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2005-11-04Merge master.kernel.org:/pub/scm/linux/kernel/git/paulus/powerpc-mergeLinus Torvalds1-4/+4
2005-11-02Merge git://brick.kernel.dk/data/git/linux-2.6-blockLinus Torvalds3-54/+35
2005-11-02Merge Paulus' treeStephen Rothwell3-4/+3
2005-11-01[PATCH] blk: fix dangling pointer access in __elv_add_requestTejun Heo1-1/+6
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>
2005-11-02merge filename and modify references to iseries/vio.hKelly Daly1-1/+1
Signed-off-by: Kelly Daly <kelly@au.ibm.com>
2005-11-02merge filename and modify references to iseries/hv_types.hKelly Daly1-1/+1
Signed-off-by: Kelly Daly <kelly@au.ibm.com>
2005-11-02merge filename and modify references to iseries/hv_lp_event.hKelly Daly1-1/+1
Signed-off-by: Kelly Daly <kelly@au.ibm.com>
2005-11-02merge filename and modify reference to iseries/hv_lp_config.hKelly Daly1-1/+1
Signed-off-by: Kelly Daly <kelly@au.ibm.com>
2005-11-01[BLOCK] aoe: update for combined io statisticsJens Axboe1-9/+4
Signed-off-by: Jens Axboe <axboe@suse.de>
2005-11-01[BLOCK] Unify the seperate read/write io stat fields into arraysJens Axboe2-43/+26
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>
2005-11-01[BLOCK] Update read/write block io statistics at completion timeJens Axboe1-8/+11
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>
2005-10-31[PATCH] noop-iosched: avoid corrupted request mergingJens Axboe1-0/+1
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>
2005-10-31[PATCH] Fix on-the-fly switch from cfq i/o schedulerJens Axboe1-3/+1
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>
2005-10-31Merge master.kernel.org:/home/rmk/linux-2.6-drvmodelLinus Torvalds1-1/+1
Manual #include fixups for clashes - there may be some unnecessary
2005-10-31Merge ../linux-2.6 by handPaul Mackerras20-1023/+613
2005-10-30[PATCH] fix missing includesTim Schmielau4-3/+11
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>
2005-10-30[PATCH] block cleanups: Fix iosched module refcount leakNate Diller1-1/+3
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>
2005-10-30[PATCH] block cleanups: Add kconfig default iosched submenuNate Diller2-17/+38
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>
2005-10-30[PATCH] delete 2 unreachable statements in drivers/block/paride/pf.cNorbert Kiesel1-4/+0
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>
2005-10-30[PATCH] cfq-iosched: move tasklist walk to elevator.cChristoph Hellwig3-22/+23
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>
2005-10-29Create platform_device.h to contain all the platform device details.Russell King1-1/+1
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>
2005-10-29[PATCH] blk: fix merge bug in as-ioschedTejun Heo1-0/+1
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>
2005-10-28[PATCH] ub: suppress gcc warnings for pointer castsPete Zaitcev1-2/+2
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(-)
2005-10-28Merge ../bleed-2.6Greg KH9-965/+500
2005-10-28[PATCH] Driver Core: fix up all callers of class_device_create()Greg Kroah-Hartman3-4/+4
The previous patch adding the ability to nest struct class_device changed the paramaters to the call class_device_create(). This patch fixes up all in-kernel users of the function. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-10-28[PATCH] add sysfs attr to re-emit device hotplug eventKay Sievers1-0/+25
A "coldplug + udevstart" can be simple like this: for i in /sys/block/*/*/uevent; do echo 1 > $i; done for i in /sys/class/*/*/uevent; do echo 1 > $i; done for i in /sys/bus/*/devices/*/uevent; do echo 1 > $i; done Signed-off-by: Kay Sievers <kay.sievers@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-10-28[PATCH] aoe: update to version 14Ed L. Cashin1-1/+1
Signed-off-by: "Ed L. Cashin" <ecashin@coraid.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Update driver version number to 14.
2005-10-28[PATCH] aoe: use get_unaligned for accesses in ATA id bufferEd L. Cashin1-7/+8
Signed-off-by: "Ed L. Cashin" <ecashin@coraid.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Use get_unaligned for possibly-unaligned multi-byte accesses to the ATA device identify response buffer.
2005-10-28Merge branch 'sx8' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/misc-2.6Linus Torvalds1-14/+37
2005-10-28Merge branch 'elevator-switch' of git://brick.kernel.dk/data/git/linux-2.6-blockLinus Torvalds2-158/+61
Manual fixup for trivial "gfp_t" changes.
2005-10-28Merge branch 'generic-dispatch' of git://brick.kernel.dk/data/git/linux-2.6-blockLinus Torvalds6-773/+376
2005-10-28Merge branch 'for-linus' of git://brick.kernel.dk/data/git/linux-2.6-blockLinus Torvalds2-16/+22
2005-10-28[PATCH] gfp_t: remaining bits of drivers/*Al Viro2-2/+2
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-28[PATCH] gfp_t: block layer coreAl Viro5-15/+15
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-28[BLOCK] Leftover reference to ->max_back_kbJens Axboe1-1/+0
Signed-off-by: Jens Axboe <axboe@suse.de>
2005-10-28[BLOCK] elevator switch fixes/cleanupJens Axboe2-5/+5
- 100msec sleep is a little excessive, lots of requests can complete in that timeframe. Use 10msec instead. - Rename QUEUE_FLAG_BYPASS to QUEUE_FLAG_ELVSWITCH to indicate what is going on. Signed-off-by: Jens Axboe <axboe@suse.de>
2005-10-28[BLOCK] Reimplement elevator switchTejun Heo2-158/+62
This patch reimplements elevator switch. This patch assumes generic dispatch queue patchset is applied. * Each request is tagged with REQ_ELVPRIV flag if it has its elevator private data set. * Requests which doesn't have REQ_ELVPRIV flag set never enter iosched. They are always directly back inserted to dispatch queue. Of course, elevator_put_req_fn is called only for requests which have its REQ_ELVPRIV set. * Request queue maintains the current number of requests which have its elevator data set (elevator_set_req_fn called) in q->rq->elvpriv. * If a request queue has QUEUE_FLAG_BYPASS set, elevator private data is not allocated for new requests. To switch to another iosched, we set QUEUE_FLAG_BYPASS and wait until elvpriv goes to zero; then, we attach the new iosched and clears QUEUE_FLAG_BYPASS. New implementation is much simpler and main code paths are less cluttered, IMHO. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jens Axboe <axboe@suse.de>
2005-10-28[BLOCK] kill generic max_back_kb handlingTejun Heo1-5/+1
This patch kills max_back_kb handling from elv_dispatch_sort() and kills max_back_kb field from struct request_queue. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jens Axboe <axboe@suse.de>
2005-10-28[PATCH] 04/05 remove last_merge handling from ioschedsTejun Heo4-114/+8
Remove last_merge handling from all ioscheds. This patch removes merging capability of noop iosched. Signed-off-by: Tejun Heo <htejun@gmail.com>
2005-10-28[PATCH] 03/05 move last_merge handlin into generic elevator codeTejun Heo1-25/+18
Currently, both generic elevator code and specific ioscheds participate in the management and usage of last_merge. This and the following patches move last_merge handling into generic elevator code. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jens Axboe <axboe@suse.de>
2005-10-28[PATCH] 02/05: update ioscheds to use generic dispatch queueJens Axboe4-555/+187
This patch updates all four ioscheds to use generic dispatch queue. There's one behavior change in as-iosched. * In as-iosched, when force dispatching (ELEVATOR_INSERT_BACK), batch_data_dir is reset to REQ_SYNC and changed_batch and new_batch are cleared to zero. This prevernts AS from doing incorrect update_write_batch after the forced dispatched requests are finished. * In cfq-iosched, cfqd->rq_in_driver currently counts the number of activated (removed) requests to determine whether queue-kicking is needed and cfq_max_depth has been reached. With generic dispatch queue, I think counting the number of dispatched requests would be more appropriate. * cfq_max_depth can be lowered to 1 again. Original from Tejun Heo, modified version applied. Signed-off-by: Jens Axboe <axboe@suse.de>
2005-10-28[PATCH] elevator: leftover function declarationJens Axboe1-4/+0
Signed-off-by: Jens Axboe <axboe@suse.de>
2005-10-28[PATCH] generic dispatch fixesJens Axboe1-21/+12
- Split elv_dispatch_insert() into two functions - Rename rq_last_sector() to rq_end_sector() Signed-off-by: Jens Axboe <axboe@suse.de>
2005-10-28[PATCH] 01/05 Implement generic dispatch queueTejun Heo2-82/+183
Implements generic dispatch queue which can replace all dispatch queues implemented by each iosched. This reduces code duplication, eases enforcing semantics over dispatch queue, and simplifies specific ioscheds. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jens Axboe <axboe@suse.de>
2005-10-28[PATCH] fix try_module_get race in elevator_findTejun Heo1-10/+14
This patch removes try_module_get race in elevator_find. try_module_get should always be called with the spinlock protecting what the module init/cleanup routines register/unregister to held. In the case of elevators, we should be holding elv_list to avoid it going away between spin_unlock_irq and try_module_get. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jens Axboe <axboe@suse.de>
2005-10-28Following the same idea, it occurs to me that we should only updateChen, Kenneth W1-0/+3
disk stat when "now" is different from disk->stamp. Otherwise, we are again needlessly adding zero to the stats. Signed-off-by: Ken Chen <kenneth.w.chen@intel.com> Signed-off-by: Jens Axboe <axboe@suse.de>
2005-10-28[patch] remove gendisk->stamp_idle fieldChen, Kenneth W1-6/+5
struct gendisk has these two fields: stamp, stamp_idle. Update to stamp_idle is always in sync with stamp and they are always the same. Therefore, it does not add any value in having two fields tracking same timestamp. Suggest to remove it. Also, we should only update gendisk stats with non-zero value. Advantage is that we don't have to needlessly calculate memory address, and then add zero to the content. Signed-off-by: Ken Chen <kenneth.w.chen@intel.com> Signed-off-by: Jens Axboe <axboe@suse.de>
2005-10-24powerpc: set the driver.owner field for all vio driversStephen Rothwell1-1/+2
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
2005-10-24powerpc: don't duplicate name between vio_driver and device_driverStephen Rothwell1-2/+4
Just set the name field directly in the device_driver structure contained in the vio_driver struct. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
2005-10-22drivers/block/sx8: kill unused variableJeff Garzik1-1/+0
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