diff options
| -rw-r--r-- | mm/filemap.c | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/mm/filemap.c b/mm/filemap.c index 6bf5e42d560a..519af0045b1c 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -196,7 +196,9 @@ void __delete_from_page_cache(struct page *page, void *shadow) page->mapping = NULL; /* Leave page->index set: truncation lookup relies upon it */ - __dec_zone_page_state(page, NR_FILE_PAGES); + /* hugetlb pages do not participate in page cache accounting. */ + if (!PageHuge(page)) + __dec_zone_page_state(page, NR_FILE_PAGES); if (PageSwapBacked(page)) __dec_zone_page_state(page, NR_SHMEM); BUG_ON(page_mapped(page)); @@ -483,7 +485,12 @@ int replace_page_cache_page(struct page *old, struct page *new, gfp_t gfp_mask) error = radix_tree_insert(&mapping->page_tree, offset, new); BUG_ON(error); mapping->nrpages++; - __inc_zone_page_state(new, NR_FILE_PAGES); + + /* + * hugetlb pages do not participate in page cache accounting. + */ + if (!PageHuge(new)) + __inc_zone_page_state(new, NR_FILE_PAGES); if (PageSwapBacked(new)) __inc_zone_page_state(new, NR_SHMEM); spin_unlock_irq(&mapping->tree_lock); @@ -575,7 +582,10 @@ static int __add_to_page_cache_locked(struct page *page, radix_tree_preload_end(); if (unlikely(error)) goto err_insert; - __inc_zone_page_state(page, NR_FILE_PAGES); + + /* hugetlb pages do not participate in page cache accounting. */ + if (!huge) + __inc_zone_page_state(page, NR_FILE_PAGES); spin_unlock_irq(&mapping->tree_lock); if (!huge) mem_cgroup_commit_charge(page, memcg, false); |