Re: [PATCH 1/2] MAINTAINERS: ibmvscsi driver maintainer change

On 01/12/2015 06:31 PM, Tyrel Datwyler wrote: Change maintainer of ibmvscsi driver to Tyrel Datwyler. Signed-off-by: Tyrel Datwyler tyr...@linux.vnet.ibm.com Cc: Nathan Fontenot nf...@linux.vnet.ibm.com Cc: Brian King brk...@linux.vnet.ibm.com Acked-by: Nathan Fontenot

Re: dm + blk-mq soft lockup complaint

On Wed, Jan 14 2015 at 4:16am -0500, Bart Van Assche bart.vanass...@sandisk.com wrote: On 01/13/15 17:21, Mike Snitzer wrote: OK, I assume you specified the mpath device for the test that failed. Yes, of course ... This test works fine on my 100MB scsi_debug device with 4 paths

[PATCH] scsi: Avoid crashing if device uses DIX but adapter does not support it

From: Ewan D. Milne emi...@redhat.com This can happen if a multipathed device uses DIX and another path is added via an adapter that does not support it. Multipath should not allow this path to be added, but we should not depend upon that to avoid crashing. Signed-off-by: Ewan D. Milne

[PATCH 14/48] hpsa: refactor hpsa_find_board_params() to encapsulate legacy test

From: Webb Scales web...@hp.com Encapsulate the conditional predicate which tests for legacy controllers in a separate function and rework the code comments. Reviewed-by: Scott Teel scott.t...@pmcs.com Signed-off-by: Webb Scales web...@hp.com Signed-off-by: Don Brace don.br...@pmcs.com ---

[PATCH 10/48] hpsa: remove 0x from queue depth print which is in decimal

From: Robert Elliott elli...@hp.com The queue depth printed at startup is in decimal, so shouldn't have a 0x prefix. Reviewed-by: Scott Teel scott.t...@pmcs.com Signed-off-by: Robert Elliott elli...@hp.com Signed-off-by: Don Brace don.br...@pmcs.com --- drivers/scsi/hpsa.c |2 +- 1 file

[PATCH 11/48] hpsa: propagate hard_reset failures in reset_devices mode

From: Robert Elliott elli...@hp.com Return the real reason for kdump_hard_reset failure rather than change them all to -ENODEV. Reviewed-by: Scott Teel scott.t...@pmcs.com Signed-off-by: Robert Elliott elli...@hp.com Signed-off-by: Don Brace don.br...@pmcs.com --- drivers/scsi/hpsa.c |5

[PATCH 04/48] hpsa: change how SA controllers are reset

Change how SA controllers are reset by changing PCI power levels. The hpsa driver was finding the PCI_PM_CTRL_STATE_MASK offset then reading/writing a bitmask to change the power state. There are kernel functions that do the same operations. Better to use the kernel functions. Signed-off-by: Don

[PATCH 05/48] hpsa: correct change_queue_depth

scsi_adjust_queue_depth was changed to scsi_change_queue_depth Reviewed-by: Scott Teel scott.t...@pmcs.com Signed-off-by: Don Brace don.br...@pmcs.com --- drivers/scsi/hpsa.c | 16 +++- 1 file changed, 15 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/hpsa.c

[PATCH 06/48] hpsa: adjust RAID-1, RAID-1ADM, and RAID-6 names

From: Robert Elliott elli...@hp.com HP now uses RAID-6 rather than RAID-ADG (Advanced Data Guarding) as the marketing name for our implementation of RAID-6. The driver considers RAID-1 and RAID-1+0 to be the same level, and considers RAID-1ADM and RAID-1+0ADM to be the same level. Parenthesis

[PATCH 12/48] hpsa: propagate return value from board ID lookup

From: Robert Elliott elli...@hp.com If the board ID lookup function fails, return the return code rather than return -ENODEV. The only board ID failure reason right now is -ENODEV, so this just provides more informative prints in kdump and adapts to future changes. Tested with error injection

[PATCH 13/48] hpsa: downgrade the Waiting for no-op print to dev_info

From: Robert Elliott elli...@hp.com There is nothing worrisome about the Waiting for controller to respond to no-op print, so use dev_info rather than dev_warn. Reviewed-by: Scott Teel scott.t...@pmcs.com Signed-off-by: Robert Elliott elli...@hp.com Signed-off-by: Don Brace don.br...@pmcs.com

[PATCH 09/48] hpsa: notice all request_irq errors

From: Robert Elliott elli...@hp.com In MSI and MSI-X mode, where hpsa asks for more than one interrupt, hpsa_request_irqs forgets if the first request_irq call failed if later ones succeed. It needs to exit the loop on any failure rather than continue, freeing all irqs that were requested until

[PATCH 01/48] hpsa: correct endian sparse warnings

Correct endiness issues reported by sparse. SA controllers are little endian. This patch ensures endiness correctness. Signed-off-by: Don Brace don.br...@pmcs.com Reviewed-by: Scott Teel scott.t...@pmcs.com Reviewed-by: Webb Scales web...@hp.com --- drivers/scsi/hpsa.c | 275

[PATCH 02/48] hpsa: fix memory leak in kdump hard reset

From: Tomas Henzl the...@redhat.com There is a potential memory leak in hpsa_kdump_hard_reset_controller. Reviewed-by: Don Brace don.br...@pmcs.com Reviewed-by: Scott Teel scott.t...@pmcs.com Signed-off-by: Tomas Henzl the...@redhat.com Signed-off-by: Don Brace don.br...@pmcs.com ---

[PATCH 00/48] hpsa driver updates

This patch set is based on Linus's tree. The changes are: - correct sparse warnings - correct memory leaks - correct kdump issues - correct queue depth updates - cleanup function return values - cleanup and enhance messages - cleanup and enhance error handling - minor code refactoring -

[PATCH 03/48] hpsa: turn off interrupts when kdump starts

From: Tomas Henzl the...@redhat.com Sometimes when the card is restarted it may cause - irq 16: nobody cared (try booting with the irqpoll option) that is likely caused so, that the card, after the hard reset finishes, pulls on the irq. Disabling the ints before or after the

[PATCH 07/48] hpsa: rename free_irqs to hpsa_free_irqs

From: Robert Elliott elli...@hp.com Change the function names to have hpsa prefix. Reviewed-by: Scott Teel scott.t...@pmcs.com Signed-off-by: Robert Elliott elli...@hp.com Signed-off-by: Don Brace don.br...@pmcs.com --- drivers/scsi/hpsa.c | 43 ++- 1

[PATCH 15/48] hpsa: trivial message and comment clean ups

From: Stephen Cameron stephenmcame...@gmail.com Cleanup comments to be more specific. Make messages more informational. Reviewed-by: Scott Teel scott.t...@pmcs.com Signed-off-by: Robert Elliott elli...@hp.com Signed-off-by: Don Brace don.br...@pmcs.com --- drivers/scsi/hpsa.c | 21

[PATCH 17/48] hpsa: rename hpsa_request_irq to hpsa_request_irqs

From: Robert Elliott elli...@hp.com Make the function name more descriptive. We use more than one interrupt. Reviewed-by: Scott Teel scott.t...@pmcs.com Signed-off-by: Robert Elliott elli...@hp.com Signed-off-by: Don Brace don.br...@pmcs.com --- drivers/scsi/hpsa.c | 11 ++- 1 file

[PATCH 08/48] hpsa: Fix -Wunused-but-set-variable warning

From: Fabian Frederick f...@skynet.be Remove unused variable in hpsa_free_cmd_pool. Reviewed-by: Scott Teel scott.t...@pmcs.com Signed-off-by: Fabian Frederick f...@skynet.be Acked-by: Don Brace don.br...@pmcs.com Signed-off-by: Don Brace don.br...@pmcs.com --- drivers/scsi/hpsa.c |4 ++--

