41 nilfs_mdt_insert_new_block(struct inode *inode, unsigned long block,  in nilfs_mdt_insert_new_block()  argument
43 			   void (*init_block)(struct inode *,  in nilfs_mdt_insert_new_block()  argument
46 	struct nilfs_inode_info *ii = NILFS_I(inode);  in nilfs_mdt_insert_new_block()
62 	memset(kaddr + bh_offset(bh), 0, 1 << inode->i_blkbits);  in nilfs_mdt_insert_new_block()
64 		init_block(inode, bh, kaddr);  in nilfs_mdt_insert_new_block()
70 	nilfs_mdt_mark_dirty(inode);  in nilfs_mdt_insert_new_block()
74 static int nilfs_mdt_create_block(struct inode *inode, unsigned long block,  in nilfs_mdt_create_block()  argument
76 				  void (*init_block)(struct inode *,  in nilfs_mdt_create_block()  argument
80 	struct super_block *sb = inode->i_sb;  in nilfs_mdt_create_block()
88 	bh = nilfs_grab_buffer(inode, inode->i_mapping, block, 0);  in nilfs_mdt_create_block()
101 	err = nilfs_mdt_insert_new_block(inode, block, bh, init_block);  in nilfs_mdt_create_block()
122 nilfs_mdt_submit_block(struct inode *inode, unsigned long blkoff,  in nilfs_mdt_submit_block()  argument
129 	bh = nilfs_grab_buffer(inode, inode->i_mapping, blkoff, 0);  in nilfs_mdt_submit_block()
150 	ret = nilfs_bmap_lookup(NILFS_I(inode)->i_bmap, blkoff, &blknum);  in nilfs_mdt_submit_block()
155 	map_bh(bh, inode->i_sb, (sector_t)blknum);  in nilfs_mdt_submit_block()
173 static int nilfs_mdt_read_block(struct inode *inode, unsigned long block,  in nilfs_mdt_read_block()  argument
181 	err = nilfs_mdt_submit_block(inode, block, READ, &first_bh);  in nilfs_mdt_read_block()
191 			err = nilfs_mdt_submit_block(inode, blkoff, READA, &bh);  in nilfs_mdt_read_block()
242 int nilfs_mdt_get_block(struct inode *inode, unsigned long blkoff, int create,  in nilfs_mdt_get_block()  argument
243 			void (*init_block)(struct inode *,  in nilfs_mdt_get_block()  argument
251 	ret = nilfs_mdt_read_block(inode, blkoff, !create, out_bh);  in nilfs_mdt_get_block()
255 	ret = nilfs_mdt_create_block(inode, blkoff, out_bh, init_block);  in nilfs_mdt_get_block()
285 int nilfs_mdt_find_block(struct inode *inode, unsigned long start,  in nilfs_mdt_find_block()  argument
295 	ret = nilfs_mdt_read_block(inode, start, true, out_bh);  in nilfs_mdt_find_block()
303 	ret = nilfs_bmap_seek_key(NILFS_I(inode)->i_bmap, start + 1, &next);  in nilfs_mdt_find_block()
306 			ret = nilfs_mdt_read_block(inode, next, true, out_bh);  in nilfs_mdt_find_block()
329 int nilfs_mdt_delete_block(struct inode *inode, unsigned long block)  in nilfs_mdt_delete_block()  argument
331 	struct nilfs_inode_info *ii = NILFS_I(inode);  in nilfs_mdt_delete_block()
336 		nilfs_mdt_mark_dirty(inode);  in nilfs_mdt_delete_block()
337 		nilfs_mdt_forget_block(inode, block);  in nilfs_mdt_delete_block()
357 int nilfs_mdt_forget_block(struct inode *inode, unsigned long block)  in nilfs_mdt_forget_block()  argument
360 		(PAGE_CACHE_SHIFT - inode->i_blkbits);  in nilfs_mdt_forget_block()
366 	page = find_lock_page(inode->i_mapping, index);  in nilfs_mdt_forget_block()
373 		(PAGE_CACHE_SHIFT - inode->i_blkbits);  in nilfs_mdt_forget_block()
385 	    invalidate_inode_pages2_range(inode->i_mapping, index, index) != 0)  in nilfs_mdt_forget_block()
404 int nilfs_mdt_mark_block_dirty(struct inode *inode, unsigned long block)  in nilfs_mdt_mark_block_dirty()  argument
409 	err = nilfs_mdt_read_block(inode, block, 0, &bh);  in nilfs_mdt_mark_block_dirty()
