diff mbox series

[2/9] mm: make mapping_get_entry available outside of filemap.c

Message ID 20230118094329.9553-3-hch@lst.de (mailing list archive)
State New, archived
Headers show
Series [1/9] mm: don't look at xarray value entries in split_huge_pages_in_file | expand

Commit Message

Christoph Hellwig Jan. 18, 2023, 9:43 a.m. UTC 
mapping_get_entry is useful for page cache API users that need to know
about xa_value internals.  Rename it and make it available in pagemap.h.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 include/linux/pagemap.h | 1 +
 mm/filemap.c            | 6 +++---
 2 files changed, 4 insertions(+), 3 deletions(-)

Comments

Matthew Wilcox Jan. 18, 2023, 1:49 p.m. UTC | #1 
On Wed, Jan 18, 2023 at 10:43:22AM +0100, Christoph Hellwig wrote:
> mapping_get_entry is useful for page cache API users that need to know
> about xa_value internals.  Rename it and make it available in pagemap.h.
> 
> Signed-off-by: Christoph Hellwig <hch@lst.de>

Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
diff mbox series

Patch

diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h
index 9f108168377195..24dedf6b12be49 100644
--- a/include/linux/pagemap.h
+++ b/include/linux/pagemap.h
@@ -507,6 +507,7 @@  pgoff_t page_cache_prev_miss(struct address_space *mapping,
 #define FGP_ENTRY		0x00000080
 #define FGP_STABLE		0x00000100
 
+void *filemap_get_entry(struct address_space *mapping, pgoff_t index);
 struct folio *__filemap_get_folio(struct address_space *mapping, pgoff_t index,
 		int fgp_flags, gfp_t gfp);
 struct page *pagecache_get_page(struct address_space *mapping, pgoff_t index,
diff --git a/mm/filemap.c b/mm/filemap.c
index c915ded191f03f..ed0583f9e27512 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -1834,7 +1834,7 @@  EXPORT_SYMBOL(page_cache_prev_miss);
  */
 
 /*
- * mapping_get_entry - Get a page cache entry.
+ * filemap_get_entry - Get a page cache entry.
  * @mapping: the address_space to search
  * @index: The page cache index.
  *
@@ -1845,7 +1845,7 @@  EXPORT_SYMBOL(page_cache_prev_miss);
  *
  * Return: The folio, swap or shadow entry, %NULL if nothing is found.
  */
-static void *mapping_get_entry(struct address_space *mapping, pgoff_t index)
+void *filemap_get_entry(struct address_space *mapping, pgoff_t index)
 {
 	XA_STATE(xas, &mapping->i_pages, index);
 	struct folio *folio;
@@ -1915,7 +1915,7 @@  struct folio *__filemap_get_folio(struct address_space *mapping, pgoff_t index,
 	struct folio *folio;
 
 repeat:
-	folio = mapping_get_entry(mapping, index);
+	folio = filemap_get_entry(mapping, index);
 	if (xa_is_value(folio)) {
 		if (fgp_flags & FGP_ENTRY)
 			return folio;