fs/orangefs/inode.c

23 	struct orangefs_write_range *wr = NULL;
34 		wr = (struct orangefs_write_range *)page_private(page);
35 		WARN_ON(wr->pos >= len);
36 		off = wr->pos;
37 		if (off + wr->len > len)
40 			wlen = wr->len;
57 	    len, wr, NULL, NULL);
92 	struct orangefs_write_range *wrp, wr;
116 	wr.uid = ow->uid;
117 	wr.gid = ow->gid;
119 	    0, &wr, NULL, NULL);
155 	struct orangefs_write_range *wr = folio->private;
158 	if (!wr) {
168 		ow->off = wr->pos;
169 		ow->len = wr->len;
170 		ow->uid = wr->uid;
171 		ow->gid = wr->gid;
176 	if (!uid_eq(ow->uid, wr->uid) || !gid_eq(ow->gid, wr->gid)) {
182 	if (ow->off + ow->len == wr->pos) {
183 		ow->len += wr->len;
321 	struct orangefs_write_range *wr;
347 		struct orangefs_write_range *wr;
348 		wr = folio_get_private(folio);
349 		if (wr->pos + wr->len == pos &&
350 		    uid_eq(wr->uid, current_fsuid()) &&
351 		    gid_eq(wr->gid, current_fsgid())) {
352 			wr->len += len;
361 	wr = kmalloc(sizeof *wr, GFP_KERNEL);
362 	if (!wr)
365 	wr->pos = pos;
366 	wr->len = len;
367 	wr->uid = current_fsuid();
368 	wr->gid = current_fsgid();
369 	folio_attach_private(folio, wr);
412 	struct orangefs_write_range *wr = folio_get_private(folio);
418 	} else if (folio_pos(folio) + offset <= wr->pos &&
419 	    wr->pos + wr->len <= folio_pos(folio) + offset + length) {
425 	} else if (wr->pos < folio_pos(folio) + offset &&
426 	    wr->pos + wr->len <= folio_pos(folio) + offset + length &&
427 	     folio_pos(folio) + offset < wr->pos + wr->len) {
429 		x = wr->pos + wr->len - (folio_pos(folio) + offset);
430 		WARN_ON(x > wr->len);
431 		wr->len -= x;
432 		wr->uid = current_fsuid();
433 		wr->gid = current_fsgid();
435 	} else if (folio_pos(folio) + offset <= wr->pos &&
436 	    folio_pos(folio) + offset + length < wr->pos + wr->len &&
437 	    wr->pos < folio_pos(folio) + offset + length) {
439 		x = folio_pos(folio) + offset + length - wr->pos;
440 		WARN_ON(x > wr->len);
441 		wr->pos += x;
442 		wr->len -= x;
443 		wr->uid = current_fsuid();
444 		wr->gid = current_fsgid();
446 	} else if (wr->pos < folio_pos(folio) + offset &&
447 	    folio_pos(folio) + offset + length < wr->pos + wr->len) {
459 		if (!((folio_pos(folio) + offset + length <= wr->pos) ^
460 		    (wr->pos + wr->len <= folio_pos(folio) + offset))) {
465 			    wr->pos, wr->len);
471 	 * Above there are returns where wr is freed or where we WARN.
472 	 * Thus the following runs if wr was modified above.
640 	struct orangefs_write_range *wr;
662 		wr = folio_get_private(folio);
663 		if (uid_eq(wr->uid, current_fsuid()) &&
664 		    gid_eq(wr->gid, current_fsgid())) {
665 			wr->pos = page_offset(vmf->page);
666 			wr->len = PAGE_SIZE;
675 	wr = kmalloc(sizeof *wr, GFP_KERNEL);
676 	if (!wr) {
680 	wr->pos = page_offset(vmf->page);
681 	wr->len = PAGE_SIZE;
682 	wr->uid = current_fsuid();
683 	wr->gid = current_fsgid();
684 	folio_attach_private(folio, wr);