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(parent: 0f467df) | patch
percpu_counter: make APIs irq safe
authorShaohua Li <shli@fusionio.com>
Thu, 24 Oct 2013 08:06:45 +0000 (09:06 +0100)
committerJens Axboe <axboe@kernel.dk>
Fri, 25 Oct 2013 10:55:59 +0000 (11:55 +0100)
commit960dd36b75f908e5c51d1606acd990e4dff8ddfc
tree7479b126910fc14f0b1690b9414c8bf9033dce70tree | snapshot
parent0f467df2a77eff2ca2a7002425059df32c9e7c46commit | diff
percpu_counter: make APIs irq safe

In my usage, sometimes the percpu APIs are called with irq locked,
sometimes not. lockdep complains there is potential deadlock. Let's
always use percpucounter lock in irq safe way. There should be no
performance penality, as all those are slow code path.

Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Shaohua Li <shli@fusionio.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
lib/percpu_counter.c diff | blob | history
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