1285 static void ocfs2_unlock_pages(struct ocfs2_write_ctxt *wc)  in ocfs2_unlock_pages()  argument
1294 	if (wc->w_target_locked) {  in ocfs2_unlock_pages()
1295 		BUG_ON(!wc->w_target_page);  in ocfs2_unlock_pages()
1296 		for (i = 0; i < wc->w_num_pages; i++) {  in ocfs2_unlock_pages()
1297 			if (wc->w_target_page == wc->w_pages[i]) {  in ocfs2_unlock_pages()
1298 				wc->w_pages[i] = NULL;  in ocfs2_unlock_pages()
1302 		mark_page_accessed(wc->w_target_page);  in ocfs2_unlock_pages()
1303 		page_cache_release(wc->w_target_page);  in ocfs2_unlock_pages()
1305 	ocfs2_unlock_and_free_pages(wc->w_pages, wc->w_num_pages);  in ocfs2_unlock_pages()
1308 static void ocfs2_free_write_ctxt(struct ocfs2_write_ctxt *wc)  in ocfs2_free_write_ctxt()  argument
1310 	ocfs2_unlock_pages(wc);  in ocfs2_free_write_ctxt()
1311 	brelse(wc->w_di_bh);  in ocfs2_free_write_ctxt()
1312 	kfree(wc);  in ocfs2_free_write_ctxt()
1320 	struct ocfs2_write_ctxt *wc;  in ocfs2_alloc_write_ctxt()  local
1322 	wc = kzalloc(sizeof(struct ocfs2_write_ctxt), GFP_NOFS);  in ocfs2_alloc_write_ctxt()
1323 	if (!wc)  in ocfs2_alloc_write_ctxt()
1326 	wc->w_cpos = pos >> osb->s_clustersize_bits;  in ocfs2_alloc_write_ctxt()
1327 	wc->w_first_new_cpos = UINT_MAX;  in ocfs2_alloc_write_ctxt()
1329 	wc->w_clen = cend - wc->w_cpos + 1;  in ocfs2_alloc_write_ctxt()
1331 	wc->w_di_bh = di_bh;  in ocfs2_alloc_write_ctxt()
1334 		wc->w_large_pages = 1;  in ocfs2_alloc_write_ctxt()
1336 		wc->w_large_pages = 0;  in ocfs2_alloc_write_ctxt()
1338 	ocfs2_init_dealloc_ctxt(&wc->w_dealloc);  in ocfs2_alloc_write_ctxt()
1340 	*wcp = wc;  in ocfs2_alloc_write_ctxt()
1391 				struct ocfs2_write_ctxt *wc,  in ocfs2_write_failure()  argument
1399 	ocfs2_zero_new_buffers(wc->w_target_page, from, to);  in ocfs2_write_failure()
1401 	for(i = 0; i < wc->w_num_pages; i++) {  in ocfs2_write_failure()
1402 		tmppage = wc->w_pages[i];  in ocfs2_write_failure()
1406 				ocfs2_jbd2_file_inode(wc->w_handle, inode);  in ocfs2_write_failure()
1414 					struct ocfs2_write_ctxt *wc,  in ocfs2_prepare_page_for_write()  argument
1433 	if (page == wc->w_target_page) {  in ocfs2_prepare_page_for_write()
1498 				      struct ocfs2_write_ctxt *wc,  in ocfs2_grab_pages_for_write()  argument
1518 		wc->w_num_pages = ocfs2_pages_per_cluster(inode->i_sb);  in ocfs2_grab_pages_for_write()
1528 		if ((start + wc->w_num_pages) > end_index)  in ocfs2_grab_pages_for_write()
1529 			wc->w_num_pages = end_index - start;  in ocfs2_grab_pages_for_write()
1531 		wc->w_num_pages = 1;  in ocfs2_grab_pages_for_write()
1535 	for(i = 0; i < wc->w_num_pages; i++) {  in ocfs2_grab_pages_for_write()
1555 			wc->w_pages[i] = mmap_page;  in ocfs2_grab_pages_for_write()
1556 			wc->w_target_locked = true;  in ocfs2_grab_pages_for_write()
1558 			wc->w_pages[i] = find_or_create_page(mapping, index,  in ocfs2_grab_pages_for_write()
1560 			if (!wc->w_pages[i]) {  in ocfs2_grab_pages_for_write()
1566 		wait_for_stable_page(wc->w_pages[i]);  in ocfs2_grab_pages_for_write()
1569 			wc->w_target_page = wc->w_pages[i];  in ocfs2_grab_pages_for_write()
1573 		wc->w_target_locked = false;  in ocfs2_grab_pages_for_write()
1585 			       struct ocfs2_write_ctxt *wc, u32 cpos,  in ocfs2_write_cluster()  argument
