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2010-05-18drivers/block/drbd: Use kzallocJulia Lawall1-2/+1
Use kzalloc rather than the combination of kmalloc and memset. The semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression x,size,flags; statement S; @@ -x = kmalloc(size,flags); +x = kzalloc(size,flags); if (x == NULL) S -memset(x, 0, size); // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: Create new current UUID as late as possiblePhilipp Reisner3-6/+39
The choice was to either delay creation of the new UUID until IO got thawed or to delay it until the first IO request. Both are correct, the later is more friendly to users of dual-primary setups, that actually only write on one side. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: If we detect late that IO got frozen, retry after we thawed.Philipp Reisner2-9/+28
If we detect late (= after grabing mdev->req_lock) that IO got frozen, we return 1 to generic_make_request(), which simply will retry to make a request for that bio. In the subsequent call of generic_make_request() into drbd_make_request_26() we sleep in inc_ap_bio(). Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: always use_bmbv, ignore settingLars Ellenberg3-5/+6
Now that the peer may handle multi-bio EEs, we can ignore the peer's limit, and concentrate on the limits of the local IO stack. This is safe accross drbd protocol versions, as our queue_max_sectors() will be adjusted accordingly. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: allow resync requests to be larger than max_segment_sizeLars Ellenberg1-7/+6
this should allow for better background resync performance. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: Allow drbd_epoch_entries to use multiple bios.Lars Ellenberg6-324/+480
This should allow for better performance if the lower level IO stack of the peers differs in limits exposed either via the queue, or via some merge_bvec_fn. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: reduce sizeof struct drbd_epoch_entry by 8 byte by aligning membersLars Ellenberg1-5/+1
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: Fixes to the new delay_probes codePhilipp Reisner3-9/+8
* Only send delay_probes with protocol 93 or newer * drbd_send_delay_probes() is called only from worker context, no atomic_t needed for delay_seq Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: A fixes to the new resync speed codePhilipp Reisner2-4/+6
* Mention P_DELAY_PROBE in the packet naming array * Do not corrupt the mdev->data.work list in case the timer goes off before delay_probe_work got handled by the worker * Do not mod_timer() twice for a single delay_probe pair Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: Proc bits of new resync speed stuffPhilipp Reisner1-2/+18
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: Control the actual resync rate based on the queuing delay of data packetsPhilipp Reisner1-1/+14
In a setup with a high bandwidth and high latency network, eventually involving deep queues in routers, it is beneficial to only fill those queues up to an limited extend with resync data. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: Actually send delay probesPhilipp Reisner2-2/+47
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: Four new configuration settings for resync speed controlPhilipp Reisner1-0/+4
To reasonably control resync speed over drbd-proxy connections, drbd has to measure the current delay of packets transmitted over the (possibly congested) data socket vs the meta-data socket. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: Sending of delay_probesPhilipp Reisner2-0/+34
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: Receiving of delay_probesPhilipp Reisner3-1/+118
Delay_probes are new packets in the DRBD protocol, which allow DRBD to know the current delay packets have on the data socket. (relative to the meta data socket) Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: Fixed bitmap in case of online-grow without resyncPhilipp Reisner1-4/+1
The "surplus" bits of the old (smaller) bitmap must be clean in case of online-grow without resync. Note: Reverted 67ae8b80d4a116ab3b7094eb3723506b20c06dff as well, since the lines added by this patch are redundant. The bits get set by the bm_set_surplus(b) call before that. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: Added transmission faults to the fault injection codePhilipp Reisner3-2/+10
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: bugfix: Make resize work, if remote's size was limiting and increased ↵Philipp Reisner1-5/+2
in the meantime Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: Implemented the --assume-clean option for drbdsetup resizePhilipp Reisner1-2/+9
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: Added some missing staticsPhilipp Reisner1-4/+4
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: Make sure to resync all of the new storage upon online resizePhilipp Reisner1-0/+6
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: Implemented flags for the resize packetPhilipp Reisner4-18/+25
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: Implemented the set_new_bits parameter for drbd_bm_resize()Philipp Reisner4-6/+10
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: made determin_dev_size's parameter an flag enumPhilipp Reisner2-4/+8
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: New handler: initial-split-brainAdam Gandelman1-1/+4
Some wish to be notified of all instances of split brain, not just those that go unresolved. The initial-split-brain handler is called to notify someone upon detection of all split brain conditions even if auto-recovery policies are configured. Signed-off-by: Adam Gandelman <adam.gandelman@linbit.com> Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: fail_requests_early: remove incorrect and unnecessary optimizationLars Ellenberg1-5/+0
