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2010-08-14Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6Linus Torvalds38-355/+1996
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (28 commits) [SCSI] qla4xxx: fix compilation warning [SCSI] make error handling more robust in the face of reservations [SCSI] tgt: fix warning [SCSI] drivers/message/fusion: Adjust confusing if indentation [SCSI] Return NEEDS_RETRY for eh commands with status BUSY [SCSI] ibmvfc: Driver version 1.0.9 [SCSI] ibmvfc: Fix terminate_rport_io [SCSI] ibmvfc: Fix rport add/delete race resulting in oops [SCSI] lpfc 8.3.16: Change LPFC driver version to 8.3.16 [SCSI] lpfc 8.3.16: FCoE Discovery and Failover Fixes [SCSI] lpfc 8.3.16: SLI Additions, updates, and code cleanup [SCSI] pm8001: introduce missing kfree [SCSI] qla4xxx: Update driver version to 5.02.00-k3 [SCSI] qla4xxx: Added AER support for ISP82xx [SCSI] qla4xxx: Handle outstanding mbx cmds on hung f/w scenarios [SCSI] qla4xxx: updated mbx_sys_info struct to sync with FW 4.6.x [SCSI] qla4xxx: clear AF_DPC_SCHEDULED flage when exit from do_dpc [SCSI] qla4xxx: Stop firmware before doing init firmware. [SCSI] qla4xxx: Use the correct request queue. [SCSI] qla4xxx: set correct value in sess->recovery_tmo ...
2010-08-12Merge branch 'params' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linusLinus Torvalds1-0/+2
* 'params' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus: (22 commits) param: don't deref arg in __same_type() checks param: update drivers/acpi/debug.c to new scheme param: use module_param in drivers/message/fusion/mptbase.c ide: use module_param_named rather than module_param_call param: update drivers/char/ipmi/ipmi_watchdog.c to new scheme param: lock if_sdio's lbs_helper_name and lbs_fw_name against sysfs changes. param: lock myri10ge_fw_name against sysfs changes. param: simple locking for sysfs-writable charp parameters param: remove unnecessary writable charp param: add kerneldoc to moduleparam.h param: locking for kernel parameters param: make param sections const. param: use free hook for charp (fix leak of charp parameters) param: add a free hook to kernel_param_ops. param: silence .init.text references from param ops Add param ops struct for hvc_iucv driver. nfs: update for module_param_named API change AppArmor: update for module_param_named API change param: use ops in struct kernel_param, rather than get and set fns directly param: move the EXPORT_SYMBOL to after the definitions. ...
2010-08-12Merge branch 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6Linus Torvalds3-30/+30
* 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6: mmc_spi: Fix unterminated of_match_table of/sparc: fix build regression from of_device changes of/device: Replace struct of_device with struct platform_device
2010-08-11scsi: 53c700: remove dma_is_consistent usageFUJITA Tomonori1-3/+0
This driver is the only user of dma_is_consistent(). We plan to remove this API. The driver uses the API in the following way: BUG_ON(!dma_is_consistent(hostdata->dev, pScript) && L1_CACHE_BYTES < dma_get_cache_alignment()); The above code tries to see if L1_CACHE_BYTES is greater than dma_get_cache_alignment() on sysmtes that can not allocate coherent memory (some old systems can't). James Bottomley exmplained that this is necesary because the driver packs the set of mailboxes into a single coherent area and separates the different usages by a L1 cache stride. So it's fatal if the dma He also pointed out that we can kill this checking because we don't hit this BUG_ON on all architectures that actually use the driver. (akpm: stolen from the scsi tree because dma-mapping-remove-dma_is_consistent-api.patch needs it) Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: James Bottomley <James.Bottomley@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-11drivers: scsi: use newly introduced hex_to_bin() methodAndy Shevchenko3-21/+19
Signed-off-by: Andy Shevchenko <ext-andriy.shevchenko@nokia.com> Cc: Adaptec OEM Raid Solutions <aacraid@adaptec.com> Cc: "James E.J. Bottomley" <James.Bottomley@suse.de> Cc: James Smart <james.smart@emulex.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-11drivers/scsi: use memdup_userJulia Lawall1-8/+3
Use memdup_user when user data is immediately copied into the allocated region. The semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression from,to,size,flag; position p; identifier l1,l2; @@ - to = \(kmalloc@p\|kzalloc@p\)(size,flag); + to = memdup_user(from,size); if ( - to==NULL + IS_ERR(to) || ...) { <+... when != goto l1; - -ENOMEM + PTR_ERR(to) ...+> } - if (copy_from_user(to, from, size) != 0) { - <+... when != goto l2; - -EFAULT - ...+> - } // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Cc: Doug Gilbert <dgilbert@interlog.com> Cc: Boaz Harrosh <bharrosh@panasas.com> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-11scsi: remove private BIT macrosAndrew Morton2-4/+2
A couple of scsi drivers define a BIT() macro, duplicating the one in bitops.h. Cc: Jing Huang <huangj@brocade.com> Cc: Robert Love <robert.w.love@intel.com> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-11scsi: fix bnx2i build errorsRandy Dunlap1-1/+2
bnx2i should depend on NET since it selects SCSI_ISCSI_ATTRS, which depends on NET. Also move the dependencies together. The "depends" change fixes multiple build errors when CONFIG_NET is not enabled: ERROR: "skb_trim" [drivers/scsi/scsi_transport_iscsi.ko] undefined! ERROR: "netlink_kernel_create" [drivers/scsi/scsi_transport_iscsi.ko] undefined! ERROR: "netlink_kernel_release" [drivers/scsi/scsi_transport_iscsi.ko] undefined! ERROR: "skb_pull" [drivers/scsi/scsi_transport_iscsi.ko] undefined! ERROR: "init_net" [drivers/scsi/scsi_transport_iscsi.ko] undefined! ERROR: "__alloc_skb" [drivers/scsi/scsi_transport_iscsi.ko] undefined! ERROR: "netlink_broadcast" [drivers/scsi/scsi_transport_iscsi.ko] undefined! ERROR: "kfree_skb" [drivers/scsi/scsi_transport_iscsi.ko] undefined! ERROR: "skb_put" [drivers/scsi/scsi_transport_iscsi.ko] undefined! Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: Anil Veerabhadrappa <anilgv@broadcom.com> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-11scsi: fix pmcraid build errorsRandy Dunlap1-1/+1
pmcraid should depend on NET since it uses netlink interfaces. This fixes multiple build errors when CONFIG_NET is not enabled: ERROR: "genl_register_family" [drivers/scsi/pmcraid.ko] undefined! ERROR: "genl_unregister_family" [drivers/scsi/pmcraid.ko] undefined! ERROR: "nla_put" [drivers/scsi/pmcraid.ko] undefined! ERROR: "init_net" [drivers/scsi/pmcraid.ko] undefined! ERROR: "__alloc_skb" [drivers/scsi/pmcraid.ko] undefined! ERROR: "netlink_broadcast" [drivers/scsi/pmcraid.ko] undefined! ERROR: "kfree_skb" [drivers/scsi/pmcraid.ko] undefined! ERROR: "skb_put" [drivers/scsi/pmcraid.ko] undefined! Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: Anil Ravindranath <anil_ravindranath@pmc-sierra.com> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-11bfa: wrong fcport H2I message tested in bfa_fcport_isr()Roel Kluin1-1/+1
It appears that the wrong fcport H2I message was tested Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Acked-by: Jing Huang <huangj@Brocade.COM> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-11drivers/scsi/ch.c: don't use vprintk as macroJoe Perches1-43/+44
It's an exported symbol of kernel/printk.c Rename vprintk and dprintk macros to more common VPRINTK and DPRINTK Add do { } while(0) around macros Add level to VPRINTK so KERN_CONT can be used a couple of times. Signed-off-by: Joe Perches <joe@perches.com> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-11scsi: bfa: correct onstack wait_queue_head declarationYong Zhang1-2/+2
Use DECLARE_WAIT_QUEUE_HEAD_ONSTACK to make lockdep happy Signed-off-by: Yong Zhang <yong.zhang0@gmail.com> Cc: Jing Huang <huangj@brocade.com> Cc: James E.J. Bottomley <James.Bottomley@suse.de> Cc: Roel Kluin <roel.kluin@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-11drivers/scsi/qla2xxx/qla_os.c: fix continuation line formatsJoe Perches1-2/+2
String constants that are continued on subsequent lines with \ will cause spurious whitespace in the resulting output. Signed-off-by: Joe Perches <joe@perches.com> Cc: James E.J. Bottomley <James.Bottomley@suse.de> Cc: Giridhar Malavali <giridhar.malavali@qlogic.com> Cc: Anirban Chakraborty <anirban.chakraborty@qlogic.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-11scsi/sd.c: quiet all sparse noiseH Hartley Sweeten1-6/+6
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>
2010-08-11scsi: remove superfluous NULL pointer check from scsi_kill_request()Bartlomiej Zolnierkiewicz1-6/+0
