86 	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()
143 	struct ceph_snap_context *snapc;  in ceph_invalidate_folio()  local
157 		snapc = folio_detach_private(folio);  in ceph_invalidate_folio()
158 		ceph_put_wrbuffer_cap_refs(ci, 1, snapc);  in ceph_invalidate_folio()
159 		ceph_put_snap_context(snapc);  in ceph_invalidate_folio()
574 	struct ceph_snap_context *snapc = NULL;  in get_oldest_context()  local
585 		if (snapc && capsnap->context != page_snapc)  in get_oldest_context()
601 		if (snapc)  in get_oldest_context()
604 		snapc = ceph_get_snap_context(capsnap->context);  in get_oldest_context()
606 		    page_snapc == snapc ||  in get_oldest_context()
607 		    page_snapc->seq > snapc->seq)  in get_oldest_context()
610 	if (!snapc && ci->i_wrbuffer_ref_head) {  in get_oldest_context()
611 		snapc = ceph_get_snap_context(ci->i_head_snapc);  in get_oldest_context()
612 		doutc(cl, " head snapc %p has %d dirty pages\n", snapc,  in get_oldest_context()
623 	return snapc;  in get_oldest_context()
630 	struct ceph_snap_context *snapc;  in get_writepages_data_length()  local
635 	snapc = page_snap_context(ceph_fscrypt_pagecache_page(page));  in get_writepages_data_length()
636 	if (snapc != ci->i_head_snapc) {  in get_writepages_data_length()
640 			if (capsnap->context == snapc) {  in get_writepages_data_length()
671 	struct ceph_snap_context *snapc, *oldest;  in writepage_nounlock()  local
689 	snapc = page_snap_context(page);  in writepage_nounlock()
690 	if (!snapc) {  in writepage_nounlock()
695 	oldest = get_oldest_context(inode, &ceph_wbc, snapc);  in writepage_nounlock()
696 	if (snapc->seq > oldest->seq) {  in writepage_nounlock()
698 		      ceph_vinop(inode), page, snapc);  in writepage_nounlock()
720 	      ceph_vinop(inode), page, page->index, page_off, wlen, snapc,  in writepage_nounlock()
721 	      snapc->seq);  in writepage_nounlock()
729 				    CEPH_OSD_FLAG_WRITE, snapc,  in writepage_nounlock()
801 	WARN_ON_ONCE(oldest != snapc);  in writepage_nounlock()
803 	ceph_put_wrbuffer_cap_refs(ci, 1, snapc);  in writepage_nounlock()
804 	ceph_put_snap_context(snapc);  /* page's reference */  in writepage_nounlock()
855 	struct ceph_snap_context *snapc = req->r_snapc;  in writepages_finish()  local
931 	ceph_put_wrbuffer_cap_refs(ci, total_pages, snapc);  in writepages_finish()
954 	struct ceph_snap_context *snapc = NULL, *last_snapc = NULL, *pgsnapc;  in ceph_writepages_start()  local
997 	snapc = get_oldest_context(inode, &ceph_wbc, NULL);  in ceph_writepages_start()
998 	if (!snapc) {  in ceph_writepages_start()
1004 	doutc(cl, " oldest snapc is %p seq %lld (%d snaps)\n", snapc,  in ceph_writepages_start()
1005 	      snapc->seq, snapc->num_snaps);  in ceph_writepages_start()
1008 	if (ceph_wbc.head_snapc && snapc != last_snapc) {  in ceph_writepages_start()
1037 	last_snapc = snapc;  in ceph_writepages_start()
1073 			if (pgsnapc != snapc) {  in ceph_writepages_start()
1075 				      pgsnapc, pgsnapc->seq, snapc, snapc->seq);  in ceph_writepages_start()
1234 					snapc, ceph_wbc.truncate_seq,  in ceph_writepages_start()
1244 						snapc, ceph_wbc.truncate_seq,  in ceph_writepages_start()
1398 					if (page_snap_context(page) != snapc)  in ceph_writepages_start()
1429 					   struct ceph_snap_context *snapc)  in context_is_writeable_or_written()  argument
1432 	int ret = !oldest || snapc->seq <= oldest->seq;  in context_is_writeable_or_written()
1463 		struct ceph_snap_context *snapc, *oldest;  in ceph_find_incompatible()  local
1467 		snapc = page_snap_context(page);  in ceph_find_incompatible()
1468 		if (!snapc || snapc == ci->i_head_snapc)  in ceph_find_incompatible()
1476 		if (snapc->seq > oldest->seq) {  in ceph_find_incompatible()
1480 			      ceph_vinop(inode), page, snapc);  in ceph_find_incompatible()
1481 			return ceph_get_snap_context(snapc);  in ceph_find_incompatible()
1487 		      ceph_vinop(inode), page, snapc);  in ceph_find_incompatible()
1502 	struct ceph_snap_context *snapc;  in ceph_netfs_check_write_begin()  local
1504 	snapc = ceph_find_incompatible(folio_page(*foliop, 0));  in ceph_netfs_check_write_begin()
1505 	if (snapc) {  in ceph_netfs_check_write_begin()
1511 		if (IS_ERR(snapc))  in ceph_netfs_check_write_begin()
1512 			return PTR_ERR(snapc);  in ceph_netfs_check_write_begin()
1516 					context_is_writeable_or_written(inode, snapc));  in ceph_netfs_check_write_begin()
1517 		ceph_put_snap_context(snapc);  in ceph_netfs_check_write_begin()
1754 		struct ceph_snap_context *snapc;  in ceph_page_mkwrite()  local
1764 		snapc = ceph_find_incompatible(page);  in ceph_page_mkwrite()
1765 		if (!snapc) {  in ceph_page_mkwrite()
1774 		if (IS_ERR(snapc)) {  in ceph_page_mkwrite()
1781 				context_is_writeable_or_written(inode, snapc));  in ceph_page_mkwrite()
1782 		ceph_put_snap_context(snapc);  in ceph_page_mkwrite()