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* [PATCH] cciss: fix for deregister_diskMike Miller2005-12-13
| | | | | | | | | | | This patch adds setting our drv->queue = NULL back in deregister_disk. The drv->queue is part of our controller struct. blk_cleanup_queue works only on the queue in the gendisk struct. Signed-off-by: Mike Miller <mike.miller@hp.com> Cc: Jens Axboe <axboe@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] cciss: double put_disk()Jens Axboe2005-12-12
| | | | | | | | | | | | | | This undoes the put_disk patch I sent in before. If I had been paying attention I would have seen that we call put_disk from free_hba during driver unload. That's the only time we want to call it. If it's called from deregister disk we may remove the controller (cNd0) unintentionally. Signed-off-by: Mike Miller <mike.miller@hp.com> Signed-off-by: Jens Axboe <axboe@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] revert floppy-fix-read-only-handlingAndrew Morton2005-11-23
| | | | | | | | | | This fix causes problems on the very first floppy access - we haven't yet talked to the FDC so we don't know which state the write-protect tab is in. Revert for now. Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH 3/3] cciss: add put_disk into cleanup routinesmikem2005-11-18
| | | | | | | | | | Jeff Garzik pointed me to his code to see how to remove a disk from the system _properly_. Well, here it is... Every place we remove disks we are now testing before calling del_gendisk or blk_cleanup_queue and then call put_disk. Signed-off-by: Mike Miller <mike.miller@hp.com> Signed-off-by: Jens Axboe <axboe@suse.de>
* [PATCH 2/3] cciss: bug fix for BIG_PASS_THRUJens Axboe2005-11-18
| | | | | | | | | Applications using CCISS_BIG_PASSTHRU complained that the data written was zeros. The problem is that the buffer is being cleared after the user copy, unless the user copy has failed... Correct that logic. Signed-off-by: Mike Miller <mike.miller@hp.com> Signed-off-by: Jens Axboe <axboe@suse.de>
* [PATCH] cciss_scsi warning fixGrant Coady2005-11-15
| | | | | | | | | | drivers/block/cciss_scsi.c:264: warning: `print_bytes' defined but not used drivers/block/cciss_scsi.c:298: warning: `print_cmd' defined but not used Signed-off-by: Grant Coady <gcoady@gmail.com> Acked-by: Mike Miller <mike.miller@hp.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] packet writing oops fixPeter Osterlund2005-11-13
| | | | | | | | | | | There is an old bug in the pkt_count_states() function that causes stack corruption. When compiling with gcc 3.x or 2.x it is harmless, but gcc 4 allocates local variables differently, which makes the bug visible. Signed-off-by: Peter Osterlund <petero2@telia.com> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivialLinus Torvalds2005-11-11
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| * floppy: relocate devfs commentJames Nelson2005-11-08
| | | | | | | | | | | | Signed-off-by: James Nelson <james4765@gmail.com> Signed-off-by: Domen Puncer <domen@coderock.org> Signed-off-by: Adrian Bunk <bunk@stusta.de>
* | Merge by hand (whitespace conflicts in libata.h)James Bottomley2005-11-10
|\ \ | | | | | | | | | Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| * | [PATCH] add a file_permission helperChristoph Hellwig2005-11-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A few more callers of permission() just want to check for a different access pattern on an already open file. This patch adds a wrapper for permission() that takes a file in preparation of per-mount read-only support and to clean up the callers a little. The helper is not intended for new code, everything without the interface set in stone should use vfs_permission() Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * | [PATCH] drivers/block/pktcdvd.c: remove write-only variable in ↵Gabriel A. Devenyi2005-11-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | pkt_iosched_process_queue() Found this on Coverty's linux bug database (http://linuxbugsdb.coverity.com). The function pkt_iosched_process_queue makes a call to bdev_get_queue and stores the result but never uses it, so it looks like it can be safely removed. Signed-off-by: Gabriel A. Devenyi <ace@staticwave.ca> Signed-off-by: Adrian Bunk <bunk@stusta.de> Acked-by: Peter Osterlund <petero2@telia.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * | [PATCH] changing CONFIG_LOCALVERSION rebuilds too much, for no good reasonOlaf Hering2005-11-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch removes almost all inclusions of linux/version.h. The 3 #defines are unused in most of the touched files. A few drivers use the simple KERNEL_VERSION(a,b,c) macro, which is unfortunatly in linux/version.h. There are also lots of #ifdef for long obsolete kernels, this was not touched. In a few places, the linux/version.h include was move to where the LINUX_VERSION_CODE was used. quilt vi `find * -type f -name "*.[ch]"|xargs grep -El '(UTS_RELEASE|LINUX_VERSION_CODE|KERNEL_VERSION|linux/version.h)'|grep -Ev '(/(boot|coda|drm)/|~$)'` search pattern: /UTS_RELEASE\|LINUX_VERSION_CODE\|KERNEL_VERSION\|linux\/\(utsname\|version\).h Signed-off-by: Olaf Hering <olh@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * | [PATCH] fix floppy.c to store correct ro/rw status in underlying gendiskJon Masters2005-11-09
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Evgeny Stambulchik found that doing the following always worked: # mount /dev/fd0 /mnt/floppy/ mount: block device /dev/fd0 is write-protected, mounting read-only # mount -o remount,rw /mnt/floppy # echo $? 0 This is the case because the block device /dev/fd0 is writeable but the floppy disk is marked protected. A fix is to simply have floppy_open mark the underlying gendisk policy according to reality (since the VFS doesn't provide a way for do_remount_sb to inquire as to the current device status). Signed-off-by: Jon Masters <jcm@jonmasters.org> Cc: Al Viro <viro@ftp.linux.org.uk> Cc: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [SCSI] remove Scsi_Device typedefChristoph Hellwig2005-11-09
| | | | | | | | Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* | Merge by hand (conflicts between pending drivers and kfree cleanups)James Bottomley2005-11-08
|\ \ | |/ |/| | | Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| * [SCSI] cciss: scsi error handlingmike.miller@hp.com2005-11-06
| | | | | | | | | | | | | | | | | | This patch adds SCSI error handling code to the SCSI portion of the cciss driver. Signed-off-by: Stephen M. Cameron <steve.cameron@hp.com> Acked-by: Mike Miller <mike.miller@hp.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* | powermac: Use a spinlock in swim3.c (floppy driver) instead of cliPaul Mackerras2005-11-07
| | | | | | | | Signed-off-by: Paul Mackerras <paulus@samba.org>
* | Merge branch 'block-dir' of git://brick.kernel.dk/data/git/linux-2.6-blockLinus Torvalds2005-11-07
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| * | [BLOCK] Move all core block layer code to new block/ directoryJens Axboe2005-11-04
| | | | | | | | | | | | | | | | | | | | | | | | drivers/block/ is right now a mix of core and driver parts. Lets move the core parts to a new top level directory. Al will move the fs/ related block parts to block/ next. Signed-off-by: Jens Axboe <axboe@suse.de>
* | | [PATCH] kfree cleanup: misc remaining driversJesper Juhl2005-11-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is the remaining misc drivers/ part of the big kfree cleanup patch. Remove pointless checks for NULL prior to calling kfree() in misc files in drivers/. Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Acked-by: Aristeu Sergio Rozanski Filho <aris@cathedrallabs.org> Acked-by: Roland Dreier <rolandd@cisco.com> Acked-by: Pierre Ossman <drzeus@drzeus.cx> Acked-by: Jean Delvare <khali@linux-fr.org> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Acked-by: Len Brown <len.brown@intel.com> Acked-by: "Antonino A. Daplas" <adaplas@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | [PATCH] kernel-docs: fix kernel-doc format problemsRandy Dunlap2005-11-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Convert to proper kernel-doc format. Some have extra blank lines (not allowed immed. after the function name) or need blank lines (after all parameters). Function summary must be only one line. Colon (":") in a function description does weird things (causes kernel-doc to think that it's a new section head sadly). Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | [PATCH] as: cooperating processesNick Piggin2005-11-07
| |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Introduce the notion of cooperating processes (those that submit requests close to one another), and use these statistics to make better choices about whether or not to do anticipatory waiting. Help and analysis from Seetharami Seelam <seelam@cs.utep.edu> Performance testing from Seelam: I set up my system and executed a couple of tests that I used for OLS. I tested with AS, cooperative process patch merged in -mm tree (which I called Nick, below) and the cooperative patch with modifications to as_update_iohist (which I called Seelam). I used a dual-processor (2.28GHz Pentium 4 Xeon) system, with 1 GB main memory and 1 MB L2 cache, running Linux 2.6.9. Only a single processor is used for the experiments. I used 7.2K RPM Maxtor 10GB drive configured with ext2 file system. Experiment 1 (ex1) consists of reading one Linux source trees using find . -type f -exec cat '{}' ';' > /dev/null. Experiment 2 (ex2) consists of reading two disjoint Linux source trees using find . -type f -exec cat '{}' ';' > /dev/null. Experiment 3 (ex3) consists of streaming read of a 2GB file in the background and 1 instance of the chunk reads in Experiment 1. Timings for reading the Linux source are shown below: AS Nick Seelam ex1: 0m25.813s 0m27.859s 0m27.640s ex2: 1m11.468s 1m13.918s 1m5.869s ex3: 81m44.352s 10m38.572s 6m47.994s The difference between the numbers in Experiment 3 must be due to the code in as_update_iohist. (akpm: that's not part of this patch. So this patch is "Nick"). Signed-off-by: Nick Piggin <npiggin@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | Merge master.kernel.org:/pub/scm/linux/kernel/git/paulus/powerpc-mergeLinus Torvalds2005-11-04
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| * Merge Paulus' treeStephen Rothwell2005-11-02
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| * | merge filename and modify references to iseries/vio.hKelly Daly2005-11-01
| | | | | | | | | | | | Signed-off-by: Kelly Daly <kelly@au.ibm.com>
| * | merge filename and modify references to iseries/hv_types.hKelly Daly2005-11-01
| | | | | | | | | | | | Signed-off-by: Kelly Daly <kelly@au.ibm.com>
| * | merge filename and modify references to iseries/hv_lp_event.hKelly Daly2005-11-01
| | | | | | | | | | | | Signed-off-by: Kelly Daly <kelly@au.ibm.com>
| * | merge filename and modify reference to iseries/hv_lp_config.hKelly Daly2005-11-01
| | | | | | | | | | | | Signed-off-by: Kelly Daly <kelly@au.ibm.com>
* | | Merge git://brick.kernel.dk/data/git/linux-2.6-blockLinus Torvalds2005-11-02
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| * | | [BLOCK] aoe: update for combined io statisticsJens Axboe2005-11-01
| | | | | | | | | | | | | | | | Signed-off-by: Jens Axboe <axboe@suse.de>
| * | | [BLOCK] Unify the seperate read/write io stat fields into arraysJens Axboe2005-11-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Instead of having ->read_sectors and ->write_sectors, combine the two into ->sectors[2] and similar for the other fields. This saves a branch several places in the io path, since we don't have to care for what the actual io direction is. On my x86-64 box, that's 200 bytes less text in just the core (not counting the various drivers). Signed-off-by: Jens Axboe <axboe@suse.de>
| * | | [BLOCK] Update read/write block io statistics at completion timeJens Axboe2005-11-01
| | |/ | |/| | | | | | | | | | | | | | | | | | | | | | Right now we do it at queueing time, which works alright for reads (since they are usually sync), but not for async writes since we can queue io a lot faster than we can complete it. This makes the vmstat output look extremely bursty. Signed-off-by: Jens Axboe <axboe@suse.de>
* / | [PATCH] blk: fix dangling pointer access in __elv_add_requestTejun Heo2005-11-02
|/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | cfq's add_req_fn callback may invoke q->request_fn directly and depending on low-level driver used and timing, a queued request may be finished & deallocated before add_req_fn callback returns. So, __elv_add_request must not access rq after it's passed to add_req_fn callback. This patch moves rq_mergeable test above add_req_fn(). This may result in q->last_merge pointing to REQ_NOMERGE request if add_req_fn callback sets it but as RQ_NOMERGE is checked again when blk layer actually tries to merge requests, this does not cause any problem. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] noop-iosched: avoid corrupted request mergingJens Axboe2005-10-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Tejun Heo notes: "I'm currently debugging this. The problem is that we are using the generic dispatch queue directly in the noop sched and merging is NOT allowed on dispatch queues but generic handling of last_merge tries to merge requests. I'm still trying to verify this, so I'll be back with results soon." In the meantime, disable merging for noop by setting REQ_NOMERGE in elevator_noop_add_request(). Eventually, we should add a noop_list and do the dispatching like in the other io schedulers. Merging is still beneficial for noop (and it has always done it). Signed-off-by: Jens Axboe <axboe@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] Fix on-the-fly switch from cfq i/o schedulerJens Axboe2005-10-31
| | | | | | | | | | | | | | | | Don't clear ->elevator_data on exit, if we are switching queues we are overwriting the data of the new io scheduler. Signed-off-by: Jens Axboe <axboe@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | Merge master.kernel.org:/home/rmk/linux-2.6-drvmodelLinus Torvalds2005-10-31
|\ \ | |/ |/| | | Manual #include fixups for clashes - there may be some unnecessary
| * Create platform_device.h to contain all the platform device details.Russell King2005-10-29
| | | | | | | | | | | | | | | | Convert everyone who uses platform_bus_type to include linux/platform_device.h. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
* | Merge ../linux-2.6 by handPaul Mackerras2005-10-30
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| * | [PATCH] fix missing includesTim Schmielau2005-10-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I recently picked up my older work to remove unnecessary #includes of sched.h, starting from a patch by Dave Jones to not include sched.h from module.h. This reduces the number of indirect includes of sched.h by ~300. Another ~400 pointless direct includes can be removed after this disentangling (patch to follow later). However, quite a few indirect includes need to be fixed up for this. In order to feed the patches through -mm with as little disturbance as possible, I've split out the fixes I accumulated up to now (complete for i386 and x86_64, more archs to follow later) and post them before the real patch. This way this large part of the patch is kept simple with only adding #includes, and all hunks are independent of each other. So if any hunk rejects or gets in the way of other patches, just drop it. My scripts will pick it up again in the next round. Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * | [PATCH] block cleanups: Fix iosched module refcount leakNate Diller2005-10-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If the requested I/O scheduler is already in place, elevator_switch simply leaves the queue alone, and returns. However, it forgets to call elevator_put, so 'echo [current_sched] > /sys/block/[dev]/queue/scheduler' will leak a reference, causing the current_sched module to be permanently pinned in memory. Signed-off-by: Nate Diller <nate@namesys.com> Acked-by: Jens Axboe <axboe@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * | [PATCH] block cleanups: Add kconfig default iosched submenuNate Diller2005-10-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a kconfig submenu to select the default I/O scheduler, in case anticipatory is not compiled in or another default is preferred. Also, since no-op is always available, we should use it whenever the selected default is not. Signed-off-by: Nate Diller <nate@namesys.com> Acked-by: Jens Axboe <axboe@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * | [PATCH] delete 2 unreachable statements in drivers/block/paride/pf.cNorbert Kiesel2005-10-30
| | | | | | | | | | | | | | | | | | | | | | | | The last patch from Jens Axboe for drivers/block/paride/pf.c introduced pf_end_request() which sets pf_req to NULL. Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * | [PATCH] cfq-iosched: move tasklist walk to elevator.cChristoph Hellwig2005-10-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We're trying to get rid of as much as possible tasklist walks, or at least moving them to core code. This patch falls into the second category. Instead of walking the tasklist in cfq-iosched move that into elv_unregister. The added benefit is that with this change the as ioscheduler might be might unloadable more easily aswell. The new code uses read_lock instead of read_lock_irq because the tasklist_lock only needs irq disabling for writers. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Jens Axboe <axboe@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * | [PATCH] blk: fix merge bug in as-ioschedTejun Heo2005-10-29
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | as-iosched deals with aliased requests differently from other ioscheds. It links together aliased requests using rq->queuelist instead of spilling alises to dispatch queue like other ioscheds do. Requests linked in this way cannot be merged. Unfortunately, generic q->last_merge handling patch didn't take this into account and q->last_merge could be set to an aliased request resulting in Badness, corrupt list and eventually panic. This explicitly marks aliased requests to be unmergeable. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * [PATCH] ub: suppress gcc warnings for pointer castsPete Zaitcev2005-10-28
| | | | | | | | | | | | | | | | | | | | | | | | | | When building on a 64-bit platform, gcc produces a warning "cast of a pointer to an integer of a different size". The scatterlist.offset on the LHS is unsigned int, so I used that originally. Signed-off-by: Pete Zaitcev <zaitcev@yahoo.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> drivers/block/ub.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
| * Merge ../bleed-2.6Greg KH2005-10-28
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| | * Merge branch 'sx8' of ↵Linus Torvalds2005-10-28
| | |\ | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/misc-2.6
| | | * drivers/block/sx8: kill unused variableJeff Garzik2005-10-22
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| | | * drivers/block/sx8: several minor changesJeff Garzik2005-10-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * Newer hardware doesn't corrupt data when the queue depth is greater than one. Rather than force the user to recompile with a greater queue depth, make it a module parameter. * update copyright date * add MODULE_VERSION() * trim trailing whitespace * move CARM_SG_BOUNDARY to a separate enum, since its unsigned long * bump to version 1.0
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