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authorPaul Menage <menage@google.com>2008-04-29 00:59:58 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-04-29 08:06:08 -0700
commit2c3daa722b624eaf0c5ea60e4f180bd0684542e2 (patch)
treeafdb7e2068b018569dda8415b184b6de2ab330a6 /mm/memcontrol.c
parent2c7eabf37647dd459d555e76954b4de87be2321f (diff)
downloadlwn-2c3daa722b624eaf0c5ea60e4f180bd0684542e2.tar.gz
lwn-2c3daa722b624eaf0c5ea60e4f180bd0684542e2.zip
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>
Diffstat (limited to 'mm/memcontrol.c')
-rw-r--r--mm/memcontrol.c15
1 files changed, 6 insertions, 9 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 2e0bfc93484b..e227d7c5989f 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -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",