1251 static void ocfs2_unlock_pages(struct ocfs2_write_ctxt *wc)  in ocfs2_unlock_pages()  argument
1260 	if (wc->w_target_locked) {  in ocfs2_unlock_pages()
1261 		BUG_ON(!wc->w_target_page);  in ocfs2_unlock_pages()
1262 		for (i = 0; i < wc->w_num_pages; i++) {  in ocfs2_unlock_pages()
1263 			if (wc->w_target_page == wc->w_pages[i]) {  in ocfs2_unlock_pages()
1264 				wc->w_pages[i] = NULL;  in ocfs2_unlock_pages()
1268 		mark_page_accessed(wc->w_target_page);  in ocfs2_unlock_pages()
1269 		page_cache_release(wc->w_target_page);  in ocfs2_unlock_pages()
1271 	ocfs2_unlock_and_free_pages(wc->w_pages, wc->w_num_pages);  in ocfs2_unlock_pages()
1274 static void ocfs2_free_write_ctxt(struct ocfs2_write_ctxt *wc)  in ocfs2_free_write_ctxt()  argument
1276 	ocfs2_unlock_pages(wc);  in ocfs2_free_write_ctxt()
1277 	brelse(wc->w_di_bh);  in ocfs2_free_write_ctxt()
1278 	kfree(wc);  in ocfs2_free_write_ctxt()
1286 	struct ocfs2_write_ctxt *wc;  in ocfs2_alloc_write_ctxt()  local
1288 	wc = kzalloc(sizeof(struct ocfs2_write_ctxt), GFP_NOFS);  in ocfs2_alloc_write_ctxt()
1289 	if (!wc)  in ocfs2_alloc_write_ctxt()
1292 	wc->w_cpos = pos >> osb->s_clustersize_bits;  in ocfs2_alloc_write_ctxt()
1293 	wc->w_first_new_cpos = UINT_MAX;  in ocfs2_alloc_write_ctxt()
1295 	wc->w_clen = cend - wc->w_cpos + 1;  in ocfs2_alloc_write_ctxt()
1297 	wc->w_di_bh = di_bh;  in ocfs2_alloc_write_ctxt()
1300 		wc->w_large_pages = 1;  in ocfs2_alloc_write_ctxt()
1302 		wc->w_large_pages = 0;  in ocfs2_alloc_write_ctxt()
1304 	ocfs2_init_dealloc_ctxt(&wc->w_dealloc);  in ocfs2_alloc_write_ctxt()
1306 	*wcp = wc;  in ocfs2_alloc_write_ctxt()
1357 				struct ocfs2_write_ctxt *wc,  in ocfs2_write_failure()  argument
1365 	ocfs2_zero_new_buffers(wc->w_target_page, from, to);  in ocfs2_write_failure()
1367 	for(i = 0; i < wc->w_num_pages; i++) {  in ocfs2_write_failure()
1368 		tmppage = wc->w_pages[i];  in ocfs2_write_failure()
1372 				ocfs2_jbd2_file_inode(wc->w_handle, inode);  in ocfs2_write_failure()
1380 					struct ocfs2_write_ctxt *wc,  in ocfs2_prepare_page_for_write()  argument
1399 	if (page == wc->w_target_page) {  in ocfs2_prepare_page_for_write()
1464 				      struct ocfs2_write_ctxt *wc,  in ocfs2_grab_pages_for_write()  argument
1484 		wc->w_num_pages = ocfs2_pages_per_cluster(inode->i_sb);  in ocfs2_grab_pages_for_write()
1494 		if ((start + wc->w_num_pages) > end_index)  in ocfs2_grab_pages_for_write()
1495 			wc->w_num_pages = end_index - start;  in ocfs2_grab_pages_for_write()
1497 		wc->w_num_pages = 1;  in ocfs2_grab_pages_for_write()
1501 	for(i = 0; i < wc->w_num_pages; i++) {  in ocfs2_grab_pages_for_write()
1521 			wc->w_pages[i] = mmap_page;  in ocfs2_grab_pages_for_write()
1522 			wc->w_target_locked = true;  in ocfs2_grab_pages_for_write()
1524 			wc->w_pages[i] = find_or_create_page(mapping, index,  in ocfs2_grab_pages_for_write()
1526 			if (!wc->w_pages[i]) {  in ocfs2_grab_pages_for_write()
1532 		wait_for_stable_page(wc->w_pages[i]);  in ocfs2_grab_pages_for_write()
1535 			wc->w_target_page = wc->w_pages[i];  in ocfs2_grab_pages_for_write()
1539 		wc->w_target_locked = false;  in ocfs2_grab_pages_for_write()
