This function isn't needed - a NULL pointer in the cftype read
function will result in the same EINVAL response to userspace.

Signed-off-by: Paul Menage <menage@google.com>

---
 mm/memcontrol.c |   14 --------------
 1 file changed, 14 deletions(-)

Index: cgroup-2.6.25-rc2-mm1/mm/memcontrol.c
===================================================================
--- cgroup-2.6.25-rc2-mm1.orig/mm/memcontrol.c
+++ cgroup-2.6.25-rc2-mm1/mm/memcontrol.c
@@ -950,19 +950,6 @@ static ssize_t mem_force_empty_write(str
 	return ret;
 }
 
-/*
- * Note: This should be removed if cgroup supports write-only file.
- */
-
-static ssize_t mem_force_empty_read(struct cgroup *cont,
-				struct cftype *cft,
-				struct file *file, char __user *userbuf,
-				size_t nbytes, loff_t *ppos)
-{
-	return -EINVAL;
-}
-
-
 static const struct mem_cgroup_stat_desc {
 	const char *msg;
 	u64 unit;
@@ -1019,7 +1006,6 @@ static struct cftype mem_cgroup_files[] 
 	{
 		.name = "force_empty",
 		.write = mem_force_empty_write,
-		.read = mem_force_empty_read,
 	},
 	{
 		.name = "stat",

--
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