STINNER Victor <vstin...@redhat.com> added the comment:
> Also sizehint=0 was rejected before 2fb9ae9dfc5a6830d902332ba93b13387e292ddb.
> Now it is accepted.
DESCRIPTION
epoll_create() creates a new epoll(7) instance. Since Linux 2.6.8, the
size argument is ignored, but must be greater than zero; see NOTES
below.
(...)
NOTES
In the initial epoll_create() implementation, the size argument
informed the kernel of the number of file descriptors that the caller
expected to add to the epoll instance. The kernel used this informa‐
tion as a hint for the amount of space to initially allocate in inter‐
nal data structures describing events. (If necessary, the kernel would
allocate more space if the caller's usage exceeded the hint given in
size.) Nowadays, this hint is no longer required (the kernel dynami‐
cally sizes the required data structures without needing the hint), but
size must still be greater than zero, in order to ensure backward com‐
patibility when new epoll applications are run on older kernels.
----------
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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue32568>
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