22 static int afs_symlink_read_folio(struct file *file, struct folio *folio);
23 static void afs_invalidate_folio(struct folio *folio, size_t offset,
25 static bool afs_release_folio(struct folio *folio, gfp_t gfp_flags);
335 static int afs_symlink_read_folio(struct file *file, struct folio *folio)  in afs_symlink_read_folio()  argument
337 	struct afs_vnode *vnode = AFS_FS_I(folio->mapping->host);  in afs_symlink_read_folio()
345 	fsreq->pos	= folio_pos(folio);  in afs_symlink_read_folio()
346 	fsreq->len	= folio_size(folio);  in afs_symlink_read_folio()
349 	iov_iter_xarray(&fsreq->def_iter, ITER_DEST, &folio->mapping->i_pages,  in afs_symlink_read_folio()
354 		folio_mark_uptodate(folio);  in afs_symlink_read_folio()
355 	folio_unlock(folio);  in afs_symlink_read_folio()
378 				 struct folio **foliop, void **_fsdata)  in afs_check_write_begin()
408 static void afs_invalidate_dirty(struct folio *folio, size_t offset,  in afs_invalidate_dirty()  argument
411 	struct afs_vnode *vnode = AFS_FS_I(folio_inode(folio));  in afs_invalidate_dirty()
415 	priv = (unsigned long)folio_get_private(folio);  in afs_invalidate_dirty()
418 	if (offset == 0 && length == folio_size(folio))  in afs_invalidate_dirty()
429 	f = afs_folio_dirty_from(folio, priv);  in afs_invalidate_dirty()
430 	t = afs_folio_dirty_to(folio, priv);  in afs_invalidate_dirty()
448 	priv = afs_folio_dirty(folio, f, t);  in afs_invalidate_dirty()
449 	folio_change_private(folio, (void *)priv);  in afs_invalidate_dirty()
450 	trace_afs_folio_dirty(vnode, tracepoint_string("trunc"), folio);  in afs_invalidate_dirty()
454 	trace_afs_folio_dirty(vnode, tracepoint_string("undirty"), folio);  in afs_invalidate_dirty()
455 	folio_clear_dirty_for_io(folio);  in afs_invalidate_dirty()
457 	trace_afs_folio_dirty(vnode, tracepoint_string("inval"), folio);  in afs_invalidate_dirty()
458 	folio_detach_private(folio);  in afs_invalidate_dirty()
466 static void afs_invalidate_folio(struct folio *folio, size_t offset,  in afs_invalidate_folio()  argument
469 	_enter("{%lu},%zu,%zu", folio->index, offset, length);  in afs_invalidate_folio()
471 	BUG_ON(!folio_test_locked(folio));  in afs_invalidate_folio()
473 	if (folio_get_private(folio))  in afs_invalidate_folio()
474 		afs_invalidate_dirty(folio, offset, length);  in afs_invalidate_folio()
476 	folio_wait_fscache(folio);  in afs_invalidate_folio()
484 static bool afs_release_folio(struct folio *folio, gfp_t gfp)  in afs_release_folio()  argument
486 	struct afs_vnode *vnode = AFS_FS_I(folio_inode(folio));  in afs_release_folio()
489 	       vnode->fid.vid, vnode->fid.vnode, folio_index(folio), folio->flags,  in afs_release_folio()
495 	if (folio_test_fscache(folio)) {  in afs_release_folio()
498 		folio_wait_fscache(folio);  in afs_release_folio()
503 	if (folio_test_private(folio)) {  in afs_release_folio()
504 		trace_afs_folio_dirty(vnode, tracepoint_string("rel"), folio);  in afs_release_folio()
505 		folio_detach_private(folio);  in afs_release_folio()