1 files changed, 10 insertions, 0 deletions

diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index e14d22c170d5..fb1e191d0fa9 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -3574,6 +3574,7 @@ static int ext4_remount(struct super_block *sb, int *flags, char *data)
         ext4_fsblk_t n_blocks_count = 0;
         unsigned long old_sb_flags;
         struct ext4_mount_options old_opts;
+        int enable_quota = 0;
         ext4_group_t g;
         unsigned int journal_ioprio = DEFAULT_JOURNAL_IOPRIO;
         int err;
@@ -3630,6 +3631,12 @@ static int ext4_remount(struct super_block *sb, int *flags, char *data)
                 }
 
                 if (*flags & MS_RDONLY) {
+                        err = vfs_dq_off(sb, 1);
+                        if (err < 0 && err != -ENOSYS) {
+                                err = -EBUSY;
+                                goto restore_opts;
+                        }
+
                         /*
                          * First of all, the unconditional stuff we have to do
                          * to disable replay of the journal when we next remount
@@ -3698,6 +3705,7 @@ static int ext4_remount(struct super_block *sb, int *flags, char *data)
                                 goto restore_opts;
                         if (!ext4_setup_super(sb, es, 0))
                                 sb->s_flags &= ~MS_RDONLY;
+                        enable_quota = 1;
                 }
         }
         ext4_setup_system_zone(sb);
@@ -3713,6 +3721,8 @@ static int ext4_remount(struct super_block *sb, int *flags, char *data)
 #endif
         unlock_super(sb);
         unlock_kernel();
+        if (enable_quota)
+                vfs_dq_quota_on_remount(sb);
         return 0;
 
 restore_opts: