Re: [RFC PATCH for-next 2/4] epoll: epoll() syscall declaration

From: Nathaniel Yazdani
Date: Mon Feb 24 2014 - 00:44:18 EST


On Sun, Feb 23, 2014 at 9:32 PM, Eric Wong <normalperson@xxxxxxxx> wrote:
> Nathaniel Yazdani <n1ght.4nd.d4y@xxxxxxxxx> wrote:
>> +asmlinkage long sys_epoll(int ep, struct epoll __user *in,
>> + unsigned int inc, struct epoll __user *out,
>> + unsigned int outc, int timeout);
>
> I can understand using the new struct for 'in', but 'out' could just be
> "struct epoll_event *" like sys_epoll_wait, right?
>
>> asmlinkage long sys_epoll_wait(int epfd, struct epoll_event __user *events,

Yeah and I went back and forth on that, it just seemed to me that the
inconsistency could be confusing to others... maybe instead of defining a new
struct to begin with it might make me sense to just have an 'infd' array of file
descriptors in addition to an 'in' array of epoll_event struct
(obviously the length
of these would be identical).
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