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, * The page might have been evicted from cache only * recently, in which case it should be activated like * any other repeatedly accessed page. + * The exception is pages getting rewritten; evicting other + * data from the working set, only to cache data that will + * get overwritten with something else, is a waste of memory. */ - if (shadow && workingset_refault(shadow)) { + if (!(gfp_mask & __GFP_WRITE) && + shadow && workingset_refault(shadow)) { SetPageActive(page); workingset_activation(page); } else |