From 6071ca5201066f4b2a61cfb693dd186d6bc6e9f3 Mon Sep 17 00:00:00 2001 From: Johannes Weiner Date: Thu, 5 Nov 2015 18:50:26 -0800 Subject: mm: page_counter: let page_counter_try_charge() return bool page_counter_try_charge() currently returns 0 on success and -ENOMEM on failure, which is surprising behavior given the function name. Make it follow the expected pattern of try_stuff() functions that return a boolean true to indicate success, or false for failure. Signed-off-by: Johannes Weiner Acked-by: Michal Hocko Cc: Vladimir Davydov Signed-off-by: Linus Torvalds --- mm/page_counter.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) (limited to 'mm/page_counter.c') diff --git a/mm/page_counter.c b/mm/page_counter.c index 11b4beda14ba..7c6a63d2c27f 100644 --- a/mm/page_counter.c +++ b/mm/page_counter.c @@ -56,12 +56,12 @@ void page_counter_charge(struct page_counter *counter, unsigned long nr_pages) * @nr_pages: number of pages to charge * @fail: points first counter to hit its limit, if any * - * Returns 0 on success, or -ENOMEM and @fail if the counter or one of - * its ancestors has hit its configured limit. + * Returns %true on success, or %false and @fail if the counter or one + * of its ancestors has hit its configured limit. */ -int page_counter_try_charge(struct page_counter *counter, - unsigned long nr_pages, - struct page_counter **fail) +bool page_counter_try_charge(struct page_counter *counter, + unsigned long nr_pages, + struct page_counter **fail) { struct page_counter *c; @@ -99,13 +99,13 @@ int page_counter_try_charge(struct page_counter *counter, if (new > c->watermark) c->watermark = new; } - return 0; + return true; failed: for (c = counter; c != *fail; c = c->parent) page_counter_cancel(c, nr_pages); - return -ENOMEM; + return false; } /** -- cgit