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* v4l: Remove reference to bkl ioctl in compat ioctl handlingFrederic Weisbecker2010-08-141-6/+1
| | | | | | | | | | | There are no more users of struct file_operations:ioctl. These can be safely removed. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Mauro Carvalho Chehab <mchehab@redhat.com> Cc: John Kacur <jkacur@redhat.com> Cc: Hans Verkuil <hverkuil@xs4all.nl>
* Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6Linus Torvalds2010-08-132-3/+3
|\ | | | | | | | | | | | | | | | | | | * 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6: [S390] partitions: fix build error in ibm partition detection code [S390] appldata: fix dev_get_stats 64 bit conversion [S390] wire up prlimit64 and fanotify* syscalls [S390] zcrypt: fix Kconfig dependencies [S390] sys_personality: follow u_long to unsigned int conversion [S390] dasd: fix format string types
| * [S390] zcrypt: fix Kconfig dependenciesHeiko Carstens2010-08-131-1/+1
| | | | | | | | | | | | | | | | | | | | | | warning: (ZCRYPT && CRYPTO && CRYPTO_HW && S390 && ZCRYPT=y) selects ZCRYPT_MONOLITHIC which has unmet direct dependencies (ZCRYPT=m) ZCRYPT_MONOLITHIC should not depend on ZCRYPT="m" when it gets selected if ZCRYPT="y". Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * [S390] dasd: fix format string typesHeiko Carstens2010-08-131-2/+2
| | | | | | | | | | | | | | | | | | | | | | Get rid of these warnings: drivers/s390/block/dasd.c: In function '__dasd_device_check_expire': drivers/s390/block/dasd.c:1330: warning: format '%i' expects type 'int', but argument 4 has type 'long unsigned int' drivers/s390/block/dasd.c:1337: warning: format '%i' expects type 'int', but argument 4 has type 'long unsigned int' Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* | Merge branch 'v4l_for_linus' of ↵Linus Torvalds2010-08-1315-14/+22
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6 * 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6: V4L/DVB: v4l2-ctrls.c: needs to include slab.h V4L/DVB: fix Kconfig to depends on VIDEO_IR V4L/DVB: Fix IR_CORE dependencies
| * | V4L/DVB: v4l2-ctrls.c: needs to include slab.hRandy Dunlap2010-08-121-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | v4l2-ctrls.c needs to include slab.h to prevent build errors: drivers/media/video/v4l2-ctrls.c:766: error: implicit declaration of function 'kzalloc' drivers/media/video/v4l2-ctrls.c:786: error: implicit declaration of function 'kfree' drivers/media/video/v4l2-ctrls.c:1528: error: implicit declaration of function 'kmalloc' Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
| * | V4L/DVB: fix Kconfig to depends on VIDEO_IRMauro Carvalho Chehab2010-08-1210-10/+10
| | | | | | | | | | | | | | | | | | | | | warning: (VIDEO_BT848 && MEDIA_SUPPORT && VIDEO_CAPTURE_DRIVERS && VIDEO_DEV && PCI && I2C && VIDEO_V4L2 && INPUT || VIDEO_SAA7134 && MEDIA_SUPPORT && VIDEO_CAPTURE_DRIVERS && VIDEO_V4L2 && VIDEO_DEV && PCI && I2C && INPUT || VIDEO_CX88 && MEDIA_SUPPORT && VIDEO_CAPTURE_DRIVERS && VIDEO_V4L2 && VIDEO_DEV && PCI && I2C && INPUT || VIDEO_IVTV && MEDIA_SUPPORT && VIDEO_CAPTURE_DRIVERS && VIDEO_V4L2 && PCI && I2C && INPUT || VIDEO_CX18 && MEDIA_SUPPORT && VIDEO_CAPTURE_DRIVERS && VIDEO_V4L2 && DVB_CORE && PCI && I2C && EXPERIMENTAL && INPUT || VIDEO_EM28XX && MEDIA_SUPPORT && VIDEO_CAPTURE_DRIVERS && VIDEO_V4L2 && V4L_USB_DRIVERS && USB && VIDEO_DEV && I2C && INPUT || VIDEO_TLG2300 && MEDIA_SUPPORT && VIDEO_CAPTURE_DRIVERS && VIDEO_V4L2 && V4L_USB_DRIVERS && USB && VIDEO_DEV && I2C && INPUT && SND && DVB_CORE || VIDEO_CX231XX && MEDIA_SUPPORT && VIDEO_CAPTURE_DRIVERS && VIDEO_V4L2 && V4L_USB_DRIVERS && USB && VIDEO_DEV && I2C && INPUT || DVB_BUDGET_CI && MEDIA_SUPPORT && DVB_CAPTURE_DRIVERS && DVB_CORE && DVB_BUDGET_CORE && I2C && INPUT || DVB_DM1105 && MEDIA_SUPPORT && DVB_CAPTURE_DRIVERS && DVB_CORE && PCI && I2C && INPUT || VIDEO_GO7007 && STAGING && !STAGING_EXCLUDE_BUILD && VIDEO_DEV && PCI && I2C && INPUT && SND || VIDEO_CX25821 && STAGING && !STAGING_EXCLUDE_BUILD && DVB_CORE && VIDEO_DEV && PCI && I2C && INPUT) selects VIDEO_IR which has unmet direct dependencies (IR_CORE) Acked-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
