btrfs: rename err to ret in calc_pct_ratio()

Unify naming of return value to the preferred way.

Reviewed-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/fs/btrfs/space-info.c b/fs/btrfs/space-info.c
index 23685d6e8cbc4c42d27ab454dd0db6fce3a129b3..517916004f212b8272aba631b64ef58e709a731e 100644 (file)
--- a/fs/btrfs/space-info.c
+++ b/fs/btrfs/space-info.c
@@ -1973,13 +1973,13 @@ u64 btrfs_account_ro_block_groups_free_space(struct btrfs_space_info *sinfo)
 
 static u64 calc_pct_ratio(u64 x, u64 y)
 {
-       int err;
+       int ret;
 
        if (!y)
                return 0;
 again:
-       err = check_mul_overflow(100, x, &x);
-       if (err)
+       ret = check_mul_overflow(100, x, &x);
+       if (ret)
                goto lose_precision;
        return div64_u64(x, y);
 lose_precision: