Re: [PATCH 2/6] audit: Fix possible spurious -ENOSPC error

When an inode is tagged with a tree, tag_chunk() checks whether there is audit_tree_group mark attached to the inode and adds one if not. However nothing protects another tag_chunk() to add the mark between we've checked and try to add the fsnotify mark thus resulting in an error from fsnotify_add_mark() and consequently an ENOSPC error from tag_chunk(). Fix the problem by holding mark_mutex over the whole check-insert code sequence. Signed-off-by: Jan Kara <jack(a)suse.cz&gt; ---