X-Git-Url: https://git.kernel.dk/?a=blobdiff_plain;f=fs%2Fioctl.c;h=7b17a14396ff792152ae6da49d178355d5a5e7ea;hb=7ca263cdf8cf74d0f1c6f48d07d556de92e3bec9;hp=5612880fcbe7d7436f3579c7c1add7360170e407;hpb=fc8e1ead9314cf0e0f1922e661428b93d3a50d88;p=linux-block.git

diff --git a/fs/ioctl.c b/fs/ioctl.c
index 5612880fcbe7..7b17a14396ff 100644
--- a/fs/ioctl.c
+++ b/fs/ioctl.c
@@ -162,20 +162,21 @@ EXPORT_SYMBOL(fiemap_check_flags);
 static int fiemap_check_ranges(struct super_block *sb,
 			       u64 start, u64 len, u64 *new_len)
 {
+	u64 maxbytes = (u64) sb->s_maxbytes;
+
 	*new_len = len;
 
 	if (len == 0)
 		return -EINVAL;
 
-	if (start > sb->s_maxbytes)
+	if (start > maxbytes)
 		return -EFBIG;
 
 	/*
 	 * Shrink request scope to what the fs can actually handle.
 	 */
-	if ((len > sb->s_maxbytes) ||
-	    (sb->s_maxbytes - len) < start)
-		*new_len = sb->s_maxbytes - start;
+	if (len > maxbytes || (maxbytes - len) < start)
+		*new_len = maxbytes - start;
 
 	return 0;
 }