prev_pblk        3598 fs/ext4/extents.c 		ext4_fsblk_t prev_pblk, ee_pblk;
prev_pblk        3604 fs/ext4/extents.c 		prev_pblk = ext4_ext_pblock(abut_ex);
prev_pblk        3618 fs/ext4/extents.c 			((prev_pblk + prev_len) == ee_pblk) &&		/*C3*/