[PATCH 20/48] hpsa: fix memory leak in hpsa_alloc_cmd_pool

From: Robert Elliott elli...@hp.com Partial allocation failure wasn't handled correctly Reviewed-by: Scott Teel scott.t...@pmcs.com Signed-off-by: Robert Elliott elli...@hp.com Signed-off-by: Don Brace don.br...@pmcs.com --- drivers/scsi/hpsa.c |6 +- 1 file changed, 5 insertions(+), 1

[PATCH 19/48] hpsa: report allocation failures while allocating SG chain blocks

From: Robert Elliott elli...@hp.com Reviewed-by: Scott Teel scott.t...@pmcs.com Signed-off-by: Robert Elliott elli...@hp.com Signed-off-by: Don Brace don.br...@pmcs.com --- drivers/scsi/hpsa.c |8 ++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/scsi/hpsa.c

[PATCH 16/48] hpsa: report failure to ioremap config table

From: Robert Elliott elli...@hp.com Enhance error reporting. Reviewed-by: Scott Teel scott.t...@pmcs.com Signed-off-by: Robert Elliott elli...@hp.com Signed-off-by: Don Brace don.br...@pmcs.com --- drivers/scsi/hpsa.c |4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git

[PATCH 18/48] hpsa: pass error from pci_set_consistent_dma_mask from hpsa_message

From: Robert Elliott elli...@hp.com Return the actual error code instead of a generic error code. Reviewed-by: Scott Teel scott.t...@pmcs.com Signed-off-by: Robert Elliott elli...@hp.com Signed-off-by: Don Brace don.br...@pmcs.com --- drivers/scsi/hpsa.c |2 +- 1 file changed, 1

Re: [LSF/MM TOPIC] Unifying the LIO and SCST target drivers

On Wed, 2015-01-14 at 11:05 +0100, Bart Van Assche wrote: The LIO and SCST SCSI target subsystems consist of the following components: * A core that processes SCSI commands and that provides common functionality like persistent reservations, LUN masking and an interface that allows

[PATCH 46/48] hpsa: detect and report failures changing controller transport modes

From: Robert Elliott elli...@hp.com Detect failues when attempting to change controller to use simple or performant transport modes (mode change ack) rather than just proceeding ahead after timeouts. Return values are added to: hpsa_put_ctlr_into_performant_mode

[PATCH 47/48] hpsa: add in gen9 controller model names

Add in gen9 controller model names Reviewed-by: Scott Teel scott.t...@pmcs.com Signed-off-by: Don Brace don.br...@pmcs.com --- drivers/scsi/hpsa.c | 26 +- 1 file changed, 13 insertions(+), 13 deletions(-) diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c index

[PATCH 45/48] hpsa: shorten the wait for the CISS doorbell mode change ack

From: Robert Elliott elli...@hp.com Shorten the wait for the CISS configuration table doorbell mode change acknowledgment from 300-600 s to 20 s, which is the value specified in the CISS specification that should be honored by all controllers. Wait using interruptible msleep() rather than

[PATCH 43/48] hpsa: move SG descriptor set-up out of hpsa_scatter_gather()

From: Webb Scales web...@hp.com Move the code which sets up the SG descriptor out of hpsa_scatter_gather() and into a subroutine where it can be reused (in the next patch). The Ext field is now assigned unconditionally: this makes the refactor much simpler, but more importantly it removes a

[PATCH 48/48] hpsa: add in P840ar controller model name

Add in P840ar model name for gen9 Reviewed-by: Scott Teel scott.t...@pmcs.com Signed-off-by: Don Brace don.br...@pmcs.com --- drivers/scsi/hpsa.c |2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c index 6568da5..15ef65c 100644 ---

