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Don't hold any locks while waiting in EpollFile

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Zhang Junyang 2024-09-06 20:05:01 +08:00 committed by Tate, Hongliang Tian
parent 64e43d34aa
commit c68302f700
1 changed files with 5 additions and 3 deletions
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6
kernel/src/syscall/epoll.rs
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@ -106,9 +106,11 @@ fn do_epoll_wait(
None None
}; };
let epoll_file_arc = {
let file_table = ctx.process.file_table().lock(); let file_table = ctx.process.file_table().lock();
let epoll_file = file_table file_table.get_file(epfd)?.clone()
.get_file(epfd)? };
let epoll_file = epoll_file_arc
.downcast_ref::<EpollFile>() .downcast_ref::<EpollFile>()
.ok_or(Error::with_message(Errno::EINVAL, "not epoll file"))?; .ok_or(Error::with_message(Errno::EINVAL, "not epoll file"))?;
let result = epoll_file.wait(max_events, timeout.as_ref()); let result = epoll_file.wait(max_events, timeout.as_ref());