aboutsummaryrefslogtreecommitdiffstats
path: root/block
Commit message (Collapse)AuthorAge
* compat_ioctl: move common block ioctls to compat_blkdev_ioctlArnd Bergmann2007-10-10
| | | | | | | | | | | | Make compat_blkdev_ioctl and blkdev_ioctl reflect the respective native versions. This is somewhat more efficient and makes it easier to keep the two in sync. Also get rid of the bogus handling for broken_blkgetsize and the duplicate entry for BLKRASET. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* Drop 'size' argument from bio_endio and bi_end_ioNeilBrown2007-10-10
| | | | | | | | | | | | | As bi_end_io is only called once when the reqeust is complete, the 'size' argument is now redundant. Remove it. Now there is no need for bio_endio to subtract the size completed from bi_size. So don't do that either. While we are at it, change bi_end_io to return void. Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* Don't decrement bi_size in bio_endioNeilBrown2007-10-10
| | | | | | | | | | | | | | | | | | | | | | | The only caller of bio_endio that does not pass the full bi_size is end_that_request_first. Also, no ->bi_end_io method is really interested in bi_size being decremented. So move the decrement and related code into ll_rw_blk and merge it with order_bio_endio to form req_bio_endio which does endio functionality specific to request completion. As some ->bi_end_io methods do check bi_size of 0, we set it thus for now, but that will go in the next patch. Signed-off-by: Neil Brown <neilb@suse.de> ### Diffstat output ./block/ll_rw_blk.c | 42 +++++++++++++++++++++++++++--------------- ./fs/bio.c | 23 +++++++++++------------ 2 files changed, 38 insertions(+), 27 deletions(-) diff .prev/block/ll_rw_blk.c ./block/ll_rw_blk.c Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* Remove flush_dry_bio_endioNeilBrown2007-10-10
| | | | | | | | | | | | | | | | | | The entire function of flush_dry_bio_endio is to undo the effects of bio_endio (when called on a barrier request). So remove the function and the call to bio_endio. This allows us to remove "bi_size" from "struct request_queue". Signed-off-by: Neil Brown <neilb@suse.de> ### Diffstat output ./block/ll_rw_blk.c | 39 ++------------------------------------- ./include/linux/blkdev.h | 1 - 2 files changed, 2 insertions(+), 38 deletions(-) diff .prev/block/ll_rw_blk.c ./block/ll_rw_blk.c Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* ll_rw_blk: blk_cpu_notifier should be __cpuinitdataSatyam Sharma2007-10-10
| | | | | | | | | | blk_cpu_notifier is marked as __devinitdata, but __devinitdata need not be __init even if HOTPLUG_CPU=n, which wastes space. It should be marked __cpuinitdata, and the callback itself as __cpuinit. Signed-off-by: Satyam Sharma <satyam@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* Fixup rq_for_each_segment() indentationJens Axboe2007-10-10
| | | | | | Remove one level of nesting where appropriate. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* Share code between init_request_from_bio and blk_rq_bio_prepNeilBrown2007-10-10
| | | | | | | | | | These have very similar functions and should share code where possible. Signed-off-by: Neil Brown <neilb@suse.de> diff .prev/block/ll_rw_blk.c ./block/ll_rw_blk.c Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* Stop exporting blk_rq_bio_prepNeilBrown2007-10-10
| | | | | | | | | | | | | | | | blk_rq_bio_prep is exported for use in exactly one place. That place can benefit from using the new blk_rq_append_bio instead. So - change dm-emc to call blk_rq_append_bio - stop exporting blk_rq_bio_prep, and - initialise rq_disk in blk_rq_bio_prep, as dm-emc needs it. Signed-off-by: Neil Brown <neilb@suse.de> diff .prev/block/ll_rw_blk.c ./block/ll_rw_blk.c Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* New function blk_req_append_bioNeilBrown2007-10-10
| | | | | | | | | | | | | | ll_back_merge_fn is currently exported to SCSI where is it used, together with blk_rq_bio_prep, in exactly the same way these functions are used in __blk_rq_map_user. So move the common code into a new function (blk_rq_append_bio), and don't export ll_back_merge_fn any longer. Signed-off-by: Neil Brown <neilb@suse.de> diff .prev/block/ll_rw_blk.c ./block/ll_rw_blk.c Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* Introduce rq_for_each_segment replacing rq_for_each_bioNeilBrown2007-10-10
| | | | | | | | | | | | | | | Every usage of rq_for_each_bio wraps a usage of bio_for_each_segment, so these can be combined into rq_for_each_segment. We define "struct req_iterator" to hold the 'bio' and 'index' that are needed for the double iteration. Signed-off-by: Neil Brown <neilb@suse.de> Various compile fixes by me... Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* Merge blk_recount_segments into blk_recalc_rq_segmentsNeilBrown2007-10-10
