mainlining shenanigans
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Al Viro 8fad7767ed ITER_PIPE: allocate buffers as we go in copy-to-pipe primitives
New helper: append_pipe().  Extends the last buffer if possible,
allocates a new one otherwise.  Returns page and offset in it
on success, NULL on failure.  iov_iter is advanced past the
data we've got.

Use that instead of push_pipe() in copy-to-pipe primitives;
they get simpler that way.  Handling of short copy (in "mc" one)
is done simply by iov_iter_revert() - iov_iter is in consistent
state after that one, so we can use that.

[Fix for braino caught by Liu Xinpeng <liuxp11@chinatelecom.cn> folded in]
[another braino fix, this time in copy_pipe_to_iter() and pipe_zero();
caught by testcase from Hugh Dickins]

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2022-08-08 22:37:17 -04:00
arch pci-v5.20-changes 2022-08-04 19:30:35 -07:00
block new iov_iter flavour - ITER_UBUF 2022-08-08 22:37:15 -04:00
certs certs: make system keyring depend on x509 parser 2022-07-24 12:53:55 -07:00
crypto for-5.20/block-2022-08-04 2022-08-04 20:00:14 -07:00
Documentation for-5.20/block-2022-08-04 2022-08-04 20:00:14 -07:00
drivers for-5.20/block-2022-08-04 2022-08-04 20:00:14 -07:00
fs splice: stop abusing iov_iter_advance() to flush a pipe 2022-08-08 22:37:16 -04:00
include new iov_iter flavour - ITER_UBUF 2022-08-08 22:37:15 -04:00
init Several core optimizations: 2022-08-03 09:45:08 -07:00
io_uring iov_iter work, part 1 - isolated cleanups and optimizations. 2022-08-03 13:50:22 -07:00
ipc ipc: Free mq_sysctls if ipc namespace creation failed 2022-06-22 17:47:41 -05:00
kernel xen: branch for v6.0-rc1 2022-08-04 15:10:55 -07:00
lib ITER_PIPE: allocate buffers as we go in copy-to-pipe primitives 2022-08-08 22:37:17 -04:00
LICENSES LICENSES/LGPL-2.1: Add LGPL-2.1-or-later as valid identifiers 2021-12-16 14:33:10 +01:00
mm new iov_iter flavour - ITER_UBUF 2022-08-08 22:37:15 -04:00
net SPDX changes for 6.0-rc1 2022-08-04 12:12:54 -07:00
samples SPDX changes for 6.0-rc1 2022-08-04 12:12:54 -07:00
scripts SPDX changes for 6.0-rc1 2022-08-04 12:12:54 -07:00
security linux-kselftest-kunit-5.20-rc1 2022-08-02 19:34:45 -07:00
sound pci-v5.20-changes 2022-08-04 19:30:35 -07:00
tools platform-drivers-x86 for v6.0-1 2022-08-04 18:19:14 -07:00
usr Not a lot of material this cycle. Many singleton patches against various 2022-05-27 11:22:03 -07:00
virt Merge remote-tracking branch 'kvm/next' into kvm-next-5.20 2022-08-01 03:21:00 -04:00
.clang-format clang-format: Fix space after for_each macros 2022-05-20 19:27:16 +02:00
.cocciconfig
.get_maintainer.ignore Opt out of scripts/get_maintainer.pl 2019-05-16 10:53:40 -07:00
.gitattributes .gitattributes: use 'dts' diff driver for dts files 2019-12-04 19:44:11 -08:00
.gitignore kbuild: split the second line of *.mod into *.usyms 2022-05-08 03:16:59 +09:00
.mailmap ARM: SoC fixes for 5.19, part 4 2022-07-27 09:43:07 -07:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS drm for 5.20/6.0 2022-08-03 19:52:08 -07:00
Kbuild kbuild: rename hostprogs-y/always to hostprogs/always-y 2020-02-04 01:53:07 +09:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS for-5.20/block-2022-08-04 2022-08-04 20:00:14 -07:00
Makefile linux-kselftest-next-5.20-rc1 2022-08-02 19:44:56 -07:00
README Drop all 00-INDEX files from Documentation/ 2018-09-09 15:08:58 -06:00

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.