Jens Axboe faf7b51c06 io_uring: batch account ->req_issue and task struct references
Identical to how we handle the ctx reference counts, increase by the
batch we're expecting to submit, and handle any slow path residual,
if any. The request alloc-and-issue path is very hot, and this makes
a noticeable difference by avoiding an two atomic incs for each
individual request.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-10-07 12:55:42 -06:00
2020-09-26 11:18:37 -07:00
2020-09-27 12:18:57 -07:00
2020-09-26 10:33:57 -07:00
2020-09-24 09:00:05 -07:00
2020-09-24 09:05:04 -07:00
2020-09-27 14:38:10 -07:00

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.
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