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| author | Wei Yang <richard.weiyang@gmail.com> | 2024-06-19 03:06:12 +0200 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2024-07-04 04:30:19 +0200 |
| commit | 08af2c12e3ef379de94ba5653f2f9ae9a588ecd9 (patch) | |
| tree | cb721960beeb21e9e4366dad3de30d3d5faad7aa /mm/page_alloc.c | |
| parent | mm/page_alloc: fix a typo in comment about GFP flag (diff) | |
| download | linux-08af2c12e3ef379de94ba5653f2f9ae9a588ecd9.tar.xz linux-08af2c12e3ef379de94ba5653f2f9ae9a588ecd9.zip | |
mm/page_alloc: reword the comment of buddy_merge_likely()
For page with order O, we are checking its order (O + 1)'s buddy. If it
is free, we would like to put it to the tail and expect it would be merged
to a page with order (O + 2).
Reword the comment to reflect it.
Link: https://lkml.kernel.org/r/20240619010612.20740-4-richard.weiyang@gmail.com
Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
Cc: Mike Rapoport (IBM) <rppt@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/page_alloc.c')
| -rw-r--r-- | mm/page_alloc.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 299d09accf1f..8a0fd4137684 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -712,12 +712,12 @@ static inline struct page *get_page_from_free_area(struct free_area *area, } /* - * If this is not the largest possible page, check if the buddy - * of the next-highest order is free. If it is, it's possible + * If this is less than the 2nd largest possible page, check if the buddy + * of the next-higher order is free. If it is, it's possible * that pages are being freed that will coalesce soon. In case, * that is happening, add the free page to the tail of the list * so it's less likely to be used soon and more likely to be merged - * as a higher order page + * as a 2-level higher order page */ static inline bool buddy_merge_likely(unsigned long pfn, unsigned long buddy_pfn, |