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| author | Michal Hocko <mhocko@suse.com> | 2017-09-07 02:23:36 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-09-07 03:27:29 +0300 |
| commit | c41f012ade0b95b0a6e25c7150673e0554736165 (patch) | |
| tree | c3270264283dff1de402a6609b155c804c097320 /mm/mmap.c | |
| parent | 4da243ac1cf6aeb30b7c555d56208982d66d6d33 (diff) | |
| download | linux-c41f012ade0b95b0a6e25c7150673e0554736165.tar.xz | |
mm: rename global_page_state to global_zone_page_state
global_page_state is error prone as a recent bug report pointed out [1].
It only returns proper values for zone based counters as the enum it
gets suggests. We already have global_node_page_state so let's rename
global_page_state to global_zone_page_state to be more explicit here.
All existing users seems to be correct:
$ git grep "global_page_state(NR_" | sed 's@.*(\(NR_[A-Z_]*\)).*@\1@' | sort | uniq -c
2 NR_BOUNCE
2 NR_FREE_CMA_PAGES
11 NR_FREE_PAGES
1 NR_KERNEL_STACK_KB
1 NR_MLOCK
2 NR_PAGETABLE
This patch shouldn't introduce any functional change.
[1] http://lkml.kernel.org/r/201707260628.v6Q6SmaS030814@www262.sakura.ne.jp
Link: http://lkml.kernel.org/r/20170801134256.5400-2-hannes@cmpxchg.org
Signed-off-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
Cc: Josef Bacik <josef@toxicpanda.com>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/mmap.c')
| -rw-r--r-- | mm/mmap.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/mm/mmap.c b/mm/mmap.c index f19efcf75418..9800e29763f4 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -3514,7 +3514,7 @@ static int init_user_reserve(void) { unsigned long free_kbytes; - free_kbytes = global_page_state(NR_FREE_PAGES) << (PAGE_SHIFT - 10); + free_kbytes = global_zone_page_state(NR_FREE_PAGES) << (PAGE_SHIFT - 10); sysctl_user_reserve_kbytes = min(free_kbytes / 32, 1UL << 17); return 0; @@ -3535,7 +3535,7 @@ static int init_admin_reserve(void) { unsigned long free_kbytes; - free_kbytes = global_page_state(NR_FREE_PAGES) << (PAGE_SHIFT - 10); + free_kbytes = global_zone_page_state(NR_FREE_PAGES) << (PAGE_SHIFT - 10); sysctl_admin_reserve_kbytes = min(free_kbytes / 32, 1UL << 13); return 0; @@ -3579,7 +3579,7 @@ static int reserve_mem_notifier(struct notifier_block *nb, break; case MEM_OFFLINE: - free_kbytes = global_page_state(NR_FREE_PAGES) << (PAGE_SHIFT - 10); + free_kbytes = global_zone_page_state(NR_FREE_PAGES) << (PAGE_SHIFT - 10); if (sysctl_user_reserve_kbytes > free_kbytes) { init_user_reserve(); |