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2009-01-11net_dma: acquire/release dma channels on ifup/ifdownDan Williams
The recent dmaengine rework removed the capability to remove dma device driver modules while net_dma is active. Rather than notify dmaengine-clients that channels are trying to be removed, we now rely on clients to notify dmaengine when they no longer have a need for channels. Teach net_dma to release channels by taking dmaengine references at netdevice open and dropping references at netdevice close. Acked-by: Maciej Sosnowski <maciej.sosnowski@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-11cxgb3: Keep LRO off if disabled when interface is downRoland Dreier
I have a system with a Chelsio adapter (driven by cxgb3) whose ports are part of a Linux bridge. Recently I updated the kernel and discovered that things stopped working because cxgb3 was doing LRO on packets that were passed into the bridge code for forwarding. (Incidentally, this problem manifested itself in a strange way that made debugging a bit interesting -- for some reason, the skb_warn_if_lro() check in bridge didn't trigger and these LROed packets were forwarded out a forcedeth interface, and caused the forcedeth transmit path to get stuck) This is because cxgb3 has no way of keeping state for the LRO flag until the interface is brought up, so if the bridging code disables LRO while the interface is down, then cxgb3_up() will just reenable LRO, and on my Debian system at least, the init scripts add interfaces to a bridge before bringing the interfaces up. Fix this by keeping track of each interface's LRO state in cxgb3 so that when bridge disables LRO, it stays disabled in cxgb3_up() when the interface is brought up. I did this by changing the rx_csum_offload flag into a pair of bit flags; the effect of this on the rx_eth() fast path is miniscule enough that it should be fine (eg on x86, a cmpb instruction becomes a testb instruction). Signed-off-by: Roland Dreier <rolandd@cisco.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-11sfc: SFT9001: Fix condition for LNPGA power-offBen Hutchings
Only the SFX7101 requires software power control. This was incorrectly being applied to the SFT9001 rev A as well. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-11dccp ccid-3: Fix RFC referenceGerrit Renker
Thanks to Wei and Arnaldo for pointing out the correct new reference for CCID-3. Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-11smsc911x: register irq with device name, not driver nameSteve Glendinning
This change lets "cat /proc/interrupts" show the name of the ethernet device (e.g. eth0) rather than the driver name (smsc911x). Signed-off-by: Steve Glendinning <steve.glendinning@smsc.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-11smsc911x: fix smsc911x_reg_read compiler warningSteve Glendinning
if this code path is ever hit, the platform_data struct isn't properly configured with a bus width flag so the device won't work (hence the BUG()). This patch adds a dummy return statement to eliminate this compiler warning: drivers/net/smsc911x.c: In function 'smsc911x_reg_read': drivers/net/smsc911x.c:148: warning: control reaches end of non-void function Signed-off-by: Steve Glendinning <steve.glendinning@smsc.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-11forcedeth: napi schedule lock fixAyaz Abdulla
This patch fixes a potential race condition between scheduling napi and completing napi poll. The call to netif_rx_schedule should be under protection of the lock (as is the completion), otherwise, interrupts could be masked off. Signed-off-by: Ayaz Abdulla <aabdulla@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-11net: fix section mismatch warnings in dccp/ccids/lib/tfrc.cLeonardo Potenza
Removed the __exit annotation of tfrc_lib_exit(), in order to suppress the following section mismatch messages: WARNING: net/dccp/dccp.o(.text+0xd9): Section mismatch in reference from the function ccid_cleanup_builtins() to the function .exit.text:tfrc_lib_exit() The function ccid_cleanup_builtins() references a function in an exit section. Often the function tfrc_lib_exit() has valid usage outside the exit section and the fix is to remove the __exit annotation of tfrc_lib_exit. WARNING: net/dccp/dccp.o(.init.text+0x48): Section mismatch in reference from the function ccid_initialize_builtins() to the function .exit.text:tfrc_lib_exit() The function __init ccid_initialize_builtins() references a function __exit tfrc_lib_exit(). This is often seen when error handling in the init function uses functionality in the exit path. The fix is often to remove the __exit annotation of tfrc_lib_exit() so it may be used outside an exit section. Signed-off-by: Leonardo Potenza <lpotenza@inwind.it> Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by: Gerrit Renker <gerrit@erg.abdn.ac.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-11forcedeth: remove mgmt unit for mcp79 chipsetAyaz Abdulla
This patch removes the feature flag for mgmt unit as it is not used for this chipset. Signed-off-by: Ayaz Abdulla <aabdulla@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-11qlge: Remove dynamic alloc of rx ring control blocks.Ron Mercer
Signed-off-by: Ron Mercer <ron.mercer@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-11qlge: Fix schedule while atomic issue.Ron Mercer
There is no need to sleep while waiting for the hardware semaphore to become available. Signed-off-by: Ron Mercer <ron.mercer@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-11qlge: Remove support for device ID 8000.Ron Mercer
Support for dev id 8000 is pushed out until 2.6.30. Signed-off-by: Ron Mercer <ron.mercer@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-11qlge: Get rid of split addresses in hardware control blocks.Ron Mercer
Signed-off-by: Ron Mercer <ron.mercer@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-11qlge: Get rid of volatile usage for shadow register.Ron Mercer
Putting back ql_read_sh_reg() function and using rmb() instead of volatile. Signed-off-by: Ron Mercer <ron.mercer@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-11forcedeth: version bump and copyrightAyaz Abdulla
This patch bumps up the version number and adds current year to copyright. Signed-off-by: Ayaz Abdulla <aabdulla@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-11forcedeth: xmit lock fixAyaz Abdulla
This patch fixes a potential race condition between xmit thread and xmit completion thread. The calculation of empty tx descriptors is not performed under the lock. This could cause it to set the stop flag while the completion thread finishes all tx's. This will result in the tx queue in stopped state and no one to wake it up. Signed-off-by: Ayaz Abdulla <aabdulla@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-11netdev: missing validate_address hooksStephen Hemminger
Some devices were converted incorrectly and are missing the validate address hooks. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-11netdev: add missing set_mac_address hookStephen Hemminger
Many drivers lost the ability to set ethernet address accidently during the net_device_ops conversion. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-11netdev: gianfar: add MII ioctl handlerClifford Wolf
This is the same kind of wrapper that can also be found in many other network device drivers. Tested with a freescale MPC8349E host CPU: Toggled the interface LEDs on a DP83865 PHY. Signed-off-by: Clifford Wolf <clifford@clifford.at> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-11drivers/net/wireless/libertas: move a dereference below a NULL testJulia Lawall
In each case, if the NULL test is necessary, then the dereference should be moved below the NULL test. I have also taken advantage of the availability of the value of priv->dev in the subsequent calls to netif_stop_queue and netif_carrier_off. The semantic patch that makes this change is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @@ type T; expression E; identifier i,fld; statement S; @@ - T i = E->fld; + T i; ... when != E when != i if (E == NULL) S + i = E->fld; // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Acked-by: Dan Williams <dcbw@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-11drivers/net/hamradio/6pack.c: move a dereference below a NULL testJulia Lawall
In each case, if the NULL test is necessary, then the dereference should be moved below the NULL test. The semantic patch that makes this change is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @@ type T; expression E; identifier i,fld; statement S; @@ - T i = E->fld; + T i; ... when != E when != i if (E == NULL) S + i = E->fld; // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-11drivers/isdn/hardware/mISDN: move a dereference below a NULL testJulia Lawall
In each case, if the NULL test is necessary, then the dereference should be moved below the NULL test. The semantic patch that makes this change is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @@ type T; expression E; identifier i,fld; statement S; @@ - T i = E->fld; + T i; ... when != E when != i if (E == NULL) S + i = E->fld; // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-11net/bridge/netfilter: move a dereference below a NULL testJulia Lawall
In each case, if the NULL test is necessary, then the dereference should be moved below the NULL test. The semantic patch that makes this change is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @@ type T; expression E; identifier i,fld; statement S; @@ - T i = E->fld; + T i; ... when != E when != i if (E == NULL) S + i = E->fld; // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-11net/tipc/bcast.h: use ARRAY_SIZEJulia Lawall
ARRAY_SIZE is more concise to use when the size of an array is divided by the size of its type or the size of its first element. The semantic patch that makes this change is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @i@ @@ #include <linux/kernel.h> @depends on i using "paren.iso"@ type T; T[] E; @@ - (sizeof(E)/sizeof(T)) + ARRAY_SIZE(E) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-11wimax: fix typo in kernel-doc for debugfs_dentry in struct wimax_devInaky Perez-Gonzalez
The kernel-doc was referring to member @debufs_dentry instead of @debugfs_dentry. Reported by Randy Dunlap http://marc.info/?l=linux-netdev&m=123147942302885&w=2 As well, escape the colon in the field's text description, as it is causing the generated text to be erraticly broken up (with paragraphs moved down). Could not find a reason why it is happening so, even when other field descriptions use colons and work as expected. Signed-off-by: Inaky Perez-Gonzalez <inaky@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-113c59x: Use device_set_wakeup_enableSteffen Klassert
Since dev->power.should_wakeup bit is used by the PCI core to decide whether the device should wake up the system from sleep states, set this bit by calling device_set_wakeup_enable(). This restores proper WOL for the 3c59x driver. Reported-and-tested-by: Graeme Wilford <gwilford@gmail.com> Reported-by: Gunnar Degnbol <degnbol@danbbs.dk> Signed-off-by: Steffen Klassert <klassert@mathematik.tu-chemnitz.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-11qeth: fix usage of netdev_opsFrank Blaschka
Have separate netdev_ops for OSA and HiperSocket/TR. Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-11qlge: Naming interrupt vectorsJesper Dangaard Brouer
Name interrupt vectors according to the new naming standard, by Robert Olsson and DaveM. The qlge driver were very close to the new standard, thus the change is kind of trivial. Signed-off-by: Jesper Dangaard Brouer <hawk@comx.dk> Signed-off-by: Ron Mercer <ron.mercer@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-11b44: fix misalignment and wasted space in rx handlingFelix Fietkau
Broadcom 4400 puts a header of configurable size (apparently needs to be at least 28 bytes) in front of received packets. When handling this, the previous code accidentally added the offset 30 *twice* for the software and once for the hardware, thereby cancelling out the IP alignment effect of the 30 byte padding and wasting an additional 30 bytes of memory per packet. This patch fixes this problem and improves routing throughput by about 30% on MIPS, where unaligned access is expensive. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-11ipcomp: Remove spurious truesize increaseHerbert Xu
When I made ipcomp use frags, I forgot to take out the original truesize update that was added for pskb_expand_head. As we no longer expand the head of skb, that update should have been removed. This bug is not related to the truesize warnings since we only made it bigger than what it should've been. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-11e1000e: Add process name to WARN message when detecting Mutex contentionDavid Graham