The condition does not fit the commend (I may well be Primary, even if I lost the disk earlier and now the connection). And this is catched below anyways, where it also gets logged. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: check for corrupt or malicous sector addresses when receiving dataLars Ellenberg1-0/+10
Even if it should never happen if the peer does behave, we need to double check, and not even attempt access beyond end of device. It usually would be caught by lower layers, resulting in "IO error", but may also end up in the internal meta data area. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: cleanup: This code path to trigger a resync is no longer neededPhilipp Reisner1-17/+0
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: don't start a resync without access to up-to-date DataLars Ellenberg2-1/+4
In case both nodes are "inconsistent", invalidate would have started a resync anyways, without a chance to ever succeed, just filling the logs with warning messages. Simply disallow that state change, re-using the SS_NO_UP_TO_DATE_DISK return value. This also changes the corresponding error string to "Need access to UpToDate Data" -- I found the "Refusing to be Primary without at least one UpToDate disk" answer misleading in some situations anyways. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: fix potential protocol errorLars Ellenberg1-1/+4
Don't forget to drain the digest in case we cannot satisfy a checksum based resync or online-verify request. It would additionally cause a protocoll error, dropping the connection. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: remove bogus ASSERTLars Ellenberg1-1/+0
block_id may be ID_SYNCER, as well as checksum based resync request magic, or online verify magic. Let's just drop that ASSERT. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: fix regression: attach while connected failedLars Ellenberg1-1/+6
commit e4f925e12ea5daaa9baf2dd5af9c4951721dae95 Author: Philipp Reisner <philipp.reisner@linbit.com> Date: Wed Mar 17 14:18:41 2010 +0100 drbd: Do not upgrade state to Outdated if already Inconsistent prevented the necessary state transition for attaching while connected (Diskless -> Consistent respectively Outdated). This is the fix for the fix. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: Do not upgrade state to Outdated if already Inconsistent [Bugz 277]Philipp Reisner1-1/+1
There was a race condition: In a situation with a SyncSource+Primary and a SyncTarget+Secondary node, and a resync dependency to some other device. After both nodes decided to do the resync, the other device finishes its resync process. At that time SyncSource already sent the P_SYNC_UUID packet, and already updated its peer disk state to Inconsistent. The SyncTarget node waits for the P_SYNC_UUID and sends a state packet to report the resync dependency change. That packet still carries a disk state of Outdated. Impact: If application writes come in, during that time on the Primary node, those do not get replicated, and the out-of-sync counter gets increased. => The completion of resync is not detected on the primary node. => stalled. Those blocks get resync'ed with the next resync, since the are get marked as out-of-sync in the bitmap. In order to fix this, we filter out that wrong state change in the sanitize_state() function. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: use proc_create_data with explicit NULL argumentLars Ellenberg1-1/+1
To document that we know about deprecation of proc_create, even though we are not affected, as we don't use the ->data member, open code proc_create_data(..., NULL); Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-11paride: fix menu indentationRandy Dunlap1-11/+11
Make the PARIDE menu be displayed correctly, with proper/expected indentation, by moving the GDROM kconfig symbol, which was splitting the PARIDE kconfig symbol from its dependent symbols. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2010-04-29Merge branch 'master' into for-2.6.35Jens Axboe216-1729/+5305
Conflicts: fs/block_dev.c Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2010-04-29Merge branch 'for-linus' of ↵Linus Torvalds1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/lrg/voltage-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lrg/voltage-2.6: regulator: fix enabling regulator issue on max8925
2010-04-29Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds23-136/+1230
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (27 commits) sfc: Change falcon_probe_board() to fail for unsupported boards sfc: Always close net device at the end of a disabling reset sfc: Wait at most 10ms for the MC to finish reading out MAC statistics sctp: Fix oops when sending queued ASCONF chunks sctp: fix to calc the INIT/INIT-ACK chunk length correctly is set sctp: per_cpu variables should be in bh_disabled section sctp: fix potential reference of a freed pointer sctp: avoid irq lock inversion while call sk->sk_data_ready() Revert "tcp: bind() fix when many ports are bound" net/usb: add sierra_net.c driver cdc_ether: fix autosuspend for mbm devices bluetooth: handle l2cap_create_connless_pdu() errors gianfar: Wait for both RX and TX to stop ipheth: potential null dereferences on error path smc91c92_cs: spin_unlock_irqrestore before calling smc_interrupt() drivers/usb/net/kaweth.c: add device "Allied Telesyn AT-USB10 USB Ethernet Adapter" bnx2: Update version to 2.0.9. bnx2: Prevent "scheduling while atomic" warning with cnic, bonding and vlan. bnx2: Fix lost MSI-X problem on 5709 NICs. cxgb3: Wait longer for control packets on initialization ...