| | | | | | | | | | | | | | | | | | | blk_recalc_rq_segments calls blk_recount_segments on each bio, then does some extra calculations to handle segments that overlap two bios. If we merge the code from blk_recount_segments into blk_recalc_rq_segments, we can process the whole request one bio_vec at a time, and not need the messy cross-bio calculations. Then blk_recount_segments can be implemented by calling blk_recalc_rq_segments, passing it a simple on-stack request which stores just the bio. Signed-off-by: Neil Brown <neilb@suse.de> diff .prev/block/ll_rw_blk.c ./block/ll_rw_blk.c Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* shared tag queue barrier commentNick Piggin2007-09-14
| | | | | | | | | | | | | Should add some comments for the tag barriers (they won't be so important if we can switch over to the explicit _lock bitops, but for now we should make it clear). Jens' original patch said a barrier after the test_and_clear_bit was also required. I can't see why (and it would prevent the use of the _lock bitop). Acked-by: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> --
* Fix race with shared tag queue mapsJens Axboe2007-09-13
| | | | | | | | | | | | | | | | | | | | | | There's a race condition in blk_queue_end_tag() for shared tag maps, users include stex (promise supertrak thingy) and qla2xxx. The former at least has reported bugs in this area, not sure why we haven't seen any for the latter. It could be because the window is narrow and that other conditions in the qla2xxx code hide this. It's a real bug, though, as the stex smp users can attest. We need to ensure two things - the tag bit clearing needs to happen AFTER we cleared the tag pointer, as the tag bit clearing/setting is what protects this map. Secondly, we need to ensure that the visibility of the tag pointer and tag bit clear are ordered properly. [ I removed the SMP barriers - "test_and_clear_bit()" already implies all the required barriers. -- Linus ] Also see http://bugzilla.kernel.org/show_bug.cgi?id=7842 Signed-off-by: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Fix remap handling by blktraceAlan D. Brunelle2007-08-11
| | | | | | | | | | | | | This patch provides more information concerning REMAP operations on block IOs. The additional information provides clearer details at the user level, and supports post-processing analysis in btt. o Adds in partition remaps on the same device. o Fixed up the remap information in DM to be in the right order o Sent up mapped-from and mapped-to device information Signed-off-by: Alan D. Brunelle <alan.brunelle@hp.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* [SCSI] bsg: update sg_io_v4 structureFUJITA Tomonori2007-07-31
| | | | | | | | | | | | | | | | | This updates sg_io_v4 structure (based on Doug's RFC, release 1.3). The major changes are: - add dout_resid field - increase tag size to 64 bits to comply with SAM-4 and SRP - add dout_iovec_count and din_iovec_count dout_iovec_count and din_iovec_count aren't supported now. I'm not sure whether they will be supported or not but they were added for the possible future changes. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6Linus Torvalds2007-07-29
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6: (28 commits) [SCSI] mpt fusion: Changes in mptctl.c for logging support [SCSI] mpt fusion: Changes in mptfc.c mptlan.c mptsas.c and mptspi.c for logging support [SCSI] mpt fusion: Changes in mptscsih.c for logging support [SCSI] mpt fusion: Changes in mptbase.c for logging support [SCSI] mpt fusion: logging support in Kconfig, Makefile, mptbase.h and addition of mptdebug.h [SCSI] libsas: Fix potential NULL dereference in sas_smp_get_phy_events() [SCSI] bsg: Fix build for CONFIG_BLOCK=n [SCSI] aacraid: fix Sunrise Lake reset handling [SCSI] aacraid: add SCSI SYNCHONIZE_CACHE range checking [SCSI] add easyRAID to the no report luns blacklist [SCSI] advansys: lindent and other large, uninteresting changes [SCSI] aic79xx, aic7xxx: Fix incorrect width setting [SCSI] qla2xxx: fix to honor ignored parameters in sysfs attributes [SCSI] aacraid: draw line in sand, sundry cleanup and version update [SCSI] iscsi_tcp: Turn off bounce buffers [SCSI] libiscsi: fix cmd seqeunce number checking [SCSI] iscsi_tcp, ib_iser Enable module refcounting for iscsi host template [SCSI] libiscsi: make sure session is not blocked when removing host [SCSI] libsas: Remove PCI dependencies [SCSI] simscsi: convert to use the data buffer accessors ...
