Divacky Roman wrote:
hi
[snip]
is my analysis correct? if so, can the race be mitigated by moving the flag setting (hence also the locking) after the msleep()?
No. When the wakeup is performed, the VPO_SWAPINPROG flag is also cleared. Both operations occur in the I/O completion handler with the object locked. Thus, if the I/O completion handler runs first, the msleep on the page within the while loop will not occur because the page's VPO_SWAPINPROG flag is already cleared.
Regards, Alan _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "[EMAIL PROTECTED]"
