Il 11/03/2013 06:09, Asias He ha scritto: > This patch makes vhost_scsi_flush() wait for all the pending requests > issued before the flush operation to be finished.
There is no protection against issuing concurrent flush operations. If we later would like to make the flush a ioctl (for example for migration purposes), it would be confusing, and I'm not sure how you could extend the during_flush machinery. What about making vhost_scsi_flush() wait for all pending requests, including those issues during the flush operation? Then you can easily support concurrent flushes; just add a waitqueue and wake_up_all at the end of the flush operation. BTW, adding such a ioctl as part of this patch would probably be a good thing to do anyway. Paolo _______________________________________________ Virtualization mailing list [email protected] https://lists.linuxfoundation.org/mailman/listinfo/virtualization
