path: root/drivers/block
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2012-02-02Merge branch 'for-linus' of ↵Linus Torvalds
git:// * 'for-linus' of git:// rbd: fix safety of rbd_put_client() rbd: fix a memory leak in rbd_get_client() ceph: create a new session lock to avoid lock inversion ceph: fix length validation in parse_reply_info() ceph: initialize client debugfs outside of monc->mutex ceph: change "ceph.layout" xattr to be "ceph.file.layout"
2012-02-02rbd: fix safety of rbd_put_client()Alex Elder
The rbd_client structure uses a kref to arrange for cleaning up and freeing an instance when its last reference is dropped. The cleanup routine is rbd_client_release(), and one of the things it does is delete the rbd_client from rbd_client_list. It acquires node_lock to do so, but the way it is done is still not safe. The problem is that when attempting to reuse an existing rbd_client, the structure found might already be in the process of getting destroyed and cleaned up. Here's the scenario, with "CLIENT" representing an existing rbd_client that's involved in the race: Thread on CPU A | Thread on CPU B --------------- | --------------- rbd_put_client(CLIENT) | rbd_get_client() kref_put() | (acquires node_lock) kref->refcount becomes 0 | __rbd_client_find() returns CLIENT calls rbd_client_release() | kref_get(&CLIENT->kref); | (releases node_lock) (acquires node_lock) | deletes CLIENT from list | ...and starts using CLIENT... (releases node_lock) | and frees CLIENT | <-- but CLIENT gets freed here Fix this by having rbd_put_client() acquire node_lock. The result could still be improved, but at least it avoids this problem. Signed-off-by: Alex Elder <> Signed-off-by: Sage Weil <>
2012-02-02rbd: fix a memory leak in rbd_get_client()Alex Elder
If an existing rbd client is found to be suitable for use in rbd_get_client(), the rbd_options structure is not being freed as it should. Fix that. Signed-off-by: Alex Elder <> Signed-off-by: Sage Weil <>
2012-01-18nvme: fix merge error due to change of 'make_request_fn' fn typeLinus Torvalds
The type of 'make_request_fn' changed in 5a7bbad27a4 ("block: remove support for bio remapping from ->make_request"), but the merge of the nvme driver didn't take that into account, and as a result the driver would compile with a warning: drivers/block/nvme.c: In function 'nvme_alloc_ns': drivers/block/nvme.c:1336:2: warning: passing argument 2 of 'blk_queue_make_request' from incompatible pointer type [enabled by default] include/linux/blkdev.h:830:13: note: expected 'void (*)(struct request_queue *, struct bio *)' but argument is of type 'int (*)(struct request_queue *, struct bio *)' It's benign, but the warning is annoying. Reported-by: Stephen Rothwell <> Cc: Matthew Wilcox <> Signed-off-by: Linus Torvalds <>
2012-01-18Merge git:// Torvalds
* git:// (105 commits) NVMe: Set number of queues correctly NVMe: Version 0.8 NVMe: Set queue flags correctly NVMe: Simplify nvme_unmap_user_pages NVMe: Mark the end of the sg list NVMe: Fix DMA mapping for admin commands NVMe: Rename IO_TIMEOUT to NVME_IO_TIMEOUT NVMe: Merge the nvme_bio and nvme_prp data structures NVMe: Change nvme_completion_fn to take a dev NVMe: Change get_nvmeq to take a dev instead of a namespace NVMe: Simplify completion handling NVMe: Update Identify Controller data structure NVMe: Implement doorbell stride capability NVMe: Version 0.7 NVMe: Don't probe namespace 0 Fix calculation of number of pages in a PRP List NVMe: Create nvme_identify and nvme_get_features functions NVMe: Fix memory leak in nvme_dev_add() NVMe: Fix calls to dma_unmap_sg NVMe: Correct sg list setup in nvme_map_user_pages ...
2012-01-15Merge branch 'for-3.3/drivers' of git:// Torvalds
* 'for-3.3/drivers' of git:// mtip32xx: do rebuild monitoring asynchronously xen-blkfront: Use kcalloc instead of kzalloc to allocate array mtip32xx: uninitialized variable in mtip_quiesce_io() mtip32xx: updates based on feedback xen-blkback: convert hole punching to discard request on loop devices xen/blkback: Move processing of BLKIF_OP_DISCARD from dispatch_rw_block_io xen/blk[front|back]: Enhance discard support with secure erasing support. xen/blk[front|back]: Squash blkif_request_rw and blkif_request_discard together mtip32xx: update to new ->make_request() API mtip32xx: add module.h include to avoid conflict with moduleh tree mtip32xx: mark a few more items static mtip32xx: ensure that all local functions are static mtip32xx: cleanup compat ioctl handling mtip32xx: fix warnings/errors on 32-bit compiles block: Add driver for Micron RealSSD pcie flash cards
2012-01-15Merge branch 'for-3.3/core' of git:// Torvalds
* 'for-3.3/core' of git:// (37 commits) Revert "block: recursive merge requests" block: Stop using macro stubs for the bio data integrity calls blockdev: convert some macros to static inlines fs: remove unneeded plug in mpage_readpages() block: Add BLKROTATIONAL ioctl block: Introduce blk_set_stacking_limits function block: remove WARN_ON_ONCE() in exit_io_context() block: an exiting task should be allowed to create io_context block: ioc_cgroup_changed() needs to be exported block: recursive merge requests block, cfq: fix empty queue crash caused by request merge block, cfq: move icq creation and rq->elv.icq association to block core block, cfq: restructure io_cq creation path for io_context interface cleanup block, cfq: move io_cq exit/release to blk-ioc.c block, cfq: move icq cache management to block core block, cfq: move io_cq lookup to blk-ioc.c block, cfq: move cfqd->icq_list to request_queue and add request->elv.icq block, cfq: reorganize cfq_io_context into generic and cfq specific parts block: remove elevator_queue->ops block: reorder elevator switch sequence ... Fix up conflicts in: - block/blk-cgroup.c Switch from can_attach_task to can_attach - block/cfq-iosched.c conflict with now removed cic index changes (we now use q->id instead)
2012-01-15Merge branch 'for-3.3/mtip32xx' into for-3.3/driversJens Axboe
2012-01-14block: add and use scsi_blk_cmd_ioctlPaolo Bonzini
Introduce a wrapper around scsi_cmd_ioctl that takes a block device. The function will then be enhanced to detect partition block devices and, in that case, subject the ioctls to whitelisting. Cc: Cc: Jens Axboe <> Cc: James Bottomley <> Signed-off-by: Paolo Bonzini <> Signed-off-by: Linus Torvalds <>
2012-01-14Merge tag 'for-linus' of git:// Torvalds
Autogenerated GPG tag for Rusty D1ADB8F1: 15EE 8D6C AB0E 7F0C F999 BFCB D920 0E6C D1AD B8F1 * tag 'for-linus' of git:// module_param: check that bool parameters really are bool. intelfbdrv.c: bailearly is an int module_param paride/pcd: fix bool verbose module parameter. module_param: make bool parameters really bool (drivers & misc) module_param: make bool parameters really bool (arch) module_param: make bool parameters really bool (core code) kernel/async: remove redundant declaration. printk: fix unnecessary module_param_name. lirc_parallel: fix module parameter description. module_param: avoid bool abuse, add bint for special cases. module_param: check type correctness for module_param_array modpost: use linker section to generate table. modpost: use a table rather than a giant if/else statement. modules: sysfs - export: taint, coresize, initsize kernel/params: replace DEBUGP with pr_debug module: replace DEBUGP with pr_debug module: struct module_ref should contains long fields module: Fix performance regression on modules with large symbol tables module: Add comments describing how the "strmap" logic works Fix up conflicts in scripts/mod/file2alias.c due to the new linker- generated table approach to adding __mod_*_device_table entries. The ARM sa11x0 mcp bus needed to be converted to that too.
2012-01-13Merge branch 'for-linus' of ↵Linus Torvalds
git:// * 'for-linus' of git:// ceph: ensure prealloc_blob is in place when removing xattr rbd: initialize snap_rwsem in rbd_add() ceph: enable/disable dentry complete flags via mount option vfs: export symbol d_find_any_alias() ceph: always initialize the dentry in open_root_dentry() libceph: remove useless return value for osd_client __send_request() ceph: avoid iput() while holding spinlock in ceph_dir_fsync ceph: avoid useless dget/dput in encode_fh ceph: dereference pointer after checking for NULL crush: fix force for non-root TAKE ceph: remove unnecessary d_fsdata conditional checks ceph: Use kmemdup rather than duplicating its implementation Fix up conflicts in fs/ceph/super.c (d_alloc_root() failure handling vs always initialize the dentry in open_root_dentry)
2012-01-13paride/pcd: fix bool verbose module parameter.Rusty Russell
Dan Carpenter points out that it's an int, not a bool: pcd.c:427: if (verbose > 1) pcd.c:433: if (verbose > 1) pcd.c:437: if (verbose < 2) pcd.c:506:#define DBMSG(msg) ((verbose>1)?(msg):NULL) Signed-off-by: Rusty Russell <> Cc: Dan Carpenter <>
2012-01-13module_param: make bool parameters really bool (drivers & misc)Rusty Russell
module_param(bool) used to counter-intuitively take an int. In fddd5201 (mid-2009) we allowed bool or int/unsigned int using a messy trick. It's time to remove the int/unsigned int option. For this version it'll simply give a warning, but it'll break next kernel version. Acked-by: Mauro Carvalho Chehab <> Signed-off-by: Rusty Russell <>
2012-01-12rbd: initialize snap_rwsem in rbd_add()Alex Elder
New rbd device structures get initialized in rbd_add(). Many of the fields rely on being initially zero-filled. However we lockdep was noticing that the rw_semaphore embedded in the header field was not getting properly initialized. Fix that. Signed-off-by: Alex Elder <> Signed-off-by: Sage Weil <>
2012-01-12virtio: blk: Add freeze, restore handlers to support S4Amit Shah
Delete the vq and flush any pending requests from the block queue on the freeze callback to prepare for hibernation. Re-create the vq in the restore callback to resume normal function. Signed-off-by: Amit Shah <> Signed-off-by: Rusty Russell <>
2012-01-12virtio: blk: Move vq initialization to separate functionAmit Shah
The probe and PM restore functions will share this code. Signed-off-by: Amit Shah <> Signed-off-by: Rusty Russell <>
2012-01-12virtio_blk: fix config handler raceMichael S. Tsirkin
Fix a theoretical race related to config work handler: a config interrupt might happen after we flush config work but before we reset the device. It will then cause the config work to run during or after reset. Two problems with this: - if this runs after device is gone we will get use after free - access of config while reset is in progress is racy (as layout is changing). As a solution 1. flush after reset when we know there will be no more interrupts 2. add a flag to disable config access before reset Signed-off-by: Michael S. Tsirkin <> Signed-off-by: Rusty Russell <>
2012-01-12virtio: rename virtqueue_add_buf_gfp to virtqueue_add_bufRusty Russell
Remove wrapper functions. This makes the allocation type explicit in all callers; I used GPF_KERNEL where it seemed obvious, left it at GFP_ATOMIC otherwise. Signed-off-by: Rusty Russell <> Reviewed-by: Christoph Hellwig <>
2012-01-11NVMe: Set number of queues correctlyMatthew Wilcox
The number of submission & completion queues should be set by calling Set Features, not Get Features. Reported-by: Kwok Kong <> Signed-off-by: Matthew Wilcox <>
2012-01-10Merge branch 'next' of git:// Torvalds
* 'next' of git:// microblaze: Wire-up new system calls microblaze: Remove NO_IRQ from architecture input: xilinx_ps2: Don't use NO_IRQ block: xsysace: Don't use NO_IRQ microblaze: Trivial asm fix microblaze: Fix debug message in module microblaze: Remove eprintk macro microblaze: Send CR before LF for early console microblaze: Change NO_IRQ to 0 microblaze: Use irq_of_parse_and_map for timer microblaze: intc: Change variable name microblaze: Use of_find_compatible_node for timer and intc microblaze: Add __cmpdi2 microblaze: Synchronize __pa __va macros
2012-01-10NVMe: Version 0.8Matthew Wilcox
Signed-off-by: Matthew Wilcox <>
2012-01-10NVMe: Set queue flags correctlyMatthew Wilcox
QUEUE_FLAG_* are flags (other than QUEUE_FLAG_DEFAULT), so they cannot be ORed together. Set the queue flags using queue_flag_set_unlocked(). Reported-by: Donald Wood <> Signed-off-by: Matthew Wilcox <>
2012-01-10NVMe: Simplify nvme_unmap_user_pagesMatthew Wilcox
By using the iod->nents field (the same way other I/O paths do), we can avoid recalculating the number of sg entries at unmap time, and make nvme_unmap_user_pages() easier to call. Also, use the 'write' parameter instead of assuming DMA_FROM_DEVICE. Signed-off-by: Matthew Wilcox <>
2012-01-10NVMe: Mark the end of the sg listMatthew Wilcox
For user I/O and admin commands, we were forgetting to mark the end of the SG list. Signed-off-by: Matthew Wilcox <>
2012-01-10NVMe: Fix DMA mapping for admin commandsMatthew Wilcox
We were always mapping as DMA_FROM_DEVICE then unmapping with DMA_TO_DEVICE which was clearly not correct. Follow the same pattern as nvme_submit_io() and key off the bottom bit of the opcode to determine whether this is a read or a write. Signed-off-by: Matthew Wilcox <>
2012-01-10NVMe: Rename IO_TIMEOUT to NVME_IO_TIMEOUTMatthew Wilcox
IO_TIMEOUT is a little too generic and might be used by other parts of the kernel in the future. Signed-off-by: Matthew Wilcox <>
2012-01-10NVMe: Merge the nvme_bio and nvme_prp data structuresMatthew Wilcox
The new merged data structure is called nvme_iod. This improves performance for mid-sized I/Os (in the 16k range) since we save a memory allocation. It is also a slightly simpler interface to use. Signed-off-by: Matthew Wilcox <>
2012-01-10NVMe: Change nvme_completion_fn to take a devMatthew Wilcox
The queue is only needed for some rare occasions, and it's more consistent to pass the device around. Signed-off-by: Matthew Wilcox <>
2012-01-10NVMe: Change get_nvmeq to take a dev instead of a namespaceMatthew Wilcox
Upcoming patches require calling get_nvmeq when we don't have a namespace. Some callers already have the device in a local variable anyway. Signed-off-by: Matthew Wilcox <>
2012-01-10NVMe: Simplify completion handlingMatthew Wilcox
Instead of encoding the handler type in the bottom two bits of the per-completion context pointer, store the handler function as well as the context pointer. This gives us more flexibility and the code is clearer. It comes at the cost of an extra 8k of memory per queue, but this feels like a reasonable price to pay. Signed-off-by: Matthew Wilcox <>
2012-01-10Merge branch 'stable/for-linus-3.3' of ↵Linus Torvalds
git:// * 'stable/for-linus-3.3' of git:// (37 commits) xen/pciback: Expand the warning message to include domain id. xen/pciback: Fix "device has been assigned to X domain!" warning xen/pciback: Move the PCI_DEV_FLAGS_ASSIGNED ops to the "[un|]bind" xen/xenbus: don't reimplement kvasprintf via a fixed size buffer xenbus: maximum buffer size is XENSTORE_PAYLOAD_MAX xen/xenbus: Reject replies with payload > XENSTORE_PAYLOAD_MAX. Xen: consolidate and simplify struct xenbus_driver instantiation xen-gntalloc: introduce missing kfree xen/xenbus: Fix compile error - missing header for xen_initial_domain() xen/netback: Enable netback on HVM guests xen/grant-table: Support mappings required by blkback xenbus: Use grant-table wrapper functions xenbus: Support HVM backends xen/xenbus-frontend: Fix compile error with randconfig xen/xenbus-frontend: Make error message more clear xen/privcmd: Remove unused support for arch specific privcmp mmap xen: Add xenbus_backend device xen: Add xenbus device driver xen: Add privcmd device driver xen/gntalloc: fix reference counts on multi-page mappings ...
2012-01-08Merge branch 'for-linus' of ↵Linus Torvalds
git:// * 'for-linus' of git:// (53 commits) Kconfig: acpi: Fix typo in comment. misc latin1 to utf8 conversions devres: Fix a typo in devm_kfree comment btrfs: free-space-cache.c: remove extra semicolon. fat: Spelling s/obsolate/obsolete/g SCSI, pmcraid: Fix spelling error in a pmcraid_err() call tools/power turbostat: update fields in manpage mac80211: drop spelling fix types.h: fix comment spelling for 'architectures' typo fixes: aera -> area, exntension -> extension devices.txt: Fix typo of 'VMware'. sis900: Fix enum typo 'sis900_rx_bufer_status' decompress_bunzip2: remove invalid vi modeline treewide: Fix comment and string typo 'bufer' hyper-v: Update MAINTAINERS treewide: Fix typos in various parts of the kernel, and fix some comments. clockevents: drop unknown Kconfig symbol GENERIC_CLOCKEVENTS_MIGR gpio: Kconfig: drop unknown symbol 'CS5535_GPIO' leds: Kconfig: Fix typo 'D2NET_V2' sound: Kconfig: drop unknown symbol ARCH_CLPS7500 ... Fix up trivial conflicts in arch/powerpc/platforms/40x/Kconfig (some new kconfig additions, close to removed commented-out old ones)
2012-01-08Merge branch 'for-linus2' of ↵Linus Torvalds
git:// * 'for-linus2' of git:// (165 commits) reiserfs: Properly display mount options in /proc/mounts vfs: prevent remount read-only if pending removes vfs: count unlinked inodes vfs: protect remounting superblock read-only vfs: keep list of mounts for each superblock vfs: switch ->show_options() to struct dentry * vfs: switch ->show_path() to struct dentry * vfs: switch ->show_devname() to struct dentry * vfs: switch ->show_stats to struct dentry * switch security_path_chmod() to struct path * vfs: prefer ->dentry->d_sb to ->mnt->mnt_sb vfs: trim includes a bit switch mnt_namespace ->root to struct mount vfs: take /proc/*/mounts and friends to fs/proc_namespace.c vfs: opencode mntget() mnt_set_mountpoint() vfs: spread struct mount - remaining argument of next_mnt() vfs: move fsnotify junk to struct mount vfs: move mnt_devname vfs: move mnt_list to struct mount vfs: switch pnode.h macros to struct mount * ...
