| commit | 4294621f41a85497019fae64341aa5351a1921b7 | |
| author | Hugh Dickins <hugh@veritas.com> | |
| Sun, 30 Oct 2005 01:16:05 +0000 (29 18:16 -0700) | ||
| committer | Linus Torvalds <torvalds@g5.osdl.org> | |
| Sun, 30 Oct 2005 04:40:38 +0000 (29 21:40 -0700) | ||
| tree | fdeb7eb44384a99d0679ffa6de5019bab0ea2166 | treesnapshot (tar.gz zip) |
| parent | 404351e67a9facb475abf1492245374a28d13e90 | commitdiff |
[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>
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>
12 files changed: