From: "Matthew Wilcox (Oracle)" <willy@xxxxxxxxxxxxx>
The only remaining caller is add_to_page_cache(), and the only
caller of that is hugetlbfs, so move add_to_page_cache() into
filemap.c and call __add_to_page_cache_locked() directly.
Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
---
include/linux/pagemap.h | 20 ++------------------
mm/filemap.c | 23 ++++++++---------------
2 files changed, 10 insertions(+), 33 deletions(-)
diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h
index 37a4d9e32cd3..3ce051fb9c73 100644
--- a/include/linux/pagemap.h
+++ b/include/linux/pagemap.h
@@ -604,8 +604,8 @@ static inline int fault_in_pages_readable(const char __user *uaddr, int size)
return 0;
}
-int add_to_page_cache_locked(struct page *page, struct address_space *mapping,
- pgoff_t index, gfp_t gfp_mask);
+int add_to_page_cache(struct page *page, struct address_space *mapping,
+ pgoff_t index, gfp_t gfp);
int add_to_page_cache_lru(struct page *page, struct address_space *mapping,
pgoff_t index, gfp_t gfp_mask);
extern void delete_from_page_cache(struct page *page);
@@ -614,22 +614,6 @@ int replace_page_cache_page(struct page *old, struct page *new, gfp_t gfp_mask);
void delete_from_page_cache_batch(struct address_space *mapping,
struct pagevec *pvec);
-/*
- * Like add_to_page_cache_locked, but used to add newly allocated pages:
- * the page is new, so we can just run __SetPageLocked() against it.
- */
-static inline int add_to_page_cache(struct page *page,
- struct address_space *mapping, pgoff_t offset, gfp_t gfp_mask)
-{
- int error;
-
- __SetPageLocked(page);
- error = add_to_page_cache_locked(page, mapping, offset, gfp_mask);
- if (unlikely(error))
- __ClearPageLocked(page);
- return error;
-}
-
static inline unsigned long dir_pages(struct inode *inode)
{
return (unsigned long)(inode->i_size + PAGE_SIZE - 1) >>
diff --git a/mm/filemap.c b/mm/filemap.c
index bf6aa30be58d..fb87f5fa75e6 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -913,25 +913,18 @@ static int __add_to_page_cache_locked(struct page *page,
}
ALLOW_ERROR_INJECTION(__add_to_page_cache_locked, ERRNO);
-/**
- * add_to_page_cache_locked - add a locked page to the pagecache
- * @page: page to add
- * @mapping: the page's address_space
- * @offset: page index
- * @gfp_mask: page allocation mode
- *
- * This function is used to add a page to the pagecache. It must be locked.
- * This function does not add the page to the LRU. The caller must do that.
- *
- * Return: %0 on success, negative error code otherwise.
- */
-int add_to_page_cache_locked(struct page *page, struct address_space *mapping,
+int add_to_page_cache(struct page *page, struct address_space *mapping,
pgoff_t offset, gfp_t gfp_mask)
{
- return __add_to_page_cache_locked(page, mapping, offset,
+ int err;
+
+ __SetPageLocked(page);
+ err = __add_to_page_cache_locked(page, mapping, offset,
gfp_mask, NULL);
+ if (unlikely(err))
+ __ClearPageLocked(page);
+ return err;
}
-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)
--
2.24.1
