Messages in this thread | | | Date | Sun, 16 May 2010 00:11:16 -0700 (PDT) | Subject | Re: [PATCH 1/8] buffer: make invalidate_bdev() drain all percpu LRU add caches | From | David Miller <> |
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From: Tejun Heo <tj@kernel.org> Date: Sat, 15 May 2010 20:09:27 +0200
> invalidate_bdev() should release all page cache pages which are clean > and not being used; however, if some pages are still in the percpu LRU > add caches on other cpus, those pages are considered in used and don't > get released. Fix it by calling lru_add_drain_all() before trying to > invalidate pages. > > This problem was discovered while testing block automatic native > capacity unlocking. Null pages which were read before automatic > unlocking didn't get released by invalidate_bdev() and ended up > interfering with partition scan after unlocking. > > Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: David S. Miller <davem@davemloft.net>
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