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| author | KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> | 2008-02-07 00:14:16 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2008-02-07 08:42:20 -0800 |
| commit | cc8475822f8a4b17e9b76e7fadb6b9a341860422 (patch) | |
| tree | b7e3ee9aba56ffaf93130786f3439cc43339e586 /fs/drop_caches.c | |
| parent | 417eead30434b4bd09a54455e839cf9a62c05460 (diff) | |
memory cgroup enhancements: force_empty interface for dropping all account in empty cgroup
This patch adds an interface "memory.force_empty". Any write to this file
will drop all charges in this cgroup if there is no task under.
%echo 1 > /....../memory.force_empty
will drop all charges of memory cgroup if cgroup's tasks is empty.
This is useful to invoke rmdir() against memory cgroup successfully.
Tested and worked well on x86_64/fake-NUMA system.
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Balbir Singh <balbir@linux.vnet.ibm.com>
Cc: Pavel Emelianov <xemul@openvz.org>
Cc: Paul Menage <menage@google.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Kirill Korotaev <dev@sw.ru>
Cc: Herbert Poetzl <herbert@13thfloor.at>
Cc: David Rientjes <rientjes@google.com>
Cc: Vaidyanathan Srinivasan <svaidy@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 'fs/drop_caches.c')
0 files changed, 0 insertions, 0 deletions