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mm: page_counter: pull "-1" handling out of page_counter_memparse()

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The unified hierarchy interface for memory cgroups will no longer use "-1"
to mean maximum possible resource value.  In preparation for this, make
the string an argument and let the caller supply it.

Signed-off-by: Johannes Weiner <[email protected]>
Acked-by: Michal Hocko <[email protected]>
Cc: Vladimir Davydov <[email protected]>
Cc: Greg Thelen <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Johannes Weiner 2015-02-11 15:26:03 -08:00 • committed by Linus Torvalds
commit 650c5e5654
5 changed files with 10 additions and 8 deletions
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2
net/ipv4/tcp_memcontrol.c
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@ -120,7 +120,7 @@ static ssize_t tcp_cgroup_write(struct kernfs_open_file *of,
switch (of_cft(of)->private) {
case RES_LIMIT:
/* see memcontrol.c */
ret = page_counter_memparse(buf, &nr_pages);
ret = page_counter_memparse(buf, "-1", &nr_pages);
if (ret)
break;
mutex_lock(&tcp_limit_mutex);