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* [SCSI] sd: fix medium-removal bugAlan Stern2010-09-07
| | | | | | | | | | | | Commit 409f3499a2cfcd1e9c2857c53af7fcce069f027f (scsi/sd: remove big kernel lock) introduced a bug in the sd_release routine. Medium removal should be allowed when the number of open file references drops to 0, not when it becomes non-zero. This patch (as1414) adjusts the test to fix the bug. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
* [SCSI] sd, sym53c8xx: Remove warnings after vsprintf %pV introducation.David Miller2010-09-02
| | | | | | | | | | | | | GCC warns about empty printf format strings, and after the addition of %pV these existing such cases in the scsi driver layer were exposed enough for the compiler to start seeing them. Based almost entirely upon a patch by Joe Perches. [jejb: fix up sym53c8xx msg] Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
* scsi/sd.c: quiet all sparse noiseH Hartley Sweeten2010-08-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | In sd_store_cache_type the symbol 'len' is declared twice. Remove the second declaration to quiet the following sparse warning. warning: symbol 'len' shadows an earlier one In sd_probe the variable 'index' is declared as a u32. This variable is used in a call to ida_get_new which is expecting an int *. Make the variable an int to quiet the following sparse warning. warning: incorrect type in argument 2 (different signedness) There are 4 symbols in the file that are not exported and produce the following sparse warnings. warning: symbol 'sd_cdb_cache' was not declared. Should it be static? warning: symbol 'sd_cdb_pool' was not declared. Should it be static? warning: symbol 'sd_read_protection_type' was not declared. Should it be static? warning: symbol 'sd_read_app_tag_own' was not declared. Should it be static? Make them static to quiet the warnings. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Cc: James E.J. Bottomley <James.Bottomley@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'for-2.6.36' of git://git.kernel.dk/linux-2.6-blockLinus Torvalds2010-08-10
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-2.6.36' of git://git.kernel.dk/linux-2.6-block: (149 commits) block: make sure that REQ_* types are seen even with CONFIG_BLOCK=n xen-blkfront: fix missing out label blkdev: fix blkdev_issue_zeroout return value block: update request stacking methods to support discards block: fix missing export of blk_types.h writeback: fix bad _bh spinlock nesting drbd: revert "delay probes", feature is being re-implemented differently drbd: Initialize all members of sync_conf to their defaults [Bugz 315] drbd: Disable delay probes for the upcomming release writeback: cleanup bdi_register writeback: add new tracepoints writeback: remove unnecessary init_timer call writeback: optimize periodic bdi thread wakeups writeback: prevent unnecessary bdi threads wakeups writeback: move bdi threads exiting logic to the forker thread writeback: restructure bdi forker loop a little writeback: move last_active to bdi writeback: do not remove bdi from bdi_list writeback: simplify bdi code a little writeback: do not lose wake-ups in bdi threads ... Fixed up pretty trivial conflicts in drivers/block/virtio_blk.c and drivers/scsi/scsi_error.c as per Jens.
| * scsi: use REQ_TYPE_FS for flush requestFUJITA Tomonori2010-08-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | scsi-ml uses REQ_TYPE_BLOCK_PC for flush requests from file systems. The definition of REQ_TYPE_BLOCK_PC is that we don't retry requests even when we can (e.g. UNIT ATTENTION) and we send the response to the callers (then the callers can decide what they want). We need a workaround such as the commit 77a4229719e511a0d38d9c355317ae1469adeb54 to retry BLOCK_PC flush requests. We will need the similar workaround for discard requests too since SCSI-ml handle them as BLOCK_PC internally. This uses REQ_TYPE_FS for flush requests from file systems instead of REQ_TYPE_BLOCK_PC. scsi-ml retries only REQ_TYPE_FS requests that have data to transfer when we can retry them (e.g. UNIT_ATTENTION). However, we also need to retry REQ_TYPE_FS requests without data because the callers don't. This also changes scsi_check_sense() to retry all the REQ_TYPE_FS requests when appropriate. Thanks to scsi_noretry_cmd(), REQ_TYPE_BLOCK_PC requests don't be retried as before. Note that basically, this reverts the commit 77a4229719e511a0d38d9c355317ae1469adeb54 since now we use REQ_TYPE_FS for flush requests. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
| * scsi: convert discard to REQ_TYPE_FS from REQ_TYPE_BLOCK_PCFUJITA Tomonori2010-08-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Jens, any reason why this isn't included in your for-2.6.36 yet? = From: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Subject: [PATCH resend] scsi: convert discard to REQ_TYPE_FS from REQ_TYPE_BLOCK_PC The block layer (file systems) sends discard requests as REQ_TYPE_FS (the role of REQ_TYPE_FS is that setting up commands and interpreting the results). But SCSI-ml treats discard requests as REQ_TYPE_BLOCK_PC. scsi-ml can handle discard requests as REQ_TYPE_FS easily. scsi_setup_discard_cmnd() sets up struct request and the bio nicely. Only remaining issue is that discard requests can't be completed partially so we need to modify sd_done. This conversion also fixes the problem that discard requests aren't retried when possible (e.g. UNIT ATTENTION). Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
| * scsi/sd: remove big kernel lockArnd Bergmann2010-08-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Every user of the BKL in the sd driver is the result of the pushdown from the block layer into the open/close/ioctl functions. The only place that used to rely on the BKL is the sdkp->openers variable, which gets converted into an atomic_t. Nothing else seems to rely on the BKL, since the functions do not touch global data without holding another lock, and the open/close functions are still protected from concurrent execution using the bdev->bd_mutex. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: linux-scsi@vger.kernel.org Cc: "James E.J. Bottomley" <James.Bottomley@suse.de> Acked-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
| * block: push down BKL into .open and .releaseArnd Bergmann2010-08-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The open and release block_device_operations are currently called with the BKL held. In order to change that, we must first make sure that all drivers that currently rely on this have no regressions. This blindly pushes the BKL into all .open and .release operations for all block drivers to prepare for the next step. The drivers can subsequently replace the BKL with their own locks or remove it completely when it can be shown that it is not needed. The functions blkdev_get and blkdev_put are the only remaining users of the big kernel lock in the block layer, besides a few uses in the ioctl code, none of which need to serialize with blkdev_{get,put}. Most of these two functions is also under the protection of bdev->bd_mutex, including the actual calls to ->open and ->release, and the common code does not access any global data structures that need the BKL. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
| * block: push down BKL into .locked_ioctlArnd Bergmann2010-08-07
| | | | | | | | | | | | | | | | | | | | | | As a preparation for the removal of the big kernel lock in the block layer, this removes the BKL from the common ioctl handling code, moving it into every single driver still using it. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
| * scsi: fix discard page leakFUJITA Tomonori2010-08-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We leak a page allocated for discard on some error conditions (e.g. scsi_prep_state_check returns BLKPREP_DEFER in scsi_setup_blk_pc_cmnd). We unprep on requests that weren't prepped in the error path of scsi_init_io. It makes the error path to clean up scsi commands messy. Let's strictly apply the rule that we can't unprep on a request that wasn't prepped. Calling just scsi_put_command() in the error path of scsi_init_io() is enough. We don't set REQ_DONTPREP yet. scsi_setup_discard_cmnd can safely free a page on the error case with the above rule. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
| * scsi: need to reset unprep_rq_fn in sd_removeFUJITA Tomonori2010-08-07
| | | | | | | | | | | | | | | | | | | | | | This is for block's for-2.6.36. We need to reset q->unprep_rq_fn in sd_remove. Otherwise we hit kernel oops if we access to a scsi disk device via sg after removing scsi disk module. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
| * block: remove q->prepare_flush_fn completelyFUJITA Tomonori2010-08-07
| | | | | | | | | | | | | | | | | | This removes q->prepare_flush_fn completely (changes the blk_queue_ordered API). Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
| * scsi: stop using q->prepare_flush_fnFUJITA Tomonori2010-08-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | scsi-ml builds flush requests via q->prepare_flush_fn(), however, builds discard requests via q->prep_rq_fn. Using two different mechnisms for the similar requests (building commands in SCSI ULD) doesn't make sense. Handing both via q->prep_rq_fn makes the code design simpler. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: James Bottomley <James.Bottomley@suse.de> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
| * scsi: remove unused free discard page in sd_doneFUJITA Tomonori2010-08-07
| | | | | | | | | | | | | | | | - sd_done isn't called for pc request so we never call the code. - we use sd_unprep to free discard page now. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
| * scsi: add sd_unprep_fn to free discard pageFUJITA Tomonori2010-08-07
| | | | | | | | | | | | | | | | | | | | | | | | | | This fixes discard page leak by using q->unprep_rq_fn facility. q->unprep_rq_fn is called when all the data buffer (req->bio and scsi_data_buffer) in the request is freed. sd_unprep() uses rq->buffer to free discard page allocated in sd_prepare_discard(). Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
| * block: don't allocate a payload for discard requestChristoph Hellwig2010-08-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Allocating a fixed payload for discard requests always was a horrible hack, and it's not coming to byte us when adding support for discard in DM/MD. So change the code to leave the allocation of a payload to the lowlevel driver. Unfortunately that means we'll need another hack, which allows us to update the various block layer length fields indicating that we have a payload. Instead of hiding this in sd.c, which we already partially do for UNMAP support add a documented helper in the core block layer for it. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
| * block: remove wrappers for request type/flagsChristoph Hellwig2010-08-07
| | | | | | | | | | | | | | | | | | Remove all the trivial wrappers for the cmd_type and cmd_flags fields in struct requests. This allows much easier grepping for different request types instead of unwinding through macros. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
* | [SCSI] sd: add support for runtime PMAlan Stern2010-07-28
|/ | | | | | | | | | | | | | | | This patch (as1399) adds runtime-PM support to the sd driver. The support is unsophisticated: If a SCSI disk device is mounted, or if its device file is held open, then the device will not be runtime-suspended; otherwise it will (provided userspace gives permission by writing "auto" to the sysfs power/control attribute). In order to make this work, a dev_set_drvdata() call had to be moved from sd_probe_async() to sd_probe(). Also, a few lines of code were changed to use a local variable instead of recalculating the address of an embedded struct device. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
* SCSI: implement sd_unlock_native_capacity()Tejun Heo2010-06-02
| | | | | | | | | | | | Implement sd_unlock_native_capacity() method which calls into hostt->unlock_native_capacity() if implemented. This will be invoked by block layer if partitions extend beyond the end of the device and can be used to implement, for example, on-demand ATA host protected area unlocking. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
* [SCSI] Merge scsi-misc-2.6 into scsi-rc-fixes-2.6James Bottomley2010-05-18
|\ | | | | | | Signed-off-by: James Bottomley <James.Bottomley@suse.de>
| * [SCSI] sd: retry read_capacity on UNIT_ATTENTIONJames Bottomley2010-04-11
| | | | | | | | | | | | | | | | | | | | | | | | | | Hazard testing uncovered yet another bug in sd. Under heavy reset activity the retry counter might be exhausted and the command will be returned with sense UNIT_ATTENTION/0x29/00 (POWER ON, RESET, OR BUS DEVICE RESET OCCURRED). In those cases we should just increase the retry counter again, retrying one more to clear up this Unit Attention state. [jejb: update to work with RC16 devices and not to loop endlessly] Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
| * [SCSI] sd: quiet spurious error messages in READ_CAPACITY(16)Hannes Reinecke2010-04-11
| | | | | | | | | | | | | | | | | | | | | | | | sd always tries to submit a READ_CAPACITY(16) CDB, regardless whether the host actually supports it. queuecommand() will then return DID_ABORT, which is not qualified enough to detect the true cause here. So better check in sd_try_rc16 first if the cdblen is supported. Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
* | [SCSI] Enable retries for SYNCRONIZE_CACHE commands to fix I/O errorHannes Reinecke2010-05-05
| | | | | | | | | | | | | | | | | | | | | | | | Some arrays are giving I/O errors with ext3 filesystems when SYNCHRONIZE_CACHE gets a UNIT_ATTENTION. What is happening is that these commands have no retries, so the UNIT_ATTENTION causes the barrier to fail. We should be enable retries here to clear any transient error and allow the barrier to succeed. Signed-off-by: Hannes Reinecke <hare@suse.de> Cc: Stable Tree <stable@kernel.org> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
* | Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-blockLinus Torvalds2010-04-09
|\ \ | |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-linus' of git://git.kernel.dk/linux-2.6-block: (34 commits) cfq-iosched: Fix the incorrect timeslice accounting with forced_dispatch loop: Update mtime when writing using aops block: expose the statistics in blkio.time and blkio.sectors for the root cgroup backing-dev: Handle class_create() failure Block: Fix block/elevator.c elevator_get() off-by-one error drbd: lc_element_by_index() never returns NULL cciss: unlock on error path cfq-iosched: Do not merge queues of BE and IDLE classes cfq-iosched: Add additional blktrace log messages in CFQ for easier debugging i2o: Remove the dangerous kobj_to_i2o_device macro block: remove 16 bytes of padding from struct request on 64bits cfq-iosched: fix a kbuild regression block: make CONFIG_BLK_CGROUP visible Remove GENHD_FL_DRIVERFS block: Export max number of segments and max segment size in sysfs block: Finalize conversion of block limits functions block: Fix overrun in lcm() and move it to lib vfs: improve writeback_inodes_wb() paride: fix off-by-one test drbd: fix al-to-on-disk-bitmap for 4k logical_block_size ...
| * Merge branch 'master' into for-linusJens Axboe2010-03-19
| |\ | | | | | | | | | | | | | | | | | | Conflicts: block/Kconfig Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| * | Remove GENHD_FL_DRIVERFSNeilBrown2010-03-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This flag is not used, so best discarded. Signed-off-by: NeilBrown <neilb@suse.de> -- Hi Jens, I came across this recently - these are the only two occurances of "GENHD_FL_DRIVERFS" in the kernel, so it cannot be needed. NeilBrown Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* | | include cleanup: Update gfp.h and slab.h includes to prepare for breaking ↵Tejun Heo2010-03-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | implicit slab.h inclusion from percpu.h percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
* | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6Linus Torvalds2010-03-18
|\ \ \ | |_|/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (69 commits) [SCSI] scsi_transport_fc: Fix synchronization issue while deleting vport [SCSI] bfa: Update the driver version to 2.1.2.1. [SCSI] bfa: Remove unused header files and did some cleanup. [SCSI] bfa: Handle SCSI IO underrun case. [SCSI] bfa: FCS and include file changes. [SCSI] bfa: Modified the portstats get/clear logic [SCSI] bfa: Replace bfa_get_attr() with specific APIs [SCSI] bfa: New portlog entries for events (FIP/FLOGI/FDISC/LOGO). [SCSI] bfa: Rename pport to fcport in BFA FCS. [SCSI] bfa: IOC fixes, check for IOC down condition. [SCSI] bfa: In MSIX mode, ignore spurious RME interrupts when FCoE ports are in FW mismatch state. [SCSI] bfa: Fix Command Queue (CPE) full condition check and ack CPE interrupt. [SCSI] bfa: IOC recovery fix in fcmode. [SCSI] bfa: AEN and byte alignment fixes. [SCSI] bfa: Introduce a link notification state machine. [SCSI] bfa: Added firmware save clear feature for BFA driver. [SCSI] bfa: FCS authentication related changes. [SCSI] bfa: PCI VPD, FIP and include file changes. [SCSI] bfa: Fix to copy fpma MAC when requested by user space application. [SCSI] bfa: RPORT state machine: direct attach mode fix. ...
| * | [SCSI] sd: Fix VPD buffer allocationsMartin K. Petersen2010-03-03
| |/ | | | | | | | | | | | | | | | | | | | | Commit e3deec09 incorrectly assumed that the B0 and B1 page lengths were limited to 32 bytes. The B0 VPD page length is defined to be 64 bytes when the device supports thin provisioning. B1 is always defined to be 64 bytes. Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Reported-by: Dan Carpenter <error27@gmail.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
* | Merge branch 'for-next' into for-linusJiri Kosina2010-03-08
|\ \ | |/ |/| | | | | | | | | | | | | Conflicts: Documentation/filesystems/proc.txt arch/arm/mach-u300/include/mach/debug-macro.S drivers/net/qlge/qlge_ethtool.c drivers/net/qlge/qlge_main.c drivers/net/typhoon.c
| * tree-wide: Assorted spelling fixesDaniel Mack2010-02-09
| | | | | | | | | | | | | | | | | | | | | | In particular, several occurances of funny versions of 'success', 'unknown', 'therefore', 'acknowledge', 'argument', 'achieve', 'address', 'beginning', 'desirable', 'separate' and 'necessary' are fixed. Signed-off-by: Daniel Mack <daniel@caiaq.de> Cc: Joe Perches <joe@perches.com> Cc: Junio C Hamano <gitster@pobox.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* | [SCSI] Fix printing of failed 32-byte commandsMartin K. Petersen2010-02-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Having the large CDB allocation logic in sd.c means that scsi_io_completion does not have access to the command buffer. That in turn causes garbage to be printed when a 32-byte command fails. Move the command printing to sd_done where the command buffer is intact. Clear the command buffer pointer after the extended CDB has been freed. Make scsi_print_command ignore commands with NULL CDB pointers to inhibit printing of garbled command strings. Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
* | [SCSI] sd: Combine DIF/DIX error handlingMartin K. Petersen2010-02-08
| | | | | | | | | | | | | | | | | | DIF and DIX errors are handled identically at this point. Collapse the switch cases into one and let scsi_io_completion print result and sense data. Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
* | [SCSI] eliminate potential kmalloc failure in scsi_get_vpd_page()James Bottomley2010-01-18
|/ | | | | | | The best way to fix this is to eliminate the intenal kmalloc() and make the caller allocate the required amount of storage. Signed-off-by: James Bottomley <James.Bottomley@suse.de>
* [SCSI] sd: WRITE SAME(16) / UNMAP supportMartin K. Petersen2009-12-10
| | | | | | | | | | | | | Implement a function for handling discard requests that sends either WRITE SAME(16) or UNMAP(10) depending on parameters indicated by the device in the block limits VPD. Extract unmap constraints and report them to the block layer. Based in part by a patch by Christoph Hellwig <hch@lst.de>. Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
* [SCSI] sd: Support disks formatted with DIF Type 2Martin K. Petersen2009-10-02
| | | | | | | | | | | Disks formatted with DIF Type 2 reject READ/WRITE 6/10/12/16 commands when protection is enabled. Only the 32-byte variants are supported. Implement support for issusing 32-byte READ/WRITE and enable Type 2 drives in the protection type detection logic. Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
* [SCSI] sd: Detach DIF from block integrity infrastructureMartin K. Petersen2009-10-02
| | | | | | | | | | | | So far we have only issued DIF commands if CONFIG_BLK_DEV_INTEGRITY is enabled. However, communication between initiator and target should be independent of protection information DMA. There are DIF-only host adapters coming out that will be able to take advantage of this. Move the relevant DIF bits to sd.c. Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
* const: make block_device_operations constAlexey Dobriyan2009-09-22
| | | | | | 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>
* [SCSI] fix oops during scsi scanningJames Bottomley2009-09-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Chris Webb reported: p0# uname -a Linux f7ea8425-d45b-490f-a738-d181d0df6963.host.elastichosts.com 2.6.30.4-elastic-lon-p #2 SMP PREEMPT Thu Aug 20 14:30:50 BST 2009 x86_64 Intel(R) Xeon(R) CPU E5420 @ 2.50GHz GenuineIntel GNU/Linux p0# zgrep SCAN_ASYNC /proc/config.gz # CONFIG_SCSI_SCAN_ASYNC is not set p0# cat /var/log/kern/2009-08-20 [...] 15:27:10.485 kernel: scsi9 : iSCSI Initiator over TCP/IP 15:27:11.493 kernel: scsi 9:0:0:0: RAID IET Controller 0001 PQ: 0 ANSI: 5 15:27:11.493 kernel: scsi 9:0:0:0: Attached scsi generic sg6 type 12 15:27:11.495 kernel: scsi 9:0:0:1: Direct-Access IET VIRTUAL-DISK 0001 PQ: 0 ANSI: 5 15:27:11.495 kernel: sd 9:0:0:1: Attached scsi generic sg7 type 0 15:27:11.495 kernel: sd 9:0:0:1: [sdg] 4194304 512-byte hardware sectors: (2.14 GB/2.00 GiB) 15:27:11.495 kernel: sd 9:0:0:1: [sdg] Write Protect is off 15:27:11.495 kernel: sd 9:0:0:1: [sdg] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA 15:27:13.012 kernel: sdg:<6>scsi 9:0:0:1: [sdg] Unhandled error code 15:27:13.012 kernel: scsi 9:0:0:1: [sdg] Result: hostbyte=0x07 driverbyte=0x00 15:27:13.012 kernel: end_request: I/O error, dev sdg, sector 0 15:27:13.012 kernel: Buffer I/O error on device sdg, logical block 0 15:27:13.012 kernel: ldm_validate_partition_table(): Disk read failed. 15:27:13.012 kernel: unable to read partition table 15:27:13.014 kernel: BUG: unable to handle kernel NULL pointer dereference at 0000000000000010 15:27:13.014 kernel: IP: [<ffffffff803f0d77>] disk_part_iter_next+0x74/0xfd 15:27:13.014 kernel: PGD 82ad0b067 PUD 82cd7e067 PMD 0 15:27:13.014 kernel: Oops: 0000 [#1] PREEMPT SMP 15:27:13.014 kernel: last sysfs file: /sys/devices/platform/host9/session4/iscsi_session/session4/ifacename 15:27:13.014 kernel: CPU 5 15:27:13.014 kernel: Modules linked in: 15:27:13.014 kernel: Pid: 13999, comm: async/0 Not tainted 2.6.30.4-elastic-lon-p #2 X7DBN 15:27:13.014 kernel: RIP: 0010:[<ffffffff803f0d77>] [<ffffffff803f0d77>] disk_part_iter_next+0x74/0xfd 15:27:13.014 kernel: RSP: 0018:ffff88066afa3dd0 EFLAGS: 00010246 15:27:13.014 kernel: RAX: ffff88082b58a000 RBX: ffff88066afa3e00 RCX: 0000000000000000 15:27:13.014 kernel: RDX: 0000000000000000 RSI: ffff88082b58a000 RDI: 0000000000000000 15:27:13.014 kernel: RBP: ffff88066afa3df0 R08: ffff88066afa2000 R09: ffff8806a204f000 15:27:13.014 kernel: R10: 000000fb12c7d274 R11: ffff8806c2bf0628 R12: ffff88066afa3e00 15:27:13.014 kernel: R13: ffff88082c829a00 R14: 0000000000000000 R15: ffff8806bc50c920 15:27:13.014 kernel: FS: 0000000000000000(0000) GS:ffff88002818a000(0000) knlGS:0000000000000000 15:27:13.014 kernel: CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b 15:27:13.014 kernel: CR2: 0000000000000010 CR3: 000000082ade3000 CR4: 00000000000426e0 15:27:13.014 kernel: DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 15:27:13.014 kernel: DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 15:27:13.014 kernel: Process async/0 (pid: 13999, threadinfo ffff88066afa2000, task ffff8806c2bf05e0) 15:27:13.014 kernel: Stack: 15:27:13.014 kernel: 0000000000000000 ffff88066afa3e00 ffff88066afa3e00 ffff88082c829a00 15:27:13.014 kernel: ffff88066afa3e40 ffffffff80306feb ffff88082b58a000 0000000000000000 15:27:13.014 kernel: 0000000000000001 ffff8806bc50c920 ffff88066afa3e40 ffff88082b58a000 15:27:13.014 kernel: Call Trace: 15:27:13.014 kernel: [<ffffffff80306feb>] register_disk+0x122/0x13a 15:27:13.014 kernel: [<ffffffff803f0b0f>] add_disk+0xaa/0x106 15:27:13.014 kernel: [<ffffffff80493609>] sd_probe_async+0x198/0x25b 15:27:13.014 kernel: [<ffffffff80270482>] async_thread+0x10c/0x20d 15:27:13.014 kernel: [<ffffffff802545ff>] ? default_wake_function+0x0/0xf 15:27:13.014 kernel: [<ffffffff80270376>] ? async_thread+0x0/0x20d 15:27:13.014 kernel: [<ffffffff8026ad89>] kthread+0x55/0x80 15:27:13.014 kernel: [<ffffffff8022be6a>] child_rip+0xa/0x20 15:27:13.014 kernel: [<ffffffff8026ad34>] ? kthread+0x0/0x80 15:27:13.014 kernel: [<ffffffff8022be60>] ? child_rip+0x0/0x20 15:27:13.014 kernel: Code: c8 ff 80 e1 0c b9 00 00 00 00 0f 44 c1 41 83 cd ff 48 8d 7a 20 48 be ff ff ff ff 08 00 00 00 48 b9 00 00 00 00 08 00 00 00 eb 50 <8b> 42 10 41 bd 01 00 00 00 eb db 4c 63 c2 4e 8d 04 c7 4d 8b 20 15:27:13.015 kernel: RIP [<ffffffff803f0d77>] disk_part_iter_next+0x74/0xfd 15:27:13.015 kernel: RSP <ffff88066afa3dd0> 15:27:13.015 kernel: CR2: 0000000000000010 15:27:13.015 kernel: ---[ end trace 6104b56ef5590e25 ]--- The problem is caused because the async scanning split in sd.c doesn't hold any reference to the device when it kicks off the async piece. What's happening is that an iSCSI disconnect is destorying the device again *before* the async sd scanning thread even starts. Fix this by taking a reference before starting the thread and dropping it again when the thread completes. Reported-by: Chris Webb <chris@arachsys.com> Cc: Stable Tree <stable@kernel.org> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