| * [SCSI] bsg: Fix build for CONFIG_BLOCK=nPaul Mundt2007-07-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BLK_DEV_BSG was added outside of the if BLOCK check, which allows it to be enabled when CONFIG_BLOCK=n. This leads to many screenlengths of errors, starting with a parse error on the request_queue_t definition. Obviously this wasn't intended for CONFIG_BLOCK=n usage, so just move the option back in to the block. Caught with a randconfig on sh. Signed-off-by: Paul Mundt <lethal@linux-sh.org> Acked-by: Jens Axboe <jens.axboe@oracle.com> Acked-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| * [SCSI] bsg: remove unnecessary code and commentsFUJITA Tomonori2007-07-23
| | | | | | | | | | | | | | | | - kill uhdr in bsg_command structure - it's not necessary to put SG v4 stuff to block/scsi_ioctl.c Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| * [SCSI] bsg: use lib/idr.c to find a unique minor numberFUJITA Tomonori2007-07-23
| | | | | | | | | | | | | | | | | | This replaces the current linear search for a unique minor number with lib/idr.c. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* | blktrace: use cpu_clock() instead of sched_clock()Ingo Molnar2007-07-27
| | | | | | | | | | | | | | | | use cpu_clock() instead of sched_clock(). (the latter is not a proper clock-source) Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* | bsg: Fix build for CONFIG_BLOCK=nPaul Mundt2007-07-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BLK_DEV_BSG was added outside of the if BLOCK check, which allows it to be enabled when CONFIG_BLOCK=n. This leads to many screenlengths of errors, starting with a parse error on the request_queue_t definition. Obviously this wasn't intended for CONFIG_BLOCK=n usage, so just move the option back in to the block. Caught with a randconfig on sh. Signed-off-by: Paul Mundt <lethal@linux-sh.org> -- block/Kconfig | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* | [BLOCK] Get rid of request_queue_t typedefJens Axboe2007-07-24
|/ | | | | | | | | Some of the code has been gradually transitioned to using the proper struct request_queue, but there's lots left. So do a full sweet of the kernel and get rid of this typedef and replace its uses with the proper type. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6Linus Torvalds2007-07-22
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (60 commits) [SCSI] libsas: make ATA functions selectable by a config option [SCSI] bsg: unexport sg v3 helper functions [SCSI] bsg: fix bsg_unregister_queue [SCSI] bsg: make class backlinks [SCSI] 3w-9xxx: add support for 9690SA [SCSI] bsg: fix bsg_register_queue error path [SCSI] ESP: Increase ESP_BUS_TIMEOUT to 275. [SCSI] libsas: fix scr_read/write users and update the libata documentation [SCSI] mpt fusion: update Kconfig help [SCSI] scsi_transport_sas: add destructor for bsg [SCSI] iscsi_tcp: buggered kmalloc() [SCSI] qla2xxx: Update version number to 8.02.00-k2. [SCSI] qla2xxx: Add ISP25XX support. [SCSI] qla2xxx: Use pci_try_set_mwi(). [SCSI] qla2xxx: Use PCI-X/PCI-Express read control interfaces. [SCSI] qla2xxx: Re-factor isp_operations to static structures. [SCSI] qla2xxx: Validate mid-layer 'underflow' during check-condition handling. [SCSI] qla2xxx: Correct setting of 'current' and 'supported' speeds during FDMI registration. [SCSI] qla2xxx: Generalize iIDMA support. [SCSI] qla2xxx: Generalize FW-Interface-2 support. ...
