diff options
Diffstat (limited to 'mm/filemap.c')
| -rw-r--r-- | mm/filemap.c | 22 |
1 files changed, 19 insertions, 3 deletions
diff --git a/mm/filemap.c b/mm/filemap.c index 903bf316912..a1ddd2557af 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -33,6 +33,7 @@ #include <linux/cpuset.h> #include <linux/hardirq.h> /* for BUG_ON(!in_atomic()) only */ #include <linux/memcontrol.h> +#include <linux/mm_inline.h> /* for page_is_file_cache() */ #include "internal.h" /* @@ -492,9 +493,24 @@ EXPORT_SYMBOL(add_to_page_cache_locked); int add_to_page_cache_lru(struct page *page, struct address_space *mapping, pgoff_t offset, gfp_t gfp_mask) { - int ret = add_to_page_cache(page, mapping, offset, gfp_mask); - if (ret == 0) - lru_cache_add(page); + int ret; + + /* + * Splice_read and readahead add shmem/tmpfs pages into the page cache + * before shmem_readpage has a chance to mark them as SwapBacked: they + * need to go on the active_anon lru below, and mem_cgroup_cache_charge + * (called in add_to_page_cache) needs to know where they're going too. + */ + if (mapping_cap_swap_backed(mapping)) + SetPageSwapBacked(page); + + ret = add_to_page_cache(page, mapping, offset, gfp_mask); + if (ret == 0) { + if (page_is_file_cache(page)) + lru_cache_add_file(page); + else + lru_cache_add_active_anon(page); + } return ret; } |