80 	struct ceph_snap_context *snapc;  in ceph_set_page_dirty()  local
104 		snapc = ceph_get_snap_context(capsnap->context);  in ceph_set_page_dirty()
108 		snapc = ceph_get_snap_context(ci->i_head_snapc);  in ceph_set_page_dirty()
119 	     snapc, snapc->seq, snapc->num_snaps);  in ceph_set_page_dirty()
127 	page->private = (unsigned long)snapc;  in ceph_set_page_dirty()
147 	struct ceph_snap_context *snapc = page_snap_context(page);  in ceph_invalidatepage()  local
167 	ceph_put_wrbuffer_cap_refs(ci, 1, snapc);  in ceph_invalidatepage()
168 	ceph_put_snap_context(snapc);  in ceph_invalidatepage()
514 	struct ceph_snap_context *snapc = NULL;  in get_oldest_context()  local
525 		if (snapc && capsnap->context != page_snapc)  in get_oldest_context()
541 		if (snapc)  in get_oldest_context()
544 		snapc = ceph_get_snap_context(capsnap->context);  in get_oldest_context()
546 		    page_snapc == snapc ||  in get_oldest_context()
547 		    page_snapc->seq > snapc->seq)  in get_oldest_context()
550 	if (!snapc && ci->i_wrbuffer_ref_head) {  in get_oldest_context()
551 		snapc = ceph_get_snap_context(ci->i_head_snapc);  in get_oldest_context()
553 		     snapc, ci->i_wrbuffer_ref_head);  in get_oldest_context()
563 	return snapc;  in get_oldest_context()
570 	struct ceph_snap_context *snapc = page_snap_context(page);  in get_writepages_data_length()  local
574 	if (snapc != ci->i_head_snapc) {  in get_writepages_data_length()
578 			if (capsnap->context == snapc) {  in get_writepages_data_length()
604 	struct ceph_snap_context *snapc, *oldest;  in writepage_nounlock()  local
615 	snapc = page_snap_context(page);  in writepage_nounlock()
616 	if (!snapc) {  in writepage_nounlock()
620 	oldest = get_oldest_context(inode, &ceph_wbc, snapc);  in writepage_nounlock()
621 	if (snapc->seq > oldest->seq) {  in writepage_nounlock()
623 		     inode, page, snapc);  in writepage_nounlock()
643 	     inode, page, page->index, page_off, len, snapc, snapc->seq);  in writepage_nounlock()
651 				    CEPH_OSD_OP_WRITE, CEPH_OSD_FLAG_WRITE, snapc,  in writepage_nounlock()
701 	ceph_put_wrbuffer_cap_refs(ci, 1, snapc);  in writepage_nounlock()
702 	ceph_put_snap_context(snapc);  /* page's reference */  in writepage_nounlock()
743 	struct ceph_snap_context *snapc = req->r_snapc;  in writepages_finish()  local
809 	ceph_put_wrbuffer_cap_refs(ci, total_pages, snapc);  in writepages_finish()
830 	struct ceph_snap_context *snapc = NULL, *last_snapc = NULL, *pgsnapc;  in ceph_writepages_start()  local
862 	snapc = get_oldest_context(inode, &ceph_wbc, NULL);  in ceph_writepages_start()
863 	if (!snapc) {  in ceph_writepages_start()
870 	     snapc, snapc->seq, snapc->num_snaps);  in ceph_writepages_start()
873 	if (ceph_wbc.head_snapc && snapc != last_snapc) {  in ceph_writepages_start()
899 	last_snapc = snapc;  in ceph_writepages_start()
935 			if (pgsnapc != snapc) {  in ceph_writepages_start()
937 				     pgsnapc, pgsnapc->seq, snapc, snapc->seq);  in ceph_writepages_start()
1075 					snapc, ceph_wbc.truncate_seq,  in ceph_writepages_start()
1085 						snapc, ceph_wbc.truncate_seq,  in ceph_writepages_start()
1210 					if (page_snap_context(page) != snapc)  in ceph_writepages_start()
1240 					   struct ceph_snap_context *snapc)  in context_is_writeable_or_written()  argument
1243 	int ret = !oldest || snapc->seq <= oldest->seq;  in context_is_writeable_or_written()
1273 		struct ceph_snap_context *snapc, *oldest;  in ceph_find_incompatible()  local
1277 		snapc = page_snap_context(page);  in ceph_find_incompatible()
1278 		if (!snapc || snapc == ci->i_head_snapc)  in ceph_find_incompatible()
1286 		if (snapc->seq > oldest->seq) {  in ceph_find_incompatible()
1289 			dout(" page %p snapc %p not current or oldest\n", page, snapc);  in ceph_find_incompatible()
1290 			return ceph_get_snap_context(snapc);  in ceph_find_incompatible()
1295 		dout(" page %p snapc %p not current, but oldest\n", page, snapc);  in ceph_find_incompatible()
1315 	struct ceph_snap_context *snapc;  in ceph_write_begin()  local
1330 		snapc = ceph_find_incompatible(page);  in ceph_write_begin()
1331 		if (snapc) {  in ceph_write_begin()
1332 			if (IS_ERR(snapc)) {  in ceph_write_begin()
1333 				r = PTR_ERR(snapc);  in ceph_write_begin()
1341 						context_is_writeable_or_written(inode, snapc));  in ceph_write_begin()
1342 			ceph_put_snap_context(snapc);  in ceph_write_begin()
1620 		struct ceph_snap_context *snapc;  in ceph_page_mkwrite()  local
1630 		snapc = ceph_find_incompatible(page);  in ceph_page_mkwrite()
1631 		if (!snapc) {  in ceph_page_mkwrite()
1640 		if (IS_ERR(snapc)) {  in ceph_page_mkwrite()
1647 				context_is_writeable_or_written(inode, snapc));  in ceph_page_mkwrite()
1648 		ceph_put_snap_context(snapc);  in ceph_page_mkwrite()