| * [SCSI] bsg: unexport sg v3 helper functionsFUJITA Tomonori2007-07-22
| | | | | | | | | | | | | | | | blk_fill_sghdr_rq, blk_unmap_sghdr_rq, and blk_complete_sghdr_rq were exported for bsg, however bsg was changed to support only sg v4. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| * [SCSI] bsg: fix bsg_unregister_queueFUJITA Tomonori2007-07-21
| | | | | | | | | | | | | | | | scsi_sysfs_add_sdev ignores the bsg_register_queue failure, so bsg_unregister_queue must check whether the queue has a bsg device. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| * [SCSI] bsg: make class backlinksJames Bottomley2007-07-21
| | | | | | | | | | | | | | | | | | | | | | | | | | Currently, bsg doesn't make class backlinks (a process whereby you'd get a link to bsg in the device directory in the same way you get one for sg). This is because the bsg device is uninitialised, so the class device has nothing it can attach to. The fix is to make the bsg device point to the cdevice of the entity creating the bsg, necessitating changing the bsg_register_queue() prototype into a form that takes the generic device. Acked-by: FUJITA Tomonori <tomof@acm.org> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| * [SCSI] bsg: fix bsg_register_queue error pathJames Bottomley2007-07-21
| | | | | | | | | | | | | | | | | | | | | | unfortunately, if IS_ERR(class_dev) is true, that means class_dev isn't null and the check in the error leg is pointless ... it's also asking for trouble to request unregistration of a device we haven't actually created (although it works currently). Fix by using explicit gotos and unregisters. Acked-by: FUJITA Tomonori <tomof@acm.org> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| * [SCSI] bsg: separate bsg and SCSI (so SCSI can be modular)James Bottomley2007-07-19
| | | | | | | | | | | | | | | | | | | | | | | | | | This patch moves the bsg registration into SCSI so that bsg no longer has a dependency on the scsi_interface_register API. This can be viewed as a temporary expedient until we can get universal bsg binding sorted out properly. Also use the sdev bus_id as the generic bsg name (to avoid clashes with the queue name). Acked-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* | cfq: Write-only stuff in CFQ data structuresAlexey Dobriyan2007-07-20
| | | | | | | | | | | | | | | | There are some leftover bits from the task cooperator patch, that was yanked out again. While it will get reintroduced, no point in having this write-only stuff in the tree. So yank it. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* | cfq: async queue allocation per priorityVasily Tarasov2007-07-20
| | | | | | | | | | | | | | | | | | | | | | | | If we have two processes with different ioprio_class, but the same ioprio_data, their async requests will fall into the same queue. I guess such behavior is not expected, because it's not right to put real-time requests and best-effort requests in the same queue. The attached patch fixes the problem by introducing additional *cfqq fields on cfqd, pointing to per-(class,priority) async queues. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* | mm: Remove slab destructors from kmem_cache_create().Paul Mundt2007-07-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Slab destructors were no longer supported after Christoph's c59def9f222d44bb7e2f0a559f2906191a0862d7 change. They've been BUGs for both slab and slub, and slob never supported them either. This rips out support for the dtor pointer from kmem_cache_create() completely and fixes up every single callsite in the kernel (there were about 224, not including the slab allocator definitions themselves, or the documentation references). Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* | some kmalloc/memset ->kzalloc (tree wide)Yoann Padioleau2007-07-19
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Transform some calls to kmalloc/memset to a single kzalloc (or kcalloc). Here is a short excerpt of the semantic patch performing this transformation: @@ type T2; expression x; identifier f,fld; expression E; expression E1,E2; expression e1,e2,e3,y; statement S; @@ x = - kmalloc + kzalloc (E1,E2) ... when != \(x->fld=E;\|y=f(...,x,...);\|f(...,x,...);\|x=E;\|while(...) S\|for(e1;e2;e3) S\) - memset((T2)x,0,E1); @@ expression E1,E2,E3; @@ - kzalloc(E1 * E2,E3) + kcalloc(E1,E2,E3) [akpm@linux-foundation.org: get kcalloc args the right way around] Signed-off-by: Yoann Padioleau <padator@wanadoo.fr> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Acked-by: Russell King <rmk@arm.linux.org.uk> Cc: Bryan Wu <bryan.wu@analog.com> Acked-by: Jiri Slaby <jirislaby@gmail.com> Cc: Dave Airlie <airlied@linux.ie> Acked-by: Roland Dreier <rolandd@cisco.com> Cc: Jiri Kosina <jkosina@suse.cz> Acked-by: Dmitry Torokhov <dtor@mail.ru> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Mauro Carvalho Chehab <mchehab@infradead.org> Acked-by: Pierre Ossman <drzeus-list@drzeus.cx> Cc: Jeff Garzik <jeff@garzik.org> Cc: "David S. Miller" <davem@davemloft.net> Acked-by: Greg KH <greg@kroah.com> Cc: James Bottomley <James.Bottomley@steeleye.com> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'bsg' of git://git.kernel.dk/data/git/linux-2.6-blockLinus Torvalds2007-07-17
