From ca79b0c211af63fa3276f0e3fd7dd9ada2439839 Mon Sep 17 00:00:00 2001 From: Arun KS Date: Fri, 28 Dec 2018 00:34:29 -0800 Subject: mm: convert totalram_pages and totalhigh_pages variables to atomic totalram_pages and totalhigh_pages are made static inline function. Main motivation was that managed_page_count_lock handling was complicating things. It was discussed in length here, https://lore.kernel.org/patchwork/patch/995739/#1181785 So it seemes better to remove the lock and convert variables to atomic, with preventing poteintial store-to-read tearing as a bonus. [akpm@linux-foundation.org: coding style fixes] Link: http://lkml.kernel.org/r/1542090790-21750-4-git-send-email-arunks@codeaurora.org Signed-off-by: Arun KS Suggested-by: Michal Hocko Suggested-by: Vlastimil Babka Reviewed-by: Konstantin Khlebnikov Reviewed-by: Pavel Tatashin Acked-by: Michal Hocko Acked-by: Vlastimil Babka Cc: David Hildenbrand Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/char/agp/backend.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/char') diff --git a/drivers/char/agp/backend.c b/drivers/char/agp/backend.c index 38ffb281df97..004a3ce8ba72 100644 --- a/drivers/char/agp/backend.c +++ b/drivers/char/agp/backend.c @@ -115,9 +115,9 @@ static int agp_find_max(void) long memory, index, result; #if PAGE_SHIFT < 20 - memory = totalram_pages >> (20 - PAGE_SHIFT); + memory = totalram_pages() >> (20 - PAGE_SHIFT); #else - memory = totalram_pages << (PAGE_SHIFT - 20); + memory = totalram_pages() << (PAGE_SHIFT - 20); #endif index = 1; -- cgit v1.2.3