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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 /fs/ntfs/malloc.h | |
| parent | mm: convert zone->managed_pages to atomic variable (diff) | |
| download | linux-dev-ca79b0c211af63fa3276f0e3fd7dd9ada2439839.tar.xz linux-dev-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/ntfs/malloc.h')
| -rw-r--r-- | fs/ntfs/malloc.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/ntfs/malloc.h b/fs/ntfs/malloc.h index ab172e5f51d9..5becc8acc8f4 100644 --- a/fs/ntfs/malloc.h +++ b/fs/ntfs/malloc.h @@ -47,7 +47,7 @@ static inline void *__ntfs_malloc(unsigned long size, gfp_t gfp_mask) return kmalloc(PAGE_SIZE, gfp_mask & ~__GFP_HIGHMEM); /* return (void *)__get_free_page(gfp_mask); */ } - if (likely((size >> PAGE_SHIFT) < totalram_pages)) + if (likely((size >> PAGE_SHIFT) < totalram_pages())) return __vmalloc(size, gfp_mask, PAGE_KERNEL); return NULL; } |