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eventfd manpage missing EFD_SEMAPHORE flag

Bug 14001 bugzilla-daemon-590EEB7GvNiWaY/[email protected] 1 participant 3 messages Aug 30, 2010 2 messages not in the archive Man-pages: manual pages for Linux -- Sections 2, 3, 4, 5, and 7

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bugzilla-daemon-590EEB7GvNiWaY/[email protected]

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https://bugzilla.kernel.org/show_bug.cgi?id=14001

Michael Kerrisk <[email protected]> changed:

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--- Comment #1 from Michael Kerrisk <[email protected]> 2010-08-30 05:29:50 --- For man-pages-3.26, I added this text:

EFD_SEMAPHORE (since Linux 2.6.30)
Provide semaphore-like semantics for reads from the new file descriptor. See below.
...

              *  If EFD_SEMAPHORE  was  not  specified  and  the
                 eventfd  counter  has  a  nonzero value, then a

read(2) returns 8 bytes containing that value, and the counter's value is reset to zero.

* If EFD_SEMAPHORE was specified and the eventfd counter has a nonzero value, then a read(2) returns 8 bytes containing the value 1, and the counter's value is decremented by 1.

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Michael Kerrisk <[email protected]> changed:

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Status|NEW |ASSIGNED

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Michael Kerrisk <[email protected]> changed:

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             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |CODE_FIX
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