Messages in this thread | ![/](/images/icornerl.gif) | | Date | Mon, 19 May 2014 15:46:39 -0700 | From | Andrew Morton <> | Subject | Re: [PATCH 6/6] ipc/sem.c: make semctl(,,{GETNCNT,GETZCNT}) standard compliant |
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On Sun, 18 May 2014 09:58:37 +0200 Manfred Spraul <manfred@colorfullife.com> wrote:
> SUSv4 clearly defines how semncnt and semzcnt must be calculated: > A task waits on exactly one semaphore: > The semaphore from the first operation in the sop array that cannot proceed. > > The Linux implementation never followed the standard, it tried to count all > semaphores that might be the reason why a task sleeps. > > This patch fixes that.
What are the back-compatibility implications of this change?
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