quota: remove unnecessary error code translation in dquot_quota_enable

Simply set error code to -EEXIST when quota limit is already enabled in
dquot_quota_enable to remove unnecessary error code translation.

Link: https://patch.msgid.link/20240715130534.2112678-5-shikemeng@huaweicloud.com
Signed-off-by: Kemeng Shi <shikemeng@huaweicloud.com>
Signed-off-by: Jan Kara <jack@suse.cz>

diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c
index 156bdd570ef639856c6cbec46adde8db6865c923..30496367d5814d0fb047d85b29d1c4628942ff83 100644 (file)
--- a/fs/quota/dquot.c
+++ b/fs/quota/dquot.c
@@ -2594,7 +2594,8 @@ static int dquot_quota_enable(struct super_block *sb, unsigned int flags)
                        goto out_err;
                }
                if (sb_has_quota_limits_enabled(sb, type)) {
-                       ret = -EBUSY;
+                       /* compatible with XFS */
+                       ret = -EEXIST;
                        goto out_err;
                }
                spin_lock(&dq_state_lock);
@@ -2608,9 +2609,6 @@ out_err:
                if (flags & qtype_enforce_flag(type))
                        dquot_disable(sb, type, DQUOT_LIMITS_ENABLED);
        }
-       /* Error code translation for better compatibility with XFS */
-       if (ret == -EBUSY)
-               ret = -EEXIST;
        return ret;
 }