ext4: replace min/max nesting with clamp()

The clamp() macro explicitly expresses the intent of constraining a value
within bounds.Therefore, replacing max(min(a,b),c) with clamp(val, lo, hi)
can improve code readability.

Signed-off-by: Xichao Zhao <zhao.xichao@vivo.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>

Author: Xichao Zhao

fs/ext4/mmp.c

@@ -231,9 +231,9 @@ static int kmmpd(void *data)
 		 * Adjust the mmp_check_interval depending on how much time
 		 * it took for the MMP block to be written.
 		 */
-		mmp_check_interval = max(min(EXT4_MMP_CHECK_MULT * diff / HZ,
-					     EXT4_MMP_MAX_CHECK_INTERVAL),
-					 EXT4_MMP_MIN_CHECK_INTERVAL);
+		mmp_check_interval = clamp(EXT4_MMP_CHECK_MULT * diff / HZ,
+					   EXT4_MMP_MIN_CHECK_INTERVAL,
+					   EXT4_MMP_MAX_CHECK_INTERVAL);
 		mmp->mmp_check_interval = cpu_to_le16(mmp_check_interval);
 	}