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-rw-r--r--mm/filemap.c31
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);