From: Ryusuke Konishi Date: Thu, 16 Apr 2015 19:46:45 +0000 (-0700) Subject: nilfs2: fix gcc warning at nilfs_checkpoint_is_mounted() X-Git-Tag: firefly_0821_release~176^2~1948^2~61 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=3377f843cf80e33d63f1a3ded67fd129a298c6b0;p=firefly-linux-kernel-4.4.55.git nilfs2: fix gcc warning at nilfs_checkpoint_is_mounted() Fix the following build warning: fs/nilfs2/super.c: In function 'nilfs_checkpoint_is_mounted': fs/nilfs2/super.c:1023:10: warning: comparison of unsigned expression < 0 is always false [-Wtype-limits] if (cno < 0 || cno > nilfs->ns_cno) ^ This warning indicates that the comparision "cno < 0" is useless because variable "cno" has an unsigned integer type "__u64". Signed-off-by: Ryusuke Konishi Reported-by: David Binderman Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/fs/nilfs2/super.c b/fs/nilfs2/super.c index 5bc2a1cf73c3..c1725f20a9d1 100644 --- a/fs/nilfs2/super.c +++ b/fs/nilfs2/super.c @@ -1020,7 +1020,7 @@ int nilfs_checkpoint_is_mounted(struct super_block *sb, __u64 cno) struct dentry *dentry; int ret; - if (cno < 0 || cno > nilfs->ns_cno) + if (cno > nilfs->ns_cno) return false; if (cno >= nilfs_last_cno(nilfs))