[PATCH 42/48] hpsa: do not use function pointers in fast path command submission

From: Stephen Cameron stephenmcame...@gmail.com Performance tweak, avoid unnecessary function calls. Reviewed-by: Scott Teel scott.t...@pmcs.com Signed-off-by: Don Brace don.br...@pmcs.com --- drivers/scsi/hpsa.c |8 +--- drivers/scsi/hpsa.h |5 + 2 files changed, 6

Re: [LSF/MM TOPIC] Unifying the LIO and SCST target drivers

On 1/14/15, 2:05 AM, Bart Van Assche bart.vanass...@sandisk.com wrote: The LIO and SCST SCSI target subsystems consist of the following components: * A core that processes SCSI commands and that provides common functionality like persistent reservations, LUN masking and an interface that allows

Re: [PATCH] scsi: Avoid crashing if device uses DIX but adapter does not support it

Ewan == Ewan D Milne emi...@redhat.com writes: Ewan This can happen if a multipathed device uses DIX and another path Ewan is added via an adapter that does not support it. Multipath Ewan should not allow this path to be added, No it shouldn't :) diff --git a/drivers/scsi/scsi_lib.c

[PATCH 28/48] hpsa: use per-controller work queue

From: Webb Scales web...@hp.com There is a possibility of deadlock if we use the system work queue for command resubmission since something in the queue may be depending on the I/O that gets resubmitted, and the resubmitted I/O will be behind the thing that depends on it in the queue. Using a

[PATCH 24/48] hpsa: do not queue commands internally in driver

By not doing maintaining a list of queued commands, we can eliminate some spin locking in the main i/o path and gain significant improvement in IOPS. Remove the queuing code and the code that calls it; remove now-unused interrupt code; remove DIRECT_LOOKUP_BIT. Now that the passthru commands

[PATCH 29/48] hpsa: honor queue depth of physical devices

When using the ioaccel submission methods, requests destined for RAID volumes are sometimes diverted to physical devices. The OS has no or limited knowledge of these physical devices, so it is up to the driver to avoid pushing the device too hard. It is better to honor the physical device queue

[PATCH 25/48] hpsa: do not request device rescan on every ioaccel path error

From: Stephen Cameron stephenmcame...@gmail.com The original reasoning behind doing this was faulty. An error of some sort would be encountered, accelerated i/o would be disabled for that logical drive, the command would be kicked back out to the SCSI midlayer for a retry, and since i/o

[PATCH 23/48] hpsa: get rid of cmd_special_alloc and cmd_special_free

From: Stephen Cameron stephenmcame...@gmail.com We have commands reserved for internal use. This is laying the groundwork for removing the internal queue of commands from the driver so that the locks that protect that queue may be removed. Reviewed-by: Scott Teel scott.t...@pmcs.com

[PATCH 22/48] hpsa: reserve some commands for use by driver

From: Stephen Cameron stephenmcame...@gmail.com We need to reserve some commands for device rescans, aborts, and the pass through ioctls, etc. so we cannot give them all to the scsi mid layer. This is in preparation for removing cmd_special_alloc and cmd_special_free so that we can stop queuing

[PATCH 27/48] hpsa: use workqueue to resubmit failed ioaccel commands

Instead of kicking the commands all the way back to the mid layer, use a work queue. This enables having a mechanism for the driver to be able to resubmit the commands down the normal raid path without turning off the ioaccel feature entirely whenever an error is encountered on the ioaccel path,

[PATCH 26/48] hpsa: factor out hpsa_ciss_submit function

From: Stephen Cameron stephenmcame...@gmail.com Factor out the bottom part of the queuecommand function which is the part that builds commands for submitting down the normal' RAID stack path of a Smart Array. Need to factor this out to improve how commands that were initially sent down one of

[PATCH 34/48] hpsa: do not check for msi(x) in interrupt_pending

From: Stephen Cameron stephenmcame...@gmail.com No need to check whether interrupt pending for MSI(X) and conversely, no need to check whether MSI(X) interrupts are being used when checking if interrupts are pending. Reviewed-by: Scott Teel scott.t...@pmcs.com Signed-off-by: Don Brace

