On Mon, Feb 03, 2014 at 07:53:36PM -0500, Johannes Weiner wrote:
> Page cache radix tree slots are usually stabilized by the page lock,
> but shmem's swap cookies have no such thing. Because the overall
> truncation loop is lockless, the swap entry is currently confirmed by
> a tree lookup and the
Page cache radix tree slots are usually stabilized by the page lock,
but shmem's swap cookies have no such thing. Because the overall
truncation loop is lockless, the swap entry is currently confirmed by
a tree lookup and then deleted by another tree lookup under the same
tree lock region.
Use ra
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