summaryrefslogtreecommitdiffstats
path: root/drivers/block/cciss.c
Commit message (Collapse)AuthorAgeFilesLines
* Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-blockLinus Torvalds2009-10-041-207/+546
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-linus' of git://git.kernel.dk/linux-2.6-block: (41 commits) Revert "Seperate read and write statistics of in_flight requests" cfq-iosched: don't delay async queue if it hasn't dispatched at all block: Topology ioctls cfq-iosched: use assigned slice sync value, not default cfq-iosched: rename 'desktop' sysfs entry to 'low_latency' cfq-iosched: implement slower async initiate and queue ramp up cfq-iosched: delay async IO dispatch, if sync IO was just done cfq-iosched: add a knob for desktop interactiveness Add a tracepoint for block request remapping block: allow large discard requests block: use normal I/O path for discard requests swapfile: avoid NULL pointer dereference in swapon when s_bdev is NULL fs/bio.c: move EXPORT* macros to line after function Add missing blk_trace_remove_sysfs to be in pair with blk_trace_init_sysfs cciss: fix build when !PROC_FS block: Do not clamp max_hw_sectors for stacking devices block: Set max_sectors correctly for stacking devices cciss: cciss_host_attr_groups should be const cciss: Dynamically allocate the drive_info_struct for each logical drive. cciss: Add usage_count attribute to each logical drive in /sys ...
| * cciss: fix build when !PROC_FSAlexander Beregalov2009-10-011-4/+5
| | | | | | | | | | | | | | | | | | | | | | | | Fix these build errors when CONFIG_PROC_FS is not set: drivers/block/cciss.c: In function 'cciss_show_raid_level': drivers/block/cciss.c:623: error: 'RAID_UNKNOWN' undeclared (first use in this function) drivers/block/cciss.c:626: error: 'raid_label' undeclared (first use in this function) drivers/block/cciss.c: In function 'cciss_geometry_inquiry': drivers/block/cciss.c:2696: error: 'RAID_UNKNOWN' undeclared (first use in this function) Signed-off-by: Alexander Beregalov <a.beregalov@gmail.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| * cciss: cciss_host_attr_groups should be constJens Axboe2009-10-011-1/+1
| | | | | | | | Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| * cciss: Dynamically allocate the drive_info_struct for each logical drive.Stephen M. Cameron2009-10-011-128/+165
| | | | | | | | | | | | | | | | | | | | | | | | cciss: Dynamically allocate the drive_info_struct for each logical drive. This reduces the size of the per-hba ctlr_info structure from 106936 bytes to 8132 bytes. That's on 32-bit systems. On 64-bit systems, the improvement is even bigger. Without this, the ctlr_info struct is so big that the driver won't even load on a 64 bit system if CISS_MAX_LUN was at it's current setting of 1024 logical drives. Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| * cciss: Add usage_count attribute to each logical drive in /sysStephen M. Cameron2009-10-011-0/+20
| | | | | | | | | | | | | | | | | | | | Add usage_count attribute to each logical drive at /sys/devices/<dev>/ccissX/cXdY/usage_count for controller X, logical drive Y. The usage count is the number of times the device has currently been opened. Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| * cciss: Add a "raid_level" attribute to each logical drive in /sysStephen M. Cameron2009-10-011-0/+24
| | | | | | | | | | | | | | | | | | | | | | and change get rid of some magic numbers in raid lavel decoding. Add raid_level attribute to each logical drive at /sys/devices/<dev>/ccissX/cXdY/raid_level for controller X, logical drive Y Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| * cciss: fix some magic numbers in the raid-level decodingStephen M. Cameron2009-10-011-3/+2
| | | | | | | | | | | | | | cciss: fix some magic numbers in the raid-level decoding Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| * cciss: Add lunid attribute to each logical drive in /sysStephen M. Cameron2009-10-011-0/+26
| | | | | | | | | | | | | | | | | | Add lunid attribute to each logical drive at /sys/devices/<dev>/ccissX/cXdY/lunid for controller X, logical drive Y Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| * cciss: Don't check h->busy_initializing in cciss_open().Stephen M. Cameron2009-10-011-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Don't check h->busy_initializing in cciss_open(). Open won't be called before things are ready, but h->busy_initializing won't be unset until after the initial rebuild_lun_table is finished. But, to read the partitions, cciss_open will be called for each logical drive during rebuild_lun_table. If cciss_open checks h->busy_initializing, then the reading of the partition information during the initial rebuild_lun_table will fail, which is especially bad news if it happens to be your boot device. Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| * cciss: Preserve all 8 bytes of LUN ID for logical drives.Stephen M. Cameron2009-10-011-24/+24
| | | | | | | | | | | | | | | | | | | | Preserve all 8 bytes of the LunID field returned by CCISS_REPORT_LOGICAL instead of only saving 4 bytes. This fixes a bug with logical volume addressing encountered on an MSA2012. Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| * cciss: Silence noisy per-disk messages output by cciss_read_capacityStephen M. Cameron2009-10-011-5/+0
| | | | | | | | | | | | | | Silence noisy per-disk messages output by cciss_read_capacity Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| * cciss: Fix excessive gendisk freeing bug on driver unload.Stephen M. Cameron2009-10-011-7/+8
| | | | | | | | | | | | | | | | | | | | Fix bug that free_hba was calling put_disk for all gendisk[] pointers -- all 1024 of them -- regardless of whether the were used or not (NULL). This bug could cause rmmod to oops if logical drives had been deleted during the driver's lifetime. Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| * cciss: Fix usage_count check in rebuild_lun_table when triggered via sysfs.Stephen M. Cameron2009-10-011-12/+21
| | | | | | | | | | | | | | | | | | | | When rebuild_lun_table is reached via sysfs, the usage count that is checked prior to messing with c0d0 has different constraints (must be zero) than if rebuild_lun_table is reached via ioctl (must be one.) Fix rebuild_lun_table to take that into account. Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| * cciss: Clear all sysfs-exposed data for deleted logical drives.Stephen M. Cameron2009-10-011-10/+21
| | | | | | | | | | | | | | | | When removing a logical drive, clear all the information that is now exposed by sysfs (e.g. vendor, model, serial number.) Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| * cciss: Handle special case for sysfs attributes of the first logical drive.Stephen M. Cameron2009-10-011-4/+14
| | | | | | | | | | | | | | | | | | | | | | | | For c0dx where x is not 0, we handle deletion and addition simply, but for c0d0, there is the special case that even when there's no disk, the device node exists so that the controller may be accessed. So, for c0d0, we only create the sysfs entries once, when a controller is added, and only remove them once, when a controller is being taken down. Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| * cciss: Handle cases when cciss_add_disk fails.Stephen M. Cameron2009-10-011-10/+25
| | | | | | | | | | | | | | Handle cases when cciss_add_disk fails. Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| * cciss: Handle failure of blk_init_queue gracefully in cciss_add_disk.Stephen M. Cameron2009-10-011-0/+3
| | | | | | | | | | | | | | Handle failure of blk_init_queue gracefully in cciss_add_disk. Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| * cciss: Rearrange logical drive sysfs code to make the "changing a disk" path ↵Stephen M. Cameron2009-10-011-10/+10
| | | | | | | | | | | | | | | | | | work. Rearrange logical drive sysfs code to make the "changing a disk" path work. Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| * cciss: Dynamically allocate struct device for each logical drive as needed.Stephen M. Cameron2009-10-011-26/+72
| | | | | | | | | | | | | | | | Dynamically allocate struct device for each logical drive as needed instead of allocating the maximum we would ever need at driver init time. Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| * cciss: Remove some unused code in rebuild_lun_table()Stephen M. Cameron2009-10-011-8/+0
| | | | | | | | | | | | | | Remove some unused code in rebuild_lun_table() Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| * cciss: Allow triggering of rescan of logical drive topology via sysfs entryAndrew Patterson2009-10-011-3/+33
| | | | | | | | | | | | | | | | | | | | Added /sys/bus/pci/devices/<dev>/ccissX/rescan sysfs entry used to kick off a rescan that discovers logical drive topology changes. Signed-off-by: Andrew Patterson <andrew.patterson@hp.com> Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Acked-by: Mike Miller <mike.miller@hp.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| * cciss: Use one scan thread per controller and fix hang during rmmodAndrew Patterson2009-10-011-20/+136
| | | | | | | | | | | | | | | | | | | | | | | | | | Replace the use of one scan kthread per controller with one per driver. Use a queue to hold a list of controllers that need to be rescanned with routines to add and remove controllers from the queue. Fix locking and completion handling to prevent a hang during rmmod. Signed-off-by: Andrew Patterson <andrew.patterson@hp.com> Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Acked-by: Mike Miller <mike.miller@hp.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| * cciss: Remove sysfs entries for logical drives on driver cleanup.Andrew Patterson2009-10-011-1/+4
