fs: pack struct kstat better

Move the change_cookie and subvol up to avoid two 4 byte holes.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Author: Christoph Hellwig

include/linux/stat.h

@@ -50,11 +50,11 @@ struct kstat {
 	struct timespec64 btime;			/* File creation time */
 	u64		blocks;
 	u64		mnt_id;
+	u64		change_cookie;
+	u64		subvol;
 	u32		dio_mem_align;
 	u32		dio_offset_align;
 	u32		dio_read_offset_align;
-	u64		change_cookie;
-	u64		subvol;
 	u32		atomic_write_unit_min;
 	u32		atomic_write_unit_max;
 	u32		atomic_write_segments_max;