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authorHuang Ying <ying.huang@intel.com>2020-04-07 06:04:41 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2020-04-07 20:43:38 +0300
commit9de4f22a60f731943f050f4448bf2933ed3fa70b (patch)
treea748811bb7451c957caf32df4cbd67fa28e1013b /mm/mprotect.c
parent7a9547fd4ebc5df52245e1df8a2e0bb481f20a92 (diff)
downloadlinux-9de4f22a60f731943f050f4448bf2933ed3fa70b.tar.xz
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/mprotect.c')
-rw-r--r--mm/mprotect.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/mprotect.c b/mm/mprotect.c
index 311c0dadf71c..0fee14b39416 100644
--- a/mm/mprotect.c
+++ b/mm/mprotect.c
@@ -98,7 +98,7 @@ static unsigned long change_pte_range(struct vm_area_struct *vma, pmd_t *pmd,
* it cannot move them all from MIGRATE_ASYNC
* context.
*/
- if (page_is_file_cache(page) && PageDirty(page))
+ if (page_is_file_lru(page) && PageDirty(page))
continue;
/*