Re: [PATCH -next] ipc: make refcounter atomic (was Re: linux-next:Tree for Apr 23 [ Call-Traces: lib/debugobjects.c | kernel/rcupdate.c | kernel/rcutree.c])

From: Rik van Riel
Date: Thu Apr 25 2013 - 08:56:17 EST

On 04/24/2013 07:05 PM, Sedat Dilek wrote:
On Thu, Apr 25, 2013 at 12:16 AM, Davidlohr Bueso
<davidlohr.bueso@xxxxxx> wrote:

This patch converts the IPC RCU header's reference counter to atomic_t. The return of
ipc_rcu_getref() is modified to inform the callers if it actually succeeded.

Now all callers return -EIDRM upon failure and abort the current operation. Two exceptions are
in semaphore code where sem_getref_and_unlock() and sem_getref() trigger a warning but proceed
to freeing up any held locks.

Signed-off-by: Davidlohr Bueso <davidlohr.bueso@xxxxxx>
Suggested-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
CC: Rik van Riel <riel@xxxxxxxxxxx>
CC: Paul McKenney <paul.mckenney@xxxxxxxxxx>
CC: Sedat Dilek <sedat.dilek@xxxxxxxxx>
CC: Emmanuel Benisty <benisty.e@xxxxxxxxx>
CC: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>

Missing my Reported-by ...! please add also my Tested-by!

And my ax!

I mean ... Reviewed-by: Rik van Riel <riel@xxxxxxxxxx>

All rights reversed.
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at
Please read the FAQ at