NFS: remove nfs_page_lengthg and usage of page_index

This function is no longer used after commit 4fa7a717b432 ("NFS: Fix up
nfs_vm_page_mkwrite() for folios"), all users have been converted to use
folio instead, just delete it to remove usage of page_index.

Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Kairui Song <[email protected]>
Cc: Trond Myklebust <[email protected]>
Cc: Anna Schumaker <[email protected]>
Cc: Barry Song <[email protected]>
Cc: Chao Yu <[email protected]>
Cc: Chris Li <[email protected]>
Cc: David Hildenbrand <[email protected]>
Cc: David Howells <[email protected]>
Cc: "Huang, Ying" <[email protected]>
Cc: Hugh Dickins <[email protected]>
Cc: Ilya Dryomov <[email protected]>
Cc: Jaegeuk Kim <[email protected]>
Cc: Jeff Layton <[email protected]>
Cc: Marc Dionne <[email protected]>
Cc: Matthew Wilcox (Oracle) <[email protected]>
Cc: Minchan Kim <[email protected]>
Cc: NeilBrown <[email protected]>
Cc: Ryan Roberts <[email protected]>
Cc: Ryusuke Konishi <[email protected]>
Cc: Xiubo Li <[email protected]>
Cc: Yosry Ahmed <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>

1 files changed, 0 insertions, 19 deletions

diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index 9f0f4534744b..f3a0930ab4e8 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -800,25 +800,6 @@ static inline void nfs_folio_mark_unstable(struct folio *folio,
 /*
  * Determine the number of bytes of data the page contains
  */
-static inline
-unsigned int nfs_page_length(struct page *page)
-{
-	loff_t i_size = i_size_read(page_file_mapping(page)->host);
-
-	if (i_size > 0) {
-		pgoff_t index = page_index(page);
-		pgoff_t end_index = (i_size - 1) >> PAGE_SHIFT;
-		if (index < end_index)
-			return PAGE_SIZE;
-		if (index == end_index)
-			return ((i_size - 1) & ~PAGE_MASK) + 1;
-	}
-	return 0;
-}
-
-/*
- * Determine the number of bytes of data the page contains
- */
 static inline size_t nfs_folio_length(struct folio *folio)
 {
 	loff_t i_size = i_size_read(folio_file_mapping(folio)->host);