Messages in this thread |  | | Date | Tue, 12 Sep 2000 14:33:51 -0300 (BRST) | From | Rik van Riel <> | Subject | (reiserfs) Re: More on 2.2.18pre2aa2 |
| |
On Tue, 12 Sep 2000, Andrea Arcangeli wrote: > On Tue, 12 Sep 2000, Rik van Riel wrote: > > >Also, this possibility is /extremely/ remote, if not > >impossible. Well, it could happen at one point in time, > > It's not impossible. Think when you run a backup of you home > directory while you're listening mp3. Both `tar` and `xmms` will > read the same file that is out of cache. > > `tar` will be the first one who will read the next out-of-cache > data-page of the file. The I/O will be so issued with low prio > but then, as soon as `tar` has issued the read I/O, also `xmms` > will wait on the same page and it will skip the next deadline > because the I/O is been issued with low prio.
Indeed, this could be an issue...
> To make it work right is not simple.
I don't know if we really have to care about this case. The process queueing the IO is more than likely a good guess, and a good guess is (IMHO) better than not guessing at all and hoping things will be ok.
regards,
Rik -- "What you're running that piece of shit Gnome?!?!" -- Miguel de Icaza, UKUUG 2000
http://www.conectiva.com/ http://www.surriel.com/
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/
|  |