diff --git a/fs/btrfs/bio.h b/fs/btrfs/bio.h
index 00883aea55d7..3cc0fe23898f 100644
--- a/fs/btrfs/bio.h
+++ b/fs/btrfs/bio.h
@@ -18,13 +18,6 @@ struct btrfs_inode;
 
 #define BTRFS_BIO_INLINE_CSUM_SIZE	64
 
-/*
- * Maximum number of sectors for a single bio to limit the size of the
- * checksum array.  This matches the number of bio_vecs per bio and thus the
- * I/O size for buffered I/O.
- */
-#define BTRFS_MAX_BIO_SECTORS		(256)
-
 typedef void (*btrfs_bio_end_io_t)(struct btrfs_bio *bbio);
 
 /*
diff --git a/fs/btrfs/direct-io.c b/fs/btrfs/direct-io.c
index 802d4dbe5b38..db0191567b8d 100644
--- a/fs/btrfs/direct-io.c
+++ b/fs/btrfs/direct-io.c
@@ -385,7 +385,7 @@ static int btrfs_dio_iomap_begin(struct inode *inode, loff_t start,
 	 * to allocate a contiguous array for the checksums.
 	 */
 	if (!write)
-		len = min_t(u64, len, fs_info->sectorsize * BTRFS_MAX_BIO_SECTORS);
+		len = min_t(u64, len, fs_info->sectorsize * BIO_MAX_VECS);
 
 	lockstart = start;
 	lockend = start + len - 1;