* [SCSI] sd: Avoid sending extended inquiry to legacy devicesMartin K. Petersen2009-07-30
| | | | | | | | | | | | | | | Some USB devices crash when we send them an inquiry with the EVPD bit set, regardless of page requested (i.e. including page 0). We only need the extended inquiry to gain access to VPD pages 0xB0 and 0xB1. These appeared in SBC2 and SBC3 respectively, so we can restrict sending the extended inquiry to devices reporting SPC3 or higher. This fixes bugzilla.kernel.org #13657. Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> [jejb: added comment] Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* sd, sr: fix Driver 'sd' needs updating messageHannes Reinecke2009-06-21
| | | | | | | | | | | | If a SCSI ULD driver sets blk_queue_prep_rq(), it should clean it up itself on remove(), and not from the bus callbacks. This removes the need to hook into bus->remove(), which should not be used at the same time as driver->remove(). [jejb: fix sdkp initialisation problem due to mismerge] Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* sd: Block limits VPD supportMartin K. Petersen2009-06-21
| | | | | | | | Query the block limits VPD page and adjust queue minimum and optimal I/O sizes. Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* sd: Detect non-rotational devicesMartin K. Petersen2009-06-21
| | | | | | | Detect non-rotational devices and set the queue flag accordingly. Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* sd: Physical block size and alignment supportMartin K. Petersen2009-06-21
| | | | | | | | | | | Extract physical block size and lowest aligned LBA from READ CAPACITY(16) response and adjust queue parameters. Report physical block size and alignment when applicable. [jejb: fix up trailing whitespace] Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] Merge branch 'linus'James Bottomley2009-06-12
|\ | | | | | | | | | | | | | | | | Conflicts: drivers/message/fusion/mptsas.c fixed up conflict between req->data_len accessors and mptsas driver updates. Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
| * block: Do away with the notion of hardsect_sizeMartin K. Petersen2009-05-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * Merge branch 'master' into for-2.6.31Jens Axboe2009-05-22
| |\ | | | | | | | | | | | | | | | | | | | | | Conflicts: drivers/block/hd.c drivers/block/mg_disk.c Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| * | block: convert to pos and nr_sectors accessorsTejun Heo2009-05-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* | | [SCSI] sd: fix bug in SCSI async probingJames Bottomley2009-06-08
| |/ |/| | | | | | | | | | | | | | | | | The async split up of probing in sd.c created a potential failure case where something goes wrong with device_add(), but which we don't recover properly. Since, in general, asynchronous error handling is hard, move the device_add() into the asynchronous path (it should be fast) and make sure all the deferred processing cannot fail. Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* | [SCSI] fix sign extension with 1.5TB usb-storage LBD=yDave Hansen2009-04-27
|/ | | | | | | | | | | | Shifting an unsigned char implicitly casts it to a signed int. This caused 'lba' to sign-extend and Linux would then try READ CAPACITY 16 which was not supported by at least one drive. Using the get_unaligned_be*() helpers keeps us from having to worry about how the extension might occur. Signed-off-by: Dave Hansen <dave@linux.vnet.ibm.com> Reviewed-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-21 16:18:33 -0500