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Caleb Sander Mateos 81b4d1a1d0 ublk: update UBLK_F_SUPPORT_ZERO_COPY comment in UAPI header 
UBLK_F_SUPPORT_ZERO_COPY has a very old comment describing the initial
idea for how zero-copy would be implemented. The actual implementation
added in commit 1f6540e2aa ("ublk: zc register/unregister bvec") uses
io_uring registered buffers rather than shared memory mapping.
Remove the inaccurate remarks about mapping ublk request memory into the
ublk server's address space and requiring 4K block size. Replace them
with a description of the current zero-copy mechanism.

Signed-off-by: Caleb Sander Mateos <csander@purestorage.com>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Link: https://lore.kernel.org/r/20250621171015.354932-1-csander@purestorage.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2025-06-24 20:45:31 -06:00
arch Add the CONFIG_X86_NATIVE_CPU=y build option to locally optimize the kernel 2025-05-26 21:41:14 -07:00
block block: use plug request list tail for one-shot backmerge attempt 2025-06-11 08:48:46 -06:00
certs sign-file,extract-cert: use pkcs11 provider for OPENSSL MAJOR >= 3 2024-09-20 19:52:48 +03:00
crypto This update includes the following changes: 2025-05-26 13:47:28 -07:00
Documentation Documentation: ublk: Separate UBLK_F_AUTO_BUF_REG fallback behavior sublists 2025-06-13 09:25:42 -06:00
drivers ublk: build batch from IOs in same io_ring_ctx and io task 2025-06-24 20:44:52 -06:00
fs This update includes the following changes: 2025-05-26 13:47:28 -07:00
include ublk: update UBLK_F_SUPPORT_ZERO_COPY comment in UAPI header 2025-06-24 20:45:31 -06:00
init Scheduler updates for v6.16: 2025-05-26 15:19:58 -07:00
io_uring Locking changes for v6.16: 2025-05-26 14:42:07 -07:00
ipc VFS: rename lookup_one_len family to lookup_noperm and remove permission check 2025-04-08 11:24:36 +02:00
kernel Performance events updates for v6.16: 2025-05-26 15:40:23 -07:00
lib linux_kselftest-kunit-6.16-rc1 2025-05-26 14:29:44 -07:00
LICENSES LICENSES: add 0BSD license text 2024-09-01 20:43:24 -07:00
mm Locking changes for v6.16: 2025-05-26 14:42:07 -07:00
net vfs-6.16-rc1.coredump 2025-05-26 11:17:01 -07:00
rust RCU pull request for v6.16 2025-05-26 14:20:50 -07:00
samples configfs-for-v6.16 2025-05-26 12:28:55 -07:00
scripts Core x86 updates for v6.16: 2025-05-26 16:04:17 -07:00
security vfs-6.16-rc1.async.dir 2025-05-26 08:02:43 -07:00
sound Core x86 updates for v6.16: 2025-05-26 16:04:17 -07:00
tools selftests: ublk: don't take same backing file for more than one ublk devices 2025-06-24 20:45:31 -06:00
usr usr/include: openrisc: don't HDRTEST bpf_perf_event.h 2025-05-12 15:03:17 +09:00
virt ARM: 2025-04-08 13:47:55 -07:00
.clang-format clang-format: Update the ForEachMacros list for v6.15-rc1 2025-04-13 11:03:59 +02:00
.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 kbuild: Create intermediate vmlinux build with relocations preserved 2025-03-17 00:29:50 +09:00
.mailmap 22 hotfixes. 13 are cc:stable and the remainder address post-6.14 issues 2025-05-25 07:48:35 -07:00
.rustfmt.toml
COPYING
CREDITS MAINTAINERS: update SLAB ALLOCATOR maintainers 2025-04-17 20:10:06 -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 Core x86 updates for v6.16: 2025-05-26 16:04:17 -07:00
Makefile Linux 6.15 2025-05-25 16:09:23 -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.