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7b31f4daeb
svc_get_next_xprt() does a lot more than just get an xprt. It also decides if it needs to sleep, depending not only on the availability of xprts but also on the need to exit or handle external work. So rename it to svc_rqst_wait_for_work() and only do the testing and waiting. Move all the waiting-related code out of svc_recv() into the new svc_rqst_wait_for_work(). Move the dequeueing code out of svc_get_next_xprt() into svc_recv(). Previously svc_xprt_dequeue() would be called twice, once before waiting and possibly once after. Now instead rqst_should_sleep() is called twice. Once to decide if waiting is needed, and once to check against after setting the task state do see if we might have missed a wakeup. Signed-off-by: NeilBrown <neilb@suse.de> Signed-off-by: Chuck Lever <chuck.lever@oracle.com> |
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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.