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authorJohannes Weiner <hannes@cmpxchg.org>2011-03-23 16:42:29 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-03-23 19:46:27 -0700
commit5564e88ba6fd2f6dcd83a592771810cd84b5ae80 (patch)
treee2b3a0835067825308a254c7531c891d4d69e701 /mm/page_cgroup.c
parentde3638d9cdc89ac899225996b8dcedbcbc53bdd2 (diff)
memcg: condense page_cgroup-to-page lookup points
The per-cgroup LRU lists string up 'struct page_cgroup's. To get from those structures to the page they represent, a lookup is required. Currently, the lookup is done through a direct pointer in struct page_cgroup, so a lot of functions down the callchain do this lookup by themselves instead of receiving the page pointer from their callers. The next patch removes this pointer, however, and the lookup is no longer that straight-forward. In preparation for that, this patch only leaves the non-optional lookups when coming directly from the LRU list and passes the page down the stack. Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp> Cc: Balbir Singh <balbir@linux.vnet.ibm.com> Cc: Minchan Kim <minchan.kim@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/page_cgroup.c')
0 files changed, 0 insertions, 0 deletions