rd    readable
	...
	bt  - arm64 BTI guarded page
	==    =======================================

Fixes: 424037b7 ("mm: smaps: Report arm64 guarded pages in smaps")
Fixes: c33e97ef ("docs: filesystems: convert proc.txt to ReST")
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/28c4f4c5c66c0fd7cbce83fe11963ea6154f1d47.1591137229.git.mchehab+huawei@kernel.orgSigned-off-by: Jonathan Corbet <corbet@lwn.net>

Update documentation with TEE bus infrastructure which provides an
interface for kernel client drivers to communicate with corresponding
Trusted Application.
Signed-off-by: Sumit Garg <sumit.garg@linaro.org>
Reviewed-by: Maxim Uvarov <maxim.uvarov@linaro.org>
Link: https://lore.kernel.org/r/1591253979-29067-1-git-send-email-sumit.garg@linaro.orgSigned-off-by: Jonathan Corbet <corbet@lwn.net>

Rationale:
Reduces attack surface on kernel devs opening the links for MITM
as HTTPS traffic is much harder to manipulate.

Deterministic algorithm:
For each file:
  For each line:
    If doesn't contain `\bxmlns\b`:
      For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`:
        If both the HTTP and HTTPS versions
        return 200 OK and serve the same content:
          Replace HTTP with HTTPS.
Signed-off-by: Alexander A. Klimov <grandmaster@al2klimov.de>
Reviewed-by: Alex Shi <alex.shi@linux.alibaba.com>
Link: https://lore.kernel.org/r/20200608181649.74883-1-grandmaster@al2klimov.deSigned-off-by: Jonathan Corbet <corbet@lwn.net>

Add zero-length and one-element arrays to the list.

While I continue replacing zero-length and one-element arrays with
flexible-array members, I need a reference to point people to, so
they don't introduce more instances of such arrays. And while here,
add a note to the "open-coded arithmetic in allocator arguments"
section, on the use of struct_size() and the arrays-to-deprecate
mentioned here.
Co-developed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Acked-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20200608213711.GA22271@embeddedorSigned-off-by: Jonathan Corbet <corbet@lwn.net>

Update the show() usage according to the English version.
Signed-off-by: Chen Zhou <chenzhou10@huawei.com>
Reviewed-by: Alex Shi <alex.shi@linux.alibaba.com>
Link: https://lore.kernel.org/r/20200610025333.84010-1-chenzhou10@huawei.comSigned-off-by: Jonathan Corbet <corbet@lwn.net>

- add complete translation of symbol-namespaces.rst
- fix references to this page within the italian translation
- add document to main indexes
Signed-off-by: Federico Vaga <federico.vaga@vaga.pv.it>
Link: https://lore.kernel.org/r/20200614201053.59502-1-federico.vaga@vaga.pv.itSigned-off-by: Jonathan Corbet <corbet@lwn.net>

Now there are 5 cases. Updated the same.
Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com>
Reviewed-by: John Hubbard <jhubbard@nvidia.com>
Link: https://lore.kernel.org/r/1592422023-7401-1-git-send-email-jrdr.linux@gmail.comSigned-off-by: Jonathan Corbet <corbet@lwn.net>

Fix heading format warnings in admin-guide/sysctl/kernel.rst:

Documentation/admin-guide/sysctl/kernel.rst:339: WARNING: Title underline too short.
hung_task_all_cpu_backtrace:
================

Documentation/admin-guide/sysctl/kernel.rst:650: WARNING: Title underline too short.
oops_all_cpu_backtrace:
================

Fixes: 0ec9dc9b ("kernel/hung_task.c: introduce sysctl to print all traces when a hung task is detected")
Fixes: 60c958d8 ("panic: add sysctl to dump all CPUs backtraces on oops event")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reviewed-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/8af1cb77-4b5a-64b9-da5d-f6a95e537f99@infradead.orgSigned-off-by: Jonathan Corbet <corbet@lwn.net>

Fix Sphinx malformed table warnings in filesystems/locking.rst:

lnx-58-rc1/Documentation/filesystems/locking.rst:443: WARNING: Malformed table.
Text in column margin in table line 8.

lnx-58-rc1/Documentation/filesystems/locking.rst:620: WARNING: Malformed table.
Text in column margin in table line 2.

Fixes: ec23eb54 ("docs: fs: convert docs without extension to ReST")
Fixes: c1e8d7c6 ("mmap locking API: convert mmap_sem comments")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Michel Lespinasse <walken@google.com>
Link: https://lore.kernel.org/r/12c2afd1-2dcf-2ea0-02aa-bc2759729c77@infradead.orgSigned-off-by: Jonathan Corbet <corbet@lwn.net>

Remove SH-5 documentation index entries following the removal
of SH-5 source code.

Error: Cannot open file ../arch/sh/mm/tlb-sh5.c
Error: Cannot open file ../arch/sh/mm/tlb-sh5.c
Error: Cannot open file ../arch/sh/include/asm/tlb_64.h
Error: Cannot open file ../arch/sh/include/asm/tlb_64.h
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/71e1f336-ef5c-f5e9-25cf-16bd4439b9f9@infradead.orgSigned-off-by: Jonathan Corbet <corbet@lwn.net>

The lengths of underlines must match the titles to avoid build warnings.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Mark Gross<mgross@linux.intel.com>
Link: https://lore.kernel.org/r/20200615203645.11545-1-xypron.glpk@gmx.deSigned-off-by: Jonathan Corbet <corbet@lwn.net>

Document the efi=novamap kernel command line parameter.
Put the efi parameters into alphabetic order.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Link: https://lore.kernel.org/r/20200616104012.4780-1-xypron.glpk@gmx.deSigned-off-by: Jonathan Corbet <corbet@lwn.net>

My D-Link and Yandex addresses don't exist anymore, map them to my
private box.
Signed-off-by: Alexander Lobakin <alobakin@pm.me>
Link: https://lore.kernel.org/r/5YUtoWlS7NX1N6TxI4ddZ9V-Yx8Bn8wzrEVJqfkTuwEzZjAsJg157goV81xPAU76k84Nis2uBwdHWk4JmYHbvGmd_JcBTk-rZDVpFNPNolU=@pm.meSigned-off-by: Jonathan Corbet <corbet@lwn.net>

Pull SafeSetID update from Micah Morton:
 "Add additional LSM hooks for SafeSetID

  SafeSetID is capable of making allow/deny decisions for set*uid calls
  on a system, and we want to add similar functionality for set*gid
  calls.

  The work to do that is not yet complete, so probably won't make it in
  for v5.8, but we are looking to get this simple patch in for v5.8
  since we have it ready.

  We are planning on the rest of the work for extending the SafeSetID
  LSM being merged during the v5.9 merge window"

* tag 'LSM-add-setgid-hook-5.8-author-fix' of git://github.com/micah-morton/linux:
  security: Add LSM hooks to set*gid syscalls

The SafeSetID LSM uses the security_task_fix_setuid hook to filter
set*uid() syscalls according to its configured security policy. In
preparation for adding analagous support in the LSM for set*gid()
syscalls, we add the requisite hook here. Tested by putting print
statements in the security_task_fix_setgid hook and seeing them get hit
during kernel boot.
Signed-off-by: Thomas Cedeno <thomascedeno@google.com>
Signed-off-by: Micah Morton <mortonm@chromium.org>

Pull btrfs updates from David Sterba:
 "This reverts the direct io port to iomap infrastructure of btrfs
  merged in the first pull request. We found problems in invalidate page
  that don't seem to be fixable as regressions or without changing iomap
  code that would not affect other filesystems.

  There are four reverts in total, but three of them are followup
  cleanups needed to revert a43a67a2 cleanly. The result is the
  buffer head based implementation of direct io.

  Reverts are not great, but under current circumstances I don't see
  better options"

* tag 'for-5.8-part2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
  Revert "btrfs: switch to iomap_dio_rw() for dio"
  Revert "fs: remove dio_end_io()"
  Revert "btrfs: remove BTRFS_INODE_READDIO_NEED_LOCK"
  Revert "btrfs: split btrfs_direct_IO to read and write part"