31 			   struct buffer_head *bh,  in nilfs_mdt_insert_new_block()  argument
42 	bh->b_blocknr = 0;  in nilfs_mdt_insert_new_block()
44 	ret = nilfs_bmap_insert(ii->i_bmap, block, (unsigned long)bh);  in nilfs_mdt_insert_new_block()
48 	set_buffer_mapped(bh);  in nilfs_mdt_insert_new_block()
50 	kaddr = kmap_atomic(bh->b_page);  in nilfs_mdt_insert_new_block()
51 	memset(kaddr + bh_offset(bh), 0, i_blocksize(inode));  in nilfs_mdt_insert_new_block()
53 		init_block(inode, bh, kaddr);  in nilfs_mdt_insert_new_block()
54 	flush_dcache_page(bh->b_page);  in nilfs_mdt_insert_new_block()
57 	set_buffer_uptodate(bh);  in nilfs_mdt_insert_new_block()
58 	mark_buffer_dirty(bh);  in nilfs_mdt_insert_new_block()
74 	struct buffer_head *bh;  in nilfs_mdt_create_block()  local
80 	bh = nilfs_grab_buffer(inode, inode->i_mapping, block, 0);  in nilfs_mdt_create_block()
81 	if (unlikely(!bh))  in nilfs_mdt_create_block()
85 	if (buffer_uptodate(bh))  in nilfs_mdt_create_block()
88 	wait_on_buffer(bh);  in nilfs_mdt_create_block()
89 	if (buffer_uptodate(bh))  in nilfs_mdt_create_block()
92 	err = nilfs_mdt_insert_new_block(inode, block, bh, init_block);  in nilfs_mdt_create_block()
94 		get_bh(bh);  in nilfs_mdt_create_block()
95 		*out_bh = bh;  in nilfs_mdt_create_block()
99 	unlock_page(bh->b_page);  in nilfs_mdt_create_block()
100 	put_page(bh->b_page);  in nilfs_mdt_create_block()
101 	brelse(bh);  in nilfs_mdt_create_block()
116 	struct buffer_head *bh;  in nilfs_mdt_submit_block()  local
120 	bh = nilfs_grab_buffer(inode, inode->i_mapping, blkoff, 0);  in nilfs_mdt_submit_block()
121 	if (unlikely(!bh))  in nilfs_mdt_submit_block()
125 	if (buffer_uptodate(bh))  in nilfs_mdt_submit_block()
129 		if (!trylock_buffer(bh)) {  in nilfs_mdt_submit_block()
134 		lock_buffer(bh);  in nilfs_mdt_submit_block()
136 	if (buffer_uptodate(bh)) {  in nilfs_mdt_submit_block()
137 		unlock_buffer(bh);  in nilfs_mdt_submit_block()
143 		unlock_buffer(bh);  in nilfs_mdt_submit_block()
146 	map_bh(bh, inode->i_sb, (sector_t)blknum);  in nilfs_mdt_submit_block()
148 	bh->b_end_io = end_buffer_read_sync;  in nilfs_mdt_submit_block()
149 	get_bh(bh);  in nilfs_mdt_submit_block()
150 	submit_bh(opf, bh);  in nilfs_mdt_submit_block()
156 	get_bh(bh);  in nilfs_mdt_submit_block()
157 	*out_bh = bh;  in nilfs_mdt_submit_block()
160 	unlock_page(bh->b_page);  in nilfs_mdt_submit_block()
161 	put_page(bh->b_page);  in nilfs_mdt_submit_block()
162 	brelse(bh);  in nilfs_mdt_submit_block()
170 	struct buffer_head *first_bh, *bh;  in nilfs_mdt_read_block()  local
186 						REQ_OP_READ | REQ_RAHEAD, &bh);  in nilfs_mdt_read_block()
188 				brelse(bh);  in nilfs_mdt_read_block()
374 		struct buffer_head *bh;  in nilfs_mdt_forget_block()  local
376 		bh = nilfs_page_get_nth_block(page, block - first_block);  in nilfs_mdt_forget_block()
377 		nilfs_forget_buffer(bh);  in nilfs_mdt_forget_block()
558 int nilfs_mdt_freeze_buffer(struct inode *inode, struct buffer_head *bh)  in nilfs_mdt_freeze_buffer()  argument
565 	page = grab_cache_page(shadow->inode->i_mapping, bh->b_folio->index);  in nilfs_mdt_freeze_buffer()
572 	bh_frozen = nilfs_page_get_nth_block(page, bh_offset(bh) >> blkbits);  in nilfs_mdt_freeze_buffer()
575 		nilfs_copy_buffer(bh_frozen, bh);  in nilfs_mdt_freeze_buffer()
579 		set_buffer_nilfs_redirected(bh);  in nilfs_mdt_freeze_buffer()
590 nilfs_mdt_get_frozen_buffer(struct inode *inode, struct buffer_head *bh)  in nilfs_mdt_get_frozen_buffer()  argument
597 	page = find_lock_page(shadow->inode->i_mapping, bh->b_folio->index);  in nilfs_mdt_get_frozen_buffer()
600 			n = bh_offset(bh) >> inode->i_blkbits;  in nilfs_mdt_get_frozen_buffer()
612 	struct buffer_head *bh;  in nilfs_release_frozen_buffers()  local
615 		bh = list_first_entry(head, struct buffer_head,  in nilfs_release_frozen_buffers()
617 		list_del_init(&bh->b_assoc_buffers);  in nilfs_release_frozen_buffers()
618 		brelse(bh); /* drop ref-count to make it releasable */  in nilfs_release_frozen_buffers()