| | | | | | | | | | | | | | | | | | | | Sysfs entries for logical drives need to be removed when a drive is deleted during driver cleanup. Signed-off-by: Andrew Patterson <andrew.patterson@hp.com> Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Acked-by: Mike Miller <mike.miller@hp.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| * cciss: fix schedule_timeout() parametersRandy Dunlap2009-10-011-2/+3
| | | | | | | | | | | | | | | | | | | | | | Change schedule_timeout() parameter to not be specific to HZ=1000. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Acked-by: Mike Miller <mike.miller@hp.com> Cc: Marcin Slusarz <marcin.slusarz@gmail.com> Cc: "Cameron, Steve" <Steve.Cameron@hp.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* | const: constify remaining file_operationsAlexey Dobriyan2009-10-011-1/+1
|/ | | | | | | | [akpm@linux-foundation.org: fix KVM] Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Acked-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* seq_file: constify seq_operationsJames Morris2009-09-231-1/+1
| | | | | | | | | | | | | | Make all seq_operations structs const, to help mitigate against revectoring user-triggerable function pointers. This is derived from the grsecurity patch, although generated from scratch because it's simpler than extracting the changes from there. Signed-off-by: James Morris <jmorris@namei.org> Acked-by: Serge Hallyn <serue@us.ibm.com> Acked-by: Casey Schaufler <casey@schaufler-ca.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* const: make block_device_operations constAlexey Dobriyan2009-09-221-1/+1
| | | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* driver model: constify attribute groupsDavid Brownell2009-09-151-1/+1
| | | | | | | | | | Let attribute group vectors be declared "const". We'd like to let most attribute metadata live in read-only sections... this is a start. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* cciss: memory leak in cciss_init_one()Eric Dumazet2009-09-111-2/+2
| | | | | | | | | commit 22bece00dc1f28dd3374c55e464c9f02eb642876 (cciss: fix regression firmware not displayed in procfs) added a small memory leak in cciss_init_one() Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* headers: smp_lock.h reduxAlexey Dobriyan2009-07-121-0/+1
| | | | | | | | | | | | | * Remove smp_lock.h from files which don't need it (including some headers!) * Add smp_lock.h to files which do need it * Make smp_lock.h include conditional in hardirq.h It's needed only for one kernel_locked() usage which is under CONFIG_PREEMPT This will make hardirq.h inclusion cheaper for every PREEMPT=n config (which includes allmodconfig/allyesconfig, BTW) Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* cciss: Ignore stale commands after rebootHannes Reinecke2009-07-031-2/+13
| | | | | | | | | | | | | | | | | | When doing an unexpected shutdown like kexec the cciss firmware might still have some commands in flight, which it is trying to complete. The driver is doing it's best on resetting the HBA, but sadly there's a firmware issue causing the firmware _not_ to abort or drop old commands. So the firmware will send us commands which we haven't accounted for, causing the driver to panic. With this patch we're just ignoring these commands as there is nothing we could be doing with them anyway. Signed-off-by: Hannes Reinecke <hare@suse.de> Acked-by: Mike Miller <mike.miller@hp.com> Signed-off-by: Jens Axboe <axboe@carl.(none)>
* block: remove some includings of blktrace_api.hLi Zefan2009-06-161-1/+0
| | | | | | | | When porting blktrace to tracepoints, we changed to trace/block.h for trace prober declarations. Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* cciss: Remove no longer needed sendcmd reject processing codescameron@beardog.cca.cpqcorp.net2009-06-091-95/+3
| | | | | | | | | | | Now that the cciss SCSI error handling routines operate with interrupts enabled, we no longer need to maintain the list of command completions that sendcmd() might inadvertantly scoop up, since now it only runs at driver init time, and there won't be any other commands for it to scoop up. So we can remove that list and the code that adds to it and processes it. Signed-off-by: Stephen M. Cameron <scameron@beardog.cca.cpqcorp.net> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* cciss: change SCSI error handling routines to work with interrupts enabled.scameron@beardog.cca.cpqcorp.net2009-06-091-0/+3
| | | | | | | Change cciss scsi error handling routines to work with interrupts enabled. Signed-off-by: Stephen M. Cameron <scameron@beardog.cca.cpqcorp.net> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* cciss: separate error processing and command retrying code in ↵scameron@beardog.cca.cpqcorp.net2009-06-091-32/+45
