1 files changed, 6 insertions, 0 deletions

diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 3dbc56eb4849..28896655ad41 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -2686,6 +2686,12 @@ extern int ext4_check_blockref(const char *, unsigned int,
 struct ext4_ext_path;
 struct ext4_extent;
 
+/*
+ * Maximum number of logical blocks in a file; ext4_extent's ee_block is
+ * __le32.
+ */
+#define EXT_MAX_BLOCKS  0xffffffff
+
 extern int ext4_ext_tree_init(handle_t *handle, struct inode *);
 extern int ext4_ext_writepage_trans_blocks(struct inode *, int);
 extern int ext4_ext_index_trans_blocks(struct inode *inode, int extents);