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| author | Arun KS <arunks@codeaurora.org> | 2018-12-28 00:34:29 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-12-28 12:11:47 -0800 |
| commit | ca79b0c211af63fa3276f0e3fd7dd9ada2439839 (patch) | |
| tree | a9198e85582744619903c85349583bb453fe36cb /mm/kasan | |
| parent | 9705bea5f833f4fc21d5bef5fce7348427f76ea4 (diff) | |
| download | linux-ca79b0c211af63fa3276f0e3fd7dd9ada2439839.tar.gz | |
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 <arunks@codeaurora.org> Suggested-by: Michal Hocko <mhocko@suse.com> Suggested-by: Vlastimil Babka <vbabka@suse.cz> Reviewed-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru> Reviewed-by: Pavel Tatashin <pasha.tatashin@soleen.com> Acked-by: Michal Hocko <mhocko@suse.com> Acked-by: Vlastimil Babka <vbabka@suse.cz> Cc: David Hildenbrand <david@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/kasan')
| -rw-r--r-- | mm/kasan/quarantine.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/kasan/quarantine.c b/mm/kasan/quarantine.c index 57334ef2d7ef..978bc4a3eb51 100644 --- a/mm/kasan/quarantine.c +++ b/mm/kasan/quarantine.c @@ -237,7 +237,7 @@ void quarantine_reduce(void) * Update quarantine size in case of hotplug. Allocate a fraction of * the installed memory to quarantine minus per-cpu queue limits. */ - total_size = (READ_ONCE(totalram_pages) << PAGE_SHIFT) / + total_size = (totalram_pages() << PAGE_SHIFT) / QUARANTINE_FRACTION; percpu_quarantines = QUARANTINE_PERCPU_SIZE * num_online_cpus(); new_quarantine_size = (total_size < percpu_quarantines) ? |