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f2e030dd7a
The IORING_SQ_NEED_WAKEUP flag is now set using atomic_or() which implies a full barrier on some architectures but it is not required to do so. Use the more appropriate smp_mb__after_atomic() which avoids the extra barrier on those architectures. Signed-off-by: Almog Khaikin <almogkh@gmail.com> Link: https://lore.kernel.org/r/20220426163403.112692-1-almogkh@gmail.com Fixes: 8018823e6987 ("io_uring: serialize ctx->rings->sq_flags with atomic_or/and") Signed-off-by: Jens Axboe <axboe@kernel.dk> |
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| drivers | ||
| fs | ||
| include | ||
| init | ||
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| kernel | ||
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| 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.