nfs: Use a folio in nfs_get_link()

Mirror the changes to __page_get_link() by retrieving a folio from
the page cache instead of a page.  Removes two hidden calls to
compound_head().

Signed-off-by: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Link: https://lore.kernel.org/20250514171316.3002934-3-willy@infradead.org
Signed-off-by: Christian Brauner <brauner@kernel.org>

diff --git a/fs/nfs/symlink.c b/fs/nfs/symlink.c
index 1c62a5a9f51d40b79551a8ad6a42d3bbb85e3e9e..004a8f6c568e32cad7057fd503aa0f390c3d2ff7 100644 (file)
--- a/fs/nfs/symlink.c
+++ b/fs/nfs/symlink.c
@@ -40,31 +40,31 @@ static const char *nfs_get_link(struct dentry *dentry,
                                struct inode *inode,
                                struct delayed_call *done)
 {
-       struct page *page;
+       struct folio *folio;
        void *err;
 
        if (!dentry) {
                err = ERR_PTR(nfs_revalidate_mapping_rcu(inode));
                if (err)
                        return err;
-               page = find_get_page(inode->i_mapping, 0);
-               if (!page)
+               folio = filemap_get_folio(inode->i_mapping, 0);
+               if (IS_ERR(folio))
                        return ERR_PTR(-ECHILD);
-               if (!PageUptodate(page)) {
-                       put_page(page);
+               if (!folio_test_uptodate(folio)) {
+                       folio_put(folio);
                        return ERR_PTR(-ECHILD);
                }
        } else {
                err = ERR_PTR(nfs_revalidate_mapping(inode, inode->i_mapping));
                if (err)
                        return err;
-               page = read_cache_page(&inode->i_data, 0, nfs_symlink_filler,
+               folio = read_cache_folio(&inode->i_data, 0, nfs_symlink_filler,
                                NULL);
-               if (IS_ERR(page))
-                       return ERR_CAST(page);
+               if (IS_ERR(folio))
+                       return ERR_CAST(folio);
        }
-       set_delayed_call(done, page_put_link, page);
-       return page_address(page);
+       set_delayed_call(done, page_put_link, &folio->page);
+       return folio_address(folio);
 }
 
 /*