On Tue, May 12, 2015 at 09:25:30AM +0000, Nicholas A. Bellinger wrote: > From: Nicholas Bellinger <nab@xxxxxxxxxxxxxxx> > > This patch converts se_dev_entry->pr_ref_count access to use modern > struct kref counting. > > It updates core_enable_device_list_for_node() to kref_init() when se_dev_entry > is being enabled, and updates core_disable_device_list_for_node() to kref_put() > and blocks on ->pr_comp waiting for outstanding PR references to drop. > > Also, go ahead and convert core_get_se_deve_from_rtpi() code to use pr_kref > for RELATIVE TARGET PORT IDENTIFIER lookup. This seems to be two very different things. Once a fix up of the ->se_deve access in the PR code, and second changing the way the references work. The kref change looks fine to me as a standalone patch. The RCU lookup changes really need to be squashed into the others, for one thing before this patch the PR code still tries to use ->device_list which isn't even maintained any more. It might be a good idea to grab these three patches from my older series and add them before your actual RCU changes to simplify the PR code in preparation of the RCU changes: http://git.infradead.org/users/hch/scsi.git/commitdiff/e9a71bda1a120e0488c5c4e4b2f17f14333e2dc6 http://git.infradead.org/users/hch/scsi.git/commitdiff/6372d9f62c83acb30d051387c40deb4dbdcaa376 http://git.infradead.org/users/hch/scsi.git/commitdiff/1c52408094cb831ee3c791b71ef631b9c5609d35 -- 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
