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| author | Huang Ying <ying.huang@intel.com> | 2020-04-06 20:04:41 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-04-07 10:43:38 -0700 |
| commit | 9de4f22a60f731943f050f4448bf2933ed3fa70b (patch) | |
| tree | a748811bb7451c957caf32df4cbd67fa28e1013b /mm/khugepaged.c | |
| parent | 7a9547fd4ebc5df52245e1df8a2e0bb481f20a92 (diff) | |
| download | linux-9de4f22a60f731943f050f4448bf2933ed3fa70b.tar.gz linux-9de4f22a60f731943f050f4448bf2933ed3fa70b.tar.bz2 linux-9de4f22a60f731943f050f4448bf2933ed3fa70b.zip | |
mm: code cleanup for MADV_FREE
Some comments for MADV_FREE is revised and added to help people understand
the MADV_FREE code, especially the page flag, PG_swapbacked. This makes
page_is_file_cache() isn't consistent with its comments. So the function
is renamed to page_is_file_lru() to make them consistent again. All these
are put in one patch as one logical change.
Suggested-by: David Hildenbrand <david@redhat.com>
Suggested-by: Johannes Weiner <hannes@cmpxchg.org>
Suggested-by: David Rientjes <rientjes@google.com>
Signed-off-by: "Huang, Ying" <ying.huang@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: David Rientjes <rientjes@google.com>
Acked-by: Michal Hocko <mhocko@kernel.org>
Acked-by: Pankaj Gupta <pankaj.gupta.linux@gmail.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Hugh Dickins <hughd@google.com>
Cc: Rik van Riel <riel@surriel.com>
Link: http://lkml.kernel.org/r/20200317100342.2730705-1-ying.huang@intel.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/khugepaged.c')
| -rw-r--r-- | mm/khugepaged.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/mm/khugepaged.c b/mm/khugepaged.c index b1d9a8e189b8..3afc1e2d7a55 100644 --- a/mm/khugepaged.c +++ b/mm/khugepaged.c @@ -511,7 +511,7 @@ void __khugepaged_exit(struct mm_struct *mm) static void release_pte_page(struct page *page) { - dec_node_page_state(page, NR_ISOLATED_ANON + page_is_file_cache(page)); + dec_node_page_state(page, NR_ISOLATED_ANON + page_is_file_lru(page)); unlock_page(page); putback_lru_page(page); } @@ -611,7 +611,7 @@ static int __collapse_huge_page_isolate(struct vm_area_struct *vma, goto out; } inc_node_page_state(page, - NR_ISOLATED_ANON + page_is_file_cache(page)); + NR_ISOLATED_ANON + page_is_file_lru(page)); VM_BUG_ON_PAGE(!PageLocked(page), page); VM_BUG_ON_PAGE(PageLRU(page), page); |