- 12 6月, 2009 2 次提交
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由 Michael S. Tsirkin 提交于
This replaces find_vq/del_vq with find_vqs/del_vqs virtio operations, and updates all drivers. This is needed for MSI support, because MSI needs to know the total number of vectors upfront. Signed-off-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> (+ lguest/9p compile fixes)
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由 Rusty Russell 提交于
Add a linked list of all virtqueues for a virtio device: this helps for debugging and is also needed for upcoming interface change. Also, add a "name" field for clearer debug messages. Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
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- 24 5月, 2009 8 次提交
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由 Christof Schmitt 提交于
Keep the information about the device and model id in zfcp_ccw. This requires an additional helper function to check for the privileged cfdc subchannel, but it allows the removal of the redundant defines from the zfcp_def header file. Reviewed-by: NSwen Schillig <swen@vnet.ibm.com> Signed-off-by: NChristof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>
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由 Swen Schillig 提交于
If the destination ID (D_ID) of a remote storage port changed, e.g. re-plugged cable on the switch in a different switch port, the port was never (re-)attached within Linux. This patch fixes the broken mapping between the WWPN and the D_ID. Signed-off-by: NSwen Schillig <swen@vnet.ibm.com> Signed-off-by: NChristof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>
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由 Martin Petermann 提交于
In rare cases, open port request might timeout, erp calls zfcp_port_put, port gets dequeued. Now, the late returning (or dismissed) fsf-port-open calls the fsf_port_open_handler that tries to reference the port data structure leading to a kernel oops. Signed-off-by: NMartin Petermann <martin.petermann@de.ibm.com> Signed-off-by: NChristof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>
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由 Christof Schmitt 提交于
Add comments where there is a deliberate fall through in switch/case statements. This makes some code checkers happy and makes it clear that there is no missing break statement. Reviewed-by: NSwen Schillig <swen@vnet.ibm.com> Signed-off-by: NChristof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>
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由 Christof Schmitt 提交于
enum dma_data_direction only has the 4 values DMA_BIDIRECTIONAL, DMA_TO_DEVICE, DMA_FROM_DEVICE and DMA_NONE. No need to have the default case. While changing this, setup sbtype in one place to make sparse happy. The default value of retval is already -EIO, so remove the additional assignment for these two cases. Reviewed-by: NSwen Schillig <swen@vnet.ibm.com> Signed-off-by: NChristof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>
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由 Christof Schmitt 提交于
zfcp did always set the queue_depth for SCSI devices to 32, not allowing to change this. Introduce a kernel parameter zfcp.queue_depth and the change_queue_depth callback to allow changing the queue_depth when it is required. Reviewed-by: NSwen Schillig <swen@vnet.ibm.com> Signed-off-by: NChristof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>
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由 Christof Schmitt 提交于
Update the newly introduced message for the boxed status to conform to match the style of s390 and zfcp messages. Reviewed-by: NSwen Schillig <swen@vnet.ibm.com> Signed-off-by: NChristof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>
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由 Christof Schmitt 提交于
The zfcp traces used the fsf_req address in place of the req_id. Change this to save the correct req_id. Reviewed-by: NSwen Schillig <swen@vnet.ibm.com> Signed-off-by: NChristof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>
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- 23 5月, 2009 1 次提交
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由 Martin K. Petersen 提交于
Until now we have had a 1:1 mapping between storage device physical block size and the logical block sized used when addressing the device. With SATA 4KB drives coming out that will no longer be the case. The sector size will be 4KB but the logical block size will remain 512-bytes. Hence we need to distinguish between the physical block size and the logical ditto. This patch renames hardsect_size to logical_block_size. Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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- 11 5月, 2009 2 次提交
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由 Tejun Heo 提交于
Till now block layer allowed two separate modes of request execution. A request is always acquired from the request queue via elv_next_request(). After that, drivers are free to either dequeue it or process it without dequeueing. Dequeue allows elv_next_request() to return the next request so that multiple requests can be in flight. Executing requests without dequeueing has its merits mostly in allowing drivers for simpler devices which can't do sg to deal with segments only without considering request boundary. However, the benefit this brings is dubious and declining while the cost of the API ambiguity is increasing. Segment based drivers are usually for very old or limited devices and as converting to dequeueing model isn't difficult, it doesn't justify the API overhead it puts on block layer and its more modern users. Previous patches converted all block low level drivers to dequeueing model. This patch completes the API transition by... * renaming elv_next_request() to blk_peek_request() * renaming blkdev_dequeue_request() to blk_start_request() * adding blk_fetch_request() which is combination of peek and start * disallowing completion of queued (not started) requests * applying new API to all LLDs Renamings are for consistency and to break out of tree code so that it's apparent that out of tree drivers need updating. [ Impact: block request issue API cleanup, no functional change ] Signed-off-by: NTejun Heo <tj@kernel.org> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Cc: Mike Miller <mike.miller@hp.com> Cc: unsik Kim <donari75@gmail.com> Cc: Paul Clements <paul.clements@steeleye.com> Cc: Tim Waugh <tim@cyberelk.net> Cc: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Cc: David S. Miller <davem@davemloft.net> Cc: Laurent Vivier <Laurent@lvivier.info> Cc: Jeff Garzik <jgarzik@pobox.com> Cc: Jeremy Fitzhardinge <jeremy@xensource.com> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Adrian McMenamin <adrian@mcmen.demon.co.uk> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Cc: Borislav Petkov <petkovbb@googlemail.com> Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com> Cc: Alex Dubov <oakad@yahoo.com> Cc: Pierre Ossman <drzeus@drzeus.cx> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Markus Lidel <Markus.Lidel@shadowconnect.com> Cc: Stefan Weinhuber <wein@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Pete Zaitcev <zaitcev@redhat.com> Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Tejun Heo 提交于
With recent cleanups, there is no place where low level driver directly manipulates request fields. This means that the 'hard' request fields always equal the !hard fields. Convert all rq->sectors, nr_sectors and current_nr_sectors references to accessors. While at it, drop superflous blk_rq_pos() < 0 test in swim.c. [ Impact: use pos and nr_sectors accessors ] Signed-off-by: NTejun Heo <tj@kernel.org> Acked-by: NGeert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Tested-by: NGrant Likely <grant.likely@secretlab.ca> Acked-by: NGrant Likely <grant.likely@secretlab.ca> Tested-by: NAdrian McMenamin <adrian@mcmen.demon.co.uk> Acked-by: NAdrian McMenamin <adrian@mcmen.demon.co.uk> Acked-by: NMike Miller <mike.miller@hp.com> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Cc: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Cc: Borislav Petkov <petkovbb@googlemail.com> Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com> Cc: Eric Moore <Eric.Moore@lsi.com> Cc: Alan Stern <stern@rowland.harvard.edu> Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: Pete Zaitcev <zaitcev@redhat.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Paul Clements <paul.clements@steeleye.com> Cc: Tim Waugh <tim@cyberelk.net> Cc: Jeff Garzik <jgarzik@pobox.com> Cc: Jeremy Fitzhardinge <jeremy@xensource.com> Cc: Alex Dubov <oakad@yahoo.com> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Dario Ballabio <ballabio_dario@emc.com> Cc: David S. Miller <davem@davemloft.net> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: unsik Kim <donari75@gmail.com> Cc: Laurent Vivier <Laurent@lvivier.info> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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- 28 4月, 2009 1 次提交
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由 Tejun Heo 提交于
There are many [__]blk_end_request() call sites which call it with full request length and expect full completion. Many of them ensure that the request actually completes by doing BUG_ON() the return value, which is awkward and error-prone. This patch adds [__]blk_end_request_all() which takes @rq and @error and fully completes the request. BUG_ON() is added to to ensure that this actually happens. Most conversions are simple but there are a few noteworthy ones. * cdrom/viocd: viocd_end_request() replaced with direct calls to __blk_end_request_all(). * s390/block/dasd: dasd_end_request() replaced with direct calls to __blk_end_request_all(). * s390/char/tape_block: tapeblock_end_request() replaced with direct calls to blk_end_request_all(). [ Impact: cleanup ] Signed-off-by: NTejun Heo <tj@kernel.org> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Mike Miller <mike.miller@hp.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Jeff Garzik <jgarzik@pobox.com> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Jeremy Fitzhardinge <jeremy@xensource.com> Cc: Alex Dubov <oakad@yahoo.com> Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
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- 27 4月, 2009 15 次提交
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由 Christof Schmitt 提交于
The zfcp_port might have been removed, while the FC fast_io_fail timer is still running and could trigger the terminate_rport_io callback. Set the pointer to the zfcp_port to NULL and check accordingly before using it. Reviewed-by: NMartin Petermann <martin@linux.vnet.ibm.com> Signed-off-by: NChristof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>
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由 Christof Schmitt 提交于
Before dropping the reference count with zfcp_adapter_put, increase it with zfcp_adapter_get when issuing cfdc requests. Reviewed-by: NMartin Petermann <martin@linux.vnet.ibm.com> Signed-off-by: NChristof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>
