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-rw-r--r--fs/ext4/ext4_extents.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/ext4/ext4_extents.h b/fs/ext4/ext4_extents.h
index 9538633879d7..61652f1d15e6 100644
--- a/fs/ext4/ext4_extents.h
+++ b/fs/ext4/ext4_extents.h
@@ -137,6 +137,7 @@ typedef int (*ext_prepare_callback)(struct inode *, struct ext4_ext_path *,
#define EXT_BREAK 1
#define EXT_REPEAT 2
+/* Maximum logical block in a file; ext4_extent's ee_block is __le32 */
#define EXT_MAX_BLOCK 0xffffffff
/*