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2011-07-30Merge branch 'next/dt' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc * 'next/dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc: (21 commits) arm/dt: tegra devicetree support arm/versatile: Add device tree support dt/irq: add irq_domain_generate_simple() helper irq: add irq_domain translation infrastructure dmaengine: imx-sdma: add device tree probe support dmaengine: imx-sdma: sdma_get_firmware does not need to copy fw_name dmaengine: imx-sdma: use platform_device_id to identify sdma version mmc: sdhci-esdhc-imx: add device tree probe support mmc: sdhci-pltfm: dt device does not pass parent to sdhci_alloc_host mmc: sdhci-esdhc-imx: get rid of the uses of cpu_is_mx() mmc: sdhci-esdhc-imx: do not reference platform data after probe mmc: sdhci-esdhc-imx: extend card_detect and write_protect support for mx5 net/fec: add device tree probe support net: ibm_newemac: convert it to use of_get_phy_mode dt/net: add helper function of_get_phy_mode net/fec: gasket needs to be enabled for some i.mx serial/imx: add device tree probe support serial/imx: get rid of the uses of cpu_is_mx1() arm/dt: Add dtb make rule arm/dt: Add skeleton dtsi file ...
2011-07-30Merge git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-watchdogLinus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-watchdog: (25 commits) watchdog: WatchDog Timer Driver Core - Add minimum and max timeout watchdog: WatchDog Timer Driver Core - Add ioctl call watchdog: WatchDog Timer Driver Core - Add nowayout feature watchdog: WatchDog Timer Driver Core - Add Magic Close feature watchdog: WatchDog Timer Driver Core - Add WDIOC_SETTIMEOUT and WDIOC_GETTIMEOUT ioctl watchdog: WatchDog Timer Driver Core - Add WDIOC_SETOPTIONS ioctl watchdog: WatchDog Timer Driver Core - Add WDIOC_KEEPALIVE ioctl watchdog: WatchDog Timer Driver Core - Add basic ioctl functionality watchdog: WatchDog Timer Driver Core - Add basic framework watchdog: hpwdt: add next gen HP servers watchdog: it8712f_wdt.c: improve includes watchdog: at91sam9/wdt: move register header to drivers watchdog: Add Xilinx watchdog timer driver watchdog: remove empty pm-functions watchdog: sp805: Flush posted writes in enable/disable. watchdog: sp805: Don't write 0 to the load value register. watchdog: imx2_wdt: add device tree probe support watchdog: s3c2410: Add support for device tree based probe watchdog: mpcore_wdt: Add suspend/resume support. watchdog: mtx1-wdt: use dev_{err,info} instead of printk() ...
2011-07-28Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparcLinus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc: n2_crypto: Attach on Niagara-T3. n2rng: Attach on Niagara-T3. sparc: Detect and handle UltraSPARC-T3 cpu types. sparc: Don't do expensive hypervisor PCR write unless necessary. sparc: Add T3 sun4v cpu type and hypervisor group defines. sparc: Don't leave sparc_pmu_type NULL on sun4v.
2011-07-28Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (32 commits) tg3: Remove 5719 jumbo frames and TSO blocks tg3: Break larger frags into 4k chunks for 5719 tg3: Add tx BD budgeting code tg3: Consolidate code that calls tg3_tx_set_bd() tg3: Add partial fragment unmapping code tg3: Generalize tg3_skb_error_unmap() tg3: Remove short DMA check for 1st fragment tg3: Simplify tx bd assignments tg3: Reintroduce tg3_tx_ring_info ASIX: Use only 11 bits of header for data size ASIX: Simplify condition in rx_fixup() Fix cdc-phonet build bonding: reduce noise during init bonding: fix string comparison errors net: Audit drivers to identify those needing IFF_TX_SKB_SHARING cleared net: add IFF_SKB_TX_SHARED flag to priv_flags net: sock_sendmsg_nosec() is static forcedeth: fix vlans gianfar: fix bug caused by 87c288c6e9aa31720b72e2bc2d665e24e1653c3e gro: Only reset frag0 when skb can be pulled ...
2011-07-28Merge branch 'for-linus' of git://neil.brown.name/mdLinus Torvalds
* 'for-linus' of git://neil.brown.name/md: (75 commits) md/raid10: handle further errors during fix_read_error better. md/raid10: Handle read errors during recovery better. md/raid10: simplify read error handling during recovery. md/raid10: record bad blocks due to write errors during resync/recovery. md/raid10: attempt to fix read errors during resync/check md/raid10: Handle write errors by updating badblock log. md/raid10: clear bad-block record when write succeeds. md/raid10: avoid writing to known bad blocks on known bad drives. md/raid10 record bad blocks as needed during recovery. md/raid10: avoid reading known bad blocks during resync/recovery. md/raid10 - avoid reading from known bad blocks - part 3 md/raid10: avoid reading from known bad blocks - part 2 md/raid10: avoid reading from known bad blocks - part 1 md/raid10: Split handle_read_error out from raid10d. md/raid10: simplify/reindent some loops. md/raid5: Clear bad blocks on successful write. md/raid5. Don't write to known bad block on doubtful devices. md/raid5: write errors should be recorded as bad blocks if possible. md/raid5: use bad-block log to improve handling of uncorrectable read errors. md/raid5: avoid reading from known bad blocks. ...
2011-07-28n2_crypto: Attach on Niagara-T3.David S. Miller
A small modification was necessary since in the machine description for 'n2cp' and 'ncp' nodes, there no longer is an 'intr' property. That's OK because this property was always nothing more than an array of integers '1' ... 'nr_inos + 1' so we can just compute it in-place. Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-28n2rng: Attach on Niagara-T3.David S. Miller
And stop referring to Victoria Falls, as the attribute we're talking about is whether the rng is multi-unit capable which applies to several chip variants now. Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-28watchdog: WatchDog Timer Driver Core - Add minimum and max timeoutWim Van Sebroeck
Add min_timeout (minimum timeout) and max_timeout values so that the framework can check if the new timeout value is between the minimum and maximum timeout values. If both values are 0, then the framework will leave the check for the watchdog device driver itself. Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Wim Van Sebroeck <wim@iguana.be> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Wolfram Sang <w.sang@pengutronix.de>
2011-07-28watchdog: WatchDog Timer Driver Core - Add ioctl callWim Van Sebroeck
Add support for extra ioctl calls by adding a ioctl watchdog operation. This operation will be called before we do our own handling of ioctl commands. This way we can override the internal ioctl command handling and we can also add extra ioctl commands. The ioctl watchdog operation should return the appropriate error codes or -ENOIOCTLCMD if the ioctl command should be handled through the internal ioctl handling of the framework. Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Wim Van Sebroeck <wim@iguana.be> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Wolfram Sang <w.sang@pengutronix.de>
2011-07-28watchdog: WatchDog Timer Driver Core - Add nowayout featureWim Van Sebroeck
Add support for the nowayout feature to the WatchDog Timer Driver Core framework. This feature prevents the watchdog timer from being stopped. Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Wim Van Sebroeck <wim@iguana.be> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Wolfram Sang <w.sang@pengutronix.de>
2011-07-28watchdog: WatchDog Timer Driver Core - Add Magic Close featureWim Van Sebroeck
Add support for the Magic Close feature to the WatchDog Timer Driver Core framework. Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Wim Van Sebroeck <wim@iguana.be> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Wolfram Sang <w.sang@pengutronix.de>
2011-07-28watchdog: WatchDog Timer Driver Core - Add WDIOC_SETTIMEOUT and ↵Wim Van Sebroeck
WDIOC_GETTIMEOUT ioctl This part add's the WDIOC_SETTIMEOUT and WDIOC_GETTIMEOUT ioctl functionality to the WatchDog Timer Driver Core framework. Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Wim Van Sebroeck <wim@iguana.be> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Wolfram Sang <w.sang@pengutronix.de>
2011-07-28watchdog: WatchDog Timer Driver Core - Add WDIOC_SETOPTIONS ioctlWim Van Sebroeck
