Commit 5cfb80a7 authored by Daisuke Nishimura's avatar Daisuke Nishimura Committed by Linus Torvalds

memcg: disable move charge in no mmu case

In commit 02491447 ("memcg: move charges of anonymous swap"), I tried to
disable move charge feature in no mmu case by enclosing all the related
functions with "#ifdef CONFIG_MMU", but the commit places these ifdefs in
wrong place.  (it seems that it's mangled while handling some fixes...)

This patch fixes it up.
Signed-off-by: default avatarDaisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Cc: Balbir Singh <balbir@in.ibm.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent ae6be51e
...@@ -3946,28 +3946,6 @@ static int mem_cgroup_do_precharge(unsigned long count) ...@@ -3946,28 +3946,6 @@ static int mem_cgroup_do_precharge(unsigned long count)
} }
return ret; return ret;
} }
#else /* !CONFIG_MMU */
static int mem_cgroup_can_attach(struct cgroup_subsys *ss,
struct cgroup *cgroup,
struct task_struct *p,
bool threadgroup)
{
return 0;
}
static void mem_cgroup_cancel_attach(struct cgroup_subsys *ss,
struct cgroup *cgroup,
struct task_struct *p,
bool threadgroup)
{
}
static void mem_cgroup_move_task(struct cgroup_subsys *ss,
struct cgroup *cont,
struct cgroup *old_cont,
struct task_struct *p,
bool threadgroup)
{
}
#endif
/** /**
* is_target_pte_for_mc - check a pte whether it is valid for move charge * is_target_pte_for_mc - check a pte whether it is valid for move charge
...@@ -4330,6 +4308,28 @@ static void mem_cgroup_move_task(struct cgroup_subsys *ss, ...@@ -4330,6 +4308,28 @@ static void mem_cgroup_move_task(struct cgroup_subsys *ss,
} }
mem_cgroup_clear_mc(); mem_cgroup_clear_mc();
} }
#else /* !CONFIG_MMU */
static int mem_cgroup_can_attach(struct cgroup_subsys *ss,
struct cgroup *cgroup,
struct task_struct *p,
bool threadgroup)
{
return 0;
}
static void mem_cgroup_cancel_attach(struct cgroup_subsys *ss,
struct cgroup *cgroup,
struct task_struct *p,
bool threadgroup)
{
}
static void mem_cgroup_move_task(struct cgroup_subsys *ss,
struct cgroup *cont,
struct cgroup *old_cont,
struct task_struct *p,
bool threadgroup)
{
}
#endif
struct cgroup_subsys mem_cgroup_subsys = { struct cgroup_subsys mem_cgroup_subsys = {
.name = "memory", .name = "memory",
......
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