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| author | Joonsoo Kim <iamjoonsoo.kim@lge.com> | 2016-07-27 01:23:49 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-07-27 02:19:19 +0300 |
| commit | a9627bc5e34e79ae80a33241b8a1501cc498e191 (patch) | |
| tree | f3ecdabcbbbcbcc5b53c1aef2a24d3feab3be0d4 /include | |
| parent | a8efe1c982a22c95884dee1ddf2e721567d1f483 (diff) | |
| download | linux-a9627bc5e34e79ae80a33241b8a1501cc498e191.tar.xz | |
mm/page_owner: introduce split_page_owner and replace manual handling
split_page() calls set_page_owner() to set up page_owner to each pages.
But, it has a drawback that head page and the others have different
stacktrace because callsite of set_page_owner() is slightly differnt.
To avoid this problem, this patch copies head page's page_owner to the
others. It needs to introduce new function, split_page_owner() but it
also remove the other function, get_page_owner_gfp() so looks good to
do.
Link: http://lkml.kernel.org/r/1464230275-25791-4-git-send-email-iamjoonsoo.kim@lge.com
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Alexander Potapenko <glider@google.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Michal Hocko <mhocko@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/page_owner.h | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/include/linux/page_owner.h b/include/linux/page_owner.h index 46f1b939948c..30583ab0ffb1 100644 --- a/include/linux/page_owner.h +++ b/include/linux/page_owner.h @@ -10,7 +10,7 @@ extern struct page_ext_operations page_owner_ops; extern void __reset_page_owner(struct page *page, unsigned int order); extern void __set_page_owner(struct page *page, unsigned int order, gfp_t gfp_mask); -extern gfp_t __get_page_owner_gfp(struct page *page); +extern void __split_page_owner(struct page *page, unsigned int order); extern void __copy_page_owner(struct page *oldpage, struct page *newpage); extern void __set_page_owner_migrate_reason(struct page *page, int reason); extern void __dump_page_owner(struct page *page); @@ -28,12 +28,10 @@ static inline void set_page_owner(struct page *page, __set_page_owner(page, order, gfp_mask); } -static inline gfp_t get_page_owner_gfp(struct page *page) +static inline void split_page_owner(struct page *page, unsigned int order) { if (static_branch_unlikely(&page_owner_inited)) - return __get_page_owner_gfp(page); - else - return 0; + __split_page_owner(page, order); } static inline void copy_page_owner(struct page *oldpage, struct page *newpage) { @@ -58,9 +56,9 @@ static inline void set_page_owner(struct page *page, unsigned int order, gfp_t gfp_mask) { } -static inline gfp_t get_page_owner_gfp(struct page *page) +static inline void split_page_owner(struct page *page, + unsigned int order) { - return 0; } static inline void copy_page_owner(struct page *oldpage, struct page *newpage) { |