| * | V4L/DVB: Fix IR_CORE dependenciesMauro Carvalho Chehab2010-08-124-4/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As pointed by Randy Dunlap <randy.dunlap@oracle.com>: > ERROR: "ir_keydown" [drivers/media/video/ir-kbd-i2c.ko] undefined! > ERROR: "__ir_input_register" [drivers/media/video/ir-kbd-i2c.ko] undefined! > ERROR: "get_rc_map" [drivers/media/video/ir-kbd-i2c.ko] undefined! > ERROR: "ir_input_unregister" [drivers/media/video/ir-kbd-i2c.ko] undefined! > ERROR: "get_rc_map" [drivers/media/video/cx88/cx88xx.ko] undefined! > ERROR: "ir_repeat" [drivers/media/video/cx88/cx88xx.ko] undefined! > ERROR: "ir_input_unregister" [drivers/media/video/cx88/cx88xx.ko] undefined! > ERROR: "ir_keydown" [drivers/media/video/cx88/cx88xx.ko] undefined! > ERROR: "__ir_input_register" [drivers/media/video/cx88/cx88xx.ko] undefined! > ERROR: "get_rc_map" [drivers/media/video/bt8xx/bttv.ko] undefined! > ERROR: "ir_input_unregister" [drivers/media/video/bt8xx/bttv.ko] undefined! > ERROR: "__ir_input_register" [drivers/media/video/bt8xx/bttv.ko] undefined! > ERROR: "ir_g_keycode_from_table" [drivers/media/IR/ir-common.ko] undefined! > > > #5101: > (.text+0x8306e2): undefined reference to `ir_core_debug' > (.text+0x830729): undefined reference to `ir_core_debug' > ir-functions.c:(.text+0x830906): undefined reference to `ir_core_debug' > (.text+0x8309d8): undefined reference to `ir_g_keycode_from_table' > (.text+0x830acf): undefined reference to `ir_core_debug' > (.text+0x830b92): undefined reference to `ir_core_debug' > (.text+0x830bef): undefined reference to `ir_core_debug' > (.text+0x830c6a): undefined reference to `ir_core_debug' > (.text+0x830cf7): undefined reference to `ir_core_debug' > budget-ci.c:(.text+0x89f5c8): undefined reference to `ir_keydown' > budget-ci.c:(.text+0x8a0c58): undefined reference to `get_rc_map' > budget-ci.c:(.text+0x8a0c80): undefined reference to `__ir_input_register' > budget-ci.c:(.text+0x8a0ee0): undefined reference to `get_rc_map' > budget-ci.c:(.text+0x8a11cd): undefined reference to `ir_input_unregister' > (.text+0x8a8adb): undefined reference to `ir_input_unregister' > dvb-usb-remote.c:(.text+0x8a9188): undefined reference to `get_rc_map' > dvb-usb-remote.c:(.text+0x8a91b1): undefined reference to `__ir_input_register' > dvb-usb-remote.c:(.text+0x8a9238): undefined reference to `get_rc_map' > dib0700_core.c:(.text+0x8b04ca): undefined reference to `ir_keydown' > dib0700_devices.c:(.text+0x8b2ea8): undefined reference to `ir_keydown' > dib0700_devices.c:(.text+0x8b2ef0): undefined reference to `ir_keydown' Those breakages seem to be caused by two bad things at IR_CORE Kconfig: 1) cx23885 is using select for IR_CORE; 2) the dvb-usb and sms dependency for IR_CORE were missing. While here, allow users to un-select IR. Acked-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds2010-08-1329-352/+345
