[PATCH 4.19 093/148] fs/quota: erase unused but set variable warning

Sasha Levin
2024-03-24T23:52:02Z

From: Jiang Biao <benbjiang@tencent.com>

[ Upstream commit 78bc3334a69ff289dbc973a9db7c52a2d7757e5b ]

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>
Stable-dep-of: 179b8c97ebf6 ("quota: Fix rcu annotations of inode dquot pointers")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/quota/dquot.c | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c
index 683727c5758c0..b55d91d3d87c2 100644
--- a/fs/quota/dquot.c
+++ b/fs/quota/dquot.c
@@ -1129,7 +1129,9 @@ 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) {
@@ -1141,8 +1143,10 @@ 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);
--
2.43.0