|\ | | | | | | | | | | | | | | | | | | | | | | | | * 'bsg' of git://git.kernel.dk/data/git/linux-2.6-block: bsg: fix missing space in version print Don't define empty struct bsg_class_device if !CONFIG_BLK_DEV_BSG bsg: Kconfig updates bsg: minor cleanup bsg: device hash table cleanup bsg: fix initialization error handling bugs bsg: mark FUJITA Tomonori as bsg maintainer bsg: convert to dynamic major bsg: address various review comments
| * bsg: fix missing space in version printJens Axboe2007-07-17
| | | | | | | | | | | | | | Tomo introduced a bug in his commit, removing the space between "driver" and "version" in the init printk. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| * bsg: Kconfig updatesFUJITA Tomonori2007-07-17
| | | | | | | | | | | | | | | | | | - add the detailed explanation. - remove 'default y'. - make 'EXPERIMENTAL' keyword visible to the user in menu. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| * bsg: minor cleanupFUJITA Tomonori2007-07-17
| | | | | | | | | | | | | | | | - fix MODULE_DESCRIPTION typo. - unify MODULE_DESCRIPTION and bsg_version. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| * bsg: device hash table cleanupFUJITA Tomonori2007-07-17
| | | | | | | | | | | | | | | | - kill unused bsg_list_idx macro. - add bsg_dev_idx_hash() that returns an appropriate hlist_head. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| * bsg: fix initialization error handling bugsFUJITA Tomonori2007-07-17
| | | | | | | | | | | | | | | | | | | | This fixes the following bugs and cleans up the initialization code: - cdev_del is missing. - unregister_chrdev_region should be used instead of unregister_chrdev. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| * bsg: convert to dynamic majorJens Axboe2007-07-17
| | | | | | | | | | | | | | 240 was hardcoded, that was clearly a dumb mistake. Convert bsg to use alloc_chrdev_region() to retrieve a dynamic major. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| * bsg: address various review commentsJens Axboe2007-07-17
| | | | | | | | | | | | | | This address most of the comments made by Andrew. The two remaining are conversion to idr, and dynamic major. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* | unregister_blkdev(): return voidAkinobu Mita2007-07-17
| | | | | | | | | | | | | | | | | | | | Put WARN_ON and fixed all callers of unregister_blkdev(). Now we can make unregister_blkdev return void. Cc: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | unregister_blkdev(): do WARN_ON on failureAkinobu Mita2007-07-17
| | | | | | | | | | | | | | | | | | | | When unregister_blkdev() has failed, something wrong happened. This patch adds WARN_ON to notify of such badness. Cc: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Slab allocators: Replace explicit zeroing with __GFP_ZEROChristoph Lameter2007-07-17
|/ | | | | | | | | | | | | kmalloc_node() and kmem_cache_alloc_node() were not available in a zeroing variant in the past. But with __GFP_ZERO it is possible now to do zeroing while allocating. Use __GFP_ZERO to remove the explicit clearing of memory via memset whereever we can. Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Make BLK_DEV_BSG depend strictly on SCSI=yLinus Torvalds2007-07-16
| | | | | | | | | | | | | The SCSI code can be compiled modular, but BLK_DEV_BSG currently cannot, and depends on the SCSI layer. So make sure that it depends on the SCSI layer being compiled in, not just available as a module. Noticed by Jeff Garzik and S.Çağlar Onur. Cc: Jeff Garzik <jeff@garzik.org> Cc: Jens Axboe <jens.axboe@oracle.com> Cc: S.Çağlar Onur <caglar@pardus.org.tr> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Fix new generic block device SG compileLinus Torvalds2007-07-16
| | | | | | | | | | | We had a merge issue with the "dentry" field going away from the kobject, and being replaced by a sysfs_dirent field (named "sd") instead. That broke the BSG compile. Cc: Jens Axboe <jens.axboe@oracle.com> Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: James Bottomley <James.Bottomley@SteelEye.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* bsg: Kconfig updatesFUJITA Tomonori2007-07-16
| | | | | | | | | | | This updates bsg entry in Kconfig: - bsg supports sg v4 - bsg depends on SCSI - it might be better to mark it experimental for a while Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* bsg: add SCSI transport-level request supportFUJITA Tomonori2007-07-16
| | | | | | | | | | | This enables bsg to handle SCSI transport-level request like SAS management protocol (SMP). - add BSG_SUB_PROTOCOL_{SCSI_CMD, SCSI_TMF, SCSI_TRANSPORT} definitions. - SCSI transport-level requests skip blk_verify_command(). Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* bsg: add bidi supportFUJITA Tomonori2007-07-16
| | | | | | | bsg uses the rq->next_rq pointer for a bidi request. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* add a struct request pointer to the request structureFUJITA Tomonori2007-07-16
| | | | | | | | | | This adds a struct request pointer to the request structure for the second data phase (bidi for now). A request queue supporting bidi requests sets QUEUE_FLAG_BIDI. This prevents sending bidi requests to a non-bidi queue. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* bsg: fix the deadlock on discarding done commandsFUJITA Tomonori2007-07-16
| | | | | | | | The previous commit introduced a deadlock in discarding commands, because we forget to unlock the bd spinlock. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-22 16:22:13 -0500