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* kernel/pm_qos_params.c: Remove unnecessary casts of private_dataJoe Perches2010-09-231-1/+1
| | | | | Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* fs/ecryptfs: Remove unnecessary casts of private_dataJoe Perches2010-09-231-1/+1
| | | | | Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* fs/seq_file.c: Remove unnecessary casts of private_dataJoe Perches2010-09-231-3/+3
| | | | | Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* arm: uengine.c: remove C99 commentsH Hartley Sweeten2010-09-231-9/+9
| | | | | | | | Comments should be /* */ not //. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Cc: Jiri Kosina <trivial@kernel.org> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* arm: scoop.c: remove C99 commentsH Hartley Sweeten2010-09-231-6/+6
| | | | | | | | Comments should be /* */ not //. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Cc: Jiri Kosina <trivial@kernel.org> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* Fix typo configue => configure in commentsThomas Weber2010-09-235-5/+5
| | | | | | Signed-off-by: Thomas Weber <weber@corscience.de> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* Fix typo: configuation => configurationThomas Weber2010-09-235-7/+7
| | | | | | Signed-off-by: Thomas Weber <weber@corscience.de> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* Fix typo interrest[ing|ed] => interest[ing|ed]Thomas Weber2010-09-212-3/+3
| | | | | | | Fix typos with interrest*. Signed-off-by: Thomas Weber <weber@corscience.de> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* Fix various typos of valid in commentsNikanth Karthikesan2010-09-216-10/+8
| | | | | | | Fix various typos of valid. Signed-off-by: Nikanth Karthikesan <knikanth@suse.de> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* Doc: Fix typo s/packages/packagedNikanth Karthikesan2010-09-211-1/+1
| | | | | | | Fix typo s/packages/packaged in Documentation/vm/numa_memory_policy.txt. Signed-off-by: Nikanth Karthikesan <knikanth@suse.de> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* Revert "drivers/usb: Remove unnecessary return's from void functions" partiallyJiri Kosina2010-09-021-0/+3
| | | | | | | | | This is a partial revert of 7f26b3a7533b ("drivers/usb: Remove unnecessary return's from void functions") as this hunk will go through USB tree due to conflict. Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* idr: describe how nextidp works in idr_get_next().Naohiro Aota2010-08-311-1/+2
| | | | | | | | | It was unclear in original kernel-doc how nextidp worked in idr_get_next(). Let's describe it. Signed-off-by: Naohiro Aota <naota@elisp.net> Acked-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* idr: fix kernel-doc warnings.Naohiro Aota2010-08-311-5/+5
| | | | | | | | | | | | | | | | | | Fix the following kernel-doc warnings. % perl scripts/kernel-doc lib/idr.c > /dev/null Warning(lib/idr.c:300): No description found for parameter 'starting_id' Warning(lib/idr.c:300): Excess function parameter 'start_id' description in 'idr_get_new_above' Warning(lib/idr.c:485): No description found for parameter 'idp' Warning(lib/idr.c:596): No description found for parameter 'nextidp' Warning(lib/idr.c:596): Excess function parameter 'id' description in 'idr_get_next' Warning(lib/idr.c:774): No description found for parameter 'starting_id' Warning(lib/idr.c:774): Excess function parameter 'staring_id' description in 'ida_get_new_above' Warning(lib/idr.c:918): No description found for parameter 'ida' Signed-off-by: Naohiro Aota <naota@elisp.net> Acked-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* MAINTAINERS: update broken web addressJustin P. Mattock2010-08-301-1/+1
| | | | | | | | The patch below updates a broken web address in the MAINTAINERS file. Signed-off-by: Justin P. Mattock <justinmattock@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* parport_pc: show the detection of a 2 serial port ITE8874 chipNiels de Vos2010-08-241-1/+1
| | | | | | | | | | | | The printk message for the 2 serial port version is obscured with a debug macro, unlike all other versions of the card. It should be changed to make the output equal for all detected models. Reference: https://bugzilla.redhat.com/show_bug.cgi?id=578616#c1 CC: Joe Krahn <krahn@niehs.nih.gov> Signed-off-by: Niels de Vos <ndevos@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* Kconfig: delete duplicate wordStephan Sperber2010-08-232-2/+2
| | | | | | | Deleted a word which apeared twice. Signed-off-by: Stephan Sperber <sperberstephan@googlemail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* Fix typo in Kconfig help textThomas Weber2010-08-231-1/+1
| | | | | | | Fix the name of the sensor: BMP086 => BMP085 Signed-off-by: Thomas Weber <weber@corscience.de> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* Use kzalloc in idedisk_prep_fn.Tao Ma2010-08-191-2/+1
| | | | | | Signed-off-by: Tao Ma <tao.ma@oracle.com> Acked-by: Jeff Garzik <jgarzik@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* Fix typo s/contenious/continuous in commentNikanth Karthikesan2010-08-181-2/+2
| | | | | | | Fix typo s/contenious/continuous in comment. Signed-off-by: Nikanth Karthikesan <knikanth@suse.de> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* Fix spelling mistake in jhashAnton Blanchard2010-08-181-1/+1
| | | | | | | Fix a spelling mistake. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* include/video/vga.h: update web address.Justin P. Mattock2010-08-161-1/+1
| | | | | | | | The below updates a broken web address to one(hopefully) thats the new correct address. Signed-off-by: Justin P. Mattock <justinmattock@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* vesafb: fix comment a typoJustin P. Mattock2010-08-161-1/+1
| | | | | Signed-off-by: Justin P. Mattock <justinmattock@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* paravirt: noreplace-paravirt is implemented for x86 and ia-64Jiri Kosina2010-08-161-1/+1
| | | | | | | | | kernel-parameters.txt lists 'noreplace-paravirt' parameter as being limited to X86-32, which is incorrect -- it's actually supported by x86-32, x86-64 and ia-64. Signed-off-by: Jiri Kosina <jkosina@suse.cz> Acked-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
* Merge branch 'master' into for-nextJiri Kosina2010-08-11978-18586/+39215
|\ | | | | | | | | Conflicts: fs/exofs/inode.c
| * Merge branch 'for-linus' of git://neil.brown.name/mdLinus Torvalds2010-08-1025-501/+740
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-linus' of git://neil.brown.name/md: (24 commits) md: clean up do_md_stop md: fix another deadlock with removing sysfs attributes. md: move revalidate_disk() back outside open_mutex md/raid10: fix deadlock with unaligned read during resync md/bitmap: separate out loading a bitmap from initialising the structures. md/bitmap: prepare for storing write-intent-bitmap via dm-dirty-log. md/bitmap: optimise scanning of empty bitmaps. md/bitmap: clean up plugging calls. md/bitmap: reduce dependence on sysfs. md/bitmap: white space clean up and similar. md/raid5: export raid5 unplugging interface. md/plug: optionally use plugger to unplug an array during resync/recovery. md/raid5: add simple plugging infrastructure. md/raid5: export is_congested test raid5: Don't set read-ahead when there is no queue md: add support for raising dm events. md: export various start/stop interfaces md: split out md_rdev_init md: be more careful setting MD_CHANGE_CLEAN md/raid5: ensure we create a unique name for kmem_cache when mddev has no gendisk ...
| | * Merge git://git.infradead.org/users/dwmw2/libraid-2.6 into for-linusNeilBrown2010-08-106465-223570/+447411
| | |\
| | | * Merge branch 'async' of macbook:git/btrfs-unstableDavid Woodhouse2010-08-0918-94/+97
| | | |\ | | | | | | | | | | | | | | | | | | | | | | | | | Conflicts: drivers/md/Makefile lib/raid6/unroll.pl
| | | | * async_tx: Move ASYNC_RAID6_TEST option to crypto/async_tx/, fix dependenciesDavid Woodhouse2009-10-292-13/+14
| | | | | | | | | | | | | | | | | | | | Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| | | | * md: Factor out RAID6 algorithms into lib/David Woodhouse2009-10-2917-81/+84
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We'll want to use these in btrfs too. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| | * | | md: clean up do_md_stopNeilBrown2010-08-081-16/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There is only one error exit from do_md_stop, so make that more explicit and discard the 'err' variable. Also drop the 'revalidate' variable by moving the unlock calls around. Signed-off-by: NeilBrown <neilb@suse.de>
| | * | | md: fix another deadlock with removing sysfs attributes.NeilBrown2010-08-082-14/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move the deletion of sysfs attributes from reconfig_mutex to open_mutex didn't really help as a process can try to take open_mutex while holding reconfig_mutex, so the same deadlock can happen, just requiring one more process to be involved in the chain. I looks like I cannot easily use locking to wait for the sysfs deletion to complete, so don't. The only things that we cannot do while the deletions are still pending is other things which can change the sysfs namespace: run, takeover, stop. Each of these can fail with -EBUSY. So set a flag while doing a sysfs deletion, and fail run, takeover, stop if that flag is set. This is suitable for 2.6.35.x Cc: stable@kernel.org Signed-off-by: NeilBrown <neilb@suse.de>
| | * | | md: move revalidate_disk() back outside open_mutexDan Williams2010-08-081-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit b821eaa5 "md: remove ->changed and related code" moved revalidate_disk() under open_mutex, and lockdep noticed. [ INFO: possible circular locking dependency detected ] 2.6.32-mdadm-locking #1 ------------------------------------------------------- mdadm/3640 is trying to acquire lock: (&bdev->bd_mutex){+.+.+.}, at: [<ffffffff811acecb>] revalidate_disk+0x5b/0x90 but task is already holding lock: (&mddev->open_mutex){+.+...}, at: [<ffffffffa055e07a>] do_md_stop+0x4a/0x4d0 [md_mod] which lock already depends on the new lock. It is suitable for 2.6.35.x Cc: <stable@kernel.org> Reported-by: Przemyslaw Czarnowski <przemyslaw.hawrylewicz.czarnowski@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: NeilBrown <neilb@suse.de>
| | * | | md/raid10: fix deadlock with unaligned read during resyncNeilBrown2010-08-071-0/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If the 'bio_split' path in raid10-read is used while resync/recovery is happening it is possible to deadlock. Fix this be elevating ->nr_waiting for the duration of both parts of the split request. This fixes a bug that has been present since 2.6.22 but has only started manifesting recently for unknown reasons. It is suitable for and -stable since then. Reported-by: Justin Bronder <jsbronder@gentoo.org> Tested-by: Justin Bronder <jsbronder@gentoo.org> Signed-off-by: NeilBrown <neilb@suse.de> Cc: stable@kernel.org
| | * | | md/bitmap: separate out loading a bitmap from initialising the structures.NeilBrown2010-07-263-23/+60
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | dm makes this distinction between ->ctr and ->resume, so we need to too. Also get the new bitmap_load to clear out the bitmap first, as this is most consistent with the dm suspend/resume approach Signed-off-by: NeilBrown <neilb@suse.de>
| | * | | md/bitmap: prepare for storing write-intent-bitmap via dm-dirty-log.NeilBrown2010-07-263-39/+99
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This allows md/raid5 to fully work as a dm target. Normally md uses a 'filemap' which contains a list of pages of bits each of which may be written separately. dm-log uses and all-or-nothing approach to writing the log, so when using a dm-log, ->filemap is NULL and the flags normally stored in filemap_attr are stored in ->logattrs instead. Signed-off-by: NeilBrown <neilb@suse.de>
| | * | | md/bitmap: optimise scanning of empty bitmaps.NeilBrown2010-07-261-10/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A bitmap is stored as one page per 2048 bits. If none of the bits are set, the page is not allocated. When bitmap_get_counter finds that a page isn't allocate, it just reports that one bit work of space isn't flagged, rather than reporting that 2048 bits worth of space are unflagged. This can cause searches for flagged bits (e.g. bitmap_close_sync) to do more work than is really necessary. So change bitmap_get_counter (when creating) to report a number of blocks that more accurately reports the range of the device for which no counter currently exists. Signed-off-by: NeilBrown <neilb@suse.de>
| | * | | md/bitmap: clean up plugging calls.NeilBrown2010-07-263-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1/ use md_unplug in bitmap.c as we will soon be using bitmaps under arrays with no queue attached. 2/ Don't bother plugging the queue when we set a bit in the bitmap. The reason for this was to encourage as many bits as possible to get set before we unplug and write stuff out. However every personality already plugs the queue after bitmap_startwrite either directly (raid1/raid10) or be setting STRIPE_BIT_DELAY which causes the queue to be plugged later (raid5). Signed-off-by: NeilBrown <neilb@suse.de>
| | * | | md/bitmap: reduce dependence on sysfs.NeilBrown2010-07-261-3/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For dm-raid45 we will want to use bitmaps in dm-targets which don't have entries in sysfs, so cope with the mddev not living in sysfs. Signed-off-by: NeilBrown <neilb@suse.de>
| | * | | md/bitmap: white space clean up and similar.NeilBrown2010-07-262-167/+136
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fixes some whitespace problems Fixed some checkpatch.pl complaints. Replaced kmalloc ... memset(0), with kzalloc Fixed an unlikely memory leak on an error path. Reformatted a number of 'if/else' sets, sometimes replacing goto with an else clause. Removed some old comments and commented-out code. Signed-off-by: NeilBrown <neilb@suse.de>
| | * | | md/raid5: export raid5 unplugging interface.NeilBrown2010-07-262-19/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Also remove remaining accesses to ->queue and ->gendisk when ->queue is NULL (As it is in a DM target). Signed-off-by: NeilBrown <neilb@suse.de>
| | * | | md/plug: optionally use plugger to unplug an array during resync/recovery.NeilBrown2010-07-263-3/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If an array doesn't have a 'queue' then md_do_sync cannot unplug it. In that case it will have a 'plugger', so make that available to the mddev, and use it to unplug the array if needed. Signed-off-by: NeilBrown <neilb@suse.de>
| | * | | md/raid5: add simple plugging infrastructure.NeilBrown2010-07-264-14/+93
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | md/raid5 uses the plugging infrastructure provided by the block layer and 'struct request_queue'. However when we plug raid5 under dm there is no request queue so we cannot use that. So create a similar infrastructure that is much lighter weight and use it for raid5. Signed-off-by: NeilBrown <neilb@suse.de>
| | * | | md/raid5: export is_congested testNeilBrown2010-07-262-7/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | the dm module will need this for dm-raid45. Also only access ->queue->backing_dev_info->congested_fn if ->queue actually exists. It won't in a dm target. Signed-off-by: NeilBrown <neilb@suse.de>
| | * | | raid5: Don't set read-ahead when there is no queueNeilBrown2010-07-261-15/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | dm-raid456 does not provide a 'queue' for raid5 to use, so we must make raid5 stop depending on the queue. First: read_ahead dm handles read-ahead adjustment fully in userspace, so simply don't do any readahead adjustments if there is no queue. Also re-arrange code slightly so all the accesses to ->queue are together. Finally, move the blk_queue_merge_bvec function into the 'if' as the ->split_io setting in dm-raid456 has the same effect. Signed-off-by: NeilBrown <neilb@suse.de>
| | * | | md: add support for raising dm events.NeilBrown2010-07-262-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | dm uses scheduled work to raise events to user-space. So allow md device to have work_structs and schedule them on an error. Signed-off-by: NeilBrown <neilb@suse.de>
| | * | | md: export various start/stop interfacesNeilBrown2010-07-262-8/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | export entry points for starting and stopping md arrays. This will be used by a module to make md/raid5 work under dm. Also stop calling md_stop_writes from md_stop, as that won't work well with dm - it will want to call the two separately. Signed-off-by: NeilBrown <neilb@suse.de>
| | * | | md: split out md_rdev_initNeilBrown2010-07-262-15/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This functionality will be needed separately in a subsequent patch, so split it into it's own exported function. Signed-off-by: NeilBrown <neilb@suse.de>
| | * | | md: be more careful setting MD_CHANGE_CLEANNeilBrown2010-07-262-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When MD_CHANGE_CLEAN is set we might block in md_write_start. So we should only set it when fairly sure that something will clear it. There are two places where it is set so as to encourage a metadata update to record the progress of resync/recovery. This should only be done if the internal metadata update mechanisms are in use, which can be tested by by inspecting '->persistent'. Signed-off-by: NeilBrown <neilb@suse.de>
| | * | | md/raid5: ensure we create a unique name for kmem_cache when mddev has no ↵NeilBrown2010-07-262-5/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | gendisk We will shortly allow md devices with no gendisk (they are attached to a dm-target instead). That will cause mdname() to return 'mdX'. There is one place where mdname really needs to be unique: when creating the name for a slab cache. So in that case, if there is no gendisk, you the address of the mddev formatted in HEX to provide a unique name. Signed-off-by: NeilBrown <neilb@suse.de>
| | * | | md/raid5: factor out code for changing size of stripe cache.NeilBrown2010-07-212-13/+27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Separate the actual 'change' code from the sysfs interface so that it can eventually be called internally. Signed-off-by: NeilBrown <neilb@suse.de>
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