1603 					   &tmp_pos, 1, 0, wc->w_di_bh,  in ocfs2_write_cluster()
1604 					   wc->w_handle, data_ac,  in ocfs2_write_cluster()
1624 					      wc->w_di_bh);  in ocfs2_write_cluster()
1626 						wc->w_handle, cpos, 1, phys,  in ocfs2_write_cluster()
1627 						meta_ac, &wc->w_dealloc);  in ocfs2_write_cluster()
1655 	for(i = 0; i < wc->w_num_pages; i++) {  in ocfs2_write_cluster()
1658 		tmpret = ocfs2_prepare_page_for_write(inode, &p_blkno, wc,  in ocfs2_write_cluster()
1659 						      wc->w_pages[i], cpos,  in ocfs2_write_cluster()
1673 		ocfs2_write_failure(inode, wc, user_pos, user_len);  in ocfs2_write_cluster()
1683 				       struct ocfs2_write_ctxt *wc,  in ocfs2_write_cluster_by_desc()  argument
1692 	for (i = 0; i < wc->w_clen; i++) {  in ocfs2_write_cluster_by_desc()
1693 		desc = &wc->w_desc[i];  in ocfs2_write_cluster_by_desc()
1708 					  wc, desc->c_cpos, pos, local_len);  in ocfs2_write_cluster_by_desc()
1729 					struct ocfs2_write_ctxt *wc,  in ocfs2_set_target_boundaries()  argument
1734 	wc->w_target_from = pos & (PAGE_CACHE_SIZE - 1);  in ocfs2_set_target_boundaries()
1735 	wc->w_target_to = wc->w_target_from + len;  in ocfs2_set_target_boundaries()
1749 	if (wc->w_large_pages) {  in ocfs2_set_target_boundaries()
1756 		desc = &wc->w_desc[0];  in ocfs2_set_target_boundaries()
1760 							&wc->w_target_from,  in ocfs2_set_target_boundaries()
1763 		desc = &wc->w_desc[wc->w_clen - 1];  in ocfs2_set_target_boundaries()
1768 							&wc->w_target_to);  in ocfs2_set_target_boundaries()
1770 		wc->w_target_from = 0;  in ocfs2_set_target_boundaries()
1771 		wc->w_target_to = PAGE_CACHE_SIZE;  in ocfs2_set_target_boundaries()
1784 				     struct ocfs2_write_ctxt *wc,  in ocfs2_populate_write_desc()  argument
1798 	for (i = 0; i < wc->w_clen; i++) {  in ocfs2_populate_write_desc()
1799 		desc = &wc->w_desc[i];  in ocfs2_populate_write_desc()
1800 		desc->c_cpos = wc->w_cpos + i;  in ocfs2_populate_write_desc()
1841 		if (desc->c_cpos >= wc->w_first_new_cpos) {  in ocfs2_populate_write_desc()
1868 				    struct ocfs2_write_ctxt *wc)  in ocfs2_write_begin_inline()  argument
1874 	struct ocfs2_dinode *di = (struct ocfs2_dinode *)wc->w_di_bh->b_data;  in ocfs2_write_begin_inline()
1894 	wc->w_pages[0] = wc->w_target_page = page;  in ocfs2_write_begin_inline()
1895 	wc->w_num_pages = 1;  in ocfs2_write_begin_inline()
1897 	ret = ocfs2_journal_access_di(handle, INODE_CACHE(inode), wc->w_di_bh,  in ocfs2_write_begin_inline()
1910 		ret = ocfs2_read_inline_data(inode, page, wc->w_di_bh);  in ocfs2_write_begin_inline()
1918 	wc->w_handle = handle;  in ocfs2_write_begin_inline()
1935 					  struct ocfs2_write_ctxt *wc)  in ocfs2_try_to_write_inline_data()  argument
1951 		    ocfs2_size_fits_inline_data(wc->w_di_bh, end))  in ocfs2_try_to_write_inline_data()
1958 		ret = ocfs2_convert_inline_data_to_extents(inode, wc->w_di_bh);  in ocfs2_try_to_write_inline_data()
1973 	di = (struct ocfs2_dinode *)wc->w_di_bh->b_data;  in ocfs2_try_to_write_inline_data()
1979 	ret = ocfs2_write_begin_inline(mapping, inode, wc);  in ocfs2_try_to_write_inline_data()
2006 					struct ocfs2_write_ctxt *wc)  in ocfs2_expand_nonsparse_inode()  argument
2020 	wc->w_first_new_cpos =  in ocfs2_expand_nonsparse_inode()