Dan's list included: drivers/scsi/scsi_lib.c +1365 scsi_kill_request(9) warning: variable derefenced in initializer 'cmd' drivers/scsi/scsi_lib.c +1365 scsi_kill_request(9) warning: variable derefenced before check 'cmd' We dereference cmd (and possible OOPS if cmd == NULL) before starting the request so just remove the superfluous debugging code altogether. [ bart: the potential NULL pointer dereference was finally fixed in (much later than mine) commit 03b1470 but my patch is still valid ] Reported-by: Dan Carpenter <error27@gmail.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Eugene Teo <eteo@redhat.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-11drivers/scsi/aic94xx/aic94xx_init.c: correct the size argument to kmallocJulia Lawall2-3/+3
In each case, the destination of the allocation has type struct **, so the elements of the array should have pointer type, not structure type. The semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @disable sizeof_type_expr@ type T; T **x; @@ x = <+...sizeof( - T + *x )...+> // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Cc: Rolf Eike Beer <eike-kernel@sf-tec.de> Cc: Joe Perches <joe@perches.com> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-11dc395x: decrease iteration for tag_number of max_command in start_scsi()Roel Kluin1-1/+1
The tag_number reaches dcb->max_command + 1 after the loop, but when the tag_number equals dcb->max_command an error message is already issued. The last iteration therefore appears obsolete. Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Cc: Oliver Neukum <oliver@neukum.name> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-11g_NCR5380: fix broken MMIO compilationOndrej Zary2-23/+26
The ifdefs are broken so the MMIO code is never compiled and so it's broken too. Fix them all. Untested as I don't have the hardware. Signed-off-by: Ondrej Zary <linux@rainbow-software.org> Reviewed-by: Andy Walls <awalls@md.metrocast.net> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-11g_NCR5380: remove misleading pnp error messageOndrej Zary1-3/+1
Remove misleading error message that appears after pnp card has been detected correctly. Signed-off-by: Ondrej Zary <linux@rainbow-software.org> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-11drivers/scsi: remove unnecessary NULL testJulia Lawall1-1/+0
At the point where cmnd is initialized, it is tested for NULL, so it doesn't have to be tested again here. A simplified version of the semantic match that detects this problem is as follows (http://coccinelle.lip6.fr/): // <smpl> @match exists@ expression x, E; identifier fld; @@ * x->fld ... when != \(x = E\|&x\) * x == NULL // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-11NCR5380: bit MR_DMA_MODE set twice in NCR5380_transfer_dma()Roel Kluin1-1/+3
Besides keeping the line short, the second setting of the MR_DMA_MODE bit was removed. Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-11gdth: unmap ccb_phys when scsi_add_host() fails in gdth_eisa_probe_one()Roel Kluin1-1/+1
unmap ccb_phys as well when scsi_add_host() fails Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Cc: Achim Leubner <achim_leubner@adaptec.com> Cc: James E.J. Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-11osst: fix read buffer overflowRoel Kluin1-1/+2
Check whether index is within bounds before testing the element. Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Cc: Willem Riede <osst@riede.org> Cc: James E.J. Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-11param: simple locking for sysfs-writable charp parametersRusty Russell1-0/+2
Since the writing to sysfs can free the old one, we need to block that when we access the charp variables. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Reviewed-by: Takashi Iwai <tiwai@suse.de> Tested-by: Phil Carmody <ext-phil.2.carmody@nokia.com> Cc: Jeff Dike <jdike@addtoit.com> Cc: Dan Williams <dcbw@redhat.com> Cc: John W. Linville <linville@tuxdriver.com> Cc: Jing Huang <huangj@brocade.com> Cc: James E.J. Bottomley <James.Bottomley@suse.de> Cc: Greg Kroah-Hartman <gregkh@suse.de> Cc: Johannes Berg <johannes@sipsolutions.net> Cc: David S. Miller <davem@davemloft.net> Cc: user-mode-linux-devel@lists.sourceforge.net Cc: libertas-dev@lists.infradead.org Cc: linux-wireless@vger.kernel.org Cc: netdev@vger.kernel.org Cc: linux-scsi@vger.kernel.org Cc: linux-usb@vger.kernel.org
2010-08-11[SCSI] qla4xxx: fix compilation warningVikas Chaudhary1-1/+2
