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| author | Arun KS <arunks@codeaurora.org> | 2018-12-28 09:34:29 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-12-28 21:11:47 +0100 |
| commit | ca79b0c211af63fa3276f0e3fd7dd9ada2439839 (patch) | |
| tree | a9198e85582744619903c85349583bb453fe36cb /fs/nfsd | |
| parent | mm: convert zone->managed_pages to atomic variable (diff) | |
| download | linux-ca79b0c211af63fa3276f0e3fd7dd9ada2439839.tar.xz linux-ca79b0c211af63fa3276f0e3fd7dd9ada2439839.zip | |
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 'fs/nfsd')
| -rw-r--r-- | fs/nfsd/nfscache.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/nfsd/nfscache.c b/fs/nfsd/nfscache.c index e2fe0e9ce0df..da52b594362a 100644 --- a/fs/nfsd/nfscache.c +++ b/fs/nfsd/nfscache.c @@ -99,7 +99,7 @@ static unsigned int nfsd_cache_size_limit(void) { unsigned int limit; - unsigned long low_pages = totalram_pages - totalhigh_pages; + unsigned long low_pages = totalram_pages() - totalhigh_pages(); limit = (16 * int_sqrt(low_pages)) << (PAGE_SHIFT-10); return min_t(unsigned int, limit, 256*1024); |