This part add's the WDIOC_SETOPTIONS ioctl functionality to the WatchDog Timer Driver Core framework. Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Wim Van Sebroeck <wim@iguana.be> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Wolfram Sang <w.sang@pengutronix.de>
2011-07-28watchdog: WatchDog Timer Driver Core - Add WDIOC_KEEPALIVE ioctlWim Van Sebroeck
This part add's the WDIOC_KEEPALIVE ioctl functionality to the WatchDog Timer Driver Core framework. Please note that the WDIOF_KEEPALIVEPING bit has to be set in the watchdog_info options field. Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Wim Van Sebroeck <wim@iguana.be> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Wolfram Sang <w.sang@pengutronix.de>
2011-07-28watchdog: WatchDog Timer Driver Core - Add basic ioctl functionalityWim Van Sebroeck
This part add's the basic ioctl functionality to the WatchDog Timer Driver Core framework. The supported ioctl call's are: WDIOC_GETSUPPORT WDIOC_GETSTATUS WDIOC_GETBOOTSTATUS Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Wim Van Sebroeck <wim@iguana.be> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Wolfram Sang <w.sang@pengutronix.de>
2011-07-28watchdog: WatchDog Timer Driver Core - Add basic frameworkWim Van Sebroeck
The WatchDog Timer Driver Core is a framework that contains the common code for all watchdog-driver's. It also introduces a watchdog device structure and the operations that go with it. This is the introduction of this framework. This part supports the minimal watchdog userspace API (or with other words: the functionality to use /dev/watchdog's open, release and write functionality as defined in the simplest watchdog API). Extra functionality will follow in the next set of patches. Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Wim Van Sebroeck <wim@iguana.be> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Wolfram Sang <w.sang@pengutronix.de>
2011-07-28watchdog: hpwdt: add next gen HP serversThomas Mingarelli
This patch is required to enable hpwdt to work on next generation HP servers with iLO. Signed-off-by: Thomas Mingarelli <thomas.mingarelli@hp.com> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2011-07-28tg3: Remove 5719 jumbo frames and TSO blocksMatt Carlson
The A0 revision of this chip is the only device that requires these features to be disabled. Signed-off-by: Matt Carlson <mcarlson@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-28tg3: Break larger frags into 4k chunks for 5719Matt Carlson
The 5719 has bug where RDMAs larger than 4k can cause problems. This patch works around the problem by dividing larger DMA requests into something the hardware can handle. Signed-off-by: Matt Carlson <mcarlson@broadcom.com> Reviewed-by: Michael Chan <mchan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-28tg3: Add tx BD budgeting codeMatt Carlson
As the driver breaks large skb fragments into smaller submissions to the hardware, there is a new danger that BDs might get exhausted before all fragments have been mapped. This patch adds code to make sure tx BDs aren't oversubscribed and flag the condition if it happens. Signed-off-by: Matt Carlson <mcarlson@broadcom.com> Reviewed-by: Michael Chan <mchan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-28tg3: Consolidate code that calls tg3_tx_set_bd()Matt Carlson
This patch consolidates all code that populates tx BDs into a single routine. Setting tx BDs needs to be more carefully controlled to see if workarounds need to be applied. Signed-off-by: Matt Carlson <mcarlson@broadcom.com> Reviewed-by: Michael Chan <mchan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-28tg3: Add partial fragment unmapping codeMatt Carlson
The following patches are going to break skb fragments into smaller sizes. This patch attempts to make the change easier to digest by only addressing the skb teardown portion. The patch modifies the driver to skip over any BDs that have a flag set that indicates the BD isn't the beginning of an skb fragment. Such BDs were a result of segmentation and do not need a pci_unmap_page() call. Signed-off-by: Matt Carlson <mcarlson@broadcom.com> Reviewed-by: Michael Chan <mchan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-28tg3: Generalize tg3_skb_error_unmap()Matt Carlson
In the following patches, unmapping skb fragments will get just as complicated as mapping them. This patch generalizes tg3_skb_error_unmap() and makes it the one-stop-shop for skb unmapping. Signed-off-by: Matt Carlson <mcarlson@broadcom.com> Reviewed-by: Michael Chan <mchan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-28tg3: Remove short DMA check for 1st fragmentMatt Carlson
