> Commit a7a20d10 "[SCSI] sd: limit the scope of the async probe domain" > introduces a boot regression by moving sd probe work off of the global > async queue. Using a local async domain hides the probe work from being > synchronized by wait_for_device_probe()->async_synchronize_full(). > > Fix this by teaching async_synchronize_full() to flush all async work > regardless of domain, and take the opportunity to convert scsi scanning > to async_schedule(). This enables wait_for_device_probe() to flush scsi > scanning work. > > Changes since v1: http://marc.info/?l=linux-scsi&m=133793153025832&w=2 > > 1/ Tested to fix the boot hang that Meelis reported with v1. Reworked > async_synchronize_full() to walk through all the active domains, > otherwise we spin on !list_empty(async_domains) and prevent the async > context from running. > > 2/ Added the ability for domains to opt-out of global syncing as > requested by Arjan, but also needed for domains that don't want to worry > about list corruption when the domain goes out of scope (stack-allocated > domains). Tested successfully on my Netra X1 where the original problem happened, on top of 3.4.0-08215-g1e2aec8. Thank you! -- Meelis Roos (mroos@xxxxxxxx) -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
