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mm: memcontrol: use "max" instead of "infinity" in control knobs

Browse source 
The memcg control knobs indicate the highest possible value using the
symbolic name "infinity", which is long and awkward to type.

Switch to the string "max", which is just as descriptive but shorter and
sweeter.

This changes a user interface, so do it before the release and before
the development flag is dropped from the default hierarchy.

Signed-off-by: Johannes Weiner <[email protected]>
Cc: Michal Hocko <[email protected]>
Cc: Tejun Heo <[email protected]>
Cc: Vladimir Davydov <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Johannes Weiner 2015-02-27 15:52:04 -08:00 • committed by Linus Torvalds
commit d2973697b3
2 changed files with 8 additions and 8 deletions
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12
mm/memcontrol.c
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@ -5247,7 +5247,7 @@ static int memory_low_show(struct seq_file *m, void *v)
unsigned long low = ACCESS_ONCE(memcg->low);
if (low == PAGE_COUNTER_MAX)
seq_puts(m, "infinity\n");
seq_puts(m, "max\n");
else
seq_printf(m, "%llu\n", (u64)low * PAGE_SIZE);
@ -5262,7 +5262,7 @@ static ssize_t memory_low_write(struct kernfs_open_file *of,
int err;
buf = strstrip(buf);
err = page_counter_memparse(buf, "infinity", &low);
err = page_counter_memparse(buf, "max", &low);
if (err)
return err;
@ -5277,7 +5277,7 @@ static int memory_high_show(struct seq_file *m, void *v)
unsigned long high = ACCESS_ONCE(memcg->high);
if (high == PAGE_COUNTER_MAX)
seq_puts(m, "infinity\n");
seq_puts(m, "max\n");
else
seq_printf(m, "%llu\n", (u64)high * PAGE_SIZE);
@ -5292,7 +5292,7 @@ static ssize_t memory_high_write(struct kernfs_open_file *of,
int err;
buf = strstrip(buf);
err = page_counter_memparse(buf, "infinity", &high);
err = page_counter_memparse(buf, "max", &high);
if (err)
return err;
@ -5307,7 +5307,7 @@ static int memory_max_show(struct seq_file *m, void *v)
unsigned long max = ACCESS_ONCE(memcg->memory.limit);
if (max == PAGE_COUNTER_MAX)
seq_puts(m, "infinity\n");
seq_puts(m, "max\n");
else
seq_printf(m, "%llu\n", (u64)max * PAGE_SIZE);
@ -5322,7 +5322,7 @@ static ssize_t memory_max_write(struct kernfs_open_file *of,
int err;
buf = strstrip(buf);
err = page_counter_memparse(buf, "infinity", &max);
err = page_counter_memparse(buf, "max", &max);
if (err)
return err;