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CGroup API files: use read_u64 in memory controller 

Update the memory controller to use read_u64 for its limit/usage/failcnt
control files, calling the new res_counter_read_u64() function.

Signed-off-by: Paul Menage <menage@google.com>
Cc: "Li Zefan" <lizf@cn.fujitsu.com>
Cc: Balbir Singh <balbir@in.ibm.com>
Cc: Paul Jackson <pj@sgi.com>
Cc: Pavel Emelyanov <xemul@openvz.org>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: "YAMAMOTO Takashi" <yamamoto@valinux.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Paul Menage 2008-04-29 00:59:58 -07:00 committed by Linus Torvalds
parent 2c7eabf376
commit 2c3daa722b
1 changed files with 6 additions and 9 deletions
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15
mm/memcontrol.c
View File

@ -853,13 +853,10 @@ static int mem_cgroup_write_strategy(char *buf, unsigned long long *tmp)
return 0;
}
static ssize_t mem_cgroup_read(struct cgroup *cont,
struct cftype *cft, struct file *file,
char __user *userbuf, size_t nbytes, loff_t *ppos)
static u64 mem_cgroup_read(struct cgroup *cont, struct cftype *cft)
{
return res_counter_read(&mem_cgroup_from_cont(cont)->res,
cft->private, userbuf, nbytes, ppos,
NULL);
return res_counter_read_u64(&mem_cgroup_from_cont(cont)->res,
cft->private);
}
static ssize_t mem_cgroup_write(struct cgroup *cont, struct cftype *cft,
@ -950,18 +947,18 @@ static struct cftype mem_cgroup_files[] = {
{
.name = "usage_in_bytes",
.private = RES_USAGE,
.read = mem_cgroup_read,
.read_u64 = mem_cgroup_read,
},
{
.name = "limit_in_bytes",
.private = RES_LIMIT,
.write = mem_cgroup_write,
.read = mem_cgroup_read,
.read_u64 = mem_cgroup_read,
},
{
.name = "failcnt",
.private = RES_FAILCNT,
.read = mem_cgroup_read,
.read_u64 = mem_cgroup_read,
},
{
.name = "force_empty",