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authorHugh Dickins <hugh@veritas.com>2009-01-07 01:39:41 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2009-01-07 02:59:04 +0300
commitb962716b459505a8d83aea313fea0abe76749f42 (patch)
treeb401e882f2ee8ff5a11209057496e603c211e8fe /Documentation/io_ordering.txt
parent60371d971a3d01afd102f0bbf2681f32ecc31d78 (diff)
downloadlinux-b962716b459505a8d83aea313fea0abe76749f42.tar.xz
mm: optimize get_scan_ratio for no swap
Rik suggests a simplified get_scan_ratio() for !CONFIG_SWAP. Yes, the gcc optimizer gives us that, when nr_swap_pages is #defined as 0L. Move usual declaration to swapfile.c: it never belonged in page_alloc.c. Signed-off-by: Hugh Dickins <hugh@veritas.com> Cc: Lee Schermerhorn <lee.schermerhorn@hp.com> Acked-by: Rik van Riel <riel@redhat.com> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Robin Holt <holt@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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