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(parent: 0754445) | patch
refcount_t: Introduce a special purpose refcount type
authorPeter Zijlstra <peterz@infradead.org>
Mon, 14 Nov 2016 17:06:19 +0000 (18:06 +0100)
committerIngo Molnar <mingo@kernel.org>
Fri, 10 Feb 2017 08:04:19 +0000 (09:04 +0100)
commitf405df5de3170c00e5c54f8b7cf4766044a032ba
tree62a9ba9a77852bf103b638a1b580919f0e58ffc4tree | snapshot
parent0754445d71c37a7afd4f0790a9be4cf53c1b8cc4commit | diff
refcount_t: Introduce a special purpose refcount type

Provide refcount_t, an atomic_t like primitive built just for
refcounting.

It provides saturation semantics such that overflow becomes impossible
and thereby 'spurious' use-after-free is avoided.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
include/linux/refcount.h [new file with mode: 0644] blob
lib/Kconfig.debug diff | blob | history
ep93xx device tree rework repo: git://git.maquefel.me/linux.git