80 	struct ceph_snap_context *snapc;  in ceph_set_page_dirty()  local
100 		snapc = ceph_get_snap_context(capsnap->context);  in ceph_set_page_dirty()
104 		snapc = ceph_get_snap_context(ci->i_head_snapc);  in ceph_set_page_dirty()
115 	     snapc, snapc->seq, snapc->num_snaps);  in ceph_set_page_dirty()
123 	page->private = (unsigned long)snapc;  in ceph_set_page_dirty()
139 	struct ceph_snap_context *snapc = page_snap_context(page);  in ceph_invalidatepage()  local
159 	ceph_put_wrbuffer_cap_refs(ci, 1, snapc);  in ceph_invalidatepage()
160 	ceph_put_snap_context(snapc);  in ceph_invalidatepage()
506 	struct ceph_snap_context *snapc = NULL;  in get_oldest_context()  local
517 		if (snapc && capsnap->context != page_snapc)  in get_oldest_context()
533 		if (snapc)  in get_oldest_context()
536 		snapc = ceph_get_snap_context(capsnap->context);  in get_oldest_context()
538 		    page_snapc == snapc ||  in get_oldest_context()
539 		    page_snapc->seq > snapc->seq)  in get_oldest_context()
542 	if (!snapc && ci->i_wrbuffer_ref_head) {  in get_oldest_context()
543 		snapc = ceph_get_snap_context(ci->i_head_snapc);  in get_oldest_context()
545 		     snapc, ci->i_wrbuffer_ref_head);  in get_oldest_context()
555 	return snapc;  in get_oldest_context()
562 	struct ceph_snap_context *snapc = page_snap_context(page);  in get_writepages_data_length()  local
566 	if (snapc != ci->i_head_snapc) {  in get_writepages_data_length()
570 			if (capsnap->context == snapc) {  in get_writepages_data_length()
596 	struct ceph_snap_context *snapc, *oldest;  in writepage_nounlock()  local
607 	snapc = page_snap_context(page);  in writepage_nounlock()
608 	if (!snapc) {  in writepage_nounlock()
612 	oldest = get_oldest_context(inode, &ceph_wbc, snapc);  in writepage_nounlock()
613 	if (snapc->seq > oldest->seq) {  in writepage_nounlock()
615 		     inode, page, snapc);  in writepage_nounlock()
635 	     inode, page, page->index, page_off, len, snapc, snapc->seq);  in writepage_nounlock()
643 				    CEPH_OSD_OP_WRITE, CEPH_OSD_FLAG_WRITE, snapc,  in writepage_nounlock()
693 	ceph_put_wrbuffer_cap_refs(ci, 1, snapc);  in writepage_nounlock()
694 	ceph_put_snap_context(snapc);  /* page's reference */  in writepage_nounlock()
735 	struct ceph_snap_context *snapc = req->r_snapc;  in writepages_finish()  local
801 	ceph_put_wrbuffer_cap_refs(ci, total_pages, snapc);  in writepages_finish()
822 	struct ceph_snap_context *snapc = NULL, *last_snapc = NULL, *pgsnapc;  in ceph_writepages_start()  local
854 	snapc = get_oldest_context(inode, &ceph_wbc, NULL);  in ceph_writepages_start()
855 	if (!snapc) {  in ceph_writepages_start()
862 	     snapc, snapc->seq, snapc->num_snaps);  in ceph_writepages_start()
865 	if (ceph_wbc.head_snapc && snapc != last_snapc) {  in ceph_writepages_start()
891 	last_snapc = snapc;  in ceph_writepages_start()
927 			if (pgsnapc != snapc) {  in ceph_writepages_start()
929 				     pgsnapc, pgsnapc->seq, snapc, snapc->seq);  in ceph_writepages_start()
1067 					snapc, ceph_wbc.truncate_seq,  in ceph_writepages_start()
1077 						snapc, ceph_wbc.truncate_seq,  in ceph_writepages_start()
1202 					if (page_snap_context(page) != snapc)  in ceph_writepages_start()
1232 					   struct ceph_snap_context *snapc)  in context_is_writeable_or_written()  argument
1235 	int ret = !oldest || snapc->seq <= oldest->seq;  in context_is_writeable_or_written()
1265 		struct ceph_snap_context *snapc, *oldest;  in ceph_find_incompatible()  local
1269 		snapc = page_snap_context(page);  in ceph_find_incompatible()
1270 		if (!snapc || snapc == ci->i_head_snapc)  in ceph_find_incompatible()
1278 		if (snapc->seq > oldest->seq) {  in ceph_find_incompatible()
1281 			dout(" page %p snapc %p not current or oldest\n", page, snapc);  in ceph_find_incompatible()
1282 			return ceph_get_snap_context(snapc);  in ceph_find_incompatible()
1287 		dout(" page %p snapc %p not current, but oldest\n", page, snapc);  in ceph_find_incompatible()
1346 	struct ceph_snap_context *snapc;  in ceph_write_begin()  local
1360 		snapc = ceph_find_incompatible(page);  in ceph_write_begin()
1361 		if (snapc) {  in ceph_write_begin()
1362 			if (IS_ERR(snapc)) {  in ceph_write_begin()
1363 				r = PTR_ERR(snapc);  in ceph_write_begin()
1371 						context_is_writeable_or_written(inode, snapc));  in ceph_write_begin()
1372 			ceph_put_snap_context(snapc);  in ceph_write_begin()
1640 		struct ceph_snap_context *snapc;  in ceph_page_mkwrite()  local
1650 		snapc = ceph_find_incompatible(page);  in ceph_page_mkwrite()
1651 		if (!snapc) {  in ceph_page_mkwrite()
1660 		if (IS_ERR(snapc)) {  in ceph_page_mkwrite()
1667 				context_is_writeable_or_written(inode, snapc));  in ceph_page_mkwrite()
1668 		ceph_put_snap_context(snapc);  in ceph_page_mkwrite()