mirror of
https://github.com/torvalds/linux.git
synced 2026-05-12 16:18:45 +02:00
Linux kernel source tree
c9d066ebfd
ublk_get_req_ref() and ublk_put_req_ref() currently call ublk_need_req_ref(ubq) to check whether the ublk device features require reference counting of its requests. However, all callers already know that reference counting is required: - __ublk_check_and_get_req() is only called from ublk_check_and_get_req() if user copy is enabled, and from ublk_register_io_buf() if zero copy is enabled - ublk_io_release() is only called for requests registered by ublk_register_io_buf(), which requires zero copy - ublk_ch_read_iter() and ublk_ch_write_iter() only call ublk_put_req_ref() if ublk_check_and_get_req() succeeded, which requires user copy to be enabled So drop the ublk_need_req_ref() check and the ubq argument in ublk_get_req_ref() and ublk_put_req_ref(). Signed-off-by: Caleb Sander Mateos <csander@purestorage.com> Reviewed-by: Ming Lei <ming.lei@redhat.com> Link: https://lore.kernel.org/r/20250620151008.3976463-14-csander@purestorage.com Signed-off-by: Jens Axboe <axboe@kernel.dk> |
||
|---|---|---|
| arch | ||
| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| io_uring | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| rust | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .clippy.toml | ||
| .cocciconfig | ||
| .editorconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| .pylintrc | ||
| .rustfmt.toml | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| 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.