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3b629f8d6d
Pull support for struct bio recycling from Jens Axboe: "This adds bio recycling support for polled IO, allowing quick reuse of a bio for high IOPS scenarios via a percpu bio_set list. It's good for almost a 10% improvement in performance, bumping our per-core IO limit from ~3.2M IOPS to ~3.5M IOPS" * tag 'io_uring-bio-cache.5-2021-08-30' of git://git.kernel.dk/linux-block: bio: improve kerneldoc documentation for bio_alloc_kiocb() block: provide bio_clear_hipri() helper block: use the percpu bio cache in __blkdev_direct_IO io_uring: enable use of bio alloc cache block: clear BIO_PERCPU_CACHE flag if polling isn't supported bio: add allocation cache abstraction fs: add kiocb alloc cache flag bio: optimize initialization of a bio
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.