413 	nilfs_mdt_mark_dirty(inode);  in nilfs_mdt_mark_block_dirty()
418 int nilfs_mdt_fetch_dirty(struct inode *inode)  in nilfs_mdt_fetch_dirty()  argument
420 	struct nilfs_inode_info *ii = NILFS_I(inode);  in nilfs_mdt_fetch_dirty()
432 	struct inode *inode = page->mapping->host;  in nilfs_mdt_write_page()  local
436 	if (inode && (inode->i_sb->s_flags & MS_RDONLY)) {  in nilfs_mdt_write_page()
451 	if (!inode)  in nilfs_mdt_write_page()
454 	sb = inode->i_sb;  in nilfs_mdt_write_page()
459 		nilfs_flush_segment(sb, inode->i_ino);  in nilfs_mdt_write_page()
473 int nilfs_mdt_init(struct inode *inode, gfp_t gfp_mask, size_t objsz)  in nilfs_mdt_init()  argument
482 	inode->i_private = mi;  in nilfs_mdt_init()
484 	inode->i_mode = S_IFREG;  in nilfs_mdt_init()
485 	mapping_set_gfp_mask(inode->i_mapping, gfp_mask);  in nilfs_mdt_init()
487 	inode->i_op = &def_mdt_iops;  in nilfs_mdt_init()
488 	inode->i_fop = &def_mdt_fops;  in nilfs_mdt_init()
489 	inode->i_mapping->a_ops = &def_mdt_aops;  in nilfs_mdt_init()
494 void nilfs_mdt_set_entry_size(struct inode *inode, unsigned entry_size,  in nilfs_mdt_set_entry_size()  argument
497 	struct nilfs_mdt_info *mi = NILFS_MDT(inode);  in nilfs_mdt_set_entry_size()
500 	mi->mi_entries_per_block = (1 << inode->i_blkbits) / entry_size;  in nilfs_mdt_set_entry_size()
509 int nilfs_mdt_setup_shadow_map(struct inode *inode,  in nilfs_mdt_setup_shadow_map()  argument
512 	struct nilfs_mdt_info *mi = NILFS_MDT(inode);  in nilfs_mdt_setup_shadow_map()
516 	nilfs_mapping_init(&shadow->frozen_data, inode);  in nilfs_mdt_setup_shadow_map()
518 	nilfs_mapping_init(&shadow->frozen_btnodes, inode);  in nilfs_mdt_setup_shadow_map()
527 int nilfs_mdt_save_to_shadow_map(struct inode *inode)  in nilfs_mdt_save_to_shadow_map()  argument
529 	struct nilfs_mdt_info *mi = NILFS_MDT(inode);  in nilfs_mdt_save_to_shadow_map()
530 	struct nilfs_inode_info *ii = NILFS_I(inode);  in nilfs_mdt_save_to_shadow_map()
534 	ret = nilfs_copy_dirty_pages(&shadow->frozen_data, inode->i_mapping);  in nilfs_mdt_save_to_shadow_map()
548 int nilfs_mdt_freeze_buffer(struct inode *inode, struct buffer_head *bh)  in nilfs_mdt_freeze_buffer()  argument
550 	struct nilfs_shadow_map *shadow = NILFS_MDT(inode)->mi_shadow;  in nilfs_mdt_freeze_buffer()
553 	int blkbits = inode->i_blkbits;  in nilfs_mdt_freeze_buffer()
580 nilfs_mdt_get_frozen_buffer(struct inode *inode, struct buffer_head *bh)  in nilfs_mdt_get_frozen_buffer()  argument
582 	struct nilfs_shadow_map *shadow = NILFS_MDT(inode)->mi_shadow;  in nilfs_mdt_get_frozen_buffer()
590 			n = bh_offset(bh) >> inode->i_blkbits;  in nilfs_mdt_get_frozen_buffer()
616 void nilfs_mdt_restore_from_shadow_map(struct inode *inode)  in nilfs_mdt_restore_from_shadow_map()  argument
618 	struct nilfs_mdt_info *mi = NILFS_MDT(inode);  in nilfs_mdt_restore_from_shadow_map()
619 	struct nilfs_inode_info *ii = NILFS_I(inode);  in nilfs_mdt_restore_from_shadow_map()
625 		nilfs_palloc_clear_cache(inode);  in nilfs_mdt_restore_from_shadow_map()
627 	nilfs_clear_dirty_pages(inode->i_mapping, true);  in nilfs_mdt_restore_from_shadow_map()
628 	nilfs_copy_back_pages(inode->i_mapping, &shadow->frozen_data);  in nilfs_mdt_restore_from_shadow_map()
642 void nilfs_mdt_clear_shadow_map(struct inode *inode)  in nilfs_mdt_clear_shadow_map()  argument
644 	struct nilfs_mdt_info *mi = NILFS_MDT(inode);  in nilfs_mdt_clear_shadow_map()