ext4: convert DAX reads to iomap infrastructure
Implement basic iomap_begin function that handles reading and use it for
DAX reads.
Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index bdf1e5e..da82de650 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -3266,6 +3266,8 @@ static inline bool ext4_aligned_io(struct inode *inode, loff_t off, loff_t len)
return IS_ALIGNED(off, blksize) && IS_ALIGNED(len, blksize);
}
+extern struct iomap_ops ext4_iomap_ops;
+
#endif /* __KERNEL__ */
#define EFSBADCRC EBADMSG /* Bad CRC detected */
