#define EXT_MAX_EXTENT(__hdr__) \
((le16_to_cpu((__hdr__)->eh_max)) ? \
((EXT_FIRST_EXTENT((__hdr__)) + le16_to_cpu((__hdr__)->eh_max) - 1)) \
- : 0)
+ : NULL)
#define EXT_MAX_INDEX(__hdr__) \
((le16_to_cpu((__hdr__)->eh_max)) ? \
- ((EXT_FIRST_INDEX((__hdr__)) + le16_to_cpu((__hdr__)->eh_max) - 1)) : 0)
+ ((EXT_FIRST_INDEX((__hdr__)) + le16_to_cpu((__hdr__)->eh_max) - 1)) \
+ : NULL)
static inline struct ext4_extent_header *ext_inode_hdr(struct inode *inode)
{