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2009-02-04Blackfin arch: Add a few more instructions that can cause the trace buffer ↵Robin Getz
to be discontiguous Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-04Blackfin arch: Fix URLRobin Getz
Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-04Blackfin arch: cleanup bf54x ifdef mess in gpio codeMike Frysinger
merge more of the bf54x and !bf54x gpio code together to cut down on #ifdef mess Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-04Blackfin arch: Add one more check on `fp' to prevent double faultJie Zhang
Signed-off-by: Jie Zhang <jie.zhang@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-04Blackfin arch: explicit add a might sleep to gpio_freeUwe Kleine-Koenig
According to the documentation gpio_free should only be called from task context only. To make this more explicit add a might sleep to all implementations. This patch changes the gpio_free implementations for the blackfin architecture. Signed-off-by: Uwe Kleine-Koenig <ukleinek@strlen.de> Cc: David Brownell <david-b@pacbell.net> Acked-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2009-02-04Blackfin arch: don't accidently re-enable interruptsRobin Getz
Make sure we don't accidently re-enable interrupts if we are being called in atomic context Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-04Blackfin arch: Print out where the bootmode is coming from (for easier ↵Robin Getz
debugging). Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-04Blackfin arch: reset POLAR setting when acquiring a gpio for the first timeMichael Hennerich
when requesting a GPIO for the first time, the POLAR setting is not set to a sane state. this can lead to indeterminate behavior that cannot be resolved without an explicit write to the Blackfin port POLAR register. when requesting a GPIO for the first time via gpio_request(), the POLAR setting for the GPIO in question should be set to sane state. this should occur if the GPIO has not been allocated in any other way. some examples: - when doing something like "request_irq(); gpio_request();" on the same GPIO, the POLAR setting should not be reset. - when doing "gpio_request(); gpio_request();" on the same GPIO, the POLAR setting should be reset only the first time and not the second. Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-04Blackfin arch: Fix Bug - request lines with peripheral_request_list, but ↵Michael Hennerich
don't get freed with peripheral_free_list Remove erroneous check_gpio(ident) in peripheral_free() Reported-by: Michael McTernan <mmcternan@airvana.com> Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-04Blackfin arch: Fix Bug - Kernel does not boot if re-program clocksMichael Hennerich
On BF561 EBIU_SDGCTL bit 31 controls the SDRAM external data path width, typically set 0 for a 32-bit bus width. On other Blackfin derivatives this bit should be set by default. Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-04Blackfin arch: fix bug - Dmacopy failed in BF537-STAMPMike Frysinger
Dmacopy failed in BF537-STAMP when copy from SRAM to SDRAM and kernel will reboot automatically. Fixing by doing a SSYNC before mucking with DMA registers Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-04Blackfin arch: enable bfin_eth in bf51x by defaultSonic Zhang
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-04Blackfin arch: line up machine-/cpu- vars after BF54xM additionMike Frysinger
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-04Blackfin arch: add support for mobile ddr bf54x partsMike Frysinger
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-04Blackfin arch: scrub comments/whitespace/cvs keywordsMike Frysinger
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-03write-back: fix nr_to_write counterArtem Bityutskiy
Commit 05fe478dd04e02fa230c305ab9b5616669821dd3 introduced some @wbc->nr_to_write breakage. It made the following changes: 1. Decrement wbc->nr_to_write instead of nr_to_write 2. Decrement wbc->nr_to_write _only_ if wbc->sync_mode == WB_SYNC_NONE 3. If synced nr_to_write pages, stop only if if wbc->sync_mode == WB_SYNC_NONE, otherwise keep going. However, according to the commit message, the intention was to only make change 3. Change 1 is a bug. Change 2 does not seem to be necessary, and it breaks UBIFS expectations, so if needed, it should be done separately later. And change 2 does not seem to be documented in the commit message. This patch does the following: 1. Undo changes 1 and 2 2. Add a comment explaining change 3 (it very useful to have comments in _code_, not only in the commit). Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Acked-by: Nick Piggin <npiggin@suse.de> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-02-03Fix my email address in qd65xx.[ch]/pata_qdi.cSamuel Thibault
The @fnac.net will be shut down within a couple of months, so fix my email address. Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-02-03Merge branch 'linux-next' of git://git.infradead.org/ubifs-2.6Linus Torvalds
* 'linux-next' of git://git.infradead.org/ubifs-2.6: UBIFS: remove fast unmounting UBIFS: return sensible error codes UBIFS: remount ro fixes UBIFS: spelling fix 'date' -> 'data' UBIFS: sync wbufs after syncing inodes and pages UBIFS: fix LPT out-of-space bug (again) UBIFS: fix no_chk_data_crc UBIFS: fix assertions UBIFS: ensure orphan area head is initialized UBIFS: always clean up GC LEB space UBIFS: add re-mount debugging checks UBIFS: fix LEB list freeing UBIFS: simplify locking UBIFS: document dark_wm and dead_wm better UBIFS: do not treat all data as short term UBIFS: constify operations UBIFS: do not commit twice
2009-02-03Merge master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds
* master.kernel.org:/home/rmk/linux-2.6-arm: NVRAM depends on RTC_DRV_CMOS rename platform_driver name "flash" to "sa1100-mtd" annotate that [fp, #-4] is the saved lr Use __SPIN_LOCK_UNLOCKED to initialize bad_irq_desc.lock ARM: OMAP: fix fault in enter_full_retention() ARM: OMAP: Mask interrupts when disabling interrupts, v2 ARM: OMAP: gptimer min_delta_ns corrected ARM: OMAP: Fix hsmmc init, v2 ARM: OMAP: Fix omap34xx revision detection for ES3.1 ARM: OMAP: DMA: Fix uninitialized channel flags ARM: OMAP: Fix race in OMAP2/3 DMA IRQ handling ARM: OMAP: Fix McBSP spin_lock deadlock [ARM] 5366/1: fix shared memory coherency with VIVT L1 + L2 caches [ARM] call undefined instruction exception handler with irqs enabled [ARM] msm: fix build errors [ARM] etherh: continue fixing build failure
2009-02-03Merge branch 'upstream-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2 * 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2: ocfs2: add quota call to ocfs2_remove_btree_range() ocfs2: Wakeup the downconvert thread after a successful cancel convert ocfs2: Access the xattr bucket only before modifying it. configfs: Silence lockdep on mkdir(), rmdir() and configfs_depend_item() ocfs2: Fix possible deadlock in ocfs2_write_dquot() ocfs2: Push out dropping of dentry lock to ocfs2_wq
2009-02-03Merge branch 'for-linus' of git://oss.sgi.com/xfs/xfsLinus Torvalds
* 'for-linus' of git://oss.sgi.com/xfs/xfs: [XFS] Warn on transaction in flight on read-only remount xfs: Check buffer lengths in log recovery don't reallocate sxp variable passed into xfs_swapext
2009-02-03[XFS] Warn on transaction in flight on read-only remountFelix Blyakher
Till VFS can correctly support read-only remount without racing, use WARN_ON instead of BUG_ON on detecting transaction in flight after quiescing filesystem. Signed-off-by: Felix Blyakher <felixb@sgi.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
2009-02-03xfs: Check buffer lengths in log recoveryDave Chinner
Before trying to obtain, read or write a buffer, check that the buffer length is actually valid. If it is not valid, then something read in the recovery process has been corrupted and we should abort recovery. Reported-by: Eric Sesterhenn <snakebyte@gmx.de> Tested-by: Eric Sesterhenn <snakebyte@gmx.de> Reviewed-by: Christoph Hellwig <hch@infradead.org> Reviewed-by: Felix Blyakher <felixb@sgi.com> Signed-off-by: Dave Chinner <david@fromorbit.com> Signed-off-by: Felix Blyakher <felixb@sgi.com>
2009-02-03Merge branch 'master' of ↵Felix Blyakher
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 into for-linus
2009-02-03Merge branch 'upstream-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev * 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev: libata: implement HORKAGE_1_5_GBPS and apply it to WD My Book libata: add no penalty retry request for EH device handling routines libata: improve probe failure handling libata: add @spd_limit to sata_down_spd_limit() libata: clear dev->ering in smarter way libata: check onlineness before using SPD in sata_down_spd_limit() libata: move ata_dev_disable() to libata-eh.c libata: fix EH device failure handling sata_nv: ck804 has borked hardreset too ide/libata: fix ata_id_is_cfa() (take 4) libata: fix kernel-doc warnings ahci: add a module parameter to ignore the SSS flags for async scanning sata_mv: Fix chip type for Hightpoint RocketRaid 1740/1742 [libata] sata_sil: Fix compilation error with libata debugging enabled
2009-02-02libata: implement HORKAGE_1_5_GBPS and apply it to WD My BookTejun Heo
3Gbps is often much more prone to transmission failures. It's usually okay to let EH handle speed down after transmission failures but some WD My Book drives completely shutdown after certain transmission failures and after it only power cycling can revive them. Combined with the fact that external drives often end up with cable assembly which is longer than usual and more likely to have intervening gender, this makes these drives very likely to shutdown under certain configurations virtually rendering them unusable. This patch implements HOARKGE_1_5_GBPS and applies it to WD My Book such that 1.5Gbps is forced once the device is identified. Please take a look at the following bz for related reports. http://bugzilla.kernel.org/show_bug.cgi?id=9913 Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-02-02libata: add no penalty retry request for EH device handling routinesTejun Heo
Let -EAGAIN from EH device handling routines trigger EH retry without consuming its tries count. This will be used to implement link SPD horkage which requires hardreset to adjust SPD without affecting other EH decisions. As it bypasses the forward progress guarantee provided by the tries count, the requester is responsible for ensuring forward progress. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-02-02libata: improve probe failure handlingTejun Heo
When link is flaky at high speed, it isn't uncommon for a device to repeatedly fail probing sequence early after successfully negotiating high link speed. This often leads to consecutive hotplug events without successful probing. This patch improves libata EH such that it remembers probing trials and if there have been more than two unsuccessful trials in the past 60 seconds, slows down link speed to 1.5Gbps. As link speed negotiation is the duty of the PHY layer proper, the goal of this fallback mechanism is to provide the last resort when everything else fails, which unfortunately happens not too infrequently, so no fancy 6->3->1.5 speeding down or highest successful transmission speed seen kind of logics (yet). Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-02-02libata: add @spd_limit to sata_down_spd_limit()Tejun Heo
Add @spd_limit to sata_down_spd_limit() so that the caller can specify the SPD limit it wants. This parameter doesn't get in the way even when it's too low. The closest possible limit is applied. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-02-02libata: clear dev->ering in smarter wayTejun Heo
dev->ering used to be cleared together with the rest of ata_device in ata_dev_init() which is called whenever a probing event occurs. dev->ering is about to be used to track probing failures so it needs to remain persistent over multiple porbing events. This patch achieves this by doing the following. * Instead of CLEAR_OFFSET, define CLEAR_BEGIN and CLEAR_END and only clear between BEGIN and END. ering is moved after END. The split of persistent area is to allow hotter items remain at the head. * ering is explicitly cleared on ata_dev_disable() and when device attach succeeds. So, ering is persistent throug a device's life time (unless explicitly cleared of course) and also through periods inbetween disablement of an attached device and successful detection of the next one. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-02-02libata: check onlineness before using SPD in sata_down_spd_limit()Tejun Heo
sata_down_spd_limit() should check whether the link is online before using the SPD value to determine how to limit the link speed. Factor out onlineness test and test it from sata_down_spd_limit(). Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-02-02libata: move ata_dev_disable() to libata-eh.cTejun Heo
ata_dev_disable() is about to be more tightly integrated into EH logic. Move it to libata-eh.c. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-02-02libata: fix EH device failure handlingTejun Heo
The dev->pio_mode > XFER_PIO_0 test is there to avoid unnecessary speed down warning messages but it accidentally disabled SATA link spd down during configuration phase after reset where PIO mode is always zero. This patch fixes the problem by moving the test where it belongs. This makes libata probing sequence behave better when the connection is flaky at higher link speeds which isn't too uncommon for eSATA devices. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-02-02sata_nv: ck804 has borked hardreset tooTejun Heo
While playing with nvraid, I found out that rmmoding and insmoding often trigger hardreset failure on the first port (the second one was always okay). Seriously, how diverse can you get with hardreset behaviors? Anyways, make ck804 use noclassify variant too. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-02-02ide/libata: fix ata_id_is_cfa() (take 4)Sergei Shtylyov
When checking for the CFA feature set support, ata_id_is_cfa() tests bit 2 in word 82 of the identify data instead the word 83; it also checks the ATA/PI version support in the word 80 (which the CompactFlash specifications have as reserved), this having no slightest chance to work on the modern CF cards that don't have 0x848A in the word 0... Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-02-02libata: fix kernel-doc warningsRandy Dunlap
Fix libata kernel-doc warnings: Warning(linux-next-20090120//drivers/ata/libata-core.c:4720): Excess function parameter 'dev' description in 'ata_qc_new' Warning(linux-next-20090120//drivers/ata/libata-scsi.c:428): No description found for parameter 'ap' Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-02-02ahci: add a module parameter to ignore the SSS flags for async scanningArjan van de Ven
The SSS flag, which directs the OS to spin up one disk at a time to not have the PSU blow out, sometimes gets set even when not needed. The effect of this is a longer-than-needed boot time. This patch adds a module parameter that makes the driver ignore SSS at least as far as the parallel scan during boot is concerned... Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-02-02sata_mv: Fix chip type for Hightpoint RocketRaid 1740/1742Mark Lord
Fix chip type for the Highpoint RocketRAID 1740 and 1742 PCI cards. These really do have Marvell 6042 chips on them, rather than the 5081 chip. Confirmed by multiple (two) users (for the 1740), and by examining the product photographs from Highpoint's web site. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-02-02[libata] sata_sil: Fix compilation error with libata debugging enabledPasi Kärkkäinen
I tried compiling 2.6.29-rc1 and 2.6.29-rc3 with libata debugging enabled and got the following error: CC [M] drivers/ata/sata_sil.o drivers/ata/sata_sil.c: In function 'sil_fill_sg': drivers/ata/sata_sil.c:327: error: 'pi' undeclared (first use in this function) drivers/ata/sata_sil.c:327: error: (Each undeclared identifier is reported only once drivers/ata/sata_sil.c:327: error: for each function it appears in.) make[2]: *** [drivers/ata/sata_sil.o] Error 1 make[1]: *** [drivers/ata] Error 2 make: *** [drivers] Error 2 include/linux/libata.h has the following enabled: #define ATA_DEBUG #define ATA_VERBOSE_DEBUG #define ATA_IRQ_TRAP This fixes the compilation. Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-02-02Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: PCI hotplug: Change link order of pciehp & acpiphp PCI hotplug: fakephp: Allocate PCI resources before adding the device PCI MSI: Fix undefined shift by 32 PCI PM: Do not wait for buses in B2 or B3 during resume PCI PM: Power up devices before restoring their state PCI PM: Fix hibernation breakage on EeePC 701 PCI: irq and pci_ids patch for Intel Tigerpoint DeviceIDs PCI PM: Fix suspend error paths and testing facility breakage
2009-02-02Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6: slub: fix per cpu kmem_cache_cpu array memory leak kmalloc: return NULL instead of link failure
2009-02-02Merge branch 'merge' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: fbdev/atyfb: Fix DSP config on some PowerMacs & PowerBooks powerpc: Fix oops on some machines due to incorrect pr_debug() powerpc/ps3: Printing fixups for l64 to ll64 convserion drivers/net powerpc/5200: update device tree binding documentation powerpc/5200: Bugfix for PCI mapping of memory and IMMR powerpc/5200: update defconfigs
2009-02-02Merge branch 'sched-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: sched_rt: don't use first_cpu on cpumask created with cpumask_and sched: fix buddie group latency sched: clear buddies more aggressively sched: symmetric sync vs avg_overlap sched: fix sync wakeups cpuset: fix possible deadlock in async_rebuild_sched_domains
2009-02-02Merge branch 'for_linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6 * 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6: (45 commits) V4L/DVB (10411): s5h1409: Perform s5h1409 soft reset after tuning V4L/DVB (10403): saa7134-alsa: saa7130 doesn't support digital audio V4L/DVB (10229): ivtv: fix memory leak V4L/DVB (10385): gspca - main: Fix memory leak when USB disconnection while streaming. V4L/DVB (10325): em28xx: Fix for fail to submit URB with IRQs and Pre-emption Disabled V4L/DVB (10317): radio-mr800: fix radio->muted and radio->stereo V4L/DVB (10314): cx25840: ignore TUNER_SET_CONFIG in the command callback. V4L/DVB (10288): af9015: bug fix: stick does not work always when plugged V4L/DVB (10287): af9015: fix second FE V4L/DVB (10270): saa7146: fix unbalanced mutex_lock/unlock V4L/DVB (10265): budget.c driver: Kernel oops: "BUG: unable to handle kernel paging request at ffffffff V4L/DVB (10261): em28xx: fix kernel panic on audio shutdown V4L/DVB (10257): em28xx: Fix for KWorld 330U Board V4L/DVB (10256): em28xx: Fix for KWorld 330U AC97 V4L/DVB (10254): em28xx: Fix audio URB transfer buffer race condition V4L/DVB (10250): cx25840: fix regression: fw not loaded on first use V4L/DVB (10248): v4l-dvb: fix a bunch of compile warnings. V4L/DVB (10243): em28xx: fix compile warning V4L/DVB (10240): Fix obvious swapped names in v4l2_subdev logic V4L/DVB (10233): [PATCH] Terratec Cinergy DT XS Diversity new USB ID (0ccd:0081) ...
2009-02-02Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc: pxamci: enable DMA for write ops after CMD/RESP pxamci: replace #ifdef CONFIG_PXA27x with if (cpu_is_pxa27x()) ricoh_mmc: Use suspend_late/resume_early mmci: Add support for ST Micro derivate mmc: Add a MX2/MX3 specific SDHC driver
2009-02-02Merge git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6: icside: fix PCB version 6 support (v2) tx4939ide: typo fix and minor cleanup ide: add CS5536 host driver (v3) ide: Force VIA IDE legacy interrupts for AmigaOne boards IDE: Unregister and disable devices if initialization fails. ide: fix ide_register_port() failure handling ide: struct device - replace bus_id with dev_name(), dev_set_name() ide-cd: fix DMA for non bio-backed requests
2009-02-02Merge branch 'for-upstream' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/dvrabel/uwb * 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/dvrabel/uwb: uwb: lock rc->rsvs_lock with spin_lock_bh() wusb: timeout when waiting for ASL/PZL updates in whci-hcd uwb: remove unused #include <version.h>'s wusb: return -ENOTCONN when resetting a port with no connected device uwb: safely remove all reservations
2009-02-02Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-blockLinus Torvalds
* 'for-linus' of git://git.kernel.dk/linux-2.6-block: block: add text file detailing queue/ sysfs files bio.h: If they MUST be inlined, then use __always_inline Fix misleading comment in bio.h block: fix inconsistent parenthesisation of QUEUE_FLAG_DEFAULT block: fix oops in blk_queue_io_stat()
2009-02-02virtio-pci: do not oops on config change if driver not loadedMark McLoughlin
The host really shouldn't be notifying us of config changes before the device status is VIRTIO_CONFIG_S_DRIVER or VIRTIO_CONFIG_S_DRIVER_OK. However, if we do happen to be interrupted while we're not attached to a driver, we really shouldn't oops. Prevent this simply by checking that device->driver is non-NULL before trying to notify the driver of config changes. Problem observed by doing a "set_link virtio.0 down" with QEMU before the net driver had been loaded. Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-02-02modules: Use a better scheme for refcountingEric Dumazet
Current refcounting for modules (done if CONFIG_MODULE_UNLOAD=y) is using a lot of memory. Each 'struct module' contains an [NR_CPUS] array of full cache lines. This patch uses existing infrastructure (percpu_modalloc() & percpu_modfree()) to allocate percpu space for the refcount storage. Instead of wasting NR_CPUS*128 bytes (on i386), we now use nr_cpu_ids*sizeof(local_t) bytes. On a typical distro, where NR_CPUS=8, shiping 2000 modules, we reduce size of module files by about 2 Mbytes. (1Kb per module) Instead of having all refcounters in the same memory node - with TLB misses because of vmalloc() - this new implementation permits to have better NUMA properties, since each CPU will use storage on its preferred node, thanks to percpu storage. Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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