84 	struct ceph_snap_context *snapc;  in ceph_dirty_folio()  local
104 		snapc = ceph_get_snap_context(capsnap->context);  in ceph_dirty_folio()
108 		snapc = ceph_get_snap_context(ci->i_head_snapc);  in ceph_dirty_folio()
119 	     snapc, snapc->seq, snapc->num_snaps);  in ceph_dirty_folio()
127 	folio_attach_private(folio, snapc);  in ceph_dirty_folio()
142 	struct ceph_snap_context *snapc;  in ceph_invalidate_folio()  local
158 		snapc = folio_detach_private(folio);  in ceph_invalidate_folio()
159 		ceph_put_wrbuffer_cap_refs(ci, 1, snapc);  in ceph_invalidate_folio()
160 		ceph_put_snap_context(snapc);  in ceph_invalidate_folio()
566 	struct ceph_snap_context *snapc = NULL;  in get_oldest_context()  local
577 		if (snapc && capsnap->context != page_snapc)  in get_oldest_context()
593 		if (snapc)  in get_oldest_context()
596 		snapc = ceph_get_snap_context(capsnap->context);  in get_oldest_context()
598 		    page_snapc == snapc ||  in get_oldest_context()
599 		    page_snapc->seq > snapc->seq)  in get_oldest_context()
602 	if (!snapc && ci->i_wrbuffer_ref_head) {  in get_oldest_context()
603 		snapc = ceph_get_snap_context(ci->i_head_snapc);  in get_oldest_context()
605 		     snapc, ci->i_wrbuffer_ref_head);  in get_oldest_context()
615 	return snapc;  in get_oldest_context()
622 	struct ceph_snap_context *snapc;  in get_writepages_data_length()  local
627 	snapc = page_snap_context(ceph_fscrypt_pagecache_page(page));  in get_writepages_data_length()
628 	if (snapc != ci->i_head_snapc) {  in get_writepages_data_length()
632 			if (capsnap->context == snapc) {  in get_writepages_data_length()
662 	struct ceph_snap_context *snapc, *oldest;  in writepage_nounlock()  local
679 	snapc = page_snap_context(page);  in writepage_nounlock()
680 	if (!snapc) {  in writepage_nounlock()
684 	oldest = get_oldest_context(inode, &ceph_wbc, snapc);  in writepage_nounlock()
685 	if (snapc->seq > oldest->seq) {  in writepage_nounlock()
687 		     inode, page, snapc);  in writepage_nounlock()
709 	     inode, page, page->index, page_off, wlen, snapc, snapc->seq);  in writepage_nounlock()
717 				    CEPH_OSD_FLAG_WRITE, snapc,  in writepage_nounlock()
786 	WARN_ON_ONCE(oldest != snapc);  in writepage_nounlock()
788 	ceph_put_wrbuffer_cap_refs(ci, 1, snapc);  in writepage_nounlock()
789 	ceph_put_snap_context(snapc);  /* page's reference */  in writepage_nounlock()
837 	struct ceph_snap_context *snapc = req->r_snapc;  in writepages_finish()  local
910 	ceph_put_wrbuffer_cap_refs(ci, total_pages, snapc);  in writepages_finish()
932 	struct ceph_snap_context *snapc = NULL, *last_snapc = NULL, *pgsnapc;  in ceph_writepages_start()  local
975 	snapc = get_oldest_context(inode, &ceph_wbc, NULL);  in ceph_writepages_start()
976 	if (!snapc) {  in ceph_writepages_start()
983 	     snapc, snapc->seq, snapc->num_snaps);  in ceph_writepages_start()
986 	if (ceph_wbc.head_snapc && snapc != last_snapc) {  in ceph_writepages_start()
1015 	last_snapc = snapc;  in ceph_writepages_start()
1051 			if (pgsnapc != snapc) {  in ceph_writepages_start()
1053 				     pgsnapc, pgsnapc->seq, snapc, snapc->seq);  in ceph_writepages_start()
1210 					snapc, ceph_wbc.truncate_seq,  in ceph_writepages_start()
1220 						snapc, ceph_wbc.truncate_seq,  in ceph_writepages_start()
1373 					if (page_snap_context(page) != snapc)  in ceph_writepages_start()
1403 					   struct ceph_snap_context *snapc)  in context_is_writeable_or_written()  argument
1406 	int ret = !oldest || snapc->seq <= oldest->seq;  in context_is_writeable_or_written()
1436 		struct ceph_snap_context *snapc, *oldest;  in ceph_find_incompatible()  local
1440 		snapc = page_snap_context(page);  in ceph_find_incompatible()
1441 		if (!snapc || snapc == ci->i_head_snapc)  in ceph_find_incompatible()
1449 		if (snapc->seq > oldest->seq) {  in ceph_find_incompatible()
1452 			dout(" page %p snapc %p not current or oldest\n", page, snapc);  in ceph_find_incompatible()
1453 			return ceph_get_snap_context(snapc);  in ceph_find_incompatible()
1458 		dout(" page %p snapc %p not current, but oldest\n", page, snapc);  in ceph_find_incompatible()
1473 	struct ceph_snap_context *snapc;  in ceph_netfs_check_write_begin()  local
1475 	snapc = ceph_find_incompatible(folio_page(*foliop, 0));  in ceph_netfs_check_write_begin()
1476 	if (snapc) {  in ceph_netfs_check_write_begin()
1482 		if (IS_ERR(snapc))  in ceph_netfs_check_write_begin()
1483 			return PTR_ERR(snapc);  in ceph_netfs_check_write_begin()
1487 					context_is_writeable_or_written(inode, snapc));  in ceph_netfs_check_write_begin()
1488 		ceph_put_snap_context(snapc);  in ceph_netfs_check_write_begin()
1725 		struct ceph_snap_context *snapc;  in ceph_page_mkwrite()  local
1735 		snapc = ceph_find_incompatible(page);  in ceph_page_mkwrite()
1736 		if (!snapc) {  in ceph_page_mkwrite()
1745 		if (IS_ERR(snapc)) {  in ceph_page_mkwrite()
1752 				context_is_writeable_or_written(inode, snapc));  in ceph_page_mkwrite()
1753 		ceph_put_snap_context(snapc);  in ceph_page_mkwrite()