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2010-05-22Merge remote branch 'origin' into secretlab/next-devicetreeGrant Likely
Merging in current state of Linus' tree to deal with merge conflicts and build failures in vio.c after merge. Conflicts: drivers/i2c/busses/i2c-cpm.c drivers/i2c/busses/i2c-mpc.c drivers/net/gianfar.c Also fixed up one line in arch/powerpc/kernel/vio.c to use the correct node pointer. Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2010-05-22of: Remove duplicate fields from of_platform_driverGrant Likely
.name, .match_table and .owner are duplicated in both of_platform_driver and device_driver. This patch is a removes the extra copies from struct of_platform_driver and converts all users to the device_driver members. This patch is a pretty mechanical change. The usage model doesn't change and if any drivers have been missed, or if anything has been fixed up incorrectly, then it will fail with a compile time error, and the fixup will be trivial. This patch looks big and scary because it touches so many files, but it should be pretty safe. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Sean MacLennan <smaclennan@pikatech.com>
2010-05-21Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: (69 commits) fix handling of offsets in cris eeprom.c, get rid of fake on-stack files get rid of home-grown mutex in cris eeprom.c switch ecryptfs_write() to struct inode *, kill on-stack fake files switch ecryptfs_get_locked_page() to struct inode * simplify access to ecryptfs inodes in ->readpage() and friends AFS: Don't put struct file on the stack Ban ecryptfs over ecryptfs logfs: replace inode uid,gid,mode initialization with helper function ufs: replace inode uid,gid,mode initialization with helper function udf: replace inode uid,gid,mode init with helper ubifs: replace inode uid,gid,mode initialization with helper function sysv: replace inode uid,gid,mode initialization with helper function reiserfs: replace inode uid,gid,mode initialization with helper function ramfs: replace inode uid,gid,mode initialization with helper function omfs: replace inode uid,gid,mode initialization with helper function bfs: replace inode uid,gid,mode initialization with helper function ocfs2: replace inode uid,gid,mode initialization with helper function nilfs2: replace inode uid,gid,mode initialization with helper function minix: replace inode uid,gid,mode init with helper ext4: replace inode uid,gid,mode init with helper ... Trivial conflict in fs/fs-writeback.c (mark bitfields unsigned)
2010-05-21Merge branch 'virtio' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus * 'virtio' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus: (27 commits) drivers/char: Eliminate use after free virtio: console: Accept console size along with resize control message virtio: console: Store each console's size in the console structure virtio: console: Resize console port 0 on config intr only if multiport is off virtio: console: Add support for nonblocking write()s virtio: console: Rename wait_is_over() to will_read_block() virtio: console: Don't always create a port 0 if using multiport virtio: console: Use a control message to add ports virtio: console: Move code around for future patches virtio: console: Remove config work handler virtio: console: Don't call hvc_remove() on unplugging console ports virtio: console: Return -EPIPE to hvc_console if we lost the connection virtio: console: Let host know of port or device add failures virtio: console: Add a __send_control_msg() that can send messages without a valid port virtio: Revert "virtio: disable multiport console support." virtio: add_buf_gfp trans_virtio: use virtqueue_xxx wrappers virtio-rng: use virtqueue_xxx wrappers virtio_ring: remove a level of indirection virtio_net: use virtqueue_xxx wrappers ... Fix up conflicts in drivers/net/virtio_net.c due to new virtqueue_xxx wrappers changes conflicting with some other cleanups.
2010-05-21sanitize vfs_fsync calling conventionsChristoph Hellwig
Now that the last user passing a NULL file pointer is gone we can remove the redundant dentry argument and associated hacks inside vfs_fsynmc_range. The next step will be removig the dentry argument from ->fsync, but given the luck with the last round of method prototype changes I'd rather defer this until after the main merge window. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-05-21Merge branch 'master' into for-2.6.35Jens Axboe
Conflicts: fs/ext3/fsync.c Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2010-05-21drbd: Do not free p_uuid early, this is done in the exit code of the receiverPhilipp Reisner
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2010-05-21drbd: Null pointer deref fix to the large "multi bio rewrite"Philipp Reisner
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2010-05-21drbd: Fix: Do not detach, if a bio with a barrier failsPhilipp Reisner
Introduced a few days ago: commit 45bb912bd5ea4d2b3a270a93cbdf767a0e2df6f5 Author: Lars Ellenberg <lars.ellenberg@linbit.com> Date: Fri May 14 17:10:48 2010 +0200 Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2010-05-21drbd: Ensure to not trigger late-new-UUID creation multiple timesPhilipp Reisner
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2010-05-21drbd: Do not Oops when C_STANDALONE when uuid gets generatedPhilipp Reisner
Got introduces with commit 0c3f34516e8c5a1a0ba3585a7777d32bbbdf4ecb Author: Philipp Reisner <philipp.reisner@linbit.com> Date: Mon May 17 16:10:43 2010 +0200 drbd: Create new current UUID as late as possible Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2010-05-21generate "change" uevent for loop deviceDavid Zeuthen
Recent udev versions probe loop devices for filesystems meaning that the /dev/disk hierarchy may contain useful entries such as $ ls -l /dev/disk/by-label/Fedora-12-x86_64-Live lrwxrwxrwx 1 root root 11 Mar 11 13:41 /dev/disk/by-label/Fedora-12-x86_64-Live -> ../../loop0 Unfortunately, no "change" uevent is generated when the loop device is detached so the symlink persists. Additionally, no "change" uevent is guaranteed to be generated when attaching an fd or changing capacity. For example, user space could open the loop device O_RDONLY (in fact, recent util-linux-ng does this) so udev's OPTIONS+="watch" machinery may not trigger the "change" uevent. This patch ensures that the "change" uevent is generated in all of these cases. As a result, the /dev/disk hierarchy works as expected for loop devices. Signed-off-by: David Zeuthen <davidz@redhat.com> Acked-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-05-20Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (44 commits) vlynq: make whole Kconfig-menu dependant on architecture add descriptive comment for TIF_MEMDIE task flag declaration. EEPROM: max6875: Header file cleanup EEPROM: 93cx6: Header file cleanup EEPROM: Header file cleanup agp: use NULL instead of 0 when pointer is needed rtc-v3020: make bitfield unsigned PCI: make bitfield unsigned jbd2: use NULL instead of 0 when pointer is needed cciss: fix shadows sparse warning doc: inode uses a mutex instead of a semaphore. uml: i386: Avoid redefinition of NR_syscalls fix "seperate" typos in comments cocbalt_lcdfb: correct sections doc: Change urls for sparse Powerpc: wii: Fix typo in comment i2o: cleanup some exit paths Documentation/: it's -> its where appropriate UML: Fix compiler warning due to missing task_struct declaration UML: add kernel.h include to signal.c ...
2010-05-19virtio_blk: use virtqueue_xxx wrappersMichael S. Tsirkin
Switch virtio_blk to new virtqueue_xxx wrappers. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2010-05-19virtio_blk: remove multichar constant.Rusty Russell
drivers/block/virtio_blk.c:228:13: warning: multi-character character constant Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Cc: john cooper <john.cooper@redhat.com>
2010-05-19Add virtio disk identification ioctljohn cooper
Return serial string to the guest application via ioctl driver call. Note this form of interface to the guest userland was the consensus when the prior version using the ATA_IDENTIFY came under dispute. Signed-off-by: john cooper <john.cooper@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2010-05-19Add virtio disk identification supportjohn cooper
Add virtio-blk device id (s/n) support via virtio request. Signed-off-by: john cooper <john.cooper@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2010-05-18of: Always use 'struct device.of_node' to get device node pointer.Grant Likely
The following structure elements duplicate the information in 'struct device.of_node' and so are being eliminated. This patch makes all readers of these elements use device.of_node instead. (struct of_device *)->node (struct dev_archdata *)->prom_node (sparc) (struct dev_archdata *)->of_node (powerpc & microblaze) Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2010-05-18Merge branch 'core-locking-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: lockdep: Reduce stack_trace usage lockdep: No need to disable preemption in debug atomic ops lockdep: Actually _dec_ in debug_atomic_dec lockdep: Provide off case for redundant_hardirqs_on increment lockdep: Simplify debug atomic ops lockdep: Fix redundant_hardirqs_on incremented with irqs enabled lockstat: Make lockstat counting per cpu i8253: Convert i8253_lock to raw_spinlock
2010-05-18drivers/block/drbd: Use kzallocJulia Lawall
Use kzalloc rather than the combination of kmalloc and memset. The semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression x,size,flags; statement S; @@ -x = kmalloc(size,flags); +x = kzalloc(size,flags); if (x == NULL) S -memset(x, 0, size); // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: Create new current UUID as late as possiblePhilipp Reisner
The choice was to either delay creation of the new UUID until IO got thawed or to delay it until the first IO request. Both are correct, the later is more friendly to users of dual-primary setups, that actually only write on one side. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: If we detect late that IO got frozen, retry after we thawed.Philipp Reisner
If we detect late (= after grabing mdev->req_lock) that IO got frozen, we return 1 to generic_make_request(), which simply will retry to make a request for that bio. In the subsequent call of generic_make_request() into drbd_make_request_26() we sleep in inc_ap_bio(). Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: always use_bmbv, ignore settingLars Ellenberg