| | | | | | | | | | | | sendcmd_withirq_core() Separate the error processing from sendcmd_withirq_core from the code which retries commands. The rationale for this is that the SCSI error handling code can then be made to use sendcmd_withirq_core, but avoid retrying commands. Signed-off-by: Stephen M. Cameron <scameron@beardog.cca.cpqcorp.net> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* cciss: factor out fix target status processing code from sendcmd functionsscameron@beardog.cca.cpqcorp.net2009-06-091-22/+34
| | | | | | | | | Factor out code to process target status of completed commands in sendcmd() and sendcmd_withirq_core(), and fix problem that bad target status was ignored in sendcmd_withirq_core. Signed-off-by: Stephen M. Cameron <scameron@beardog.cca.cpqcorp.net> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* cciss: simplify interface of sendcmd() and sendcmd_withirq()scameron@beardog.cca.cpqcorp.net2009-06-091-62/+53
| | | | | | | | Simplify interfaces of sendcmd() and sendcmd_withirq() so that they provide only one way to address commands instead of three ways. Signed-off-by: Stephen M. Cameron <scameron@beardog.cca.cpqcorp.net> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* cciss: factor out core of sendcmd_withirq() for use by SCSI error handling codescameron@beardog.cca.cpqcorp.net2009-06-091-87/+96
| | | | | | | | Factor the core of sendcmd_withirq out to provide a simpler interface which provides access to full error information. Signed-off-by: Stephen M. Cameron <scameron@beardog.cca.cpqcorp.net> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* cciss: add cciss driver sysfs entriesAndrew Patterson2009-06-021-3/+264
| | | | | | | | | | | | | | | | | Add sysfs entries to the cciss driver needed for the dm/multipath tools. A file for vendor, model, rev, and unique_id is added for each logical drive under directory /sys/bus/pci/devices/<dev>/ccissX/cXdY. Where X = the controller (or host) number and Y is the logical drive number. A link from /sys/bus/pci/devices/<dev>/ccissX/cXdY/block:cciss!cXdY to /sys/block/cciss!cXdY/device is also created. A bus is created in /sys/bus/cciss. A link is created from the pci ccissX entry to /sys/bus/cciss/devices/ccissX. Please consider this for inclusion. Signed-off-by: Mike Miller <mike.miller@hp.com> Cc: Stephen M. Cameron <scameron@beardog.cca.cpqcorp.net> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* cciss: fix SCSI device reset handlerStephen M. Cameron2009-06-021-3/+11
| | | | | | | | | | | | | | | | | | | | Fix the SCSI reset error handler to send a working, properly addressed reset message to the target device and add code to wait for the target device to become ready by polling it with Test Unit Ready. The existing reset code was broken in that it didn't bother to set the 8-byte LUN address to anything besides zero, so the command was addressed to the controller, which pretended to the driver that the command succeeded, while doing nothing. Ages ago I tested this code, but unbeknownst to me, my test was flawed, and what I thought was a tape drive getting reset was actually nothing of the sort. Unfortunately, there is still lots of Smartarray firmware that doesn't handle doing target resets right, and this code won't help in those cases, but it also shouldn't make things worse in those cases than they already are. Signed-off-by: Stephen M. Cameron <scameron@beardog.cca.cpqcorp.net> Cc: Mike Miller <mikem@beardog.cca.cpqcorp.net> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* cciss: factor out core of sendcmd() for a more sane interfaceStephen M. Cameron2009-06-021-116/+109
| | | | | | | | | | | | Factor out the core of sendcmd() to provide a simpler interface which exposes all the error information to the caller and make the original sendcmd use this new function. Rationale: The SCSI error handling routines need to send commands with interrupts turned off, but they also need access to the full error information. Signed-off-by: Stephen M. Cameron <scameron@beardog.cca.cpqcorp.net> Cc: Mike Miller <mikem@beardog.cca.cpqcorp.net> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* block: Do away with the notion of hardsect_sizeMartin K. Petersen2009-05-221-3/+3
| | | | | | | | | | | | | | 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: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* block: implement and enforce request peek/start/fetchTejun Heo2009-05-111-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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: Tejun 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: Jens Axboe <jens.axboe@oracle.com>
* block: convert to pos and nr_sectors accessorsTejun Heo2009-05-111-11/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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: Tejun Heo <tj@kernel.org> Acked-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Tested-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Grant Likely <grant.likely@secretlab.ca> Tested-by: Adrian McMenamin <adrian@mcmen.demon.co.uk> Acked-by: Adrian McMenamin <adrian@mcmen.demon.co.uk> Acked-by: Mike 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: Jens Axboe <jens.axboe@oracle.com>