|\ \ \ | |_|/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (30 commits) ctcm: rename READ/WRITE defines to avoid redefinitions claw: rename READ/WRITE defines to avoid redefinitions phylib: available for any speed ethernet can: add limit for nframes and clean up signed/unsigned variables pkt_sched: Check .walk and .leaf class handlers pkt_sched: Fix sch_sfq vs tc_modify_qdisc oops caif-spi: Bugfix SPI_DATA_POS settings were inverted. caif: Bugfix - Increase default headroom size for control channel. net: make netpoll_rx return bool for !CONFIG_NETPOLL Bluetooth: Use 3-DH5 payload size for default ERTM max PDU size Bluetooth: Fix incorrect setting of remote_tx_win for L2CAP ERTM Bluetooth: Change default L2CAP ERTM retransmit timeout Bluetooth: Fix endianness issue with L2CAP MPS configuration net: Use NET_XMIT_SUCCESS where possible. isdn: mISDN: call pci_disable_device() if pci_probe() failed isdn: avm: call pci_disable_device() if pci_probe() failed isdn: avm: call pci_disable_device() if pci_probe() failed usbnet: rx_submit() should return an error code. pkt_sched: Add some basic qdisc class ops verification. Was: [PATCH] sfq: add dummy bind/unbind handles pkt_sched: sch_sfq: Add dummy unbind_tcf and put handles. Was: [PATCH] sfq: add dummy bind/unbind handles ...
| * | ctcm: rename READ/WRITE defines to avoid redefinitionsUrsula Braun2010-08-135-110/+118
| | | | | | | | | | | | | | | | | | | | | | | | READ/WRITE seems to be a bit too generic for defines in a device driver. Just rename them to CTCM_READ/CTCM_WRITE to avoid warnings. Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | claw: rename READ/WRITE defines to avoid redefinitionsHeiko Carstens2010-08-132-61/+61
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | READ/WRITE seems to be a bit too generic for defines in a device driver. Just rename them to READ_CHANNEL/WRITE_CHANNEL which should suffice. Fixes this: In file included from drivers/s390/net/claw.c:93: drivers/s390/net/claw.h:78:1: warning: "WRITE" redefined In file included from /home2/heicarst/linux-2.6/arch/s390/include/asm/debug.h:12, from drivers/s390/net/claw.c:68: include/linux/fs.h:156:1: warning: this is the location of the previous definition Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | phylib: available for any speed ethernetRandy Dunlap2010-08-121-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Several gigabit network drivers (SB1250_MAC, TIGON3, FSL, GIANFAR, UCC_GETH, MV643XX_ETH, XILINX_LL_TEMAC, S6GMAC, STMMAC_ETH, PASEMI_MAC, and OCTEON_ETHERNET) select PHYLIB. These drivers are not under NET_ETHERNET (10/100 mbit), so this warning is generated (long, irrelevant parts are omitted): warning: (NET_DSA && NET && EXPERIMENTAL && NET_ETHERNET && !S390 || ... || SB1250_MAC && NETDEVICES && NETDEV_1000 && SIBYTE_SB1xxx_SOC || TIGON3 && NETDEVICES && NETDEV_1000 && PCI || FSL_PQ_MDIO && NETDEVICES && NETDEV_1000 && FSL_SOC || GIANFAR && NETDEVICES && NETDEV_1000 && FSL_SOC || UCC_GETH && NETDEVICES && NETDEV_1000 && QUICC_ENGINE || MV643XX_ETH && NETDEVICES && NETDEV_1000 && (MV64X60 || PPC32 || PLAT_ORION) || XILINX_LL_TEMAC && NETDEVICES && NETDEV_1000 && (PPC || MICROBLAZE) || S6GMAC && NETDEVICES && NETDEV_1000 && XTENSA_VARIANT_S6000 || STMMAC_ETH && NETDEV_1000 && NETDEVICES && CPU_SUBTYPE_ST40 || PASEMI_MAC && NETDEVICES && NETDEV_10000 && PPC_PASEMI && PCI || OCTEON_ETHERNET && STAGING && !STAGING_EXCLUDE_BUILD && CPU_CAVIUM_OCTEON) selects PHYLIB which has unmet direct dependencies (!S390 && NET_ETHERNET) PHYLIB is used by non-10/100 mbit ethernet drivers, so change the dependencies to be NETDEVICES instead of NET_ETHERNET. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | caif-spi: Bugfix SPI_DATA_POS settings were inverted.Sjur Braendeland2010-08-111-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | The setting of SPI_DATA_POS depending on CONFIG_CAIF_SPI_SYNC where inverted. Signed-off-by: Sjur Braendeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | Merge branch 'master' of ↵David S. Miller2010-08-1113-135/+88
| |\ \ | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6
| | * | iwlagn: fix rts cts protectionJohannes Berg2010-08-0911-133/+87
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently the driver will try to protect all frames, which leads to a lot of odd things like sending an RTS with a zeroed RA before multicast frames, which is clearly bogus. In order to fix all of this, we need to take a step back and see what we need to achieve: * we need RTS/CTS protection if requested by the AP for the BSS, mac80211 tells us this * in that case, CTS-to-self should only be enabled when mac80211 tells us * additionally, as a hardware workaround, on some devices we have to protect aggregated frames with RTS To achieve the first two items, set up the RXON accordingly and set the protection required flag in the transmit command when mac80211 requests protection for the frame. To achieve the last item, set the rate-control RTS-requested flag for all stations that we have aggregation sessions with, and set the protection required flag when sending aggregated frames (on those devices where this is required). Since otherwise bugs can occur, do not allow the user to override the RTS-for-aggregation setting from sysfs any more. Finally, also clean up the way all these flags get set in the driver and move everything into the device-specific functions. Cc: stable@kernel.org [2.6.35] Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| | * | libertas: fix build break by including linux/sched.hJohn W. Linville2010-08-091-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | CC [M] drivers/net/wireless/libertas/cfg.o /home/greearb/git/wireless-testing/drivers/net/wireless/libertas/cfg.c: In function ‘lbs_scan_worker’: /home/greearb/git/wireless-testing/drivers/net/wireless/libertas/cfg.c:722: error: ‘TASK_NORMAL’ undeclared (first use in this function) /home/greearb/git/wireless-testing/drivers/net/wireless/libertas/cfg.c:722: error: (Each undeclared identifier is reported only once /home/greearb/git/wireless-testing/drivers/net/wireless/libertas/cfg.c:722: error: for each function it appears in.) /home/greearb/git/wireless-testing/drivers/net/wireless/libertas/cfg.c: In function ‘lbs_cfg_connect’: /home/greearb/git/wireless-testing/drivers/net/wireless/libertas/cfg.c:1267: error: ‘TASK_INTERRUPTIBLE’ undeclared (first use in this function) /home/greearb/git/wireless-testing/drivers/net/wireless/libertas/cfg.c:1267: error: implicit declaration of function ‘signal_pending’ /home/greearb/git/wireless-testing/drivers/net/wireless/libertas/cfg.c:1267: error: implicit declaration of function ‘schedule_timeout’ Reported-by: Ben Greear <greearb@candelatech.com> Reported-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| | * | Revert "p54pci: Add PCI ID for SMC2802W"John W. Linville2010-08-091-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This reverts commit 5f7aebd845a9d2ed42f36b7333579ec3534b4713. Apparently, that PCI ID data was incorrectly taken from the subsystem information. The actual ID matches another already known ID. Signed-off-by: John W. Linville <linville@tuxdriver.com>
| * | | isdn: mISDN: call pci_disable_device() if pci_probe() failedKulikov Vasiliy2010-08-101-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Driver should call pci_disable_device() if it returns from pci_probe() with error. Signed-off-by: Kulikov Vasiliy <segooon@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | isdn: avm: call pci_disable_device() if pci_probe() failedKulikov Vasiliy2010-08-101-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Driver should call pci_disable_device() if it returns from pci_probe() with error. Signed-off-by: Kulikov Vasiliy <segooon@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | isdn: avm: call pci_disable_device() if pci_probe() failedKulikov Vasiliy2010-08-101-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Driver should call pci_disable_device() if it returns from pci_probe() with error. Signed-off-by: Kulikov Vasiliy <segooon@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | usbnet: rx_submit() should return an error code.David S. Miller2010-08-101-6/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch makes rx_submit() return an error code, and makes some call sites that care check the return value. This is important because it lets us properly handle cases where the device isn't ready to handle URB submissions (e.g., when it is autosuspended under some drivers); previously, we would attempt and fail to submit URBs and reschedule ourselves to try and fail again. This patch is against Linus's 2.6 repo commit 45d7f32c7a43cbb9592886d38190e379e2eb2226. Signed-Off-By: Elizabeth Jones <ellyjones@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | qlcnic: using too much stackDan Carpenter2010-08-101-6/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | qlcnic_pci_info structs are 128 bytes so an array of 8 uses 1024 bytes. That's a lot if you run with 4K stacks. I allocated them with kcalloc() instead. Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | qlcnic: clean up qlcnic_init_pci_info()Dan Carpenter2010-08-101-22/+23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In the original code we allocated memory conditionally and freed it in the error handling unconditionally. It turns out that this function is only called during initialization and "adapter->npars" and "adapter->eswitch" are always NULL at the start of the function. I removed those checks. Also since I was cleaning things, I changed the error handling for qlcnic_get_pci_info() and pulled everything in an indent level. Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | phy.c: fix kernel-doc warningsRandy Dunlap2010-08-101-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix phy.c kernel-doc notation: Warning(drivers/net/phy/phy.c:313): No description found for parameter 'ifr' Warning(drivers/net/phy/phy.c:313): Excess function parameter 'mii_data' description in 'phy_mii_ioctl' Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | farsync: Fix compile warnings.David S. Miller2010-08-101-7/+8
| |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | drivers/net/wan/farsync.c: In function 'fst_intr_rx': drivers/net/wan/farsync.c:1312: warning: cast to pointer from integer of different size drivers/net/wan/farsync.c: In function 'do_bottom_half_tx': drivers/net/wan/farsync.c:1407: warning: cast to pointer from integer of different size The "skb" and "mem" arguments being passed here are DMA addresses being programmed into the hardware registers, so pass them as the type that they actually are. And use the correct printf formatting in debug logging statements for these things to match the type change. Reported-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-2.6-dmLinus Torvalds2010-08-1216-382/+803
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-2.6-dm: (33 commits) dm mpath: support discard dm stripe: support discards dm: split discard requests on target boundaries dm stripe: optimize sector division dm stripe: move sector translation to a function dm: error return error for discards dm delay: support discard dm: zero silently drop discards dm: use dm_target_offset macro dm: factor out max_io_len_target_boundary dm: use common __issue_target_request for flush and discard support dm: linear support discard dm crypt: simplify crypt_ctr dm crypt: simplify crypt_config destruction logic dm: allow autoloading of dm mod dm: rename map_info flush_request to target_request_nr dm ioctl: refactor dm_table_complete dm snapshot: implement merge dm: do not initialise full request queue when bio based dm ioctl: make bio or request based device type immutable ...
| * | | dm mpath: support discardMike Snitzer2010-08-121-0/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Enable discard support in the DM multipath target. This discard support depends on a few discard-specific fixes to the block layer's request stacking driver methods. Discard requests are optional so don't allow a failed discard to trigger path failures. If there is a real problem with a given path the barriers associated with the discard (either before or after the discard) will cause path failure. That said, unconditionally passing discard failures up the stack is not ideal. This must be fixed once DM has more information about the nature of the underlying storage failure. Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com> Cc: Kiyoshi Ueda <k-ueda@ct.jp.nec.com>
| * | | dm stripe: support discardsMikulas Patocka2010-08-121-0/+39
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The DM core will submit a discard bio to the stripe target for each stripe in a striped DM device. The stripe target will determine stripe-specific portions of the supplied bio to be remapped into individual (at most 'num_discard_requests' extents). If a given stripe-specific discard bio doesn't touch a particular stripe the bio will be dropped. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
| * | | dm: split discard requests on target boundariesMike Snitzer2010-08-121-24/+23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Update __clone_and_map_discard to loop across all targets in a DM device's table when it processes a discard bio. If a discard crosses a target boundary it must be split accordingly. Update __issue_target_requests and __issue_target_request to allow a cloned discard bio to have a custom start sector and size. Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
| * | | dm stripe: optimize sector divisionMikulas Patocka2010-08-121-5/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Optimize sector division: If the number of stripes is a power of two, we can do shift and mask instead of division. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
| * | | dm stripe: move sector translation to a functionMikulas Patocka2010-08-121-7/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move sector to stripe translation into a function. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
| * | | dm: error return error for discardsMike Snitzer2010-08-121-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Have the error target respond to a discard request with a hard -EIO rather than fail the request with -EOPNOTSUPP. Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
| * | | dm delay: support discardMike Snitzer2010-08-121-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Enable discard support for the delay target. Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
| * | | dm: zero silently drop discardsMike Snitzer2010-08-121-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Have the zero target silently drop a discard rather than fail the request with -EOPNOTSUPP. Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
| * | | dm: use dm_target_offset macroAlasdair G Kergon2010-08-125-8/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Use new dm_target_offset() macro to avoid most references to ti->begin in dm targets. Signed-off-by: Alasdair G Kergon <agk@redhat.com>
| * | | dm: factor out max_io_len_target_boundaryMike Snitzer2010-08-121-8/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Split max_io_len_target_boundary out of max_io_len so that the discard support can make use of it without duplicating max_io_len code. Avoiding max_io_len's split_io logic enables DM's discard support to submit the entire discard request to a target. But discards must still be split on target boundaries. Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
| * | | dm: use common __issue_target_request for flush and discard supportMike Snitzer2010-08-121-8/+22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Rename __flush_target to __issue_target_request now that it is used to issue both flush and discard requests. Introduce __issue_target_requests as a convenient wrapper to __issue_target_request 'num_flush_requests' or 'num_discard_requests' times per target. Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
| * | | dm: linear support discardMike Snitzer2010-08-124-12/+99
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Allow discards to be passed through to linear mappings if at least one underlying device supports it. Discards will be forwarded only to devices that support them. A target that supports discards should set num_discard_requests to indicate how many times each discard request must be submitted to it. Verify table's underlying devices support discards prior to setting the associated DM device as capable of discards (via QUEUE_FLAG_DISCARD). Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Reviewed-by: Joe Thornber <thornber@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
| * | | dm crypt: simplify crypt_ctrMilan Broz2010-08-121-81/+104
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Allocate cipher strings indpendently of struct crypt_config and move cipher parsing and allocation into a separate function to prepare for supporting the cryptoapi format e.g. "xts(aes)". No functional change in this patch. Signed-off-by: Milan Broz <mbroz@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
| * | | dm crypt: simplify crypt_config destruction logicMilan Broz2010-08-121-87/+93
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use just one label and reuse common destructor for crypt target. Parse remaining argv arguments in logic order. Also do not ignore error values from IV init and set key functions. No functional change in this patch except changed return codes based on above. Signed-off-by: Milan Broz <mbroz@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
| * | | dm: allow autoloading of dm modPeter Rajnoha2010-08-121-2/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add devname:mapper/control and MAPPER_CTRL_MINOR module alias to support dm-mod module autoloading. Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Peter Rajnoha <prajnoha@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
| * | | dm: rename map_info flush_request to target_request_nrMike Snitzer2010-08-123-12/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 'target_request_nr' is a more generic name that reflects the fact that it will be used for both flush and discard support. Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
| * | | dm ioctl: refactor dm_table_completeWill Drewry2010-08-123-38/+52
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This change unifies the various checks and finalization that occurs on a table prior to use. By doing so, it allows table construction without traversing the dm-ioctl interface. Signed-off-by: Will Drewry <wad@chromium.org> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
| * | | dm snapshot: implement mergeMikulas Patocka2010-08-121-0/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Implement merge method for the snapshot origin to improve read performance. Without merge method, dm asks the upper layers to submit smallest possible bios --- one page. Submitting such small bios impacts performance negatively when reading or writing the origin device. Without this patch, CPU consumption when reading the origin on lvm on md-raid0 was 6 to 12%, with this patch, it drops to 1 to 4%. Note: in my testing, it actually degraded performance in some settings, I traced it to Maxtor disks having problems with > 512-sector requests. Reducing the number of sectors to /sys/block/sd*/queue/max_sectors_kb to 256 fixed the read performance. I think we don't have to care about weird disks that actually degrade performance because of large requests being sent to them. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
| * | | dm: do not initialise full request queue when bio basedMike Snitzer2010-08-123-26/+79
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Change bio-based mapped devices no longer to have a fully initialized request_queue (request_fn, elevator, etc). This means bio-based DM devices no longer register elevator sysfs attributes ('iosched/' tree or 'scheduler' other than "none"). In contrast, a request-based DM device will continue to have a full request_queue and will register elevator sysfs attributes. Therefore a user can determine a DM device's type by checking if elevator sysfs attributes exist. First allocate a minimalist request_queue structure for a DM device (needed for both bio and request-based DM). Initialization of a full request_queue is deferred until it is known that the DM device is request-based, at the end of the table load sequence. Factor DM device's request_queue initialization: - common to both request-based and bio-based into dm_init_md_queue(). - specific to request-based into dm_init_request_based_queue(). The md->type_lock mutex is used to protect md->queue, in addition to md->type, during table_load(). A DM device's first table_load will establish the immutable md->type. But md->queue initialization, based on md->type, may fail at that time (because blk_init_allocated_queue cannot allocate memory). Therefore any subsequent table_load must (re)try dm_setup_md_queue independently of establishing md->type. Signed-off-by: Mike Snitzer <snitzer@redhat.com> Acked-by: Kiyoshi Ueda <k-ueda@ct.jp.nec.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
| * | | dm ioctl: make bio or request based device type immutableMike Snitzer2010-08-123-7/+50
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Determine whether a mapped device is bio-based or request-based when loading its first (inactive) table and don't allow that to be changed later. This patch performs different device initialisation in each of the two cases. (We don't think it's necessary to add code to support changing between the two types.) Allowed md->type transitions: DM_TYPE_NONE to DM_TYPE_BIO_BASED DM_TYPE_NONE to DM_TYPE_REQUEST_BASED We now prevent table_load from replacing the inactive table with a conflicting type of table even after an explicit table_clear. Introduce 'type_lock' into the struct mapped_device to protect md->type and to prepare for the next patch that will change the queue initialization and allocate memory while md->type_lock is held. Signed-off-by: Mike Snitzer <snitzer@redhat.com> Acked-by: Kiyoshi Ueda <k-ueda@ct.jp.nec.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com> drivers/md/dm-ioctl.c | 15 +++++++++++++++ drivers/md/dm.c | 37 ++++++++++++++++++++++++++++++------- drivers/md/dm.h | 5 +++++ include/linux/dm-ioctl.h | 4 ++-- 4 files changed, 52 insertions(+), 9 deletions(-)
| * | | dm: skip second flush on bio unsupported errorMikulas Patocka2010-08-121-2/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When processing barriers, skip the second flush if processing the bio failed with -EOPNOTSUPP. This can happen with discard+barrier requests. If the device doesn't support discard, there would be two useless SYNCHRONIZE CACHE commands. The first dm_flush cannot be so easily optimized out, so we leave it there. Previously, -EOPNOTSUPP could be received in dec_pending only with empty barriers and we ignored that error, assuming the device not supporting cache flushes has cache always consistent. With the addition of discard barriers, this -EOPNOTSUPP can also be generated by discards and we must record it in md->barrier_error for process_barrier. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
| * | | dm snapshot: persistent use define for disk header chunk sizeTomohiro Kusumi2010-08-121-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes hard-coded value for the size of a chunk that includes disk header for persistent snapshot. It should be changed to existing macro NUM_SNAPSHOT_HDR_CHUNKS instead of using hard-coded value 1. Signed-off-by: Tomohiro Kusumi <kusumi.tomohiro@jp.fujitsu.com> Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
| * | | dm crypt: use kstrdupJulia Lawall2010-08-121-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use kstrdup when the goal of an allocation is copy a string into the allocated region. The semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression from,to; expression flag,E1,E2; statement S; @@ - to = kmalloc(strlen(from) + 1,flag); + to = kstrdup(from, flag); ... when != \(from = E1 \| to = E1 \) if (to==NULL || ...) S ... when != \(from = E2 \| to = E2 \) - strcpy(to, from); // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
| * | | dm ioctl: use nonseekable_openArnd Bergmann2010-08-121-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The dm control device does not implement read/write, so it has no use for seeking. Using no_llseek prevents falling back to default_llseek, which requires the BKL. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
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