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nilfs2: fix gcc warning at nilfs_checkpoint_is_mounted()

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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 <[email protected]>
Reported-by: David Binderman <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Ryusuke Konishi 2015-04-16 12:46:45 -07:00 • committed by Linus Torvalds
commit 3377f843cf
1 changed files with 1 additions and 1 deletions
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2
fs/nilfs2/super.c
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@ -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))