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git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable
* 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable:
Btrfs: always pin metadata in discard mode
Btrfs: enable discard support
Btrfs: add -o discard option
Btrfs: properly wait log writers during log sync
Btrfs: fix possible ENOSPC problems with truncate
Btrfs: fix btrfs acl #ifdef checks
Btrfs: streamline tree-log btree block writeout
Btrfs: avoid tree log commit when there are no changes
Btrfs: only write one super copy during fsync
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We have an optimization in btrfs to allow blocks to be
immediately freed if they were allocated in this transaction and never
written. Otherwise they are pinned and freed when the transaction
commits.
This isn't optimal for discard mode because immediately freeing
them means immediately discarding them. It is better to give the
block to the pinning code and letting the (slow) discard happen later.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
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The discard support code in btrfs currently is guarded by ifdefs for
BIO_RW_DISCARD, which is never defines as it's the name of an enum
memeber. Just remove the useless ifdefs to actually enable the code.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
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Enable discard by default is not a good idea given the the trim speed
of SSD prototypes we've seen, and the carecteristics for many high-end
arrays. Turn of discards by default and require the -o discard option
to enable them on.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
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A recently fsync optimization make btrfs_sync_log skip calling
wait_for_writer in the single log writer case. This is incorrect
since the writer count can also be increased by btrfs_pin_log.
Signed-off-by: Yan Zheng <zheng.yan@oracle.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
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There's a problem where we don't do any space reservation for truncates, which
can cause you to OOPs because you will be allowed to go off in the weeds a bit
since we don't account for the delalloc bytes that are created as a result of
the truncate.
Signed-off-by: Josef Bacik <jbacik@redhat.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
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The btrfs acl code was #ifdefing for a define
that didn't exist. This correctly matches it
to the values used by the Kconfig file.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
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Syncing the tree log is a 3 phase operation.
1) write and wait for all the tree log blocks for a given root.
2) write and wait for all the tree log blocks for the
tree of tree log roots.
3) write and wait for the super blocks (barriers here)
This isn't as efficient as it could be because there is
no requirement to wait for the blocks from step one to hit the disk
before we start writing the blocks from step two. This commit
changes the sequence so that we don't start waiting until
all the tree blocks from both steps one and two have been sent
to disk.
We do this by breaking up btrfs_write_wait_marked_extents into
two functions, which is trivial because it was already broken
up into two parts.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
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rpm has a habit of running fdatasync when the file hasn't
changed. We already detect if a file hasn't been changed
in the current transaction but it might have been sent to
the tree-log in this transaction and not changed since
the last call to fsync.
In this case, we want to avoid a tree log sync, which includes
a number of synchronous writes and barriers. This commit
extends the existing tracking of the last transaction to change
a file to also track the last sub-transaction.
The end result is that rpm -ivh and -Uvh are roughly twice as fast,
and on par with ext3.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
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During a tree-log commit for fsync, we've been writing at least
two copies of the super block and forcing them to disk.
The other filesystems write only one, and this change brings us on
par with them. A full transaction commit will write all the super
copies, so we still have redundant info written on a regular
basis.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
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* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6:
tty: fix vt_compat_ioctl
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Call compat_unimap_ioctl, not do_unimap_ioctl.
This was broken by commit e9216651.
The compat_unimap_ioctl was originally called do_unimap_ioctl in
fs/compat_ioctl.h which got moved to drivers/char/vt_ioctl.c.
In that patch, the caller was not updated and consequently called
the native handler.
Signed-off-by: Andreas Schwab <schwab@linux-m68k.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6:
sysfs: Allow sysfs_notify_dirent to be called from interrupt context.
sysfs: Allow sysfs_move_dir(..., NULL) again.
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sysfs_notify_dirent is a simple atomic operation that can be used to
alert user-space that new data can be read from a sysfs attribute.
Unfortunately it cannot currently be called from non-process context
because of its use of spin_lock which is sometimes taken with
interrupts enabled.
So change all lockers of sysfs_open_dirent_lock to disable interrupts,
thus making sysfs_notify_dirent safe to be called from non-process
context (as drivers/md does in md_safemode_timeout).
sysfs_get_open_dirent is (documented as being) only called from
process context, so it uses spin_lock_irq. Other places
use spin_lock_irqsave.
The usage for sysfs_notify_dirent in md_safemode_timeout was
introduced in 2.6.28, so this patch is suitable for that and more
recent kernels.
Reported-by: Joel Andres Granados <jgranado@redhat.com>
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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As device_move() and kobject_move() both handle a NULL destination,
sysfs_move_dir() should do this as well (again) and fall back to
sysfs_root in that case.
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Cc: Phil Carmody <ext-phil.2.carmody@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6:
USB: gadget: Fix EEM driver comments and VID/PID
usb-storage: Workaround devices with bogus sense size
USB: ehci: Fix IST boundary checking interval math.
USB: option: Support for AIRPLUS MCD650 Datacard
USB: whci-hcd: always do an update after processing a halted qTD
USB: whci-hcd: handle early deletion of endpoints
USB: wusb: don't use the stack to read security descriptor
USB: rename Documentation/ABI/.../sysfs-class-usb_host
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Remove expository comments and fix USB VID and PID
Signed-off-by: Brian Niebuhr <bniebuhr@efjohnson.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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usb-storage: Workaround devices with bogus sense size
Some devices, such as Huawei E169, advertise more than the standard
amount of sense data, causing us to set US_FL_SANE_SENSE, assuming
they support it. However, they subsequently fail the request sense
with that size.
This works around it generically. When a sense request fails due to
a device returning an error, US_FL_SANE_SENSE was set, and that sense
request used a larger sense size, we retry with a smaller size before
giving up.
Based on an original patch by Ben Efros <ben@pc-doctor.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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When the EHCI driver falls behind in its scheduling, the active stream's
first empty microframe may be in the past with respect to the current
microframe. The code attempts to move the starting microframe ("start") N
number of microframes forward, where N is the interval of endpoint.
However, stream->interval is a copy of the endpoint's bInterval, which is
designated in frames for FS devices, and microframes for HS devices.
Convert stream->interval to microframes before using it to move the
starting microframe forward.
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Here is a patch for Airplus MCD 650 card
Note: This device is with Victor V Kudlak, and he confirmed that this
device works with the patch.
Signed-off-by: Huzaifa Sidhpurwala <sidhpurwala.huzaifa@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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A halted qTD always triggers a hardware list update because the qset was
either removed or reactivated.
Signed-off-by: David Vrabel <david.vrabel@csr.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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If an endpoint is deleted before it's been fully added to the hardware
list, the associated qset will not be fully initialized and an oops will
occur when complete(&qset->remove_complete) is called. This can happen
if a queued URB is cancelled.
Fix this by only removing the qset from the hardware list if the
cancelled URB had qTDs.
Signed-off-by: David Vrabel <david.vrabel@csr.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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An urb's transfer buffer must be kmalloc'd memory and not point to the
stack or a DMA API warning results.
Signed-off-by: David Vrabel <david.vrabel@csr.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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The usb_host class is no more. Rename its documentation file (which
only contained WUSB specific files) to .../sysfs-class-uwb_rc-wusbhc.
Signed-off-by: David Vrabel <david.vrabel@csr.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6:
Staging: rt2860sta: prevent a panic when disabling when associated
staging: more sched.h fixes
Staging: et131x: Fix the add_10bit macro
Staging: et131x: Correct WRAP bit handling
staging: Complete sched.h removal from interrupt.h
Staging: vme: fix sched.h build breakage
Staging: poch: fix sched.h build breakage
Staging: b3dfg: fix sched.h build breakage
Staging: comedi: fix sched.h build breakage
Staging: iio: Fix missing include <linux/sched.h>
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This fixes a panic which is triggered when the hardware "disappears" from
beneath the driver, i.e. when wireless is toggled off via Fn-F2 on various
EeePC models.
Ref. bug report http://bugzilla.kernel.org/show_bug.cgi?id=13390
panic http://bugzilla.kernel.org/attachment.cgi?id=21928
Signed-off-by: Darren Salt <linux@youmustbejoking.demon.co.uk>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This patch contains more sched.h additions for drivers that built
fine under x86_64 but not i386 for some reason.
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Duh.. we need to preserve the wrap bit when adding.
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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add_10bit loses the existing wrap value
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Commit d43c36dc removed sched.h from interrupt.h and distributed sched.h
to users which needed it. This finishes it up for staging.
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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commit d43c36dc removed sched.h from interrupt.h. This broke the
vme drivers. This patch fixes them.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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commit d43c36dc removed sched.h from interrupt.h. This broke the
poch driver. This patch fixes this.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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commit d43c36dc removed sched.h from interrupt.h. This broke the
b3dfg driver. This patch fixes this.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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commit d43c36dc removed sched.h from interrupt.h. This broke some of
the comedi drivers. This patch fixes this.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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linux/sched.h include was removed form linux/poll.h by
commmit a99bbaf5ee6bad1aca0c88ea65ec6e5373e86184
Required for definition of TASK_INTERRUPTIBLE amongst others
From: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (53 commits)
vmxnet: fix 2 build problems
net: add support for STMicroelectronics Ethernet controllers.
net: ks8851_mll uses mii interfaces
net/fec_mpc52xx: Fix kernel panic on FEC error
net: Fix OF platform drivers coldplug/hotplug when compiled as modules
TI DaVinci EMAC: Clear statistics register properly.
r8169: partial support and phy init for the 8168d
irda/sa1100_ir: check return value of startup hook
udp: Fix udp_poll() and ioctl()
WAN: fix Cisco HDLC handshaking.
tcp: fix tcp_defer_accept to consider the timeout
3c574_cs: spin_lock the set_multicast_list function
net: Teach pegasus driver to ignore bluetoother adapters with clashing Vendor:Product IDs
netxen: fix pci bar mapping
ethoc: fix warning from 32bit build
libertas: fix build
net: VMware virtual Ethernet NIC driver: vmxnet3
net: Fix IXP 2000 network driver building.
libertas: fix build
mac80211: document ieee80211_rx() context requirement
...
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vmxnet3 uses in_dev* interfaces so it should depend on INET.
Also fix so that the driver builds when CONFIG_PCI_MSI is disabled.
vmxnet3_drv.c:(.text+0x2a88cb): undefined reference to `in_dev_finish_destroy'
drivers/net/vmxnet3/vmxnet3_drv.c:1335: error: 'struct vmxnet3_intr' has no member named 'msix_entries'
drivers/net/vmxnet3/vmxnet3_drv.c:1384: error: 'struct vmxnet3_intr' has no member named 'msix_entries'
drivers/net/vmxnet3/vmxnet3_drv.c:2137: error: 'struct vmxnet3_intr' has no member named 'msix_entries'
drivers/net/vmxnet3/vmxnet3_drv.c:2138: error: 'struct vmxnet3_intr' has no member named 'msix_entries'
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Bhavesh davda <bhavesh@vmware.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This is the driver for the ST MAC 10/100/1000 on-chip Ethernet
controllers (Synopsys IP blocks).
Driver documentation:
o http://stlinux.com/drupal/kernel/network/stmmac
Revisions:
o http://stlinux.com/drupal/kernel/network/stmmac-driver-revisions
Performances:
o http://stlinux.com/drupal/benchmarks/networking/stmmac
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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From: Randy Dunlap <randy.dunlap@oracle.com>
ks8851_mll uses mii interfaces so it needs to select MII.
ks8851_mll.c:(.text+0xf95ac): undefined reference to `generic_mii_ioctl'
ks8851_mll.c:(.text+0xf96a0): undefined reference to `mii_ethtool_gset'
ks8851_mll.c:(.text+0xf96fa): undefined reference to `mii_ethtool_sset'
ks8851_mll.c:(.text+0xf9754): undefined reference to `mii_link_ok'
ks8851_mll.c:(.text+0xf97ae): undefined reference to `mii_nway_restart'
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The MDIO bus cannot be accessed at interrupt context, but on an FEC
error, the fec_mpc52xx driver reset function also tries to reset the
PHY. Since the error is detected at IRQ context, and the PHY functions
try to sleep, the kernel ends up panicking.
Resetting the PHY on an FEC error isn't even necessary. This patch
solves the problem by removing the PHY reset entirely.
Signed-off-by: John Bonesio <bones@secretlab.ca>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Some OF platform drivers are missing module device tables, so they won't
load automatically on boot. This patch fixes the issue by adding proper
MODULE_DEVICE_TABLE() macros to the drivers.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The mechanism to clear the statistics register is dependent
on the status of GMIIEN bit in MAC control register. If the
GMIIEN bit is set, the stats registers are write to decrement.
If the GMIIEN bit is cleared, the stats registers are plain
read/write registers. The stats register clearing operation
must take into account the current state of GMIIEN as it
can be cleared when the interface is brought down.
With existing implementation logic, querying for interface stats
when the interface is down, can corrupt the statistics counters.
This patch examines the GMIIEN bit status in MAC_CONTROL
register before choosing an appropriate mask for clearing stats
registers.
Signed-off-by: Sriramakrishnan <srk@ti.com>
Acked-by: Chaithrika U S <chaithrika@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Extracted from Realtek's 8.012.00 r8168 driver.
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Tested-by: Simon Farnsworth <simon.farnsworth@onelan.com>
Cc: Edward Hsu <edward_hsu@realtek.com.tw>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6
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drivers/net/wireless/libertas/cmdresp.c: In function ‘lbs_process_event’:
drivers/net/wireless/libertas/cmdresp.c:519: error: ‘TASK_INTERRUPTIBLE’
undeclared (first use in this function)
drivers/net/wireless/libertas/cmdresp.c:519: error: (Each undeclared
identifier is reported only once
drivers/net/wireless/libertas/cmdresp.c:519: error: for each function it
appears in.)
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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ieee80211_rx() must be called with softirqs disabled
since the networking stack requires this for netif_rx()
and some code in mac80211 can assume that it can not
be processing its own tasklet and this call at the same
time.
It may be possible to remove this requirement after a
careful audit of mac80211 and doing any needed locking
improvements in it along with disabling softirqs around
netif_rx(). An alternative might be to push all packet
processing to process context in mac80211, instead of
to the tasklet, and add other synchronisation.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Due to the way it interacts with the networking
stack and other parts of mac80211, ieee80211_rx()
must be called with disabled softirqs.
[1] http://thread.gmane.org/gmane.linux.kernel.wireless.general/39440/focus=40266
Reported-by: Dave Young <hidave.darkstar@gmail.com>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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When a scan completes, we call ieee80211_sta_find_ibss(),
which is also called from other places. When the scan was
done in software, there's no problem as both run from the
single-threaded mac80211 workqueue and are thus serialised
against each other, but with hardware scan the completion
can be in a different context and race against callers of
this function from the workqueue (e.g. due to beacon RX).
So instead of calling ieee80211_sta_find_ibss() directly,
just arm the timer and have it fire, scheduling the work,
which will invoke ieee80211_sta_find_ibss() (if that is
appropriate in the current state).
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Need to free the dynamic allocated memory before ieee80211_free_hw();
once call ieee80211_free_hw(), should not reference to "priv" data
structure.
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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