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c484d41042
Minor optimization (though it doesn't help in the PREEMPT case, severely constrained by small ZAP_BLOCK_SIZE). free_pages_and_swap_cache works in chunks of 16, calling release_pages which works in chunks of PAGEVEC_SIZE. But PAGEVEC_SIZE was dropped from 16 to 14 in 2.6.10, so we're now doing more spin_lock_irq'ing than necessary: use PAGEVEC_SIZE throughout. Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Nick Piggin <nickpiggin@yahoo.com.au> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>