On Mon, 11 Dec 2006, Chuck Ebbert wrote: > > Prevent oops when an app tries to create a pipe while pipefs > is not mounted.
Have you actually seen this, or is this just from looking at code? Quite frankly, if "pipe_mnt" is ever NULL, we're dead for lots of other reasons. In fact, pipe_mnt can't be NULL. The way it is initialized is: pipe_mnt = kern_mount(&pipe_fs_type); and pipe_mnt doesn't even return NULL - it returns an error pointer, so if "kern_mount()" were to have failed, pipe_mnt will be some random invalid pointer that could only be tested with IS_ERR(), not by comparing against NULL. But more fundamentally - we might as well oops. We need to panic or oops or do _something_ bad at some point anyway, because it's MUCH better to fail spectacularly than it would be to just silently fail without a pipe. Hmm? Linus - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/