* block: add rq->resid_lenTejun Heo2009-05-111-9/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | rq->data_len served two purposes - the length of data buffer on issue and the residual count on completion. This duality creates some headaches. First of all, block layer and low level drivers can't really determine what rq->data_len contains while a request is executing. It could be the total request length or it coulde be anything else one of the lower layers is using to keep track of residual count. This complicates things because blk_rq_bytes() and thus [__]blk_end_request_all() relies on rq->data_len for PC commands. Drivers which want to report residual count should first cache the total request length, update rq->data_len and then complete the request with the cached data length. Secondly, it makes requests default to reporting full residual count, ie. reporting that no data transfer occurred. The residual count is an exception not the norm; however, the driver should clear rq->data_len to zero to signify the normal cases while leaving it alone means no data transfer occurred at all. This reverse default behavior complicates code unnecessarily and renders block PC on some drivers (ide-tape/floppy) unuseable. This patch adds rq->resid_len which is used only for residual count. While at it, remove now unnecessasry blk_rq_bytes() caching in ide_pc_intr() as rq->data_len is not changed anymore. Boaz : spotted missing conversion in osd Sergei : spotted too early conversion to blk_rq_bytes() in ide-tape [ Impact: cleanup residual count handling, report 0 resid by default ] Signed-off-by: Tejun Heo <tj@kernel.org> 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: Mike Miller <mike.miller@hp.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: Doug Gilbert <dgilbert@interlog.com> Cc: Mike Miller <mike.miller@hp.com> Cc: Eric Moore <Eric.Moore@lsi.com> Cc: Darrick J. Wong <djwong@us.ibm.com> Cc: Pete Zaitcev <zaitcev@redhat.com> Cc: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* Replace all DMA_nBIT_MASK macro with DMA_BIT_MASK(n)Yang Hongyang2009-04-131-1/+1
| | | | | | | | | | | | | | | | This is the second go through of the old DMA_nBIT_MASK macro,and there're not so many of them left,so I put them into one patch.I hope this is the last round. After this the definition of the old DMA_nBIT_MASK macro could be removed. Signed-off-by: Yang Hongyang <yanghy@cn.fujitsu.com> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Tony Lindgren <tony@atomide.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Cc: Greg KH <greg@kroah.com> Cc: Takashi Iwai <tiwai@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-blockLinus Torvalds2009-04-071-8/+109
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-linus' of git://git.kernel.dk/linux-2.6-block: loop: mutex already unlocked in loop_clr_fd() cfq-iosched: don't let idling interfere with plugging block: remove unused REQ_UNPLUG cfq-iosched: kill two unused cfqq flags cfq-iosched: change dispatch logic to deal with single requests at the time mflash: initial support cciss: change to discover first memory BAR cciss: kernel scan thread for MSA2012 cciss: fix residual count for block pc requests block: fix inconsistency in I/O stat accounting code block: elevator quiescing helpers
| * cciss: change to discover first memory BARMike Miller2009-04-071-5/+14
| | | | | | | | | | | | | | | | | | | | | | Add a method for discovering the first memory BAR. All Smart Array controllers to date have always had the the memory BAR as the first BAR. A new controller to be released later this year breaks that model. Signed-off-by: Mike Miller <mike.miller@hp.com> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| * cciss: kernel scan thread for MSA2012Mike Miller2009-04-071-2/+86
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The MSA2012 cannot inform the driver of configuration changes since all management is out of band. This is a departure from any storage we have supported in the past. We need some way to detect changes on the topology so we implement this kernel thread. In some instances there's nothing we can do from the driver (like LUN failure) so just print out a message. In the case where logical volumes are added or deleted we call rebuild_lun_table to refresh the driver's view of the world. Signed-off-by: Mike Miller <mike.miller@hp.com> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| * cciss: fix residual count for block pc requestsJens Axboe2009-04-071-1/+9
| | | | | | | | | | | | | | We must complete the full request, so store the request count and then set the ->data_len to the residual count from the hardware. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-14 17:43:43 +0000