47 	struct buffer_head *bh;  in nilfs_btnode_create_block()  local
49 	bh = nilfs_grab_buffer(inode, btnc, blocknr, 1 << BH_NILFS_Node);  in nilfs_btnode_create_block()
50 	if (unlikely(!bh))  in nilfs_btnode_create_block()
53 	if (unlikely(buffer_mapped(bh) || buffer_uptodate(bh) ||  in nilfs_btnode_create_block()
54 		     buffer_dirty(bh))) {  in nilfs_btnode_create_block()
55 		brelse(bh);  in nilfs_btnode_create_block()
58 	memset(bh->b_data, 0, i_blocksize(inode));  in nilfs_btnode_create_block()
59 	bh->b_bdev = inode->i_sb->s_bdev;  in nilfs_btnode_create_block()
60 	bh->b_blocknr = blocknr;  in nilfs_btnode_create_block()
61 	set_buffer_mapped(bh);  in nilfs_btnode_create_block()
62 	set_buffer_uptodate(bh);  in nilfs_btnode_create_block()
64 	unlock_page(bh->b_page);  in nilfs_btnode_create_block()
65 	page_cache_release(bh->b_page);  in nilfs_btnode_create_block()
66 	return bh;  in nilfs_btnode_create_block()
73 	struct buffer_head *bh;  in nilfs_btnode_submit_block()  local
78 	bh = nilfs_grab_buffer(inode, btnc, blocknr, 1 << BH_NILFS_Node);  in nilfs_btnode_submit_block()
79 	if (unlikely(!bh))  in nilfs_btnode_submit_block()
83 	page = bh->b_page;  in nilfs_btnode_submit_block()
85 	if (buffer_uptodate(bh) || buffer_dirty(bh))  in nilfs_btnode_submit_block()
97 				brelse(bh);  in nilfs_btnode_submit_block()
104 		if (pblocknr != *submit_ptr + 1 || !trylock_buffer(bh)) {  in nilfs_btnode_submit_block()
106 			brelse(bh);  in nilfs_btnode_submit_block()
110 		lock_buffer(bh);  in nilfs_btnode_submit_block()
112 	if (buffer_uptodate(bh)) {  in nilfs_btnode_submit_block()
113 		unlock_buffer(bh);  in nilfs_btnode_submit_block()
117 	set_buffer_mapped(bh);  in nilfs_btnode_submit_block()
118 	bh->b_bdev = inode->i_sb->s_bdev;  in nilfs_btnode_submit_block()
119 	bh->b_blocknr = pblocknr; /* set block address for read */  in nilfs_btnode_submit_block()
120 	bh->b_end_io = end_buffer_read_sync;  in nilfs_btnode_submit_block()
121 	get_bh(bh);  in nilfs_btnode_submit_block()
122 	submit_bh(mode, bh);  in nilfs_btnode_submit_block()
123 	bh->b_blocknr = blocknr; /* set back to the given block address */  in nilfs_btnode_submit_block()
127 	*pbh = bh;  in nilfs_btnode_submit_block()
142 void nilfs_btnode_delete(struct buffer_head *bh)  in nilfs_btnode_delete()  argument
145 	struct page *page = bh->b_page;  in nilfs_btnode_delete()
153 	nilfs_forget_buffer(bh);  in nilfs_btnode_delete()
181 	obh = ctxt->bh;  in nilfs_btnode_prepare_change_key()
243 	struct buffer_head *obh = ctxt->bh, *nbh = ctxt->newbh;  in nilfs_btnode_commit_change_key()
272 		ctxt->bh = nbh;  in nilfs_btnode_commit_change_key()
294 		unlock_page(ctxt->bh->b_page);  in nilfs_btnode_abort_change_key()