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由 Martin Petermann 提交于
If this problem appears zfcp ports cannot be de-queued since it is checked for a zero refcount. The port reference counting is wrong for existing zfcp ports when e.g. an adapter gets on-line again. During port scanning the reference counting for existing ports should not be changed. Signed-off-by: NMartin Petermann <martin.petermann@de.ibm.com> Signed-off-by: NChristof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>
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由 Martin Petermann 提交于
The current sbal counting can be wrong if a fsf request is waiting for free sbals and at the same time qdio request queue is shutdown and re-opened. Revering a previous patch fixes this issue. Signed-off-by: NMartin Petermann <martin.petermann@de.ibm.com> Signed-off-by: NChristof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>
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由 Christof Schmitt 提交于
When the abort handler cannot find a pending FSF request, the request completion could just be running. This means we cannot return SUCCESS, since this would lead to call to scsi_done after exiting the SCSI error handler which is not allowed. Reviewed-by: NMartin Petermann <martin@linux.vnet.ibm.com> Signed-off-by: NChristof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>
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由 Swen Schillig 提交于
A remote port remains in error state even if we receive a RSCN stating that the connection is re-established. The port recovery is not started due to a flag which is not reset. The solution is to clear the flag in question before we trigger a ERP. Signed-off-by: NSwen Schillig <swen@vnet.ibm.com> Signed-off-by: NChristof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>
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由 Christof Schmitt 提交于
Error codes specific to the control file requests are evaluated by the actcli tool, so don't report -ENXIO for those. Generic problems are still checked for outside the command specific handler. Reviewed-by: NMartin Petermann <martin@linux.vnet.ibm.com> Signed-off-by: NChristof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>
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由 Martin Petermann 提交于
On some hardware it can take some time to add a unit. If some remove this unit during this process the remove will fail. Signed-off-by: NMartin Petermann <martin@linux.vnet.ibm.com> Signed-off-by: NChristof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>
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由 Swen Schillig 提交于
The remote port remains in error state even if the connection is re-established. A wrong precondition check was performed on the port status leading to a cancellation of the port reopen. Remove the pre-req check because it's not required and better handled within the ERP. Signed-off-by: NSwen Schillig <swen@vnet.ibm.com> Signed-off-by: NChristof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>
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由 Swen Schillig 提交于
The ERP thread is performing a task before it is executing the corresponding down on the semaphore. The response handler of the just started exchange config should wait for the completion by performing a down on this semaphore. Since this semaphore is still positive from the ERP enqueue the handler won't wait and therefore the exchange config will always fail leaving the adapter in error. The problem can be solved by performing the down on the semaphore before starting an ERP task. This is the logically correct order. Only walk the ERP loop if there is a task to perform. Signed-off-by: NSwen Schillig <swen@vnet.ibm.com> Signed-off-by: NChristof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>
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由 Swen Schillig 提交于
The nameserver port might be in state online when the adapter is offlined. On adapter reactivation the nameserver port is not re-opened due to the PORT_ONLINE status. This results in an unsuccessful recovery. In forcing the nameserver port status to offline on all adapter offline events this issue is prevented. Waiting for the reference count to drop to zero in zfcp_wka_port_offline is not required, so remove it. Signed-off-by: NSwen Schillig <swen@vnet.ibm.com> Signed-off-by: NChristof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>
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由 Swen Schillig 提交于
When running the scsi_scan from the zfcp workqueue and the target device does not respond, the zfcp workqueue can block until the scsi_scan hits a timeout. Move the work to the scsi host workqueue, since this one is also used for the scan from the SCSI midlayer. Signed-off-by: NSwen Schillig <swen@vnet.ibm.com> Signed-off-by: NChristof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>
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由 Christof Schmitt 提交于
Fix problem that zfcp_fsf_exchange_config_data_sync and zfcp_fsf_exchange_config_data_sync could try to call zfcp_fsf_req_free with a NULL pointer. Reviewed-by: NMartin Petermann <martin@linux.vnet.ibm.com> Signed-off-by: NChristof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>
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由 Swen Schillig 提交于
Since we're setting the host port type now to FC_PORTTYPE_NPIV for adapters running in NPIV mode we should allow this port type for auto-port scanning as well. Signed-off-by: NSwen Schillig <swen@vnet.ibm.com> Signed-off-by: NChristof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>
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由 Martin Petermann 提交于
Avoid referencing a fsf request after sending it in fcp_fsf_req_send, it might have already completed and deallocated. Signed-off-by: NMartin Petermann <martin@linux.vnet.ibm.com> Signed-off-by: NChristof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>
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- 23 4月, 2009 1 次提交
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由 Frank Munzert 提交于
tape_3590_offline and tape_34xx_offline are removed and tape_generic_offline is called directly instead. Signed-off-by: NFrank Munzert <munzert@de.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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- 14 4月, 2009 3 次提交
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由 Stefan Weinhuber 提交于
A ccw command that reads or writes several records at once will usually transfer more data then fits into one page and needs to address memory areas using a list of indirect data address words (idaw). All but the first of these areas must start on a 4KB or 2KB block boundary (depending on the idaw format). A check for this restriction was missing and has been added with this patch. Signed-off-by: NStefan Weinhuber <wein@de.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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由 Cornelia Huck 提交于
The dasd driver can automatically online detected dasds, which especially important for finding the root device. Currently, it will wait for each online operation to finish individually, which may take long if many dasds need to be onlined. When using the new async framework, these onlining operations can run in parallel and presence of the root device is ensured by the fact that prepare_namespace() waits for all async threads to finish. Signed-off-by: NCornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: NStefan Haberland <stefan.haberland@de.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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由 Jan Glauber 提交于
The QDIO ccw devices are started by ccw_device_start so no timeout can occur for the interrupt handler. Remove the dead code. In case of an I/O error set the device state to error and wake up a possibly running qdio_shutdown waiter. Signed-off-by: NJan Glauber <jang@linux.vnet.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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- 03 4月, 2009 1 次提交
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由 Jean Delvare 提交于
It is a fairly common operation to have a pointer to a work and to need a pointer to the delayed work it is contained in. In particular, all delayed works which want to rearm themselves will have to do that. So it would seem fair to offer a helper function for this operation. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: NJean Delvare <khali@linux-fr.org> Acked-by: NIngo Molnar <mingo@elte.hu> Cc: "David S. Miller" <davem@davemloft.net> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Greg KH <greg@kroah.com> Cc: Pekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 02 4月, 2009 1 次提交
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由 Linus Torvalds 提交于
Commit 64ef8957 ("qeth: remove EDDP") removed the qeth_core_offl.[hc] files, but ended up doing so by just patching them to zero size, rather than removing them properly. Actually remove the files. Reported-by: NAndrew Price <andy@andrewprice.me.uk> Cc: Frank Blaschka <frank.blaschka@de.ibm.com> Cc: David S. Miller <davem@davemloft.net> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 01 4月, 2009 5 次提交
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由 Sebastian Ott 提交于
Start a new device recognition if someone writes to sysfs online attribute of a boxed ccw device. The current test will fail, since cu_type != 0 for devices which were recognized before. Signed-off-by: NSebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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由 Sebastian Ott 提交于
Return -EAGAIN on writes to sysfs online attribute if the corresponding ccw device is in transient state. Signed-off-by: NSebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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由 Sebastian Ott 提交于
If a ccw device did not respond in time during internal io, we set it into boxed state. With this patch we have the following behaviour: * the ccw driver will get a notification if the device was online and goes into the boxed state * if the device was disconnected and got boxed nothing special is to be done (it will be handled in reprobing later) * if the device got boxed while initial sensing it will be unregistered Signed-off-by: NSebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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由 Sebastian Ott 提交于
Introduce ccw_device_schedule_sch_unregister as a wrapper for queuing ccw_device_call_sch_unregister on the slow_path_wq. This wrapper will be used in the next patch. Signed-off-by: NSebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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由 Sebastian Ott 提交于
Wake up even on failed device recognition, since this may be triggered from a user trying to force a device online. With this patch a write to the online sysfs attribute will not block for ever but return with -EAGAIN in this case. Signed-off-by: NSebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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