Now that the peer may handle multi-bio EEs, we can ignore the peer's limit, and concentrate on the limits of the local IO stack. This is safe accross drbd protocol versions, as our queue_max_sectors() will be adjusted accordingly. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: allow resync requests to be larger than max_segment_sizeLars Ellenberg
this should allow for better background resync performance. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: Allow drbd_epoch_entries to use multiple bios.Lars Ellenberg
This should allow for better performance if the lower level IO stack of the peers differs in limits exposed either via the queue, or via some merge_bvec_fn. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: reduce sizeof struct drbd_epoch_entry by 8 byte by aligning membersLars Ellenberg
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: Fixes to the new delay_probes codePhilipp Reisner
* Only send delay_probes with protocol 93 or newer * drbd_send_delay_probes() is called only from worker context, no atomic_t needed for delay_seq Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: A fixes to the new resync speed codePhilipp Reisner
* Mention P_DELAY_PROBE in the packet naming array * Do not corrupt the mdev->data.work list in case the timer goes off before delay_probe_work got handled by the worker * Do not mod_timer() twice for a single delay_probe pair Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: Proc bits of new resync speed stuffPhilipp Reisner
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: Control the actual resync rate based on the queuing delay of data packetsPhilipp Reisner
In a setup with a high bandwidth and high latency network, eventually involving deep queues in routers, it is beneficial to only fill those queues up to an limited extend with resync data. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: Actually send delay probesPhilipp Reisner
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: Four new configuration settings for resync speed controlPhilipp Reisner
To reasonably control resync speed over drbd-proxy connections, drbd has to measure the current delay of packets transmitted over the (possibly congested) data socket vs the meta-data socket. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: Sending of delay_probesPhilipp Reisner
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: Receiving of delay_probesPhilipp Reisner
Delay_probes are new packets in the DRBD protocol, which allow DRBD to know the current delay packets have on the data socket. (relative to the meta data socket) Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: Fixed bitmap in case of online-grow without resyncPhilipp Reisner
The "surplus" bits of the old (smaller) bitmap must be clean in case of online-grow without resync. Note: Reverted 67ae8b80d4a116ab3b7094eb3723506b20c06dff as well, since the lines added by this patch are redundant. The bits get set by the bm_set_surplus(b) call before that. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: Added transmission faults to the fault injection codePhilipp Reisner
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: bugfix: Make resize work, if remote's size was limiting and increased ↵Philipp Reisner
in the meantime Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: Implemented the --assume-clean option for drbdsetup resizePhilipp Reisner
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: Added some missing staticsPhilipp Reisner
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: Make sure to resync all of the new storage upon online resizePhilipp Reisner
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: Implemented flags for the resize packetPhilipp Reisner
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: Implemented the set_new_bits parameter for drbd_bm_resize()Philipp Reisner
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: made determin_dev_size's parameter an flag enumPhilipp Reisner
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: New handler: initial-split-brainAdam Gandelman
Some wish to be notified of all instances of split brain, not just those that go unresolved. The initial-split-brain handler is called to notify someone upon detection of all split brain conditions even if auto-recovery policies are configured. Signed-off-by: Adam Gandelman <adam.gandelman@linbit.com> Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: fail_requests_early: remove incorrect and unnecessary optimizationLars Ellenberg
The condition does not fit the commend (I may well be Primary, even if I lost the disk earlier and now the connection). And this is catched below anyways, where it also gets logged. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: check for corrupt or malicous sector addresses when receiving dataLars Ellenberg
Even if it should never happen if the peer does behave, we need to double check, and not even attempt access beyond end of device. It usually would be caught by lower layers, resulting in "IO error", but may also end up in the internal meta data area. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: cleanup: This code path to trigger a resync is no longer neededPhilipp Reisner
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: don't start a resync without access to up-to-date DataLars Ellenberg
In case both nodes are "inconsistent", invalidate would have started a resync anyways, without a chance to ever succeed, just filling the logs with warning messages. Simply disallow that state change, re-using the SS_NO_UP_TO_DATE_DISK return value. This also changes the corresponding error string to "Need access to UpToDate Data" -- I found the "Refusing to be Primary without at least one UpToDate disk" answer misleading in some situations anyways. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: fix potential protocol errorLars Ellenberg
Don't forget to drain the digest in case we cannot satisfy a checksum based resync or online-verify request. It would additionally cause a protocoll error, dropping the connection. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2010-05-18drbd: remove bogus ASSERTLars Ellenberg
block_id may be ID_SYNCER, as well as checksum based resync request magic, or online verify magic. Let's just drop that ASSERT. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
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