Messages in this thread | | | Subject | Re: no way to swapoff a deleted swap file? | From | Peter Zijlstra <> | Date | Thu, 16 Oct 2008 10:28:04 +0200 |
| |
On Wed, 2008-10-15 at 17:21 -0300, Peter Cordes wrote: > I unlinked a swapfile without realizing I was still swapping on it. > Now my /proc/swaps looks like this: > Filename Type Size Used Priority > /var/tmp/EXP/cache/swap/1\040(deleted) file 1288644 1448 -1 > /var/tmp/EXP/cache/swap/2\040(deleted) file 1433368 0 -2 > > AFAICT, there's nothing I can pass to swapoff(2) that will make the > kernel let go of them. If that's the case, please consider this a > feature request for a way to do this. Now I'm going to have to reboot > before I can mkfs that partition. > > If kswapd0 had a fd open on the swap files, swapoff /proc/$PID/fd/3 > could possibly work. But it looks like the files are open but with no > user-space accessable file descriptors to them. Which makes sense, > except for this case.
Right, except that kswapd is per node, so we'd either have to add it to all kswapd instances or a random one. Also, kthreads don't seem to have a files table afaict.
But yes, I see your problem and it makes sense to look for a nice solution.
| |