Hi Ryan,
On 10/8/07, Ryan Finnie <[email protected]> wrote:
> Doesn't appear to be enough. I can't figure out why (since it appears
> write_cache_pages bubbles up directly to sys_msync), but with that
> patch applied, in my test case[1], msync returns -1 EIO. However,
> with the exact same kernel without that patch applied, msync returns
> 524288 (AOP_WRITEPAGE_ACTIVATE). But as your patch specifically flips
> 524288 to 0, I can't figure out how it eventually returns -1 EIO.
>
> [1] "apt-get check" on a unionfs2 mount backed by tmpfs over cdrom,
> standard livecd setup
You have swap device disabled, right? If so, I can't see any reason
why msync(2) on tmpfs would return -EIO. Can you please send a strace
log for your test case?
Pekka
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