Adds process name of the current mutex holder to the WARN message output when the e1000e driver attempts to acquire the nvm_mutex and finds that it is already being held. With this patch the WARN message indicates both the process name of the current mutex holder and the process name of the attempted acquisition, which together will help to identify the contending codepaths. Signed-off-by: David Graham <david.graham@intel.com> Acked-by: Bruce Allan <bruce.w.allan@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-11r6040: bump release to 0.21Florian Fainelli
Bump version to 0.21 and release date to 09Jan2009. Signed-off-by: Florian Fainelli <florian@openwrt.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-11r6040: no longer mark r6040 as being experimentalFlorian Fainelli
We do not depend on EXPERIMENTAL and the driver is not experimental, so remove this warning. Signed-off-by: Florian Fainelli <florian@openwrt.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-11r6040: generate random ethernet MAC address when not initializedFlorian Fainelli
This patch makes the ethernet driver assign a random ethernet MAC address when the bootloader does not set it. Signed-off-by: Florian Fainelli <florian@openwrt.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-11r6040: fix ifconfig down and freeing of tx/rx descriptorsFlorian Fainelli
This patch fixes warnings and such traces that appear when doing an ifconfig down on the interface: WARNING: at arch/x86/kernel/pci-dma.c:376 dma_free_coherent+0x40/0x7d() Modules linked in: Signed-off-by: Joe Chou <joe.chou@rdc.com.tw> Signed-off-by: Florian Fainelli <florian@openwrt.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-11irda: fix incomplete conversation to internal statsAlexander Beregalov
Fix for commit af0490810c (irda: convert to internal stats) Signed-off-by: Alexander Beregalov <a.beregalov@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-10Linux 2.6.29-rc1Linus Torvalds
2009-01-10bootgraph: make the bootgraph script show async waiting timeArjan van de Ven
It is useful for diagnosing boot performance to see where async function calls are waiting on serialization... this patch adds this functionality to the bootgraph.pl script. The waiting time is shown as a half transparent, gray bar through the block that is waiting. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-10libata: only ports >= 0 need to synchronizeArjan van de Ven
In a discussio with Jeff Garzik, he mentioned that the serialization for the libata port probes only needs to be within the domain of a host. This means that for the first port of each host (with ID 0), we don't need to wait, so we can relax our serialization a little. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-10libata: Add a per-host flag to opt-in into parallel port probesArjan van de Ven
This patch adds a per host flag that allows drivers to opt in into having its busses scanned in parallel. Drivers that do not set this flag get their ports scanned in the "original" sequence. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-10Merge branch 'x86-fixes-for-linus' of ↵Linus Torvalds
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: (36 commits) x86: fix section mismatch warnings in mcheck/mce_amd_64.c x86: offer frame pointers in all build modes x86: remove duplicated #include's x86: k8 numa register active regions later x86: update Alan Cox's email addresses x86: rename all fields of mpc_table mpc_X to X x86: rename all fields of mpc_oemtable oem_X to X x86: rename all fields of mpc_bus mpc_X to X x86: rename all fields of mpc_cpu mpc_X to X x86: rename all fields of mpc_intsrc mpc_X to X x86: rename all fields of mpc_lintsrc mpc_X to X x86: rename all fields of mpc_iopic mpc_X to X x86: irqinit_64.c init_ISA_irqs should be static Documentation/x86/boot.txt: payload length was changed to payload_length x86: setup_percpu.c fix style problems x86: irqinit_64.c fix style problems x86: irqinit_32.c fix style problems x86: i8259.c fix style problems x86: irq_32.c fix style problems x86: ioport.c fix style problems ...
2009-01-10Merge branch 'cpus4096-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'cpus4096-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: [IA64] fix typo in cpumask_of_pcibus() x86: fix x86_32 builds for summit and es7000 arch's cpumask: use work_on_cpu in acpi-cpufreq.c for read_measured_perf_ctrs cpumask: use work_on_cpu in acpi-cpufreq.c for drv_read and drv_write cpumask: use cpumask_var_t in acpi-cpufreq.c cpumask: use work_on_cpu in acpi/cstate.c cpumask: convert struct cpufreq_policy to cpumask_var_t cpumask: replace CPUMASK_ALLOC etc with cpumask_var_t x86: cleanup remaining cpumask_t ops in smpboot code cpumask: update pci_bus_show_cpuaffinity to use new cpumask API cpumask: update local_cpus_show to use new cpumask API ia64: cpumask fix for is_affinity_mask_valid()
2009-01-10btrfs: fix for write_super_lockfs/unlockfs error handlingLinus Torvalds
Commit c4be0c1dc4cdc37b175579be1460f15ac6495e9a added the ability for write_super_lockfs to return errors, and renamed them to match. But btrfs didn't get converted. Do the minimal conversion to make it compile again. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-10rbtree: add const qualifier to some functionsArtem Bityutskiy
The 'rb_first()', 'rb_last()', 'rb_next()' and 'rb_prev()' calls take a pointer to an RB node or RB root. They do not change the pointed objects, so add a 'const' qualifier in order to make life of the users of these functions easier. Indeed, if I have my own constant pointer &const struct my_type *p, and I call 'rb_next(&p->rb)', I get a GCC warning: warning: passing argument 1 of ‘rb_next’ discards qualifiers from pointer target type Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-09LIS3LV02D: separate the core from HP ACPI APIEric Piel
The sensor can be accessed via various buses. In particular, SPI, I²C and, on HP laptops, via a specific ACPI API (the only one currently supported). Separate this latest platform from the core of the sensor driver to allow support for the other bus type. The second, and more direct goal is actually to be able to merge this part with the hp-disk-leds driver, which has the same ACPI PNP number. Signed-off-by: Pavel Machek <pavel@suse.cz> Signed-off-by: Eric Piel <eric.piel@tremplin-utc.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-09filesystem freeze: remove XFS specific ioctl interfaces for freeze featureTakashi Sato
It removes XFS specific ioctl interfaces and request codes for freeze feature. This patch has been supplied by David Chinner. Signed-off-by: Dave Chinner <dgc@sgi.com> Signed-off-by: Takashi Sato <t-sato@yk.jp.nec.com> Cc: Dave Chinner <david@fromorbit.com> Cc: <xfs-masters@oss.sgi.com> Cc: <linux-ext4@vger.kernel.org> Cc: Christoph Hellwig <hch@lst.de> Cc: Dave Kleikamp <shaggy@austin.ibm.com> Cc: Alasdair G Kergon <agk@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-09filesystem freeze: implement generic freeze featureTakashi Sato
The ioctls for the generic freeze feature are below. o Freeze the filesystem int ioctl(int fd, int FIFREEZE, arg) fd: The file descriptor of the mountpoint FIFREEZE: request code for the freeze arg: Ignored Return value: 0 if the operation succeeds. Otherwise, -1 o Unfreeze the filesystem int ioctl(int fd, int FITHAW, arg) fd: The file descriptor of the mountpoint FITHAW: request code for unfreeze arg: Ignored Return value: 0 if the operation succeeds. Otherwise, -1 Error number: If the filesystem has already been unfrozen, errno is set to EINVAL. [akpm@linux-foundation.org: fix CONFIG_BLOCK=n] Signed-off-by: Takashi Sato <t-sato@yk.jp.nec.com> Signed-off-by: Masayuki Hamaguchi <m-hamaguchi@ys.jp.nec.com> Cc: <xfs-masters@oss.sgi.com> Cc: <linux-ext4@vger.kernel.org> Cc: Christoph Hellwig <hch@lst.de> Cc: Dave Kleikamp <shaggy@austin.ibm.com> Cc: Dave Chinner <david@fromorbit.com> Cc: Alasdair G Kergon <agk@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-09filesystem freeze: add error handling of write_super_lockfs/unlockfsTakashi Sato
Currently, ext3 in mainline Linux doesn't have the freeze feature which suspends write requests. So, we cannot take a backup which keeps the filesystem's consistency with the storage device's features (snapshot and replication) while it is mounted. In many case, a commercial filesystem (e.g. VxFS) has the freeze feature and it would be used to get the consistent backup. If Linux's standard filesystem ext3 has the freeze feature, we can do it without a commercial filesystem. So I have implemented the ioctls of the freeze feature. I think we can take the consistent backup with the following steps. 1. Freeze the filesystem with the freeze ioctl. 2. Separate the replication volume or create the snapshot with the storage device's feature. 3. Unfreeze the filesystem with the unfreeze ioctl. 4. Take the backup from the separated replication volume or the snapshot. This patch: VFS: Changed the type of write_super_lockfs and unlockfs from "void" to "int" so that they can return an error. Rename write_super_lockfs and unlockfs of the super block operation freeze_fs and unfreeze_fs to avoid a confusion. ext3, ext4, xfs, gfs2, jfs: Changed the type of write_super_lockfs and unlockfs from "void" to "int" so that write_super_lockfs returns an error if needed, and unlockfs always returns 0. reiserfs: Changed the type of write_super_lockfs and unlockfs from "void" to "int" so that they always return 0 (success) to keep a current behavior. Signed-off-by: Takashi Sato <t-sato@yk.jp.nec.com> Signed-off-by: Masayuki Hamaguchi <m-hamaguchi@ys.jp.nec.com> Cc: <xfs-masters@oss.sgi.com> Cc: <linux-ext4@vger.kernel.org> Cc: Christoph Hellwig <hch@lst.de> Cc: Dave Kleikamp <shaggy@austin.ibm.com> Cc: Dave Chinner <david@fromorbit.com> Cc: Alasdair G Kergon <agk@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-09memstick: annotate endianness of attribute structsHarvey Harrison
The code was shifting the endianness appropriately everywhere, annotate the structs to avoid the sparse warnings when assigning the endian types to the struct members, or passing them to be[16|32]_to_cpu: drivers/memstick/core/mspro_block.c:331:4: warning: cast to restricted __be16 drivers/memstick/core/mspro_block.c:333:4: warning: cast to restricted __be16 drivers/memstick/core/mspro_block.c:335:4: warning: cast to restricted __be16 drivers/memstick/core/mspro_block.c:337:4: warning: cast to restricted __be16 drivers/memstick/core/mspro_block.c:341:4: warning: cast to restricted __be16 drivers/memstick/core/mspro_block.c:347:4: warning: cast to restricted __be32 drivers/memstick/core/mspro_block.c:356:4: warning: cast to restricted __be16 drivers/memstick/core/mspro_block.c:358:4: warning: cast to restricted __be16 drivers/memstick/core/mspro_block.c:364:4: warning: cast to restricted __be16 drivers/memstick/core/mspro_block.c:367:4: warning: cast to restricted __be16 drivers/memstick/core/mspro_block.c:369:4: warning: cast to restricted __be16 drivers/memstick/core/mspro_block.c:371:4: warning: cast to restricted __be16 drivers/memstick/core/mspro_block.c:377:4: warning: cast to restricted __be16 drivers/memstick/core/mspro_block.c:478:4: warning: cast to restricted __be16 drivers/memstick/core/mspro_block.c:480:4: warning: cast to restricted __be16 drivers/memstick/core/mspro_block.c:482:4: warning: cast to restricted __be16 drivers/memstick/core/mspro_block.c:484:4: warning: cast to restricted __be16 drivers/memstick/core/mspro_block.c:486:4: warning: cast to restricted __be16 drivers/memstick/core/mspro_block.c:689:22: expected unsigned int [unsigned] [assigned] data_address drivers/memstick/core/mspro_block.c:689:22: got restricted __be32 [usertype] <noident> drivers/memstick/core/mspro_block.c:697:3: warning: cast to restricted __be32 drivers/memstick/core/mspro_block.c:960:17: warning: incorrect type in initializer (different base types) drivers/memstick/core/mspro_block.c:960:17: expected unsigned short [unsigned] data_count drivers/memstick/core/mspro_block.c:960:17: got restricted __be16 [usertype] <noident> drivers/memstick/core/mspro_block.c:993:6: warning: cast to restricted __be16 drivers/memstick/core/mspro_block.c:995:28: warning: cast to restricted __be16 Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Cc: Alex Dubov <oakad@yahoo.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-09hp-wmi: handle rfkill_register() failureLarry Finger
Compilation of the HP WMI hotkeys code results in the following: CC [M] drivers/platform/x86/hp-wmi.o drivers/platform/x86/hp-wmi.c: In function hp_wmi_bios_setup: drivers/platform/x86/hp-wmi.c:431: warning: ignoring return value of rfkill_register, declared with attribute warn_unused_result drivers/platform/x86/hp-wmi.c:441: warning: ignoring return value of rfkill_register, declared with attribute warn_unused_result drivers/platform/x86/hp-wmi.c:450: warning: ignoring return value of rfkill_register, declared with attribute warn_unused_result Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Cc: Matthew Garrett <mjg59@srcf.ucam.org> Cc: Len Brown <lenb@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>