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* master.kernel.org:/pub/scm/linux/kernel/git/lethal/sh-2.6: (29 commits)
sh: Fixup SH-2 BUG() trap handling.
sh: Use early_param() for earlyprintk parsing.
sh: Fix .empty_zero_page alignment for PAGE_SIZE > 4096.
sh: Fixup .data.page_aligned.
sh: Hook up SH7722 scif ipr interrupts.
sh: Fixup sh_bios() trap handling.
sh: SH-MobileR SH7722 CPU support.
sh: Fixup dma_cache_sync() callers.
sh: Convert remaining remap_area_pages() users to ioremap_page_range().
sh: Fixup kernel_execve() for syscall cleanups.
sh: Fix get_wchan().
sh: BUG() handling through trapa vector.
rtc: rtc-sh: alarm support.
rtc: rtc-sh: fix rtc for out-by-one for the month.
sh: Kill off unused SE7619 I/O ops.
serial: sh-sci: Shut up various sci_rxd_in() gcc4 warnings.
sh: Split out atomic ops logically.
sh: Fix Solution Engine 7619 build.
sh: Trivial build fixes for SH-2 support.
sh: IPR IRQ updates for SH7619/SH7206.
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fix deadlock in the 8139too driver: poll handlers should never forcibly
enable local interrupts, because they might be used by netpoll/printk
from IRQ context.
=================================
[ INFO: inconsistent lock state ]
2.6.19 #11
---------------------------------
inconsistent {softirq-on-W} -> {in-softirq-W} usage.
swapper/1 [HC0[0]:SC1[1]:HE1:SE0] takes:
(&npinfo->poll_lock){-+..}, at: [<c0350a41>] net_rx_action+0x64/0x1de
{softirq-on-W} state was registered at:
[<c0134c86>] mark_lock+0x5b/0x39c
[<c0135012>] mark_held_locks+0x4b/0x68
[<c01351e9>] trace_hardirqs_on+0x115/0x139
[<c02879e6>] rtl8139_poll+0x3d7/0x3f4
[<c035c85d>] netpoll_poll+0x82/0x32f
[<c035c775>] netpoll_send_skb+0xc9/0x12f
[<c035cdcc>] netpoll_send_udp+0x253/0x25b
[<c0288463>] write_msg+0x40/0x65
[<c011cead>] __call_console_drivers+0x45/0x51
[<c011cf16>] _call_console_drivers+0x5d/0x61
[<c011d4fb>] release_console_sem+0x11f/0x1d8
[<c011d7d7>] register_console+0x1ac/0x1b3
[<c02883f8>] init_netconsole+0x55/0x67
[<c010040c>] init+0x9a/0x24e
[<c01049cf>] kernel_thread_helper+0x7/0x10
[<ffffffff>] 0xffffffff
irq event stamp: 819992
hardirqs last enabled at (819992): [<c0350a16>] net_rx_action+0x39/0x1de
hardirqs last disabled at (819991): [<c0350b1e>] net_rx_action+0x141/0x1de
softirqs last enabled at (817552): [<c01214e4>] __do_softirq+0xa3/0xa8
softirqs last disabled at (819987): [<c0106051>] do_softirq+0x5b/0xc9
other info that might help us debug this:
no locks held by swapper/1.
