> I've been told that the problem is that RAID1 and RAID5 make_request()
> use kmalloc() and can therefore deadlock if a swap is needed to complete
> the malloc during swapping.
>
> However, RAID0 does not malloc at all, so I can assume that its not
> affected. Can I suggest Pavel's documentation patch then be changed to
> specify that its only RAID 1 and 5 that cannot be used for swapping?
Well - as there's no need to use RAID0 (and you knew that), I do not
see urgent need for your change. But yes I updated my home tree, and
if Linus will not accept the patch, my next tries will go with update
similar to yours.
Pavel
> Suggested...
>
>
> @@ -1113,6 +1119,8 @@
~ you need to change his number to 11 ;-)
> Software-RAID mini-HOWTO, available via FTP (user: anonymous) from
> ftp://metalab.unc.edu/pub/Linux/docs/HOWTO/mini. There you will also
> learn where to get the supporting user space utilities raidtools.
> +
> + It is very bad idea to swap onto a RAID 1 or 5 device. Swapping over
> + RAID 0 does work, however it may be easier to just add seperate swap
> + partitions with equal priorities and let the kernel handle the
> + balancing.
>
> If unsure, say N.
-- I'm really pavel@ucw.cz. Look at http://195.113.31.123/~pavel. Pavel Hi! I'm a .signature virus! Copy me into your ~/.signature, please!- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/