Fix following warning: drivers/scsi/qla4xxx/ql4_nx.c: In function 'qla4_8xxx_get_flash_info': drivers/scsi/qla4xxx/ql4_nx.c:1952: warning: 'mid' may be used uninitialized in this function drivers/scsi/qla4xxx/ql4_nx.c:1952: note: 'mid' was declared here drivers/scsi/qla4xxx/ql4_nx.c:1952: warning: 'fid' may be used uninitialized in this function drivers/scsi/qla4xxx/ql4_nx.c:1952: note: 'fid' was declared here Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com> Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-08-11[SCSI] make error handling more robust in the face of reservationsJames Bottomley1-4/+6
commit 5f91bb050ecc4ff1d8d3d07edbe550c8f431c5e1 Author: Michael Reed <mdr@sgi.com> Date: Mon Aug 10 11:59:28 2009 -0500 [SCSI] reservation conflict after timeout causes device to be taken offline Flipped us from always returning failed to always returning success in the name of fixing the problem where reservation conflict returns from test unit ready cause the device always to be taken offline. Unfortuantely, it also introduced a problem whereby for commands other than test unit ready, the eh dispatcher thinks they succeeded when reservation conflict is returned, whereas in reality they failed. Fix this by only returning success for the test unit ready case. Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-08-11[SCSI] tgt: fix warningJoe Eykholt1-0/+1
Using scsi_tgt_lib in a new target module, we were getting the following warning and a stack traceback on every I/O completion: WARNING: at block/blk-core.c:1108 Which is claiming we may be leaking a bio. We don't leak bios (blk_rq_unmap_user should free them). Set rq->bio to NULL before calling scsi_host_put_command(). This was as advised by Fujita Tomonori. Signed-off-by: Joe Eykholt <jeykholt@cisco.com> Acked-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-08-11[SCSI] Return NEEDS_RETRY for eh commands with status BUSYHannes Reinecke1-0/+1
When the transport is busy and we're sending an EH command drivers occasionally return 'BUSY'. As this in most cases is the TUR command sent as part of the error recovery this is a sure way to make the error recovery escalate. Returning 'NEEDS_RETRY' here will just retry the TUR command and eventually abort the original command, thus making error handling far smoother. Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-08-10Merge branch 'for-2.6.36' of git://git.kernel.dk/linux-2.6-blockLinus Torvalds10-94/+124
* '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.
2010-08-07scsi: use REQ_TYPE_FS for flush requestFUJITA Tomonori2-17/+4
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>
2010-08-07scsi: convert discard to REQ_TYPE_FS from REQ_TYPE_BLOCK_PCFUJITA Tomonori1-1/+6
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>
2010-08-07scsi/sd: remove big kernel lockArnd Bergmann2-11/+8
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>
2010-08-07block: push down BKL into .open and .releaseArnd Bergmann2-1/+11
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>
2010-08-07block: push down BKL into .locked_ioctlArnd Bergmann2-10/+25
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>
2010-08-07scsi: fix discard page leakFUJITA Tomonori2-7/+10
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>
2010-08-07scsi: need to reset unprep_rq_fn in sd_removeFUJITA Tomonori1-0/+1
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>
2010-08-07block: remove q->prepare_flush_fn completelyFUJITA Tomonori1-1/+1
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>
2010-08-07scsi: stop using q->prepare_flush_fnFUJITA Tomonori1-10/+16
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>
2010-08-07scsi: remove unused free discard page in sd_doneFUJITA Tomonori1-9/+0
- 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>
2010-08-07scsi: add sd_unprep_fn to free discard pageFUJITA Tomonori1-1/+11
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>
2010-08-07block: implement an unprep function corresponding directly to prepJames Bottomley1-1/+1
Reviewed-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2010-08-07block: don't allocate a payload for discard requestChristoph Hellwig1-18/+34
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>
2010-08-07block: unify flags for struct bio and struct requestChristoph Hellwig1-4/+4
Remove the current bio flags and reuse the request flags for the bio, too. This allows to more easily trace the type of I/O from the filesystem down to the block driver. There were two flags in the bio that were missing in the requests: BIO_RW_UNPLUG and BIO_RW_AHEAD. Also I've renamed two request flags that had a superflous RW in them. Note that the flags are in bio.h despite having the REQ_ name - as blkdev.h includes bio.h that is the only way to go for now. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2010-08-07block: remove wrappers for request type/flagsChristoph Hellwig6-16/+17