[PATCH 31/48] hpsa: optimize cmd_alloc function by remembering last allocation

From: Robert Elliott elli...@hp.com Empirically, this improves performance slightly (~2% max IOPS) by allowing cmd_alloc to remember where it left off searching for free commands between calls instead of always starting its search at command 0. Reviewed-by: Scott Teel scott.t...@pmcs.com

[PATCH 21/48] hpsa: avoid unneccesary calls to resource freeing functions

From: Robert Elliott elli...@hp.com If hpsa_allocate_cmd_pool failed, we were calling two functions unnecessarily: hpsa_free_sg_chain_blocks(h); hpsa_free_cmd_pool(h); This didn't cause any problem, as those functions can tolerate being called when what they free hasn't been allocated

[PATCH 30/48] hpsa: fix race between abort handler and main i/o path

From: Webb Scales web...@hp.com This means changing the allocator to reference count commands. The reference count is now the authoritative indicator of whether a command is allocated or not. The h-cmd_pool_bits bitmap is now only a heuristic hint to speed up the allocation process, it is no

[PATCH 37/48] hpsa: guard against overflowing raid map array

From: Stephen Cameron stephenmcame...@gmail.com In the code that translates logical drive LBAs to physical drive LBAs if we overflow the raid map disk data array we will get the wrong answers. We do not expect that to happen, but best to be on the safe side and guard against it anyway.

[PATCH 40/48] hpsa: do not use a void pointer for scsi_cmd field of struct CommandList

From: Stephen Cameron stephenmcame...@gmail.com There's no reason for it to be a void *, it should be a struct scsi_cmnd * Reviewed-by: Scott Teel scott.t...@pmcs.com Signed-off-by: Don Brace don.br...@pmcs.com --- drivers/scsi/hpsa.c |6 +++--- drivers/scsi/hpsa_cmd.h |2 +- 2

[PATCH 41/48] hpsa: print CDBs instead of kernel virtual addresses for uncommon errors

From: Stephen Cameron stephenmcame...@gmail.com Printing the address of the command pointer is of little value, change to print the CDB. Reviewed-by: Scott Teel scott.t...@pmcs.com Signed-off-by: Don Brace don.br...@pmcs.com --- drivers/scsi/hpsa.c | 29 - 1 file

[PATCH 38/48] hpsa: check for ctlr lockup after command allocation in main io path

From: Stephen Cameron stephenmcame...@gmail.com Command allocation is the thing that takes the longest in the main i/o path, so check for controller lockup immediately after this to prevent submitting commands to locked up controller as much as possible. Reviewed-by: Scott Teel

[PATCH 36/48] hpsa: do not ack controller events on controllers that do not support it

From: Stephen Cameron stephenmcame...@gmail.com Acking controller events on controllers that do not support it can cause such controllers to lock up. Reviewed-by: Scott Teel scott.t...@pmcs.com Signed-off-by: Joe Handzik joseph.t.hand...@hp.com Signed-off-by: Don Brace don.br...@pmcs.com ---

[PATCH 35/48] hpsa: remove incorrect BUG_ONs checking for raid offload enable

From: Stephen Cameron stephenmcame...@gmail.com In set_encrypt_ioaccel2() and in hpsa_scsi_ioaccel_raid_map there were BUG_ONs that looked like this: BUG_ON(!(dev-offload_config dev-offload_enabled)); But, In hpsa_ack_ctlr_events() we have this, /* Stop sending new RAID

[PATCH 33/48] hpsa: slightly optimize SA5_performant_completed

Reviewed-by: Scott Teel scott.t...@pmcs.com Signed-off-by: Don Brace don.br...@pmcs.com --- drivers/scsi/hpsa.h |8 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/scsi/hpsa.h b/drivers/scsi/hpsa.h index 1856445..aa6cb0b 100644 --- a/drivers/scsi/hpsa.h +++

