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| author | KAMEZAWA Hiroyuki | 2008-10-19 05:28:09 +0200 |
|---|---|---|
| committer | Linus Torvalds | 2008-10-20 17:52:38 +0200 |
| commit | b7abea9630bc8ffc663a751e46680db25c4cdf8d (patch) | |
| tree | b37d5ba073ccea31328812c74598872d49a85735 /mm/memory.c | |
| parent | memcg: move charge swapin under lock (diff) | |
| download | kernel-qcow2-linux-b7abea9630bc8ffc663a751e46680db25c4cdf8d.tar.gz kernel-qcow2-linux-b7abea9630bc8ffc663a751e46680db25c4cdf8d.tar.xz kernel-qcow2-linux-b7abea9630bc8ffc663a751e46680db25c4cdf8d.zip | |
memcg: make page->mapping NULL before uncharge
This patch tries to make page->mapping to be NULL before
mem_cgroup_uncharge_cache_page() is called.
"page->mapping == NULL" is a good check for "whether the page is still
radix-tree or not". This patch also adds BUG_ON() to
mem_cgroup_uncharge_cache_page();
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Reviewed-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Cc: Balbir Singh <balbir@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/memory.c')
0 files changed, 0 insertions, 0 deletions