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>
2010-08-07aha1532: remove ISA_DMA_THRESHOLD usageFUJITA Tomonori1-25/+0
We can safely remove ISA_DMA_THRESHOLD usage in aha1542. aha1542 uses ISA_DMA_THRESHOLD to see if: - the buffers in scatter/list are below 16MB. - scsi_host is below 16MB. Both checkings were added in the ancient times but aren't necessary nowadays since we properly bounce the buffers and allocate scsi_host below 16MB with non-zero unchecked_isa_dma. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: James Bottomley <James.Bottomley@suse.de> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2010-08-06Merge git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6Linus Torvalds5-83/+74
* git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6: pcmcia: avoid buffer overflow in pcmcia_setup_isa_irq pcmcia: do not request windows if you don't need to pcmcia: insert PCMCIA device resources into resource tree pcmcia: export resource information to sysfs pcmcia: use struct resource for PCMCIA devices, part 2 pcmcia: remove memreq_t pcmcia: move local definitions out of include/pcmcia/cs.h pcmcia: do not use io_req_t when calling pcmcia_request_io() pcmcia: do not use io_req_t after call to pcmcia_request_io() pcmcia: use struct resource for PCMCIA devices pcmcia: clean up cs.h pcmcia: use pcmica_{read,write}_config_byte pcmcia: remove cs_types.h pcmcia: remove unused flag, simplify headers pcmcia: remove obsolete CS_EVENT_ definitions pcmcia: split up central event handler pcmcia: simplify event callback pcmcia: remove obsolete ioctl Conflicts in: - drivers/staging/comedi/drivers/* - drivers/staging/wlags49_h2/wl_cs.c due to dev_info_t and whitespace changes
2010-08-06Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6Linus Torvalds2-4/+0
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6: (28 commits) driver core: device_rename's new_name can be const sysfs: Remove owner field from sysfs struct attribute powerpc/pci: Remove owner field from attribute initialization in PCI bridge init regulator: Remove owner field from attribute initialization in regulator core driver leds: Remove owner field from attribute initialization in bd2802 driver scsi: Remove owner field from attribute initialization in ARCMSR driver scsi: Remove owner field from attribute initialization in LPFC driver cgroupfs: create /sys/fs/cgroup to mount cgroupfs on Driver core: Add BUS_NOTIFY_BIND_DRIVER driver core: fix memory leak on one error path in bus_register() debugfs: no longer needs to depend on SYSFS sysfs: Fix one more signature discrepancy between sysfs implementation and docs. sysfs: fix discrepancies between implementation and documentation dcdbas: remove a redundant smi_data_buf_free in dcdbas_exit dmi-id: fix a memory leak in dmi_id_init error path sysfs: sysfs_chmod_file's attr can be const firmware: Update hotplug script Driver core: move platform device creation helpers to .init.text (if MODULE=n) Driver core: reduce duplicated code for platform_device creation Driver core: use kmemdup in platform_device_add_resources ...
2010-08-06[SCSI] ibmvfc: Driver version 1.0.9Brian King1-2/+2
Bump driver version. Signed-off-by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-08-06[SCSI] ibmvfc: Fix terminate_rport_ioBrian King2-169/+204
The ibmvfc driver was incorrectly obtaining a scsi_target pointer from an fc_rport. The way it is coded ensures that ibmvfc's terminate_rport_io handler does absolutely nothing. Fix this up to iterate through affected devices differently, sending cancel and abort task set as appropriate. Without this patch, fast_io_fail_tmo is broken for ibmvfc. Signed-off-by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-08-06[SCSI] ibmvfc: Fix rport add/delete race resulting in oopsBrian King2-0/+9
Commit 43c8da907ccc656935d1085701f4db83385d8a59 introduced a race condition which can occur when adding/deleting rports. There are two possible threads now that can be deleting rports in the ibmvfc driver, which can result in list_del being called twice, resulting in an oops. This patch adds a new state to the ibmvfc_target struct to indicate the target has been removed from the list and is in the process of being deleted. Signed-off-by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
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