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Kernel for Galaxy S24, rebased on CLO sources (WIP)
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Filipe Manana ffa8fc603d btrfs: remove ordered extent check and wait during fallocate 
For fallocate() we have this loop that checks if we have ordered extents
after locking the file range, and if so unlock the range, wait for ordered
extents, and retry until we don't find more ordered extents.

This logic was needed in the past because:

1) Direct IO writes within the i_size boundary did not take the inode's
   VFS lock. This was because that lock used to be a mutex, then some
   years ago it was switched to a rw semaphore (commit 9902af79c0
   ("parallel lookups: actual switch to rwsem")), and then btrfs was
   changed to take the VFS inode's lock in shared mode for writes that
   don't cross the i_size boundary (commit e9adabb971 ("btrfs: use
   shared lock for direct writes within EOF"));

2) We could race with memory mapped writes, because memory mapped writes
   don't acquire the inode's VFS lock. We don't have that race anymore,
   as we have a rw semaphore to synchronize memory mapped writes with
   fallocate (and reflinking too). That change happened with commit
   8d9b4a162a ("btrfs: exclude mmap from happening during all
   fallocate operations").

So stop looking for ordered extents after locking the file range when
doing a plain fallocate.

Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
2022-05-16 17:03:09 +02:00
arch powerpc fixes for 5.18 #5 2022-05-15 06:46:03 -07:00
block Revert "block: release rq qos structures for queue without disk" 2022-05-02 10:06:40 -06:00
certs Kbuild updates for v5.18 2022-03-31 11:59:03 -07:00
crypto for-5.18/64bit-pi-2022-03-25 2022-03-26 12:01:35 -07:00
Documentation Driver core fixes for 5.18-rc7 2022-05-15 08:08:51 -07:00
drivers Driver core fixes for 5.18-rc7 2022-05-15 08:08:51 -07:00
fs btrfs: remove ordered extent check and wait during fallocate 2022-05-16 17:03:09 +02:00
include The recent expansion of the sched switch tracepoint inserted a new argument 2022-05-15 06:40:11 -07:00
init Kbuild updates for v5.18 2022-03-31 11:59:03 -07:00
ipc fs: allocate inode by using alloc_inode_sb() 2022-03-22 15:57:03 -07:00
kernel The recent expansion of the sched switch tracepoint inserted a new argument 2022-05-15 06:40:11 -07:00
lib dim: initialize all struct fields 2022-05-09 17:20:37 -07:00
LICENSES LICENSES/LGPL-2.1: Add LGPL-2.1-or-later as valid identifiers 2021-12-16 14:33:10 +01:00
mm hotfixes for 5.18-rc7 2022-05-13 10:22:37 -07:00
net NFS client bugfixes for Linux 5.18 2022-05-13 11:04:37 -07:00
samples sched/tracing: Append prev_state to tp args instead 2022-05-12 00:37:11 +02:00
scripts objtool: Enable unreachable warnings for CLANG LTO 2022-04-19 21:58:48 +02:00
security hardening updates for v5.18-rc1-fix1 2022-03-31 11:43:01 -07:00
sound ASoC: Fixes for v5.18 2022-05-08 10:49:25 +02:00
tools perf tools fixes for v5.18: 5th batch 2022-05-14 11:43:47 -07:00
usr Kbuild updates for v5.18 2022-03-31 11:59:03 -07:00
virt Merge branch 'kvm-fixes-for-5.18-rc5' into HEAD 2022-04-29 12:39:34 -04:00
.clang-format genirq/msi: Make interrupt allocation less convoluted 2021-12-16 22:22:20 +01:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.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 .gitignore: ignore only top-level modules.builtin 2021-05-02 00:43:35 +09:00
.mailmap hotfixes for 5.18-rc7 2022-05-13 10:22:37 -07:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: replace a Microchip AT91 maintainer 2022-02-09 11:30:01 +01:00
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 perf tools fixes for v5.18: 5th batch 2022-05-14 11:43:47 -07:00
Makefile Linux 5.18-rc7 2022-05-15 18:08:58 -07:00
README Drop all 00-INDEX files from Documentation/ 2018-09-09 15:08:58 -06:00

README 

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.