discard_block    2782 fs/ext4/mballoc.c 	ext4_fsblk_t discard_block;
discard_block    2784 fs/ext4/mballoc.c 	discard_block = (EXT4_C2B(EXT4_SB(sb), cluster) +
discard_block    2788 fs/ext4/mballoc.c 			(unsigned long long) discard_block, count);
discard_block    2791 fs/ext4/mballoc.c 			(sector_t)discard_block << (sb->s_blocksize_bits - 9),
discard_block    2795 fs/ext4/mballoc.c 		return sb_issue_discard(sb, discard_block, count, GFP_NOFS, 0);