a090fc9761
DMA setup lock timeout protection is added when DMA setup frames are received. It's a function outside the protocol and used to prevent SATA disk I/Os from being delivered for a long time. The default value is 100ms, it's too strict and easily triggered timeout when the disk is overloaded or faulty. Based on the average I/O latency of 300 disks, we adjust the value to 2.5s. Signed-off-by: Xingui Yang <yangxingui@huawei.com> Signed-off-by: Yihang Li <liyihang9@huawei.com> Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com> Link: https://lore.kernel.org/r/1684118481-95908-3-git-send-email-chenxiang66@hisilicon.com Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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.