The first fragment of an skb should always be greater than 8 bytes. Signed-off-by: Matt Carlson <mcarlson@broadcom.com> Reviewed-by: Michael Chan <mchan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-28tg3: Simplify tx bd assignmentsMatt Carlson
In the following patches, the process the driver will use to assign skb fragments to transmit BDs will get more complicated. To prepare for that new code, this patch seeks to simplify how transmit BDs are populated. It does this by separating the code that assigns the BD members from the logic that controls how the fields are set. Signed-off-by: Matt Carlson <mcarlson@broadcom.com> Reviewed-by: Michael Chan <mchan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-28tg3: Reintroduce tg3_tx_ring_infoMatt Carlson
The following patches will require the use of an additional flag in the ring_info structure. The use of this flag is tx path specific, so this patch defines a specialized ring_info structure. Signed-off-by: Matt Carlson <mcarlson@broadcom.com> Reviewed-by: Michael Chan <mchan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-28ASIX: Use only 11 bits of header for data sizeMarek Vasut
The AX88772B uses only 11 bits of the header for the actual size. The other bits are used for something else. This causes dmesg full of messages: asix_rx_fixup() Bad Header Length This patch trims the check to only 11 bits. I believe on older chips, the remaining 5 top bits are unused. Signed-off-by: Marek Vasut <marek.vasut@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-28ASIX: Simplify condition in rx_fixup()Marek Vasut
Signed-off-by: Marek Vasut <marek.vasut@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-28Fix cdc-phonet buildChris Clayton
Try to send to correct address this time! ---------- Forwarded Message ---------- Subject: [PATCH] Fix cdc-phonet build Date: Saturday 23 Jul 2011 From: Chris Clayton <chris2553@googlemail.com> To: linux-net@vger.kernel.org cdc-phonet does not presently build on linux-3.0 because there is no entry for it in drivers/net/Makefile. This patch adds that entry. Signed-off-by: Chris Clayton <chris2553@googlemail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-28bonding: reduce noise during initAndy Gospodarek
On Tue, Jul 26, 2011 at 05:40:27PM -0700, Joe Perches wrote: > On Tue, 2011-07-26 at 17:37 -0700, Jay Vosburgh wrote: > > Joe Perches <joe@perches.com> wrote: > > >I'd prefer you don't separate the format string > > >into multiple pieces. > > Why not? To me, it looks easier to read split into sections > > that don't wrap lines. > > Harder to grep for a dmesg and the > defect rate of these split formats is > typically higher than single strings > because of bad spacing between string > segments. > I noticed that you took some time back in late 2009 to 'consolidate' the split format-strings present in the bonding driver at the time and I've decided I'm fine to leave them the way they are. The main point of my patch was to change the output and I would like to get that included. Here is my updated patch... Subject: [PATCH net-next-2.6 v2] bonding: reduce noise during init Many are using sysfs to configure bonding rather than module options, so there is no need for bonding to throw this warning in normal cases. Keep the message around when debugging is enabled as it might be useful for someone desperate enough to enable debugging, but eliminate it otherwise. Signed-off-by: Andy Gospodarek <andy@greyhouse.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-28bonding: fix string comparison errorsAndy Gospodarek
When a bond contains a device where one name is the subset of another (eth1 and eth10, for example), one cannot properly set the primary device or the currently active device. This was reported and based on work by Takuma Umeya. I also verified the problem and tested that this fix resolves it. V2: A few did not like the the current code or my changes, so I refactored bonding_store_primary and bonding_store_active_slave to be a bit cleaner, dropped the use of strnicmp since we did not really need the comparison to be case insensitive, and formatted the input string from sysfs so a comparison to IFNAMSIZ could be used. I also discovered an error in bonding_store_active_slave that would modify bond->primary_slave rather than bond->curr_active_slave before forcing the bonding driver to choose a new active slave. V3: Actually sending the proper patch.... Signed-off-by: Andy Gospodarek <andy@greyhouse.net> Reported-by: Takuma Umeya <tumeya@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-28net: Audit drivers to identify those needing IFF_TX_SKB_SHARING clearedNeil Horman
