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Xiang Chen
b711ef5e17
Currently we sync irq to avoid freeing task before using task in I/O completion. After adding io_uring support, we need to do something similar for poll queues. As the process of CQ entries on poll queue are protected by spinlock cq->lock, we can use spin_lock() + spin_unlock() on cq->lock to make sure that CQ entries are processed to completion and then the complete queue is synced. Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com> Link: https://lore.kernel.org/r/1678169355-76215-4-git-send-email-chenxiang66@hisilicon.com Reviewed-by: John Garry <john.garry@huawei.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.