42 nilfs_mdt_insert_new_block(struct inode *inode, unsigned long block,  in nilfs_mdt_insert_new_block()  argument
44 			   void (*init_block)(struct inode *,  in nilfs_mdt_insert_new_block()  argument
47 	struct nilfs_inode_info *ii = NILFS_I(inode);  in nilfs_mdt_insert_new_block()
63 	memset(kaddr + bh_offset(bh), 0, 1 << inode->i_blkbits);  in nilfs_mdt_insert_new_block()
65 		init_block(inode, bh, kaddr);  in nilfs_mdt_insert_new_block()
71 	nilfs_mdt_mark_dirty(inode);  in nilfs_mdt_insert_new_block()
73 	trace_nilfs2_mdt_insert_new_block(inode, inode->i_ino, block);  in nilfs_mdt_insert_new_block()
78 static int nilfs_mdt_create_block(struct inode *inode, unsigned long block,  in nilfs_mdt_create_block()  argument
80 				  void (*init_block)(struct inode *,  in nilfs_mdt_create_block()  argument
84 	struct super_block *sb = inode->i_sb;  in nilfs_mdt_create_block()
92 	bh = nilfs_grab_buffer(inode, inode->i_mapping, block, 0);  in nilfs_mdt_create_block()
105 	err = nilfs_mdt_insert_new_block(inode, block, bh, init_block);  in nilfs_mdt_create_block()
126 nilfs_mdt_submit_block(struct inode *inode, unsigned long blkoff,  in nilfs_mdt_submit_block()  argument
133 	bh = nilfs_grab_buffer(inode, inode->i_mapping, blkoff, 0);  in nilfs_mdt_submit_block()
154 	ret = nilfs_bmap_lookup(NILFS_I(inode)->i_bmap, blkoff, &blknum);  in nilfs_mdt_submit_block()
159 	map_bh(bh, inode->i_sb, (sector_t)blknum);  in nilfs_mdt_submit_block()
166 	trace_nilfs2_mdt_submit_block(inode, inode->i_ino, blkoff, mode);  in nilfs_mdt_submit_block()
179 static int nilfs_mdt_read_block(struct inode *inode, unsigned long block,  in nilfs_mdt_read_block()  argument
187 	err = nilfs_mdt_submit_block(inode, block, READ, &first_bh);  in nilfs_mdt_read_block()
197 			err = nilfs_mdt_submit_block(inode, blkoff, READA, &bh);  in nilfs_mdt_read_block()
248 int nilfs_mdt_get_block(struct inode *inode, unsigned long blkoff, int create,  in nilfs_mdt_get_block()  argument
249 			void (*init_block)(struct inode *,  in nilfs_mdt_get_block()  argument
257 	ret = nilfs_mdt_read_block(inode, blkoff, !create, out_bh);  in nilfs_mdt_get_block()
261 	ret = nilfs_mdt_create_block(inode, blkoff, out_bh, init_block);  in nilfs_mdt_get_block()
291 int nilfs_mdt_find_block(struct inode *inode, unsigned long start,  in nilfs_mdt_find_block()  argument
301 	ret = nilfs_mdt_read_block(inode, start, true, out_bh);  in nilfs_mdt_find_block()
309 	ret = nilfs_bmap_seek_key(NILFS_I(inode)->i_bmap, start + 1, &next);  in nilfs_mdt_find_block()
312 			ret = nilfs_mdt_read_block(inode, next, true, out_bh);  in nilfs_mdt_find_block()
335 int nilfs_mdt_delete_block(struct inode *inode, unsigned long block)  in nilfs_mdt_delete_block()  argument
337 	struct nilfs_inode_info *ii = NILFS_I(inode);  in nilfs_mdt_delete_block()
342 		nilfs_mdt_mark_dirty(inode);  in nilfs_mdt_delete_block()
343 		nilfs_mdt_forget_block(inode, block);  in nilfs_mdt_delete_block()
363 int nilfs_mdt_forget_block(struct inode *inode, unsigned long block)  in nilfs_mdt_forget_block()  argument
366 		(PAGE_CACHE_SHIFT - inode->i_blkbits);  in nilfs_mdt_forget_block()
372 	page = find_lock_page(inode->i_mapping, index);  in nilfs_mdt_forget_block()
379 		(PAGE_CACHE_SHIFT - inode->i_blkbits);  in nilfs_mdt_forget_block()
391 	    invalidate_inode_pages2_range(inode->i_mapping, index, index) != 0)  in nilfs_mdt_forget_block()
410 int nilfs_mdt_mark_block_dirty(struct inode *inode, unsigned long block)  in nilfs_mdt_mark_block_dirty()  argument
415 	err = nilfs_mdt_read_block(inode, block, 0, &bh);  in nilfs_mdt_mark_block_dirty()
419 	nilfs_mdt_mark_dirty(inode);  in nilfs_mdt_mark_block_dirty()
424 int nilfs_mdt_fetch_dirty(struct inode *inode)  in nilfs_mdt_fetch_dirty()  argument
426 	struct nilfs_inode_info *ii = NILFS_I(inode);  in nilfs_mdt_fetch_dirty()
438 	struct inode *inode = page->mapping->host;  in nilfs_mdt_write_page()  local
442 	if (inode && (inode->i_sb->s_flags & MS_RDONLY)) {  in nilfs_mdt_write_page()
457 	if (!inode)  in nilfs_mdt_write_page()
460 	sb = inode->i_sb;  in nilfs_mdt_write_page()
465 		nilfs_flush_segment(sb, inode->i_ino);  in nilfs_mdt_write_page()
479 int nilfs_mdt_init(struct inode *inode, gfp_t gfp_mask, size_t objsz)  in nilfs_mdt_init()  argument
488 	inode->i_private = mi;  in nilfs_mdt_init()
490 	inode->i_mode = S_IFREG;  in nilfs_mdt_init()
491 	mapping_set_gfp_mask(inode->i_mapping, gfp_mask);  in nilfs_mdt_init()
493 	inode->i_op = &def_mdt_iops;  in nilfs_mdt_init()
494 	inode->i_fop = &def_mdt_fops;  in nilfs_mdt_init()
495 	inode->i_mapping->a_ops = &def_mdt_aops;  in nilfs_mdt_init()
500 void nilfs_mdt_set_entry_size(struct inode *inode, unsigned entry_size,  in nilfs_mdt_set_entry_size()  argument
503 	struct nilfs_mdt_info *mi = NILFS_MDT(inode);  in nilfs_mdt_set_entry_size()
506 	mi->mi_entries_per_block = (1 << inode->i_blkbits) / entry_size;  in nilfs_mdt_set_entry_size()
515 int nilfs_mdt_setup_shadow_map(struct inode *inode,  in nilfs_mdt_setup_shadow_map()  argument
518 	struct nilfs_mdt_info *mi = NILFS_MDT(inode);  in nilfs_mdt_setup_shadow_map()
522 	nilfs_mapping_init(&shadow->frozen_data, inode);  in nilfs_mdt_setup_shadow_map()
524 	nilfs_mapping_init(&shadow->frozen_btnodes, inode);  in nilfs_mdt_setup_shadow_map()
533 int nilfs_mdt_save_to_shadow_map(struct inode *inode)  in nilfs_mdt_save_to_shadow_map()  argument
535 	struct nilfs_mdt_info *mi = NILFS_MDT(inode);  in nilfs_mdt_save_to_shadow_map()
536 	struct nilfs_inode_info *ii = NILFS_I(inode);  in nilfs_mdt_save_to_shadow_map()
540 	ret = nilfs_copy_dirty_pages(&shadow->frozen_data, inode->i_mapping);  in nilfs_mdt_save_to_shadow_map()
554 int nilfs_mdt_freeze_buffer(struct inode *inode, struct buffer_head *bh)  in nilfs_mdt_freeze_buffer()  argument
556 	struct nilfs_shadow_map *shadow = NILFS_MDT(inode)->mi_shadow;  in nilfs_mdt_freeze_buffer()
559 	int blkbits = inode->i_blkbits;  in nilfs_mdt_freeze_buffer()
586 nilfs_mdt_get_frozen_buffer(struct inode *inode, struct buffer_head *bh)  in nilfs_mdt_get_frozen_buffer()  argument
588 	struct nilfs_shadow_map *shadow = NILFS_MDT(inode)->mi_shadow;  in nilfs_mdt_get_frozen_buffer()
596 			n = bh_offset(bh) >> inode->i_blkbits;  in nilfs_mdt_get_frozen_buffer()
622 void nilfs_mdt_restore_from_shadow_map(struct inode *inode)  in nilfs_mdt_restore_from_shadow_map()  argument
624 	struct nilfs_mdt_info *mi = NILFS_MDT(inode);  in nilfs_mdt_restore_from_shadow_map()
625 	struct nilfs_inode_info *ii = NILFS_I(inode);  in nilfs_mdt_restore_from_shadow_map()
631 		nilfs_palloc_clear_cache(inode);  in nilfs_mdt_restore_from_shadow_map()
633 	nilfs_clear_dirty_pages(inode->i_mapping, true);  in nilfs_mdt_restore_from_shadow_map()
634 	nilfs_copy_back_pages(inode->i_mapping, &shadow->frozen_data);  in nilfs_mdt_restore_from_shadow_map()
648 void nilfs_mdt_clear_shadow_map(struct inode *inode)  in nilfs_mdt_clear_shadow_map()  argument
650 	struct nilfs_mdt_info *mi = NILFS_MDT(inode);  in nilfs_mdt_clear_shadow_map()