diff options
Diffstat (limited to 'mm/filemap.c')
| -rw-r--r-- | mm/filemap.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/mm/filemap.c b/mm/filemap.c index 01690338e3d2..beba6bd6b511 100644 --- a/mm/filemap.c +++ b/mm/filemap.c | |||
| @@ -713,8 +713,12 @@ int add_to_page_cache_lru(struct page *page, struct address_space *mapping, | |||
| 713 | * The page might have been evicted from cache only | 713 | * The page might have been evicted from cache only |
| 714 | * recently, in which case it should be activated like | 714 | * recently, in which case it should be activated like |
| 715 | * any other repeatedly accessed page. | 715 | * any other repeatedly accessed page. |
| 716 | * The exception is pages getting rewritten; evicting other | ||
| 717 | * data from the working set, only to cache data that will | ||
| 718 | * get overwritten with something else, is a waste of memory. | ||
| 716 | */ | 719 | */ |
| 717 | if (shadow && workingset_refault(shadow)) { | 720 | if (!(gfp_mask & __GFP_WRITE) && |
| 721 | shadow && workingset_refault(shadow)) { | ||
| 718 | SetPageActive(page); | 722 | SetPageActive(page); |
| 719 | workingset_activation(page); | 723 | workingset_activation(page); |
| 720 | } else | 724 | } else |