23 	struct orangefs_write_range *wr = NULL;  in orangefs_writepage_locked()  local
34 		wr = (struct orangefs_write_range *)page_private(page);  in orangefs_writepage_locked()
35 		WARN_ON(wr->pos >= len);  in orangefs_writepage_locked()
36 		off = wr->pos;  in orangefs_writepage_locked()
37 		if (off + wr->len > len)  in orangefs_writepage_locked()
40 			wlen = wr->len;  in orangefs_writepage_locked()
57 	    len, wr, NULL, NULL);  in orangefs_writepage_locked()
91 	struct orangefs_write_range *wrp, wr;  in orangefs_writepages_work()  local
115 	wr.uid = ow->uid;  in orangefs_writepages_work()
116 	wr.gid = ow->gid;  in orangefs_writepages_work()
118 	    0, &wr, NULL, NULL);  in orangefs_writepages_work()
153 	struct orangefs_write_range *wr = folio->private;  in orangefs_writepages_callback()  local
156 	if (!wr) {  in orangefs_writepages_callback()
166 		ow->off = wr->pos;  in orangefs_writepages_callback()
167 		ow->len = wr->len;  in orangefs_writepages_callback()
168 		ow->uid = wr->uid;  in orangefs_writepages_callback()
169 		ow->gid = wr->gid;  in orangefs_writepages_callback()
174 	if (!uid_eq(ow->uid, wr->uid) || !gid_eq(ow->gid, wr->gid)) {  in orangefs_writepages_callback()
180 	if (ow->off + ow->len == wr->pos) {  in orangefs_writepages_callback()
181 		ow->len += wr->len;  in orangefs_writepages_callback()
314 	struct orangefs_write_range *wr;  in orangefs_write_begin()  local
336 		struct orangefs_write_range *wr;  in orangefs_write_begin()  local
337 		wr = folio_get_private(folio);  in orangefs_write_begin()
338 		if (wr->pos + wr->len == pos &&  in orangefs_write_begin()
339 		    uid_eq(wr->uid, current_fsuid()) &&  in orangefs_write_begin()
340 		    gid_eq(wr->gid, current_fsgid())) {  in orangefs_write_begin()
341 			wr->len += len;  in orangefs_write_begin()
350 	wr = kmalloc(sizeof *wr, GFP_KERNEL);  in orangefs_write_begin()
351 	if (!wr)  in orangefs_write_begin()
354 	wr->pos = pos;  in orangefs_write_begin()
355 	wr->len = len;  in orangefs_write_begin()
356 	wr->uid = current_fsuid();  in orangefs_write_begin()
357 	wr->gid = current_fsgid();  in orangefs_write_begin()
358 	folio_attach_private(folio, wr);  in orangefs_write_begin()
402 	struct orangefs_write_range *wr = folio_get_private(folio);  in orangefs_invalidate_folio()  local
408 	} else if (folio_pos(folio) + offset <= wr->pos &&  in orangefs_invalidate_folio()
409 	    wr->pos + wr->len <= folio_pos(folio) + offset + length) {  in orangefs_invalidate_folio()
415 	} else if (wr->pos < folio_pos(folio) + offset &&  in orangefs_invalidate_folio()
416 	    wr->pos + wr->len <= folio_pos(folio) + offset + length &&  in orangefs_invalidate_folio()
417 	     folio_pos(folio) + offset < wr->pos + wr->len) {  in orangefs_invalidate_folio()
419 		x = wr->pos + wr->len - (folio_pos(folio) + offset);  in orangefs_invalidate_folio()
420 		WARN_ON(x > wr->len);  in orangefs_invalidate_folio()
421 		wr->len -= x;  in orangefs_invalidate_folio()
422 		wr->uid = current_fsuid();  in orangefs_invalidate_folio()
423 		wr->gid = current_fsgid();  in orangefs_invalidate_folio()
425 	} else if (folio_pos(folio) + offset <= wr->pos &&  in orangefs_invalidate_folio()
426 	    folio_pos(folio) + offset + length < wr->pos + wr->len &&  in orangefs_invalidate_folio()
427 	    wr->pos < folio_pos(folio) + offset + length) {  in orangefs_invalidate_folio()
429 		x = folio_pos(folio) + offset + length - wr->pos;  in orangefs_invalidate_folio()
430 		WARN_ON(x > wr->len);  in orangefs_invalidate_folio()
431 		wr->pos += x;  in orangefs_invalidate_folio()
432 		wr->len -= x;  in orangefs_invalidate_folio()
433 		wr->uid = current_fsuid();  in orangefs_invalidate_folio()
434 		wr->gid = current_fsgid();  in orangefs_invalidate_folio()
436 	} else if (wr->pos < folio_pos(folio) + offset &&  in orangefs_invalidate_folio()
437 	    folio_pos(folio) + offset + length < wr->pos + wr->len) {  in orangefs_invalidate_folio()
449 		if (!((folio_pos(folio) + offset + length <= wr->pos) ^  in orangefs_invalidate_folio()
450 		    (wr->pos + wr->len <= folio_pos(folio) + offset))) {  in orangefs_invalidate_folio()
455 			    wr->pos, wr->len);  in orangefs_invalidate_folio()
461 	 * Above there are returns where wr is freed or where we WARN.  in orangefs_invalidate_folio()
462 	 * Thus the following runs if wr was modified above.  in orangefs_invalidate_folio()
630 	struct orangefs_write_range *wr;  in orangefs_page_mkwrite()  local
652 		wr = folio_get_private(folio);  in orangefs_page_mkwrite()
653 		if (uid_eq(wr->uid, current_fsuid()) &&  in orangefs_page_mkwrite()
654 		    gid_eq(wr->gid, current_fsgid())) {  in orangefs_page_mkwrite()
655 			wr->pos = page_offset(vmf->page);  in orangefs_page_mkwrite()
656 			wr->len = PAGE_SIZE;  in orangefs_page_mkwrite()
665 	wr = kmalloc(sizeof *wr, GFP_KERNEL);  in orangefs_page_mkwrite()
666 	if (!wr) {  in orangefs_page_mkwrite()
670 	wr->pos = page_offset(vmf->page);  in orangefs_page_mkwrite()
671 	wr->len = PAGE_SIZE;  in orangefs_page_mkwrite()
672 	wr->uid = current_fsuid();  in orangefs_page_mkwrite()
673 	wr->gid = current_fsgid();  in orangefs_page_mkwrite()
674 	folio_attach_private(folio, wr);  in orangefs_page_mkwrite()