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authorHugh Dickins <hugh@veritas.com>2005-10-30 02:16:05 +0100
committerLinus Torvalds <torvalds@g5.osdl.org>2005-10-30 05:40:38 +0100
commit4294621f41a85497019fae64341aa5351a1921b7 (patch)
treefdeb7eb44384a99d0679ffa6de5019bab0ea2166 /fs/hpfs/dnode.c
parent[PATCH] mm: mm_init set_mm_counters (diff)
downloadlinux-4294621f41a85497019fae64341aa5351a1921b7.tar.xz
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[PATCH] mm: rss = file_rss + anon_rss
I was lazy when we added anon_rss, and chose to change as few places as possible. So currently each anonymous page has to be counted twice, in rss and in anon_rss. Which won't be so good if those are atomic counts in some configurations. Change that around: keep file_rss and anon_rss separately, and add them together (with get_mm_rss macro) when the total is needed - reading two atomics is much cheaper than updating two atomics. And update anon_rss upfront, typically in memory.c, not tucked away in page_add_anon_rmap. Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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