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res_counter: delete res_counter_write()
Since commit 628f423553
("memcg: limit change shrink usage") both
res_counter_write() and write_strategy_fn have been unused. This patch
deletes them both.
Signed-off-by: Greg Thelen <gthelen@google.com>
Cc: Glauber Costa <glommer@parallels.com>
Cc: Tejun Heo <tj@kernel.org>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Frederic Weisbecker <fweisbec@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
parent
6715ddf945
commit
44e33e8f95
@ -74,14 +74,9 @@ ssize_t res_counter_read(struct res_counter *counter, int member,
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const char __user *buf, size_t nbytes, loff_t *pos,
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int (*read_strategy)(unsigned long long val, char *s));
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typedef int (*write_strategy_fn)(const char *buf, unsigned long long *val);
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int res_counter_memparse_write_strategy(const char *buf,
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unsigned long long *res);
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int res_counter_write(struct res_counter *counter, int member,
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const char *buffer, write_strategy_fn write_strategy);
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/*
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* the field descriptors. one for each member of res_counter
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*/
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@ -192,25 +192,3 @@ int res_counter_memparse_write_strategy(const char *buf,
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*res = PAGE_ALIGN(*res);
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return 0;
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}
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int res_counter_write(struct res_counter *counter, int member,
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const char *buf, write_strategy_fn write_strategy)
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{
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char *end;
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unsigned long flags;
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unsigned long long tmp, *val;
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if (write_strategy) {
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if (write_strategy(buf, &tmp))
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return -EINVAL;
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} else {
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tmp = simple_strtoull(buf, &end, 10);
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if (*end != '\0')
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return -EINVAL;
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}
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spin_lock_irqsave(&counter->lock, flags);
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val = res_counter_member(counter, member);
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*val = tmp;
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spin_unlock_irqrestore(&counter->lock, flags);
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return 0;
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}
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