With this change, you may see:
lock order reversal
1st 0xc24aab90 vm object (vm object) @ vm/swap_pager.c:1319
2nd 0xc070f180 swap_pager swhash (swap_pager swhash) @ vm/swap_pager.c:1832
3rd 0xc1036b90 vm object (vm object) @ vm/uma_core.c:876
This is also a false positive. The only vm object that is locked
after acquiring the "swap_pager swhash" mutex is one used internally
in UMA. We will never acquire this vm object's mutex followed by
the "swap_pager swhash" mutex.
Regards,
Alan
On Sun, Oct 26, 2003 at 11:55:35AM -0800, Alan Cox wrote:
> alc 2003/10/26 11:55:35 PST
>
> FreeBSD src repository
>
> Modified files:
> sys/vm swap_pager.c
> Log:
> - Introduce and use a mutex synchronizing access to the swblock hash table.
>
> Revision Changes Path
> 1.234 +20 -4 src/sys/vm/swap_pager.c