diff options
Diffstat (limited to 'mm/filemap.c')
| -rw-r--r-- | mm/filemap.c | 31 |
1 files changed, 18 insertions, 13 deletions
diff --git a/mm/filemap.c b/mm/filemap.c index 6eb4e32d99c8..ecf7565ff435 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -254,6 +254,23 @@ void __delete_from_page_cache(struct page *page, void *shadow) account_page_cleaned(page, mapping, inode_to_wb(mapping->host)); } +static void page_cache_free_page(struct address_space *mapping, + struct page *page) +{ + void (*freepage)(struct page *); + + freepage = mapping->a_ops->freepage; + if (freepage) + freepage(page); + + if (PageTransHuge(page) && !PageHuge(page)) { + page_ref_sub(page, HPAGE_PMD_NR); + VM_BUG_ON_PAGE(page_count(page) <= 0, page); + } else { + put_page(page); + } +} + /** * delete_from_page_cache - delete page from page cache * @page: the page which the kernel is trying to remove from page cache @@ -266,25 +283,13 @@ void delete_from_page_cache(struct page *page) { struct address_space *mapping = page_mapping(page); unsigned long flags; - void (*freepage)(struct page *); BUG_ON(!PageLocked(page)); - - freepage = mapping->a_ops->freepage; - spin_lock_irqsave(&mapping->tree_lock, flags); __delete_from_page_cache(page, NULL); spin_unlock_irqrestore(&mapping->tree_lock, flags); - if (freepage) - freepage(page); - - if (PageTransHuge(page) && !PageHuge(page)) { - page_ref_sub(page, HPAGE_PMD_NR); - VM_BUG_ON_PAGE(page_count(page) <= 0, page); - } else { - put_page(page); - } + page_cache_free_page(mapping, page); } EXPORT_SYMBOL(delete_from_page_cache); |