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Lukas Bulwahn d6ace46c82 ext4: remove obsolete EXT3 config options 
In June 2015, commit c290ea01ab ("fs: Remove ext3 filesystem driver")
removed the historic ext3 filesystem support as ext3 partitions are fully
supported with the ext4 filesystem support. To simplify updating the kernel
build configuration, which had only EXT3 support but not EXT4 support
enabled, the three config options EXT3_{FS,FS_POSIX_ACL,FS_SECURITY} were
kept, instead of immediately removing them. The three options just enable
the corresponding EXT4 counterparts when configs from older kernel versions
are used to build on later kernel versions. This ensures that the kernels
from those kernel build configurations would then continue to have EXT4
enabled for supporting booting from ext3 and ext4 file systems, to avoid
potential unexpected surprises.

Given that the kernel build configuration has no backwards-compatibility
guarantee and this transition phase for such build configurations has been
in place for a decade, we can reasonably expect all such users to have
transitioned to use the EXT4 config options in their config files at this
point in time. With that in mind, the three EXT3 config options are
obsolete by now.

Remove the obsolete EXT3 config options.

Signed-off-by: Lukas Bulwahn <lukas.bulwahn@redhat.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
2025-09-25 14:47:05 -04:00
arch - Convert the SSB mitigation to the attack vector controls which got forgotten 2025-08-31 09:20:17 -07:00
block block: validate QoS before calling __rq_qos_done_bio() 2025-08-26 10:34:08 -06:00
certs sign-file,extract-cert: use pkcs11 provider for OPENSSL MAJOR >= 3 2024-09-20 19:52:48 +03:00
crypto Significant patch series in this pull request: 2025-08-03 16:23:09 -07:00
Documentation - Convert the SSB mitigation to the attack vector controls which got forgotten 2025-08-31 09:20:17 -07:00
drivers - Remove unnecessary and noisy WARN_ONs in gic-v5's init path 2025-08-31 09:07:37 -07:00
fs ext4: remove obsolete EXT3 config options 2025-09-25 14:47:05 -04:00
include drm fixes for 6.16-rc4 2025-08-28 19:56:32 -07:00
init hardening: Require clang 20.1.0 for __counted_by 2025-08-29 12:04:53 -07:00
io_uring io_uring/kbuf: always use READ_ONCE() to read ring provided buffer lengths 2025-08-28 05:48:34 -06:00
ipc vfs-6.17-rc1.mmap_prepare 2025-07-28 13:43:25 -07:00
kernel - Fix a stall on the CPU offline path due to mis-counting a deadline server 2025-08-31 09:13:00 -07:00
lib hardening fixes for v6.17-rc4 2025-08-31 08:56:45 -07:00
LICENSES LICENSES: Replace the obsolete address of the FSF in the GFDL-1.2 2025-07-24 11:15:39 +02:00
mm memblock fixes for v6.17-rc4 2025-08-28 15:46:06 -07:00
net net: ipv4: fix regression in local-broadcast routes 2025-08-28 10:52:30 +02:00
rust Driver core fixes for 6.16-rc3 2025-08-23 09:04:32 -04:00
samples Significant patch series in this pull request: 2025-08-03 16:23:09 -07:00
scripts Kbuild updates for v6.17 2025-08-06 07:32:52 +03:00
security + Features 2025-08-04 08:17:28 -07:00
sound ALSA: usb-audio: Use correct sub-type for UAC3 feature unit validation 2025-08-21 17:10:14 +02:00
tools Two arm64 fixes: 2025-08-30 10:43:53 -07:00
usr usr/include: openrisc: don't HDRTEST bpf_perf_event.h 2025-05-12 15:03:17 +09:00
virt Merge tag 'kvm-x86-no_assignment-6.17' of https://github.com/kvm-x86/linux into HEAD 2025-07-29 08:36:42 -04:00
.clang-format Linux 6.15-rc5 2025-05-06 16:39:25 +10:00
.clippy.toml rust: clean Rust 1.88.0's warning about clippy::disallowed_macros configuration 2025-05-07 00:11:47 +02:00
.cocciconfig
.editorconfig .editorconfig: remove trim_trailing_whitespace option 2024-06-13 16:47:52 +02:00
.get_maintainer.ignore MAINTAINERS: Retire Ralf Baechle 2024-11-12 15:48:59 +01:00
.gitattributes .gitattributes: set diff driver for Rust source code files 2023-05-31 17:48:25 +02:00
.gitignore gitignore: allow .pylintrc to be tracked 2025-07-02 17:10:04 -06:00
.mailmap .mailmap: add entry for Easwar Hariharan 2025-08-19 16:35:55 -07:00
.pylintrc docs: add a .pylintrc file with sys path for docs scripts 2025-04-09 12:10:33 -06:00
.rustfmt.toml rust: add .rustfmt.toml 2022-09-28 09:02:20 +02:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: retire Boris from TLS maintainers 2025-08-26 17:36:01 -07:00
Kbuild drm: ensure drm headers are self-contained and pass kernel-doc 2025-02-12 10:44:43 +02:00
Kconfig io_uring: Rename KConfig to Kconfig 2025-02-19 14:53:27 -07:00
MAINTAINERS gpio fixes for v6.17-rc4 2025-08-31 08:49:55 -07:00
Makefile Linux 6.17-rc4 2025-08-31 15:33:07 -07:00
README README: Fix spelling 2024-03-18 03:36:32 -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 reStructuredText 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.