84 	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 	attach_page_private(page, snapc);  in ceph_set_page_dirty()
142 	struct ceph_snap_context *snapc;  in ceph_invalidatepage()  local
162 	snapc = detach_page_private(page);  in ceph_invalidatepage()
163 	ceph_put_wrbuffer_cap_refs(ci, 1, snapc);  in ceph_invalidatepage()
164 	ceph_put_snap_context(snapc);  in ceph_invalidatepage()
398 	struct ceph_snap_context *snapc = NULL;  in get_oldest_context()  local
409 		if (snapc && capsnap->context != page_snapc)  in get_oldest_context()
425 		if (snapc)  in get_oldest_context()
428 		snapc = ceph_get_snap_context(capsnap->context);  in get_oldest_context()
430 		    page_snapc == snapc ||  in get_oldest_context()
431 		    page_snapc->seq > snapc->seq)  in get_oldest_context()
434 	if (!snapc && ci->i_wrbuffer_ref_head) {  in get_oldest_context()
435 		snapc = ceph_get_snap_context(ci->i_head_snapc);  in get_oldest_context()
437 		     snapc, ci->i_wrbuffer_ref_head);  in get_oldest_context()
447 	return snapc;  in get_oldest_context()
454 	struct ceph_snap_context *snapc = page_snap_context(page);  in get_writepages_data_length()  local
458 	if (snapc != ci->i_head_snapc) {  in get_writepages_data_length()
462 			if (capsnap->context == snapc) {  in get_writepages_data_length()
488 	struct ceph_snap_context *snapc, *oldest;  in writepage_nounlock()  local
499 	snapc = page_snap_context(page);  in writepage_nounlock()
500 	if (!snapc) {  in writepage_nounlock()
504 	oldest = get_oldest_context(inode, &ceph_wbc, snapc);  in writepage_nounlock()
505 	if (snapc->seq > oldest->seq) {  in writepage_nounlock()
507 		     inode, page, snapc);  in writepage_nounlock()
527 	     inode, page, page->index, page_off, len, snapc, snapc->seq);  in writepage_nounlock()
535 				    CEPH_OSD_OP_WRITE, CEPH_OSD_FLAG_WRITE, snapc,  in writepage_nounlock()
583 	WARN_ON_ONCE(oldest != snapc);  in writepage_nounlock()
585 	ceph_put_wrbuffer_cap_refs(ci, 1, snapc);  in writepage_nounlock()
586 	ceph_put_snap_context(snapc);  /* page's reference */  in writepage_nounlock()
627 	struct ceph_snap_context *snapc = req->r_snapc;  in writepages_finish()  local
693 	ceph_put_wrbuffer_cap_refs(ci, total_pages, snapc);  in writepages_finish()
714 	struct ceph_snap_context *snapc = NULL, *last_snapc = NULL, *pgsnapc;  in ceph_writepages_start()  local
746 	snapc = get_oldest_context(inode, &ceph_wbc, NULL);  in ceph_writepages_start()
747 	if (!snapc) {  in ceph_writepages_start()
754 	     snapc, snapc->seq, snapc->num_snaps);  in ceph_writepages_start()
757 	if (ceph_wbc.head_snapc && snapc != last_snapc) {  in ceph_writepages_start()
783 	last_snapc = snapc;  in ceph_writepages_start()
819 			if (pgsnapc != snapc) {  in ceph_writepages_start()
821 				     pgsnapc, pgsnapc->seq, snapc, snapc->seq);  in ceph_writepages_start()
959 					snapc, ceph_wbc.truncate_seq,  in ceph_writepages_start()
969 						snapc, ceph_wbc.truncate_seq,  in ceph_writepages_start()
1094 					if (page_snap_context(page) != snapc)  in ceph_writepages_start()
1124 					   struct ceph_snap_context *snapc)  in context_is_writeable_or_written()  argument
1127 	int ret = !oldest || snapc->seq <= oldest->seq;  in context_is_writeable_or_written()
1157 		struct ceph_snap_context *snapc, *oldest;  in ceph_find_incompatible()  local
1161 		snapc = page_snap_context(page);  in ceph_find_incompatible()
1162 		if (!snapc || snapc == ci->i_head_snapc)  in ceph_find_incompatible()
1170 		if (snapc->seq > oldest->seq) {  in ceph_find_incompatible()
1173 			dout(" page %p snapc %p not current or oldest\n", page, snapc);  in ceph_find_incompatible()
1174 			return ceph_get_snap_context(snapc);  in ceph_find_incompatible()
1179 		dout(" page %p snapc %p not current, but oldest\n", page, snapc);  in ceph_find_incompatible()
1194 	struct ceph_snap_context *snapc;  in ceph_netfs_check_write_begin()  local
1196 	snapc = ceph_find_incompatible(page);  in ceph_netfs_check_write_begin()
1197 	if (snapc) {  in ceph_netfs_check_write_begin()
1202 		if (IS_ERR(snapc))  in ceph_netfs_check_write_begin()
1203 			return PTR_ERR(snapc);  in ceph_netfs_check_write_begin()
1207 					context_is_writeable_or_written(inode, snapc));  in ceph_netfs_check_write_begin()
1208 		ceph_put_snap_context(snapc);  in ceph_netfs_check_write_begin()
1495 		struct ceph_snap_context *snapc;  in ceph_page_mkwrite()  local
1505 		snapc = ceph_find_incompatible(page);  in ceph_page_mkwrite()
1506 		if (!snapc) {  in ceph_page_mkwrite()
1515 		if (IS_ERR(snapc)) {  in ceph_page_mkwrite()
1522 				context_is_writeable_or_written(inode, snapc));  in ceph_page_mkwrite()
1523 		ceph_put_snap_context(snapc);  in ceph_page_mkwrite()