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Diffstat (limited to 'fs/ext4/super.c')
-rw-r--r--fs/ext4/super.c25
1 files changed, 23 insertions, 2 deletions
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 539297515896..7ebd9f040b16 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -5028,6 +5028,20 @@ static int ext4_quota_on_mount(struct super_block *sb, int type)
EXT4_SB(sb)->s_jquota_fmt, type);
}
+static void lockdep_set_quota_inode(struct inode *inode, int subclass)
+{
+ struct ext4_inode_info *ei = EXT4_I(inode);
+
+ /* The first argument of lockdep_set_subclass has to be
+ * *exactly* the same as the argument to init_rwsem() --- in
+ * this case, in init_once() --- or lockdep gets unhappy
+ * because the name of the lock is set using the
+ * stringification of the argument to init_rwsem().
+ */
+ (void) ei; /* shut up clang warning if !CONFIG_LOCKDEP */
+ lockdep_set_subclass(&ei->i_data_sem, subclass);
+}
+
/*
* Standard function to be called on quota_on
*/
@@ -5067,8 +5081,12 @@ static int ext4_quota_on(struct super_block *sb, int type, int format_id,
if (err)
return err;
}
-
- return dquot_quota_on(sb, type, format_id, path);
+ lockdep_set_quota_inode(path->dentry->d_inode, I_DATA_SEM_QUOTA);
+ err = dquot_quota_on(sb, type, format_id, path);
+ if (err)
+ lockdep_set_quota_inode(path->dentry->d_inode,
+ I_DATA_SEM_NORMAL);
+ return err;
}
static int ext4_quota_enable(struct super_block *sb, int type, int format_id,
@@ -5095,8 +5113,11 @@ static int ext4_quota_enable(struct super_block *sb, int type, int format_id,
/* Don't account quota for quota files to avoid recursion */
qf_inode->i_flags |= S_NOQUOTA;
+ lockdep_set_quota_inode(qf_inode, I_DATA_SEM_QUOTA);
err = dquot_enable(qf_inode, type, format_id, flags);
iput(qf_inode);
+ if (err)
+ lockdep_set_quota_inode(qf_inode, I_DATA_SEM_NORMAL);
return err;
}