[PATCH 32/48] hpsa: count passthru cmds with atomics, not a spin locked int

Performance enhancement. Remove spin_locks from the driver. Reviewed-by: Scott Teel scott.t...@pmcs.com Signed-off-by: Don Brace don.br...@pmcs.com --- drivers/scsi/hpsa.c | 39 +-- drivers/scsi/hpsa.h |3 +-- 2 files changed, 6 insertions(+), 36

[PATCH 39/48] hpsa: return failed from device reset/abort handlers

Returning failed from the device reset handler will get the device kicked offline, which is fine if the controller is locked up anyhow. Cannot abort a command from a failed controller. Reviewed-by: Scott Teel scott.t...@pmcs.com Reviewed-by: Justin Lindley justin.lind...@pmcs.com Signed-off-by:

Re: [PATCH for v3.19, v2] Avoid that sd_shutdown() triggers a kernel warning

On Wed, 14 Jan 2015, Christoph Hellwig wrote: On Mon, Jan 12, 2015 at 11:29:15AM -0500, Alan Stern wrote: This seems like a good idea and the obvious (once it has been pointed out!) approach. Perhaps not directly related to the issue at hand is this question: In scsi_rescan_device()

Re: [PATCH 3/9] scsi: use external buffer for command logging

On Wed, 2015-01-14 at 10:36 +0100, h...@lst.de wrote: On Tue, Jan 13, 2015 at 06:56:17PM +, James Bottomley wrote: I really hate using an on-stack buffer here ... we're pretty deep in the call chain already. Since it's just required for printing a command: prefix, why not just use

Re: [linux-devel:devel-lkp-ib03-powerpc-201501140043 30/31] drivers/scsi/scsi_logging.c:254:3: error: format not a string literal and no format arguments

On Wed, 2015-01-14 at 01:40 -0800, Christoph Hellwig wrote: On Tue, Jan 13, 2015 at 05:30:20PM +, James Bottomley wrote: Just for everyone's sake the problem is printk format strings (and all the things that indirect there, like pr_xxx and dev_printk). We must never pass a mutable

[PATCH RFC] qla2xxx: Fix qla27xx_write_reg()

The second argument passed to qla27xx_write_reg() is a byte offset. This means that this function must read data from (void *)reg + offset instead of (void *)reg + sizeof(*reg) * offset. Found this via source reading. Untested. --- drivers/scsi/qla2xxx/qla_tmpl.c | 2 +- 1 file changed, 1

[PATCH v3 06/16] virtio/scsi: verify device has config space

Some devices might not implement config space access (e.g. remoteproc used not to - before 3.9). virtio/scsi needs config space access so make it fail gracefully if not there. Signed-off-by: Michael S. Tsirkin m...@redhat.com --- drivers/scsi/virtio_scsi.c | 6 ++ 1 file changed, 6

Re: dm + blk-mq soft lockup complaint

On 01/13/15 17:21, Mike Snitzer wrote: OK, I assume you specified the mpath device for the test that failed. Yes, of course ... This test works fine on my 100MB scsi_debug device with 4 paths exported over virtio-blk to a guest that assembles the mpath device. Could be a hang that is

Re: [PATCH for v3.19, v2] Avoid that sd_shutdown() triggers a kernel warning

On Mon, Jan 12, 2015 at 11:29:15AM -0500, Alan Stern wrote: This seems like a good idea and the obvious (once it has been pointed out!) approach. Perhaps not directly related to the issue at hand is this question: In scsi_rescan_device() we will now have:

Re: [PATCH 3/9] scsi: use external buffer for command logging

On Tue, Jan 13, 2015 at 06:56:17PM +, James Bottomley wrote: I really hate using an on-stack buffer here ... we're pretty deep in the call chain already. Since it's just required for printing a command: prefix, why not just use scsi_print_command()? Both the ch and sr callers are not

Re: [linux-devel:devel-lkp-ib03-powerpc-201501140043 30/31] drivers/scsi/scsi_logging.c:254:3: error: format not a string literal and no format arguments