2083 	struct ocfs2_write_ctxt *wc;  in ocfs2_write_begin_nolock()  local
2094 	ret = ocfs2_alloc_write_ctxt(&wc, osb, pos, len, di_bh);  in ocfs2_write_begin_nolock()
2102 						     mmap_page, wc);  in ocfs2_write_begin_nolock()
2117 						   wc);  in ocfs2_write_begin_nolock()
2128 		clusters_need = wc->w_clen;  in ocfs2_write_begin_nolock()
2130 					 wc->w_cpos, wc->w_clen, UINT_MAX);  in ocfs2_write_begin_nolock()
2137 	ret = ocfs2_populate_write_desc(inode, wc, &clusters_to_alloc,  in ocfs2_write_begin_nolock()
2145 	di = (struct ocfs2_dinode *)wc->w_di_bh->b_data;  in ocfs2_write_begin_nolock()
2167 					      wc->w_di_bh);  in ocfs2_write_begin_nolock()
2190 	    (wc->w_clen && (wc->w_desc[0].c_needs_zero ||  in ocfs2_write_begin_nolock()
2191 			    wc->w_desc[wc->w_clen - 1].c_needs_zero)))  in ocfs2_write_begin_nolock()
2196 	ocfs2_set_target_boundaries(osb, wc, pos, len, cluster_of_pages);  in ocfs2_write_begin_nolock()
2205 	wc->w_handle = handle;  in ocfs2_write_begin_nolock()
2214 	ret = ocfs2_journal_access_di(handle, INODE_CACHE(inode), wc->w_di_bh,  in ocfs2_write_begin_nolock()
2226 	ret = ocfs2_grab_pages_for_write(mapping, wc, wc->w_cpos, pos, len,  in ocfs2_write_begin_nolock()
2240 		BUG_ON(wc->w_target_page);  in ocfs2_write_begin_nolock()
2245 	ret = ocfs2_write_cluster_by_desc(mapping, data_ac, meta_ac, wc, pos,  in ocfs2_write_begin_nolock()
2258 	*pagep = wc->w_target_page;  in ocfs2_write_begin_nolock()
2259 	*fsdata = wc;  in ocfs2_write_begin_nolock()
2269 	ocfs2_free_write_ctxt(wc);  in ocfs2_write_begin_nolock()
2344 				   struct ocfs2_write_ctxt *wc)  in ocfs2_write_end_inline()  argument
2349 		if (!PageUptodate(wc->w_target_page)) {  in ocfs2_write_end_inline()
2355 	kaddr = kmap_atomic(wc->w_target_page);  in ocfs2_write_end_inline()
2374 	struct ocfs2_write_ctxt *wc = fsdata;  in ocfs2_write_end_nolock()  local
2375 	struct ocfs2_dinode *di = (struct ocfs2_dinode *)wc->w_di_bh->b_data;  in ocfs2_write_end_nolock()
2376 	handle_t *handle = wc->w_handle;  in ocfs2_write_end_nolock()
2379 	ret = ocfs2_journal_access_di(handle, INODE_CACHE(inode), wc->w_di_bh,  in ocfs2_write_end_nolock()
2388 		ocfs2_write_end_inline(inode, pos, len, &copied, di, wc);  in ocfs2_write_end_nolock()
2393 		if (!PageUptodate(wc->w_target_page))  in ocfs2_write_end_nolock()
2396 		ocfs2_zero_new_buffers(wc->w_target_page, start+copied,  in ocfs2_write_end_nolock()
2399 	flush_dcache_page(wc->w_target_page);  in ocfs2_write_end_nolock()
2401 	for(i = 0; i < wc->w_num_pages; i++) {  in ocfs2_write_end_nolock()
2402 		tmppage = wc->w_pages[i];  in ocfs2_write_end_nolock()
2404 		if (tmppage == wc->w_target_page) {  in ocfs2_write_end_nolock()
2405 			from = wc->w_target_from;  in ocfs2_write_end_nolock()
2406 			to = wc->w_target_to;  in ocfs2_write_end_nolock()
2423 				ocfs2_jbd2_file_inode(wc->w_handle, inode);  in ocfs2_write_end_nolock()
2440 	ocfs2_journal_dirty(handle, wc->w_di_bh);  in ocfs2_write_end_nolock()
2448 	ocfs2_unlock_pages(wc);  in ocfs2_write_end_nolock()
2452 	ocfs2_run_deallocs(osb, &wc->w_dealloc);  in ocfs2_write_end_nolock()
2454 	brelse(wc->w_di_bh);  in ocfs2_write_end_nolock()
2455 	kfree(wc);  in ocfs2_write_end_nolock()