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Filename Latest commit message Latest commit date
Brian Foster 3602df3f1f xfs: rework insert range into an atomic operation 
commit dd87f87d87fa4359a54e7b44549742f579e3e805 upstream.

The insert range operation uses a unique transaction and ilock cycle
for the extent split and each extent shift iteration of the overall
operation. While this works, it is risks racing with other
operations in subtle ways such as COW writeback modifying an extent
tree in the middle of a shift operation.

To avoid this problem, make insert range atomic with respect to
ilock. Hold the ilock across the entire operation, replace the
individual transactions with a single rolling transaction sequence
and relog the inode to keep it moving in the log. This guarantees
that nothing else can change the extent mapping of an inode while
an insert range operation is in progress.

Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Allison Collins <allison.henderson@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Acked-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Chandan Babu R <chandan.babu@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-10-29 10:20:32 +02:00
arch ARM: dts: imx6sx: add missing properties for sram 2022-10-26 13:22:55 +02:00
block
certs
crypto crypto: akcipher - default implementation for setting a private key 2022-10-26 13:22:45 +02:00
Documentation iio: ABI: Fix wrong format of differential capacitance channel ABI. 2022-10-26 13:22:34 +02:00
drivers thermal: intel_powerclamp: Use first online CPU as control_cpu 2022-10-26 13:23:01 +02:00
fs xfs: rework insert range into an atomic operation 2022-10-29 10:20:32 +02:00
include inet: fully convert sk->sk_rx_dst to RCU rules 2022-10-26 13:23:01 +02:00
init
ipc
kernel cgroup/cpuset: Enable update_tasks_cpumask() on top_cpuset 2022-10-26 13:22:45 +02:00
lib dyndbg: let query-modname override actual module name 2022-10-26 13:22:37 +02:00
LICENSES
mm mm: pagewalk: Fix race between unmap and page walker 2022-10-15 07:54:36 +02:00
net inet: fully convert sk->sk_rx_dst to RCU rules 2022-10-26 13:23:01 +02:00
samples
scripts kbuild: remove the target in signal traps when interrupted 2022-10-26 13:22:46 +02:00
security efi: Correct Macmini DMI match in uefi cert quirk 2022-10-15 07:54:39 +02:00
sound ALSA: hda/hdmi: Don't skip notification handling during PM operation 2022-10-26 13:22:31 +02:00
tools perf intel-pt: Fix segfault in intel_pt_print_info() with uClibc 2022-10-26 13:22:59 +02:00
usr
virt
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS
Makefile Linux 5.4.220 2022-10-26 13:23:01 +02:00
README

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.