On Tue, Jan 13, 2015 at 05:30:20PM +, James Bottomley wrote: Just for everyone's sake the problem is printk format strings (and all the things that indirect there, like pr_xxx and dev_printk). We must never pass a mutable string directly to printk because of the mayhem that would result

RE: [PATCH 09/10] megaraid_sas: swap whole register in megasas_register_aen

-Original Message- From: Christoph Hellwig [mailto:h...@lst.de] Sent: Saturday, January 10, 2015 10:41 PM To: sumit.sax...@avagotech.com; kashyap.de...@avagotech.com Cc: martin.peter...@oracle.com; linux-scsi@vger.kernel.org Subject: [PATCH 09/10] megaraid_sas: swap whole register in

RE: [PATCH 08/10] megaraid_sas: fix megasas_fire_cmd_fusion calling convention

-Original Message- From: Christoph Hellwig [mailto:h...@lst.de] Sent: Saturday, January 10, 2015 10:41 PM To: sumit.sax...@avagotech.com; kashyap.de...@avagotech.com Cc: martin.peter...@oracle.com; linux-scsi@vger.kernel.org Subject: [PATCH 08/10] megaraid_sas: fix megasas_fire_cmd_fusion

RE: [PATCH 10/10] megaraid_sas: fix endianess for the crash dump state support

-Original Message- From: Christoph Hellwig [mailto:h...@lst.de] Sent: Saturday, January 10, 2015 10:41 PM To: sumit.sax...@avagotech.com; kashyap.de...@avagotech.com Cc: martin.peter...@oracle.com; linux-scsi@vger.kernel.org Subject: [PATCH 10/10] megaraid_sas: fix endianess for the crash

[LSF/MM TOPIC] How SRP initiator performance has been improved via scsi-mq

Recently it has been proposed to discuss how to add scsi-mq support in the iSER initiator during the 2015 edition of the LSF/MM summit. In the discussion that followed that proposal several questions were asked about how scsi-mq support has been added in the SRP initiator driver, which design

[LSF/MM TOPIC] Unifying the LIO and SCST target drivers

The LIO and SCST SCSI target subsystems consist of the following components: * A core that processes SCSI commands and that provides common functionality like persistent reservations, LUN masking and an interface that allows configuration from user space. * Device handlers that allow this core to

Re: [LSF/MM TOPIC] Unifying the LIO and SCST target drivers

On 01/14/2015 11:05 AM, Bart Van Assche wrote: The LIO and SCST SCSI target subsystems consist of the following components: * A core that processes SCSI commands and that provides common functionality like persistent reservations, LUN masking and an interface that allows configuration from

Re: [PATCH] scsi: remove scsi_to_u32

On 01/10/15 11:10, Christoph Hellwig wrote: scsi_to_u32 is a non-optimized reimplementation of get_unaligned_be32, just use the real thing (TM). Reviewed-by: Bart Van Assche bart.vanass...@sandisk.com -- To unsubscribe from this list: send the line unsubscribe linux-scsi in the body of a

RE: [PATCH 07/10] megaraid_sas: add missing byte swaps to the sriov code

-Original Message- From: Christoph Hellwig [mailto:h...@lst.de] Sent: Saturday, January 10, 2015 10:41 PM To: sumit.sax...@avagotech.com; kashyap.de...@avagotech.com Cc: martin.peter...@oracle.com; linux-scsi@vger.kernel.org Subject: [PATCH 07/10] megaraid_sas: add missing byte swaps to

RE: [PATCH 06/10] megaraid_sas: bytewise or should be done on native endian variables

-Original Message- From: Christoph Hellwig [mailto:h...@lst.de] Sent: Saturday, January 10, 2015 10:41 PM To: sumit.sax...@avagotech.com; kashyap.de...@avagotech.com Cc: martin.peter...@oracle.com; linux-scsi@vger.kernel.org Subject: [PATCH 06/10] megaraid_sas: bytewise or should be done