stack backtrace:
[<c0104d88>] dump_trace+0x63/0x1e8
[<c0104f26>] show_trace_log_lvl+0x19/0x2e
[<c010532d>] show_trace+0x12/0x14
[<c0105343>] dump_stack+0x14/0x16
[<c0134980>] print_usage_bug+0x23c/0x246
[<c0134d33>] mark_lock+0x108/0x39c
[<c01356a7>] __lock_acquire+0x361/0x9ed
[<c0136018>] lock_acquire+0x56/0x72
[<c03aff1f>] _spin_lock+0x35/0x42
[<c0350a41>] net_rx_action+0x64/0x1de
[<c0121493>] __do_softirq+0x52/0xa8
[<c0106051>] do_softirq+0x5b/0xc9
[<c0121338>] irq_exit+0x3c/0x48
[<c0106163>] do_IRQ+0xa4/0xbd
[<c01047c6>] common_interrupt+0x2e/0x34
[<c011db92>] vprintk+0x2c0/0x309
[<c011dbf6>] printk+0x1b/0x1d
[<c01003f2>] init+0x80/0x24e
[<c01049cf>] kernel_thread_helper+0x7/0x10
=======================
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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master.kernel.org:/pub/scm/linux/kernel/git/mchehab/v4l-dvb
* 'master' of master.kernel.org:/pub/scm/linux/kernel/git/mchehab/v4l-dvb:
V4L/DVB (4954): Fix: On ia64, i2c adap->inb/adap->outb are wrongly evaluated
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i2c defines two callbacks (inb/outb). On ia64, since it defines also two macros
with those names, it causes the following errors:
drivers/media/video/usbvision/usbvision-i2c.c:64:39: macro "outb" passed 4 arguments, but takes just 2
drivers/media/video/usbvision/usbvision-i2c.c: In function `try_write_address':
drivers/media/video/usbvision/usbvision-i2c.c:64: warning: assignment makes integer from pointer without a cast
drivers/media/video/usbvision/usbvision-i2c.c:89:38: macro "inb" passed 4 arguments, but takes just 1
drivers/media/video/usbvision/usbvision-i2c.c: In function `try_read_address':
drivers/media/video/usbvision/usbvision-i2c.c:89: warning: assignment makes integer from pointer without a cast
drivers/media/video/usbvision/usbvision-i2c.c:85: warning: unused variable `buf'
drivers/media/video/usbvision/usbvision-i2c.c:173:53: macro "inb" passed 4 arguments, but takes just 1
drivers/media/video/usbvision/usbvision-i2c.c: In function `usb_xfer':
drivers/media/video/usbvision/usbvision-i2c.c:173: warning: assignment makes integer from pointer without a cast
drivers/media/video/usbvision/usbvision-i2c.c:179:54: macro "outb" passed 4 arguments, but takes just 2
drivers/media/video/usbvision/usbvision-i2c.c:179: warning: assignment makes integer from pointer without a cast
thanks to Andrew Morton for pointing this.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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While working on bidi support at struct request level
I have found that blk_queue_activity_fn is actually never used.
The only user is in ide-probe.c with this code:
/* enable led activity for disk drives only */
if (drive->media == ide_disk && hwif->led_act)
blk_queue_activity_fn(q, hwif->led_act, drive);
And led_act is never initialized anywhere.
(Looking back at older kernels it was used in the PPC arch, but was removed around 2.6.18)
Unless it is all for future use off course.
(this patch is against linux-2.6-block.git as off 2006/12/4)
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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* master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: (32 commits)
[NETPOLL]: Fix local_bh_enable() warning.
[IPVS]: Make ip_vs_sync.c <= 80col wide.
[IPVS]: Use msleep_interruptable() instead of ssleep() aka msleep()
[HAMRADIO]: Fix baycom_epp.c compile failure.
[DCCP]: Whitespace cleanups
[DCCP] ccid3: Fixup some type conversions related to rtts
[DCCP] ccid3: BUG-FIX - conversion errors
[DCCP] ccid3: Reorder packet history source file
[DCCP] ccid3: Reorder packet history header file
[DCCP] ccid3: Make debug output consistent
[DCCP] ccid3: Perform history operations only after packet has been sent
[DCCP] ccid3: TX history - remove unused field
[DCCP] ccid3: Shift window counter computation
[DCCP] ccid3: Sanity-check RTT samples
[DCCP] ccid3: Initialise RTT values
[DCCP] ccid: Deprecate ccid_hc_tx_insert_options
[DCCP]: Warn when discarding packet due to internal errors
[DCCP]: Only deliver to the CCID rx side in charge
[DCCP]: Simplify TFRC calculation
[DCCP]: Debug timeval operations
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* git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (36 commits)
[POWERPC] Generic BUG for powerpc
[PPC] Fix compile failure do to introduction of PHY_POLL
[POWERPC] Only export __mtdcr/__mfdcr if CONFIG_PPC_DCR is set
[POWERPC] Remove old dcr.S
[POWERPC] Fix SPU coredump code for max_fdset removal
[POWERPC] Fix irq routing on some 32-bit PowerMacs
[POWERPC] ps3: Add vuart support
[POWERPC] Support ibm,dynamic-reconfiguration-memory nodes
[POWERPC] dont allow pSeries_probe to succeed without initialising MMU
[POWERPC] micro optimise pSeries_probe
[POWERPC] Add SPURR SPR to sysfs
[POWERPC] Add DSCR SPR to sysfs
[POWERPC] Fix 440SPe CPU table entry
[POWERPC] Add support for FP emulation for the e300c2 core
[POWERPC] of_device_register: propagate device_create_file return code
[POWERPC] Fix mmap of PCI resource with hack for X
[POWERPC] iSeries: head_64.o needs to depend on lparmap.s
[POWERPC] cbe_thermal: Fix initialization of sysfs attribute_group
[POWERPC] Remove QE header files from lite5200.c
[POWERPC] of_platform_make_bus_id(): make `magic' int
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This adds CPU support for the SH7722.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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This adds alarm support for the RTC_ALM_SET, RTC_ALM_READ,
RTC_WKALM_SET and RTC_WKALM_RD operations to rtc-sh.