2010-04-28sfc: Change falcon_probe_board() to fail for unsupported boardsBen Hutchings3-12/+7
The driver needs specific PHY and board support code for each SFC4000 board; there is no point trying to continue if it is missing. Currently unsupported boards can trigger an 'oops'. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Cc: stable@kernel.org Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-28sfc: Always close net device at the end of a disabling resetBen Hutchings1-2/+2
This fixes a regression introduced by commit eb9f6744cbfa97674c13263802259b5aa0034594 "sfc: Implement ethtool reset operation". Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Cc: stable@kernel.org Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-28sfc: Wait at most 10ms for the MC to finish reading out MAC statisticsBen Hutchings1-2/+11
The original code would wait indefinitely if MAC stats DMA failed. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Cc: stable@kernel.org Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-28blkdev: generalize flags for blkdev_issue_fn functionsDmitry Monakhov2-2/+4
The patch just convert all blkdev_issue_xxx function to common set of flags. Wait/allocation semantics preserved. Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2010-04-28Merge branch 'urgent' of ↵Linus Torvalds1-36/+18
git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6 * 'urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6: pcmcia: fix matching rules for pseudo-multi-function cards pcmcia: pcmcia_dev_present bugfix
2010-04-28Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-blockLinus Torvalds7-67/+80
* 'for-linus' of git://git.kernel.dk/linux-2.6-block: coda: move backing-dev.h kernel include inside __KERNEL__ mtd: ensure that bdi entries are properly initialized and registered Move mtd_bdi_*mappable to mtdcore.c btrfs: convert to using bdi_setup_and_register() Catch filesystems lacking s_bdi drbd: Terminate a connection early if sending the protocol fails drbd: fix memory leak Fix JFFS2 sync silent failure smbfs: add bdi backing to mount session ncpfs: add bdi backing to mount session exofs: add bdi backing to mount session ecryptfs: add bdi backing to mount session coda: add bdi backing to mount session cifs: add bdi backing to mount session afs: add bdi backing to mount session. 9p: add bdi backing to mount session bdi: add helper function for doing init and register of a bdi for a file system block: ensure jiffies wrap is handled correctly in blk_rq_timed_out_timer
2010-04-28Merge git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdogLinus Torvalds3-10/+10
* git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog: watchdog: booke_wdt: fix build - unconstify watchdog_info watchdog: sbc_fitpc2_wdt: fixed "scheduling while atomic" bug. watchdog: sbc_fitpc2_wdt: fixed I/O operations order Watchdog: sb_wdog.c: Fix sibyte watchdog initialization
2010-04-28regulator: fix enabling regulator issue on max8925Haojian Zhuang1-1/+1
Fix regulator enabling issue that is caused by typo error in is_enabled(). Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-04-28net/usb: add sierra_net.c driverElina Pasheva3-0/+1012
Re-submitted based on comments from netdev community. Summary of the changes: 1. Improved error handling. 2. Added the missing timeout arguments to usb_control_msg(). The following is a new Linux driver which exposes certain models of Sierra Wireless modems to the operating system as Network Interface Cards (NICs). This driver requires a version of the sierra.c driver which supports blacklisting to work properly. The blacklist in sierra.c rejects the interfaces claimed by sierra_net.c. Likewise, the sierra_net.c driver only accepts (i.e. whitelists) the interface(s) used for USB-to-WWAN traffic. The version of sierra.c which supports blacklisting is available from the sierra wireless knowledge base page for older kernels. It is also available in Linux kernel starting from version 2.6.31. This driver works with all Sierra Wireless devices configured with PID=68A3 like USB305, USB306 provided the corresponding firmware version is I2.0 (for USB305) or M3.0 (for USB306) and later. This driver will not work with earlier firmware versions than the ones shown above. In this case the driver will issue an error message indicating incompatibility and will not serve the device's USB-to-WWAN interface. Sierra_net.c sits atop a pre-existing Linux driver called usbnet.c. A series of hook functions are provided in sierra_net.c which are called by usbnet.c in response to a particular condition such as receipt or transmission of a data packet. As such, usbnet.c does most of the work of making a modem appear to the system as a network device and for properly exchanging traffic between the USB subsystem and the Network card interface. Sierra_net.c is concerned with managing the data exchanged between the USB-to-WWAN interface and the upper layers of the operating system. Signed-off-by: Elina Pasheva <epasheva@sierrawireless.com> Signed-off-by: Rory Filer <rfiler@sierrawireless.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-28cdc_ether: fix autosuspend for mbm devicesTorgny Johansson1-0/+1
Autosuspend works until you bring the wwan interface up, then the device does not enter autosuspend anymore. The following patch fixes the problem by setting the .manage_power field in the mbm_info struct to the same as in the cdc_info struct (cdc_manager_power). Signed-off-by: Torgny Johansson <torgny.johansson@ericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-28gianfar: Wait for both RX and TX to stopAndy Fleming1-3/+3
When gracefully stopping the controller, the driver was continuing if *either* RX or TX had stopped. We need to wait for both, or the controller could get into an invalid state. Signed-off-by: Andy Fleming <afleming@freescale.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-28gpio: fix pca953x set_type 'scheduling while atomic' bugMarc Zyngier1-1/+13
Bill Gatliff reported the following bug when using the irq_chip facility of the pca953x driver on a PPC platform: BUG: scheduling while atomic: insmod/1530/0x00000002 He traced it back to an i2c transaction in pca953x_irq_set_type(), which can be called with interrupt disabled (from __setup_irq()). As the i2c controller can sleep while sending a message, this qualifies as a bad idea. This patch moves the i2c transaction to pca953x_irq_bus_sync_unlock(), where it is actually safe to send an i2c message. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Marc Zyngier <maz@misterjones.org> Reported-by: Bill Gatliff <bgat@billgatliff.com> Cc: Eric Miao <eric.y.miao@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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