Giuliano Pochini wrote:
> > The point of O_STREAMING is one change: drop pages in the pagecache
> > behind our current position, that are free-able, because we know we will
> > never want them.
> Does it drop pages unconditionally ?
> What happens if I do a
> streaming_cat largedatabase > /dev/null while other processes
> are working on it ?
You'll make your database run really slowly.
> It's not a good thing to remove the whole
> cached data other apps are working on.
Don't do that then ;)
Seriously, there are tons of ways of creating local performance
DoS'es of this form. fsync is an excellent tool for that.
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to email@example.com
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Tue Oct 15 2002 - 22:00:30 EST