After the last patch, We are left in a state in which only drivers calling ether_setup have IFF_TX_SKB_SHARING set (we assume that drivers touching real hardware call ether_setup for their net_devices and don't hold any state in their skbs. There are a handful of drivers that violate this assumption of course, and need to be fixed up. This patch identifies those drivers, and marks them as not being able to support the safe transmission of skbs by clearning the IFF_TX_SKB_SHARING flag in priv_flags Signed-off-by: Neil Horman <nhorman@tuxdriver.com> CC: Karsten Keil <isdn@linux-pingi.de> CC: "David S. Miller" <davem@davemloft.net> CC: Jay Vosburgh <fubar@us.ibm.com> CC: Andy Gospodarek <andy@greyhouse.net> CC: Patrick McHardy <kaber@trash.net> CC: Krzysztof Halasa <khc@pm.waw.pl> CC: "John W. Linville" <linville@tuxdriver.com> CC: Greg Kroah-Hartman <gregkh@suse.de> CC: Marcel Holtmann <marcel@holtmann.org> CC: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-28forcedeth: fix vlansJiri Pirko
For some reason, when rxaccel is disabled, NV_RX3_VLAN_TAG_PRESENT is still set and some pseudorandom vids appear. So check for NETIF_F_HW_VLAN_RX as well. Also set correctly hw_features and set vlan mode on probe. Signed-off-by: Jiri Pirko <jpirko@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-28gianfar: fix bug caused by 87c288c6e9aa31720b72e2bc2d665e24e1653c3eSebastian Pöhn
commit 87c288c6e9aa31720b72e2bc2d665e24e1653c3e "gianfar: do vlan cleanup" has two issues: # permutation of rx and tx flags # enabling vlan tag insertion by default (this leads to unusable connections on some configurations) If VLAN insertion is requested (via ethtool) it will be set at an other point ... Signed-off-by: Sebastian Poehn <sebastian.poehn@belden.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-28Merge branch 'for-davem' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6
2011-07-28Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6: (54 commits) tpm_nsc: Fix bug when loading multiple TPM drivers tpm: Move tpm_tis_reenable_interrupts out of CONFIG_PNP block tpm: Fix compilation warning when CONFIG_PNP is not defined TOMOYO: Update kernel-doc. tpm: Fix a typo tpm_tis: Probing function for Intel iTPM bug tpm_tis: Fix the probing for interrupts tpm_tis: Delay ACPI S3 suspend while the TPM is busy tpm_tis: Re-enable interrupts upon (S3) resume tpm: Fix display of data in pubek sysfs entry tpm_tis: Add timeouts sysfs entry tpm: Adjust interface timeouts if they are too small tpm: Use interface timeouts returned from the TPM tpm_tis: Introduce durations sysfs entry tpm: Adjust the durations if they are too small tpm: Use durations returned from TPM TOMOYO: Enable conditional ACL. TOMOYO: Allow using argv[]/envp[] of execve() as conditions. TOMOYO: Allow using executable's realpath and symlink's target as conditions. TOMOYO: Allow using owner/group etc. of file objects as conditions. ... Fix up trivial conflict in security/tomoyo/realpath.c
2011-07-28md/raid10: handle further errors during fix_read_error better.NeilBrown
If we find more read/write errors we should record a bad block before failing the device. Signed-off-by: NeilBrown <neilb@suse.de>
2011-07-28md/raid10: Handle read errors during recovery better.NeilBrown
Currently when we get a read error during recovery, we simply abort the recovery. Instead, repeat the read in page-sized blocks. On successful reads, write to the target. On read errors, record a bad block on the destination, and only if that fails do we abort the recovery. As we now retry reads we need to know where we read from. This was in bi_sector but that can be changed during a read attempt. So store the correct from_addr and to_addr in the r10_bio for later access. Signed-off-by: NeilBrown<neilb@suse.de>
2011-07-28md/raid10: simplify read error handling during recovery.NeilBrown
If a read error is detected during recovery the code currently fails the read device. This isn't really necessary. recovery_request_write will signal a write error to end_sync_write and it will record a write error on the destination device which will record a bad block there or kick it from the array. So just remove this call to do md_error. Signed-off-by: NeilBrown <neilb@suse.de>
2011-07-28md/raid10: record bad blocks due to write errors during resync/recovery.NeilBrown
If we get a write error during resync/recovery don't fail the device but instead record a bad block. If that fails we can then fail the device. Signed-off-by: NeilBrown <neilb@suse.de>
2011-07-28md/raid10: attempt to fix read errors during resync/checkNeilBrown
We already attempt to fix read errors found during normal IO and a 'repair' process. It is best to try to repair them at any time they are found, so move a test so that during sync and check a read error will be corrected by over-writing with good data. If both (all) devices have known bad blocks in the sync section we won't try to fix even though the bad blocks might not overlap. That should be considered later. Also if we hit a read error during recovery we don't try to fix it. It would only be possible to fix if there were at least three copies of data, which is not very common with RAID10. But it should still be considered later. Signed-off-by: NeilBrown <neilb@suse.de>
2011-07-28md/raid10: Handle write errors by updating badblock log.NeilBrown
When we get a write error (in the data area, not in metadata), update the badblock log rather than failing the whole device. As the write may well be many blocks, we trying writing each block individually and only log the ones which fail. Signed-off-by: NeilBrown <neilb@suse.de>
2011-07-28md/raid10: clear bad-block record when write succeeds.NeilBrown
If we succeed in writing to a block that was recorded as being bad, we clear the bad-block record. This requires some delayed handling as the bad-block-list update has to happen in process-context. Signed-off-by: NeilBrown <neilb@suse.de>
2011-07-28md/raid10: avoid writing to known bad blocks on known bad drives.NeilBrown
Writing to known bad blocks on drives that have seen a write error is asking for trouble. So try to avoid these blocks. Signed-off-by: NeilBrown <neilb@suse.de>
2011-07-28md/raid10 record bad blocks as needed during recovery.NeilBrown
When recovering one or more devices, if all the good devices have bad blocks we should record a bad block on the device being rebuilt. If this fails, we need to abort the recovery. To ensure we don't think that we aborted later than we actually did, we need to move the check for MD_RECOVERY_INTR earlier in md_do_sync, in particular before mddev->curr_resync is updated. Signed-off-by: NeilBrown <neilb@suse.de>
2011-07-28md/raid10: avoid reading known bad blocks during resync/recovery.NeilBrown
During resync/recovery limit the size of the request to avoid reading into a bad block that does not start at-or-before the current read address. Similarly if there is a bad block at this address, don't allow the current request to extend beyond the end of that bad block. Now that we don't ever read from known bad blocks, it is safe to allow devices with those blocks into the array. Signed-off-by: NeilBrown <neilb@suse.de>
2011-07-28md/raid10 - avoid reading from known bad blocks - part 3NeilBrown
When attempting to repair a read error, don't read from devices with a known bad block. As we are only reading PAGE_SIZE blocks, we don't try to narrow down to smaller regions in the hope that only part of this page is bad - it isn't worth the effort. Signed-off-by: NeilBrown <neilb@suse.de>
2011-07-28md/raid10: avoid reading from known bad blocks - part 2NeilBrown
When redirecting a read error to a different device, we must again avoid bad blocks and possibly split the request. Spin_lock typo fixed thanks to Dan Carpenter <error27@gmail.com> Signed-off-by: NeilBrown <neilb@suse.de>
2011-07-28md/raid10: avoid reading from known bad blocks - part 1NeilBrown
This patch just covers the basic read path: 1/ read_balance needs to check for badblocks, and return not only the chosen slot, but also how many good blocks are available there. 2/ read submission must be ready to issue multiple reads to different devices as different bad blocks on different devices could mean that a single large read cannot be served by any one device, but can still be served by the array. This requires keeping count of the number of outstanding requests per bio. This count is stored in 'bi_phys_segments' On read error we currently just fail the request if another target cannot handle the whole request. Next patch refines that a bit. Signed-off-by: NeilBrown <neilb@suse.de>
2011-07-28md/raid10: Split handle_read_error out from raid10d.NeilBrown
raid10d() is too big and is about to get bigger, so split handle_read_error() out as a separate function. Signed-off-by: NeilBrown <neilb@suse.de>