Commit 68ac8bfb authored by Jeff Mahoney's avatar Jeff Mahoney Committed by Jan Kara

quota: add missing use of dq_data_lock in __dquot_initialize

The bulk of __dquot_initialize runs under the dqptr_sem which
protects the inode->i_dquot pointers. It doesn't protect the
dereferenced contents, though. Those are protected by the
dq_data_lock, which is missing around the dquot_resv_space call.
Signed-off-by: default avatarJeff Mahoney <jeffm@suse.com>
Signed-off-by: default avatarJan Kara <jack@suse.cz>
parent f6161aa1
...@@ -1439,8 +1439,11 @@ static void __dquot_initialize(struct inode *inode, int type) ...@@ -1439,8 +1439,11 @@ static void __dquot_initialize(struct inode *inode, int type)
* did a write before quota was turned on * did a write before quota was turned on
*/ */
rsv = inode_get_rsv_space(inode); rsv = inode_get_rsv_space(inode);
if (unlikely(rsv)) if (unlikely(rsv)) {
spin_lock(&dq_data_lock);
dquot_resv_space(inode->i_dquot[cnt], rsv); dquot_resv_space(inode->i_dquot[cnt], rsv);
spin_unlock(&dq_data_lock);
}
} }
} }
out_err: out_err:
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment