- 09 Sep, 2008 1 commit
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Aneesh Kumar K.V authored
We run into ENOSPC error on nonmballoc ext4, even when there is free blocks on the filesystem. The patch includes two changes: a) Set reservation to NULL if we trying to allocate near group_target_block from the goal group if the free block in the group is less than windows. This should give us a better chance to allocate near group_target_block. This also ensures that if we are not allocating near group_target_block then we don't trun off reservation. This should enable us to allocate with reservation from other groups that have large free blocks count. b) we don't need to check the window size if the block reservation is off. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Mingming Cao <cmm@us.ibm.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
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- 09 Oct, 2008 2 commits
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Aneesh Kumar K.V authored
This patch converts some usage of ext4_fsblk_t to s64. This is needed so that some of the sign conversion works as expected in if loops. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Mingming Cao <cmm@us.ibm.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
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Aneesh Kumar K.V authored
The delayed allocation code allocates blocks during writepages(), which can not handle block allocation failures. To deal with this, we switch away from delayed allocation mode when we are running low on free blocks. This also allows us to avoid needing to reserve a large number of meta-data blocks in case all of the requested blocks are discontiguous. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Mingming Cao <cmm@us.ibm.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
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- 10 Oct, 2008 1 commit
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Aneesh Kumar K.V authored
This patch adds dirty block accounting using percpu_counters. Delayed allocation block reservation is now done by updating dirty block counter. In a later patch we switch to non delalloc mode if the filesystem free blocks is greater than 150% of total filesystem dirty blocks Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Mingming Cao<cmm@us.ibm.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
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- 09 Sep, 2008 1 commit
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Aneesh Kumar K.V authored
During block reservation if we don't have enough blocks left, retry block reservation with smaller block counts. This makes sure we try fallocate and DIO with smaller request size and don't fail early. The delayed allocation reservation cannot try with smaller block count. So retry block reservation to handle temporary disk full conditions. Also print free blocks details if we fail block allocation during writepages. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Mingming Cao <cmm@us.ibm.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
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- 09 Oct, 2008 1 commit
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Aneesh Kumar K.V authored
With delayed allocation we need to make sure block are reserved before we attempt to allocate them. Otherwise we get block allocation failure (ENOSPC) during writepages which cannot be handled. This would mean silent data loss (We do a printk stating data will be lost). This patch updates the DIO and fallocate code path to do block reservation before block allocation. This is needed to make sure parallel DIO and fallocate request doesn't take block out of delayed reserve space. When free blocks count go below a threshold we switch to a slow patch which looks at other CPU's accumulated percpu counter values. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
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- 20 Aug, 2008 1 commit
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Aneesh Kumar K.V authored
We are a bit agressive in invalidating all the pages. But it is ok because we really don't know why the block allocation failed and it is better to come of the writeback path so that user can look for more info. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
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- 09 Sep, 2008 3 commits
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Theodore Ts'o authored
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
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Theodore Ts'o authored
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
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Theodore Ts'o authored
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
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- 09 Oct, 2008 13 commits
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Mingming Cao authored
percpu_counter_sum_and_set() and percpu_counter_sum() is the same except the former updates the global counter after accounting. Since we are taking the fbc->lock to calculate the precise value of the counter in percpu_counter_sum() anyway, it should simply set fbc->count too, as the percpu_counter_sum_and_set() does. This patch merges these two interfaces into one. Signed-off-by: Mingming Cao <cmm@us.ibm.com> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: <linux-ext4@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
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Linus Torvalds authored
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Linus Torvalds authored
This is debatable, but while we're debating it, let's disallow the combination of splice and an O_APPEND destination. It's not entirely clear what the semantics of O_APPEND should be, and POSIX apparently expects pwrite() to ignore O_APPEND, for example. So we could make up any semantics we want, including the old ones. But Miklos convinced me that we should at least give it some thought, and that accepting writes at arbitrary offsets is wrong at least for IS_APPEND() files (which always have O_APPEND set, even if the reverse isn't true: you can obviously have O_APPEND set on a regular file). So disallow O_APPEND entirely for now. I doubt anybody cares, and this way we have one less gray area to worry about. Reported-and-argued-for-by: Miklos Szeredi <miklos@szeredi.hu> Acked-by: Jens Axboe <ens.axboe@oracle.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://jdelvare.pck.nerim.net/jdelvare-2.6Linus Torvalds authored
* 'hwmon-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6: hwmon: (abituguru3) Enable DMI probing feature on Abit AT8 32X hwmon: (abituguru3) Enable reading from AUX3 fan on Abit AT8 32X hwmon: (adt7473) Fix some bogosity in documentation file hwmon: Define sysfs interface for energy consumption register hwmon: (it87) Prevent power-off on Shuttle SN68PT eeepc-laptop: Fix hwmon interface
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git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreqLinus Torvalds authored
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq: [CPUFREQ] correct broken links and email addresses
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Matt Mackall authored
This fixes the previous fix, which was completely wrong on closer inspection. This version has been manually tested with a user-space test harness and generates sane values. A nearly identical patch has been boot-tested. The problem arose from changing how kmalloc/kfree handled alignment padding without updating ksize to match. This brings it in sync. Signed-off-by: Matt Mackall <mpm@selenic.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Németh Márton authored
Replace the no longer working links and email address in the documentation and in source code. Signed-off-by: Márton Németh <nm127@freemail.hu> Signed-off-by: Dave Jones <davej@redhat.com>
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Alistair John Strachan authored
Enable driver checking of the DMI product name (when enabled) on an Abit AT8 32X, instead of falling back to a manual probe. This eliminates false negatives and eventually will help avoid unnecessary bus probes on unsupported mainboards. Signed-off-by: Alistair John Strachan <alistair@devzero.co.uk> Tested-by: Daniel Exner <dex@dragonslave.de> Acked-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
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Alistair John Strachan authored
The table for the Abit AT8 32X was incorrectly missing an entry for the sixth ("AUX3") fan. Add this entry, exporting the fan reading to userspace. Closes lm-sensors.org ticket #2339. Signed-off-by: Alistair John Strachan <alistair@devzero.co.uk> Tested-by: Daniel Exner <dex@dragonslave.de> Acked-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
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Darrick J. Wong authored
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
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Darrick J. Wong authored
Describe the sysfs files that were introduced in the ibmaem driver. Signed-off-by: Darrick J. Wong <djwong@us.ibm.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
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Jean Delvare authored
On the Shuttle SN68PT, FAN_CTL2 is apparently not connected to a fan, but to something else. One user has reported instant system power-off when changing the PWM2 duty cycle, so we disable it. I use the board name string as the trigger in case the same board is ever used in other systems. This closes lm-sensors ticket #2349: pwmconfig causes a hard poweroff http://www.lm-sensors.org/ticket/2349Signed-off-by: Jean Delvare <khali@linux-fr.org>
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Corentin Chary authored
Creates a name file in the sysfs directory, that is needed for the libsensors library to work. Also rename fan1_pwm to pwm1 and scale its value as needed. This fixes bug #11520: http://bugzilla.kernel.org/show_bug.cgi?id=11520Signed-off-by: Corentin Chary <corentincj@iksaif.net> Signed-off-by: Jean Delvare <khali@linux-fr.org>
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- 08 Oct, 2008 3 commits
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git://ftp.linux-mips.org/pub/scm/upstream-linusLinus Torvalds authored
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: [MIPS] Sibyte: Register PIO PATA device only for Swarm and Litte Sur
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: tcp: Fix tcp_hybla zero congestion window growth with small rho and large cwnd. net: Fix netdev_run_todo dead-lock tcp: Fix possible double-ack w/ user dma net: only invoke dev->change_rx_flags when device is UP netrom: Fix sock_orphan() use in nr_release ax25: Quick fix for making sure unaccepted sockets get destroyed. Revert "ax25: Fix std timer socket destroy handling." [Bluetooth] Add reset quirk for A-Link BlueUSB21 dongle [Bluetooth] Add reset quirk for new Targus and Belkin dongles [Bluetooth] Fix double frees on error paths of btusb and bpa10x drivers
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Ralf Baechle authored
Symbol name spaghetti which is too complicated to cleanup on this stage of the release cycle breaks the build on BCM1480 platforms. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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- 07 Oct, 2008 7 commits
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Daniele Lacamera authored
Because of rounding, in certain conditions, i.e. when in congestion avoidance state rho is smaller than 1/128 of the current cwnd, TCP Hybla congestion control starves and the cwnd is kept constant forever. This patch forces an increment by one segment after #send_cwnd calls without increments(newreno behavior). Signed-off-by: Daniele Lacamera <root@danielinux.net> Signed-off-by: David S. Miller <davem@davemloft.net>
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Herbert Xu authored
Benjamin Thery tracked down a bug that explains many instances of the error unregister_netdevice: waiting for %s to become free. Usage count = %d It turns out that netdev_run_todo can dead-lock with itself if a second instance of it is run in a thread that will then free a reference to the device waited on by the first instance. The problem is really quite silly. We were trying to create parallelism where none was required. As netdev_run_todo always follows a RTNL section, and that todo tasks can only be added with the RTNL held, by definition you should only need to wait for the very ones that you've added and be done with it. There is no need for a second mutex or spinlock. This is exactly what the following patch does. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
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Ali Saidi authored
From: Ali Saidi <saidi@engin.umich.edu> When TCP receive copy offload is enabled it's possible that tcp_rcv_established() will cause two acks to be sent for a single packet. In the case that a tcp_dma_early_copy() is successful, copied_early is set to true which causes tcp_cleanup_rbuf() to be called early which can send an ack. Further along in tcp_rcv_established(), __tcp_ack_snd_check() is called and will schedule a delayed ACK. If no packets are processed before the delayed ack timer expires the packet will be acked twice. Signed-off-by: David S. Miller <davem@davemloft.net>
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Patrick McHardy authored
Jesper Dangaard Brouer <hawk@comx.dk> reported a bug when setting a VLAN device down that is in promiscous mode: When the VLAN device is set down, the promiscous count on the real device is decremented by one by vlan_dev_stop(). When removing the promiscous flag from the VLAN device afterwards, the promiscous count on the real device is decremented a second time by the vlan_change_rx_flags() callback. The root cause for this is that the ->change_rx_flags() callback is invoked while the device is down. The synchronization is meant to mirror the behaviour of the ->set_rx_mode callbacks, meaning the ->open function is responsible for doing a full sync on open, the ->close() function is responsible for doing full cleanup on ->stop() and ->change_rx_flags() is meant to do incremental changes while the device is UP. Only invoke ->change_rx_flags() while the device is UP to provide the intended behaviour. Tested-by: Jesper Dangaard Brouer <jdb@comx.dk> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
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Matt Mackall authored
SLOB's ksize calculation was braindamaged and generally harmlessly underreported the allocation size. But for very small buffers, it could in fact overreport them, leading code depending on krealloc to overrun the allocation and trample other data. Signed-off-by: Matt Mackall <mpm@selenic.com> Tested-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Linus Torvalds authored
This reverts commit 135aedc3, as requested by Hans Verkuil. It was a patch for 2.6.28 where the BKL was pushed down from v4l core to the drivers, not for 2.6.27! Requested-by: Hans Verkuil <hverkuil@xs4all.nl> Cc: Mauro Carvalho Chehab <mchehab@infradead.org> Signed-of-by: Linus Torvalds <torvalds@linux-foundation.org>
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- 06 Oct, 2008 7 commits
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Linus Torvalds authored
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Mathieu Desnoyers authored
* Theodore Ts'o (tytso@mit.edu) wrote: > > I've been playing with adding some markers into ext4 to see if they > could be useful in solving some problems along with Systemtap. It > appears, though, that as of 2.6.27-rc8, markers defined in code which is > compiled directly into the kernel (i.e., not as modules) don't show up > in Module.markers: > > kvm_trace_entryexit arch/x86/kvm/kvm-intel %u %p %u %u %u %u %u %u > kvm_trace_handler arch/x86/kvm/kvm-intel %u %p %u %u %u %u %u %u > kvm_trace_entryexit arch/x86/kvm/kvm-amd %u %p %u %u %u %u %u %u > kvm_trace_handler arch/x86/kvm/kvm-amd %u %p %u %u %u %u %u %u > > (Note the lack of any of the kernel_sched_* markers, and the markers I > added for ext4_* and jbd2_* are missing as wel.) > > Systemtap apparently depends on in-kernel trace_mark being recorded in > Module.markers, and apparently it's been claimed that it used to be > there. Is this a bug in systemtap, or in how Module.markers is getting > built? And is there a file that contains the equivalent information > for markers located in non-modules code? I think the problem comes from "markers: fix duplicate modpost entry" (commit d35cb360) Especially : - add_marker(mod, marker, fmt); + if (!mod->skip) + add_marker(mod, marker, fmt); } return; fail: Here is a fix that should take care if this problem. Thanks for the bug report! Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Tested-by: "Theodore Ts'o" <tytso@mit.edu> CC: Greg KH <greg@kroah.com> CC: David Smith <dsmith@redhat.com> CC: Roland McGrath <roland@redhat.com> CC: Sam Ravnborg <sam@ravnborg.org> CC: Wenji Huang <wenji.huang@oracle.com> CC: Takashi Nishiie <t-nishiie@np.css.fujitsu.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/linux-2.6-kgdbLinus Torvalds authored
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/linux-2.6-kgdb: kgdb: call touch_softlockup_watchdog on resume kgdb, x86: Avoid invoking kgdb_nmicallback twice per NMI
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Linus Torvalds authored
Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86: gart iommu have direct mapping when agp is present too
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git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6Linus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6: ide: workaround for bogus gcc warning in ide_sysfs_register_port() ide-cd: Optiarc DVD RW AD-7200A does play audio IDE: Fix platform device registration in Swarm IDE driver (v2) ide-dma: fix ide_build_dmatable() for TRM290 ide-cd: temporary tray close fix
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git://ftp.linux-mips.org/pub/scm/upstream-linusLinus Torvalds authored
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: [MIPS] IP27: Fix build errors if CONFIG_MAPPED_KERNEL=y [MIPS] Fix CMP Kconfig configuration and mark as broken.
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git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/v4l-dvbLinus Torvalds authored
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/v4l-dvb: (33 commits) V4L/DVB (9103): em28xx: HVR-900 B3C0 - fix audio clicking issue V4L/DVB (9099): em28xx: Add detection for K-WORLD DVB-T 310U V4L/DVB (9092): gspca: Bad init values for sonixj ov7660. V4L/DVB (9080): gspca: Add a delay after writing to the sonixj sensors. V4L/DVB (9075): gspca: Bad check of returned status in i2c_read() spca561. V4L/DVB (9053): fix buffer overflow in uvc-video V4L/DVB (9043): S5H1420: Fix size of shadow-array to avoid overflow V4L/DVB (9037): Fix support for Hauppauge Nova-S SE V4L/DVB (9029): Fix deadlock in demux code V4L/DVB (8979): sms1xxx: Add new USB product ID for Hauppauge WinTV MiniStick V4L/DVB (8978): sms1xxx: fix product name for Hauppauge WinTV MiniStick V4L/DVB (8967): Use correct XC3028L firmware for AMD ATI TV Wonder 600 V4L/DVB (8963): s2255drv field count fix V4L/DVB (8961): zr36067: Fix RGBR pixel format V4L/DVB (8960): drivers/media/video/cafe_ccic.c needs mm.h V4L/DVB (8958): zr36067: Return proper bytes-per-line value V4L/DVB (8957): zr36067: Restore the default pixel format V4L/DVB (8955): bttv: Prevent NULL pointer dereference in radio_open V4L/DVB (8935): em28xx-cards: Remove duplicate entry (EM2800_BOARD_KWORLD_USB2800) V4L/DVB (8933): gspca: Disable light frquency for zc3xx cs2102 Kokom. ...
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