fs/quota: erase unused but set variable warning

Local variable *reserved* of remove_dquot_ref() is only used if
define CONFIG_QUOTA_DEBUG, but not ebraced in CONFIG_QUOTA_DEBUG
macro, which leads to unused-but-set-variable warning when compiling.

This patch ebrace it into CONFIG_QUOTA_DEBUG macro like what is done
in add_dquot_ref().

Signed-off-by: Jiang Biao <benbjiang@tencent.com>
Signed-off-by: Jan Kara <jack@suse.cz>

1 files changed, 4 insertions, 0 deletions

diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c
index d2f2972b33db..67e534dbfc0e 100644
--- a/fs/quota/dquot.c
+++ b/fs/quota/dquot.c
@@ -1050,7 +1050,9 @@ static void remove_dquot_ref(struct super_block *sb, int type,
                 struct list_head *tofree_head)
 {
         struct inode *inode;
+#ifdef CONFIG_QUOTA_DEBUG
         int reserved = 0;
+#endif
 
         spin_lock(&sb->s_inode_list_lock);
         list_for_each_entry(inode, &sb->s_inodes, i_sb_list) {
@@ -1062,8 +1064,10 @@ static void remove_dquot_ref(struct super_block *sb, int type,
                  */
                 spin_lock(&dq_data_lock);
                 if (!IS_NOQUOTA(inode)) {
+#ifdef CONFIG_QUOTA_DEBUG
                         if (unlikely(inode_get_rsv_space(inode) > 0))
                                 reserved = 1;
+#endif
                         remove_inode_dquot_ref(inode, type, tofree_head);
                 }
                 spin_unlock(&dq_data_lock);