1551 			       struct ocfs2_write_ctxt *wc, u32 cpos,  in ocfs2_write_cluster()  argument
1569 					   &tmp_pos, 1, 0, wc->w_di_bh,  in ocfs2_write_cluster()
1570 					   wc->w_handle, data_ac,  in ocfs2_write_cluster()
1590 					      wc->w_di_bh);  in ocfs2_write_cluster()
1592 						wc->w_handle, cpos, 1, phys,  in ocfs2_write_cluster()
1593 						meta_ac, &wc->w_dealloc);  in ocfs2_write_cluster()
1621 	for(i = 0; i < wc->w_num_pages; i++) {  in ocfs2_write_cluster()
1624 		tmpret = ocfs2_prepare_page_for_write(inode, &p_blkno, wc,  in ocfs2_write_cluster()
1625 						      wc->w_pages[i], cpos,  in ocfs2_write_cluster()
1639 		ocfs2_write_failure(inode, wc, user_pos, user_len);  in ocfs2_write_cluster()
1649 				       struct ocfs2_write_ctxt *wc,  in ocfs2_write_cluster_by_desc()  argument
1658 	for (i = 0; i < wc->w_clen; i++) {  in ocfs2_write_cluster_by_desc()
1659 		desc = &wc->w_desc[i];  in ocfs2_write_cluster_by_desc()
1674 					  wc, desc->c_cpos, pos, local_len);  in ocfs2_write_cluster_by_desc()
1695 					struct ocfs2_write_ctxt *wc,  in ocfs2_set_target_boundaries()  argument
1700 	wc->w_target_from = pos & (PAGE_CACHE_SIZE - 1);  in ocfs2_set_target_boundaries()
1701 	wc->w_target_to = wc->w_target_from + len;  in ocfs2_set_target_boundaries()
1715 	if (wc->w_large_pages) {  in ocfs2_set_target_boundaries()
1722 		desc = &wc->w_desc[0];  in ocfs2_set_target_boundaries()
1726 							&wc->w_target_from,  in ocfs2_set_target_boundaries()
1729 		desc = &wc->w_desc[wc->w_clen - 1];  in ocfs2_set_target_boundaries()
1734 							&wc->w_target_to);  in ocfs2_set_target_boundaries()
1736 		wc->w_target_from = 0;  in ocfs2_set_target_boundaries()
1737 		wc->w_target_to = PAGE_CACHE_SIZE;  in ocfs2_set_target_boundaries()
1750 				     struct ocfs2_write_ctxt *wc,  in ocfs2_populate_write_desc()  argument
1764 	for (i = 0; i < wc->w_clen; i++) {  in ocfs2_populate_write_desc()
1765 		desc = &wc->w_desc[i];  in ocfs2_populate_write_desc()
1766 		desc->c_cpos = wc->w_cpos + i;  in ocfs2_populate_write_desc()
1807 		if (desc->c_cpos >= wc->w_first_new_cpos) {  in ocfs2_populate_write_desc()
1834 				    struct ocfs2_write_ctxt *wc)  in ocfs2_write_begin_inline()  argument
1840 	struct ocfs2_dinode *di = (struct ocfs2_dinode *)wc->w_di_bh->b_data;  in ocfs2_write_begin_inline()
1860 	wc->w_pages[0] = wc->w_target_page = page;  in ocfs2_write_begin_inline()
1861 	wc->w_num_pages = 1;  in ocfs2_write_begin_inline()
1863 	ret = ocfs2_journal_access_di(handle, INODE_CACHE(inode), wc->w_di_bh,  in ocfs2_write_begin_inline()
1876 		ret = ocfs2_read_inline_data(inode, page, wc->w_di_bh);  in ocfs2_write_begin_inline()
1884 	wc->w_handle = handle;  in ocfs2_write_begin_inline()
1901 					  struct ocfs2_write_ctxt *wc)  in ocfs2_try_to_write_inline_data()  argument
1917 		    ocfs2_size_fits_inline_data(wc->w_di_bh, end))  in ocfs2_try_to_write_inline_data()
1924 		ret = ocfs2_convert_inline_data_to_extents(inode, wc->w_di_bh);  in ocfs2_try_to_write_inline_data()
1939 	di = (struct ocfs2_dinode *)wc->w_di_bh->b_data;  in ocfs2_try_to_write_inline_data()
1945 	ret = ocfs2_write_begin_inline(mapping, inode, wc);  in ocfs2_try_to_write_inline_data()
1972 					struct ocfs2_write_ctxt *wc)  in ocfs2_expand_nonsparse_inode()  argument
1986 	wc->w_first_new_cpos =  in ocfs2_expand_nonsparse_inode()
2049 	struct ocfs2_write_ctxt *wc;  in ocfs2_write_begin_nolock()  local
2060 	ret = ocfs2_alloc_write_ctxt(&wc, osb, pos, len, di_bh);  in ocfs2_write_begin_nolock()
2068 						     mmap_page, wc);  in ocfs2_write_begin_nolock()
2083 						   wc);  in ocfs2_write_begin_nolock()
2094 		clusters_need = wc->w_clen;  in ocfs2_write_begin_nolock()
2096 					 wc->w_cpos, wc->w_clen, UINT_MAX);  in ocfs2_write_begin_nolock()
2103 	ret = ocfs2_populate_write_desc(inode, wc, &clusters_to_alloc,  in ocfs2_write_begin_nolock()
2111 	di = (struct ocfs2_dinode *)wc->w_di_bh->b_data;  in ocfs2_write_begin_nolock()
2133 					      wc->w_di_bh);  in ocfs2_write_begin_nolock()
2156 	    (wc->w_clen && (wc->w_desc[0].c_needs_zero ||  in ocfs2_write_begin_nolock()
2157 			    wc->w_desc[wc->w_clen - 1].c_needs_zero)))  in ocfs2_write_begin_nolock()
2162 	ocfs2_set_target_boundaries(osb, wc, pos, len, cluster_of_pages);  in ocfs2_write_begin_nolock()
2171 	wc->w_handle = handle;  in ocfs2_write_begin_nolock()
2183 	ret = ocfs2_journal_access_di(handle, INODE_CACHE(inode), wc->w_di_bh,  in ocfs2_write_begin_nolock()
2195 	ret = ocfs2_grab_pages_for_write(mapping, wc, wc->w_cpos, pos, len,  in ocfs2_write_begin_nolock()
2209 		BUG_ON(wc->w_target_page);  in ocfs2_write_begin_nolock()
2214 	ret = ocfs2_write_cluster_by_desc(mapping, data_ac, meta_ac, wc, pos,  in ocfs2_write_begin_nolock()
2227 	*pagep = wc->w_target_page;  in ocfs2_write_begin_nolock()
2228 	*fsdata = wc;  in ocfs2_write_begin_nolock()
2238 	ocfs2_free_write_ctxt(wc);  in ocfs2_write_begin_nolock()
2313 				   struct ocfs2_write_ctxt *wc)  in ocfs2_write_end_inline()  argument
2318 		if (!PageUptodate(wc->w_target_page)) {  in ocfs2_write_end_inline()
2324 	kaddr = kmap_atomic(wc->w_target_page);  in ocfs2_write_end_inline()
2343 	struct ocfs2_write_ctxt *wc = fsdata;  in ocfs2_write_end_nolock()  local
2344 	struct ocfs2_dinode *di = (struct ocfs2_dinode *)wc->w_di_bh->b_data;  in ocfs2_write_end_nolock()
2345 	handle_t *handle = wc->w_handle;  in ocfs2_write_end_nolock()
2349 		ocfs2_write_end_inline(inode, pos, len, &copied, di, wc);  in ocfs2_write_end_nolock()
2354 		if (!PageUptodate(wc->w_target_page))  in ocfs2_write_end_nolock()
2357 		ocfs2_zero_new_buffers(wc->w_target_page, start+copied,  in ocfs2_write_end_nolock()
2360 	flush_dcache_page(wc->w_target_page);  in ocfs2_write_end_nolock()
2362 	for(i = 0; i < wc->w_num_pages; i++) {  in ocfs2_write_end_nolock()
2363 		tmppage = wc->w_pages[i];  in ocfs2_write_end_nolock()
2365 		if (tmppage == wc->w_target_page) {  in ocfs2_write_end_nolock()
2366 			from = wc->w_target_from;  in ocfs2_write_end_nolock()
2367 			to = wc->w_target_to;  in ocfs2_write_end_nolock()
2384 				ocfs2_jbd2_file_inode(wc->w_handle, inode);  in ocfs2_write_end_nolock()
2401 	ocfs2_journal_dirty(handle, wc->w_di_bh);  in ocfs2_write_end_nolock()
2408 	ocfs2_unlock_pages(wc);  in ocfs2_write_end_nolock()
2412 	ocfs2_run_deallocs(osb, &wc->w_dealloc);  in ocfs2_write_end_nolock()
2414 	brelse(wc->w_di_bh);  in ocfs2_write_end_nolock()
2415 	kfree(wc);  in ocfs2_write_end_nolock()