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SubjectRe: Request: I/O request recording
Bart Samwel <bart@samwel.tk> wrote:
>
> 2. Swapfiles apparently don't like to be touched. I did an
> ioctl(FIGETBSZ) on a swapfile, and it would simply block until I did a
> swapoff on the file. I didn't even get to the FIBMAP part. :( Is this
> correct behaviour?

yup.

> And is there any way to detect this so that I can work around it?

swapoff -a beforehand, I guess.
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