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837596a61b
Freeing an AR buffer page just to allocate a new page immediately afterwards is not only a pointless effort but also dangerous because the allocation can fail, which would result in an oops later. Split ar_context_add_page() into two functions so that we can reuse the old page directly. Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Tested-by: Maxim Levitsky <maximlevitsky@gmail.com> Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>