The only unusual part is the handling of the alarm interrupt. If you
clear the alarm flag (AF) while the time in the RTC still matches the
time in the alarm registers than AF is immediately re-set, and if the
alarm interrupt (AIE) is still enabled then it re-triggers. I was
originally getting around 20k+ interrupts generated during the second
when the RTC and alarm registers matches.
The solution I've used is to clear AIE when the alarm goes off and
then use the carry interrupt to re-enabled it. The carry interrupt
will check AF and re-enabled AIE if it's clear. If AF is not clear
it'll clear it and then the check will be repeated next carry
interrupt. This a bit in rtc structure that indicates that it's
waiting to have AIE re-enabled so it doesn't turn it on when it
wasn't enabled anyway.
Signed-off-by: Jamie Lenehan <lenehan@twibble.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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The RMONCNT register, which holds the month in the RTC, takes a value
between 1 and 12 while the tm_mon field in the time structures takes
a value between 0 and 11. This wasn't being taken into account in
rtc-sh resulting in the month being out by one.
eg, on my board during boot the RTC is set to:
RTC is set to Thu Jul 01 09:00:00 1999
but "hwclock -r" immediately after logging in was showing:
Sun Aug 1 09:01:43 1999 0.000000 seconds
Signed-off-by: Jamie Lenehan <lenehan@twibble.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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When testing the per second interrupt support (RTC_UIE_ON/RTC_UIE_OFF)
of the new RTC system it would die in sh_rtc_interrupt due to a null
ptr dereference. The following gets it working correctly.
Signed-off-by: Jamie Lenehan <lenehan@twibble.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Fix foobar in 15b1c0e822f578306332d4f4c449250db5c5dceb and
e8cc49bb0fdb9e18a99e6780073d1400ba2b0d1f patch series.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Currently WAN router drivers can be built in-kernel while the
register/unregister_wan_device interfaces are built as modules.
This causes:
drivers/built-in.o: In function `cycx_init':
cycx_main.c:(.init.text+0x5c4b): undefined reference to `register_wan_device'
drivers/built-in.o: In function `cycx_exit':
cycx_main.c:(.exit.text+0x560): undefined reference to `unregister_wan_device'
make: *** [.tmp_vmlinux1] Error 1
The problem is caused by tristate -> bool conversion (y or m => y),
so convert WAN_ROUTER_DRIVERS to a tristate so that the correct
dependency is preserved.
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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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:
AT91 MMC update for 2.6.19
mmc: Change SDHCI iomem error to a warning
mmc: fix "prev->state: 2 != TASK_RUNNING??" problem on SD/MMC card removal
AT91 MMC 5 : Minor cleanups
AT91 MMC 4 : Interrupt handler cleanup
AT91 MMC 3 : Move global mci_clk variable
AT91 MMC 2 : Use platform resources
AT91 MMC 1: Pass host structure.
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This looks like a result of too many auto-merges. The
CONFIG_ARCH_VERSATILE case was handled a total of 6 times.
This kills 5 of them.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
--
drivers/net/smc91x.h | 90 ---------------------------------------------------
1 file changed, 90 deletions(-)
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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Update driver version to 1.1.0.
Signed-off-by: Brice Goglin <brice@myri.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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Fix sizing of big_bytes in the case of vlan frames. The 4
VLAN_HLEN bytes were omitted, leading to sizing the big buffer
4 bytes smaller than it should be. Due to how rx buffers are
carved from pages, this was harmless for the common (9000, 1500)
byte MTUs, but could lead to data corruption for some MTUs.
Signed-off-by: Brice Goglin <brice@myri.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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Receive full vlan frames into smalls when running with a jumbo MTU.
Signed-off-by: Brice Goglin <brice@myri.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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Drop the old routines that used the physically contigous skb now
that we use the physical pages. And rename myri10ge_page_rx_done()
to myri10ge_rx_done() as it was previously.
Signed-off-by: Brice Goglin <brice@myri.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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Switch to physical page skb, by calling the new page-based
allocation routines and using myri10ge_page_rx_done().
Signed-off-by: Brice Goglin <brice@myri.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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Add physical page skb allocation routines and page based rx_done,
to be used by upcoming patches.
Signed-off-by: Brice Goglin <brice@myri.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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Indentation cleanups to synchronize to our tree which is automatically
indent'ed.
Signed-off-by: Brice Goglin <brice@myri.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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This driver tries to enable/disable NAPI at runtime, but
does so in an unsafe manner, and the NAPI interrupt handling is
a mess. Replace it with a compile time selected NAPI implementation.
Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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Since macb is a chip-internal device, use __raw_readl and
__raw_writel instead of readl/writel. This will perform native-endian
accesses, which is the right thing to do on both AVR32 and ARM devices.
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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The macb driver calls schedule_delayed_work() and friends, so we need
to use a struct delayed_work along with it. The conversion was
explained by David Howells on lkml Dec 5 2006:
http://lkml.org/lkml/2006/12/5/269
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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Fix compilation failures when building the ucc_geth driver with spinlock
debugging.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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The driver is usable on the newer SAM9 processors so replace all text
references to AT91RM9200 with just AT91.
The controller bug where all the words are byte-swapped is fixed on the
AT91SAM9 processors. The byte-swapping work-around therefore only needs
to be done if cpu_is_at91rm9200().
[Original patch from Wojtek Kaniewski]
The AT91RM9200 and AT91SAM9260 processors support two MMC/SD slots - the
slot which is connected is now passed via the platform_data and the
correct slot selected in the AT91_MCI_SDCR register.
The driver should not be calling at91_set_gpio_output() since the VCC
pin should have already been configured as an output in the
processor/board setup code. The driver should call
at91_set_gpio_value().
Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
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Some controllers report an invalid iomem size, but seem to work
correctly anyway. Change our current error to just a warning and
hope it doesn't cause too much problems.
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
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Currently on SD/MMC card removal the system exhibits the following message (the platform is ARM Versatile):
prev->state: 2 != TASK_RUNNING??
mmcqd/762[CPU#0]: BUG in __schedule at linux-2.6/kernel/sched.c:3826
(akpm: someone tried to fix this, but it's still wrong)
Signed-off-by: Vitaly Wool <vitalywool@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
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A number of small cleanups to the AT91RM9200 MMC driver:
- fix warnings generated by pr_debug().
- prepend "AT91 MMC:" to printk() messages.
Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
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This patch simplifies the AT91RM9200 MMC interrupt handler code so that
it doesn't re-read the Interrupt Status and Interrupt Mask registers
multiple times.
Also defined AT91_MCI_ERRORS instead of using the hard-coded 0xffff0000.
Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
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Move the global 'mci_clk' variable into the local 'at91mci_host'
structure.
Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
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Use the I/O base-address and IRQ passed to the driver via the
platform_device resources instead of using hardcoded values.
Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
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The I/O base address is now stored in the 'at91mci_host' structure. We
therefore have to pass this structure to at91_mci_read() and
at91_mci_write().
Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
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Adds support for the PS3 virtual UART (vuart). The vuart provides a
bi-directional byte stream data link between logical partitions.
This is needed for the ps3 graphics driver and the ps3 power
control support to be able to communicate with the lv1 policy
module.
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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As CBC is the default chaining method for cryptoloop, we should select
it from cryptoloop to ease the transition. Spotted by Rene Herman.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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master.kernel.org:/pub/scm/linux/kernel/git/mchehab/v4l-dvb
* 'master' of master.kernel.org:/pub/scm/linux/kernel/git/mchehab/v4l-dvb: (132 commits)
V4L/DVB 4949b: Fix container_of pointer retreival
V4L/DVB (4949a): Fix INIT_WORK
V4L/DVB (4949): Cxusb: codingstyle cleanups
V4L/DVB (4948): Cxusb: Convert tuner functions to use dvb_pll_attach
V4L/DVB (4947): Cx88: trivial cleanups
V4L/DVB (4946): Cx88: Move cx88_dvb_bus_ctrl out of the card-specific area
V4L/DVB (4945): Cx88: consolidate cx22702_config structs
V4L/DVB (4944): Cx88: Convert DViCO FusionHDTV Hybrid to use dvb_pll_attach
V4L/DVB (4943): Cx88: cleanup dvb_pll_attach for lgdt3302 tuners
V4L/DVB (4953): Usbvision minor fixes
V4L/DVB (4951): Add version.h, since it is required for VIDIOC_QUERYCAP
V4L/DVB (4940): Or51211: Changed SNR and signal strength calculations
V4L/DVB (4939): Or51132: Changed SNR and signal strength reporting
V4L/DVB (4938): Cx88: Convert lgdt3302 tuning function to use dvb_pll_attach
V4L/DVB (4941): Remove LINUX_VERSION_CODE and fix identations
V4L/DVB (4942): Whitespace cleanups
V4L/DVB (4937): Usbvision cleanup and code reorganization
V4L/DVB (4936): Make MT4049FM5 tuner to set FM Gain to Normal
V4L/DVB (4935): Added the capability of selecting fm gain by tuner
V4L/DVB (4934): Usbvision radio requires GainNormal at e register
...
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web site: http://kvm.sourceforge.net
mailing list: kvm-devel@lists.sourceforge.net
(http://lists.sourceforge.net/lists/listinfo/kvm-devel)
The following patchset adds a driver for Intel's hardware virtualization
extensions to the x86 architecture. The driver adds a character device
(/dev/kvm) that exposes the virtualization capabilities to userspace. Using
this driver, a process can run a virtual machine (a "guest") in a fully
virtualized PC containing its own virtual hard disks, network adapters, and
display.
Using this driver, one can start multiple virtual machines on a host.
Each virtual machine is a process on the host; a virtual cpu is a thread in
that process. kill(1), nice(1), top(1) work as expected. In effect, the
driver adds a third execution mode to the existing two: we now have kernel
mode, user mode, and guest mode. Guest mode has its own address space mapping
guest physical memory (which is accessible to user mode by mmap()ing
/dev/kvm). Guest mode has no access to any I/O devices; any such access is
intercepted and directed to user mode for emulation.
The driver supports i386 and x86_64 hosts and guests. All combinations are
allowed except x86_64 guest on i386 host. For i386 guests and hosts, both pae
and non-pae paging modes are supported.
SMP hosts and UP guests are supported. At the moment only Intel
hardware is supported, but AMD virtualization support is being worked on.
Performance currently is non-stellar due to the naive implementation of the
mmu virtualization, which throws away most of the shadow page table entries
every context switch. We plan to address this in two ways:
- cache shadow page tables across tlb flushes
- wait until AMD and Intel release processors with nested page tables
Currently a virtual desktop is responsive but consumes a lot of CPU. Under
Windows I tried playing pinball and watching a few flash movies; with a recent
CPU one can hardly feel the virtualization. Linux/X is slower, probably due
to X being in a separate process.
In addition to the driver, you need a slightly modified qemu to provide I/O
device emulation and the BIOS.
Caveats (akpm: might no longer be true):
- The Windows install currently bluescreens due to a problem with the
virtual APIC. We are working on a fix. A temporary workaround is to
use an existing image or install through qemu
- Windows 64-bit does not work. That's also true for qemu, so it's
probably a problem with the device model.
[bero@arklinux.org: build fix]
[simon.kagstrom@bth.se: build fix, other fixes]
[uril@qumranet.com: KVM: Expose interrupt bitmap]
[akpm@osdl.org: i386 build fix]
[mingo@elte.hu: i386 fixes]
[rdreier@cisco.com: add log levels to all printks]
[randy.dunlap@oracle.com: Fix sparse NULL and C99 struct init warnings]
[anthony@codemonkey.ws: KVM: AMD SVM: 32-bit host support]
Signed-off-by: Yaniv Kamay <yaniv@qumranet.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
Cc: Simon Kagstrom <simon.kagstrom@bth.se>
Cc: Bernhard Rosenkraenzer <bero@arklinux.org>
Signed-off-by: Uri Lublin <uril@qumranet.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Roland Dreier <rolandd@cisco.com>
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Anthony Liguori <anthony@codemonkey.ws>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Mostly changing alignment. Just some general cleanup.
[akpm@osdl.org: build fix]
Signed-off-by: Daniel Walker <dwalker@mvista.com>
Acked-by: John Stultz <johnstul@us.ibm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Fix few bugs that meant that:
- superblocks weren't alway written at exactly the right time (this
could show up if the array was not written to - writting to the array
causes lots of superblock updates and so hides these errors).
- restarting device recovery after a clean shutdown (version-1 metadata
only) didn't work as intended (or at all).
1/ Ensure superblock is updated when a new device is added.
2/ Remove an inappropriate test on MD_RECOVERY_SYNC in md_do_sync.
The body of this if takes one of two branches depending on whether
MD_RECOVERY_SYNC is set, so testing it in the clause of the if
is wrong.
3/ Flag superblock for updating after a resync/recovery finishes.
4/ If we find the neeed to restart a recovery in the middle (version-1
metadata only) make sure a full recovery (not just as guided by
bitmaps) does get done.
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Currently raid5 depends on clearing the BIO_UPTODATE flag to signal an error
to higher levels. While this should be sufficient, it is safer to explicitly
set the error code as well - less room for confusion.
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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There are some vestiges of old code that was used for bypassing the stripe
cache on reads in raid5.c. This was never updated after the change from
buffer_heads to bios, but was left as a reminder.
That functionality has nowe been implemented in a completely different way, so
the old code can go.
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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The autorun code is only used if this module is built into the static
kernel image. Adjust #ifdefs accordingly.
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Acked-by: NeilBrown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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stripe_to_pdidx finds the index of the parity disk for a given stripe. It
assumes raid5 in that it uses "disks-1" to determine the number of data disks.
This is incorrect for raid6 but fortunately the two usages cancel each other
out. The only way that 'data_disks' affects the calculation of pd_idx in
raid5_compute_sector is when it is divided into the sector number. But as
that sector number is calculated by multiplying in the wrong value of
'data_disks' the division produces the right value.
So it is innocuous but needs to be fixed.
Also change the calculation of raid_disks in compute_blocknr to make it
more obviously correct (it seems at first to always use disks-1 too).
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Call the chunk_aligned_read where appropriate.
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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If a bypass-the-cache read fails, we simply try again through the cache. If
it fails again it will trigger normal recovery precedures.
update 1:
From: NeilBrown <neilb@suse.de>
1/
chunk_aligned_read and retry_aligned_read assume that
data_disks == raid_disks - 1
which is not true for raid6.
So when an aligned read request bypasses the cache, we can get the wrong data.
2/ The cloned bio is being used-after-free in raid5_align_endio
(to test BIO_UPTODATE).
3/ We forgot to add rdev->data_offset when submitting
a bio for aligned-read
4/ clone_bio calls blk_recount_segments and then we change bi_bdev,
so we need to invalidate the segment counts.
5/ We don't de-reference the rdev when the read completes.
This means we need to record the rdev to so it is still
available in the end_io routine. Fortunately
bi_next in the original bio is unused at this point so
we can stuff it in there.
6/ We leak a cloned bio if the target rdev is not usable.
From: NeilBrown <neilb@suse.de>
update 2:
1/ When aligned requests fail (read error) they need to be retried
via the normal method (stripe cache). As we cannot be sure that
we can process a single read in one go (we may not be able to
allocate all the stripes needed) we store a bio-being-retried
and a list of bioes-that-still-need-to-be-retried.
When find a bio that needs to be retried, we should add it to
the list, not to single-bio...
2/ We were never incrementing 'scnt' when resubmitting failed
aligned requests.
[akpm@osdl.org: build fix]
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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