ext_block_hdr
neh = ext_block_hdr(bh);
neh = ext_block_hdr(bh);
neh = ext_block_hdr(bh);
eh = ext_block_hdr(bh);
eh = ext_block_hdr(bh);
ext4_extent_block_csum_set(inode, ext_block_hdr(path->p_bh));
path[depth].p_hdr = ext_block_hdr(path[depth].p_bh);
path[i].p_hdr = ext_block_hdr(path[i].p_bh);
err = __ext4_ext_check(function, line, inode, ext_block_hdr(bh),
struct ext4_extent_header *eh = ext_block_hdr(bh);
path[i].p_hdr = ext_block_hdr(bh);
eh = ext_block_hdr(bh);