2012-01-06Merge branches 'vfsmount-guts', 'umode_t' and 'partitions' into ZAl Viro
2012-01-06Merge branch 'for-linus' of ↵Linus Torvalds
git:// * 'for-linus' of git:// (21 commits) m68k/mac: Make CONFIG_HEARTBEAT unavailable on Mac m68k/serial: Remove references to obsolete serial config options m68k/net: Remove obsolete IRQ_FLG_* users m68k: Don't comment out syscalls used by glibc m68k/atari: Move declaration of atari_SCC_reset_done to header file m68k/serial: Remove references to obsolete CONFIG_SERIAL167 m68k/hp300: Export hp300_ledstate m68k: Initconst section fixes m68k/mac: cleanup macro case mac_scsi: fix mac_scsi on some powerbooks m68k/mac: fix powerbook 150 adb_type m68k/mac: fix baboon irq disable and shutdown m68k/mac: oss irq fixes m68k/mac: fix nubus slot irq disable and shutdown m68k/mac: enable via_alt_mapping on performa 580 m68k/mac: cleanup forward declarations m68k/mac: cleanup mac_irq_pending m68k/mac: cleanup mac_clear_irq m68k/mac: early console m68k/mvme16x: Add support for EARLY_PRINTK ... Fix up trivial conflict in arch/m68k/Kconfig.debug due to new EARLY_PRINTK config option addition clashing with movement of the BOOTPARAM options.
2012-01-05block: xsysace: Don't use NO_IRQMichal Simek
Drivers shouldn't use NO_IRQ. Microblaze and PPC define NO_IRQ as 0 and this reference will be removed in near future. Signed-off-by: Michal Simek <> Reviewed-by: Ryan Mallon <> Acked-by: Grant Likely <> CC: Rob Herring <>
2012-01-04Xen: consolidate and simplify struct xenbus_driver instantiationJan Beulich
The 'name', 'owner', and 'mod_name' members are redundant with the identically named fields in the 'driver' sub-structure. Rather than switching each instance to specify these fields explicitly, introduce a macro to simplify this. Eliminate further redundancy by allowing the drvname argument to DEFINE_XENBUS_DRIVER() to be blank (in which case the first entry from the ID table will be used for Also eliminate the questionable xenbus_register_{back,front}end() wrappers - their sole remaining purpose was the checking of the 'owner' field, proper setting of which shouldn't be an issue anymore when the macro gets used. v2: Restore DRV_NAME for the driver name in xen-pciback. Signed-off-by: Jan Beulich <> Cc: Jens Axboe <> Cc: Dmitry Torokhov <> Cc: Florian Tobias Schandinat <> Cc: Ian Campbell <> Cc: David S. Miller <> Signed-off-by: Konrad Rzeszutek Wilk <>
2012-01-04mtip32xx: do rebuild monitoring asynchronouslyAsai Thambi S P
Earlier, rebuild monitoring was done in the context of probe. Now the service thread takes the responsibility of rebuild monitoring, and probe returns good status. Signed-off-by: Asai Thambi S P <> Signed-off-by: Sam Bradshaw <> Signed-off-by: Jens Axboe <>
2012-01-03switch device_get_devnode() and ->devnode() to umode_t *Al Viro
both callers of device_get_devnode() are only interested in lower 16bits and nobody tries to return anything wider than 16bit anyway. Signed-off-by: Al Viro <>
2012-01-03fs: move code out of buffer.cAl Viro
Move invalidate_bdev, block_sync_page into fs/block_dev.c. Export kill_bdev as well, so brd doesn't have to open code it. Reduce buffer_head.h requirement accordingly. Removed a rather large comment from invalidate_bdev, as it looked a bit obsolete to bother moving. The small comment replacing it says enough. Signed-off-by: Nick Piggin <> Cc: Al Viro <> Cc: Christoph Hellwig <> Signed-off-by: Andrew Morton <> Signed-off-by: Al Viro <>
2011-12-25Merge branch 'stable/for-jens-3.3' of ↵Jens Axboe
git:// into for-3.3/drivers
2011-12-16Merge branch 'for-linus' of git:// Torvalds
* 'for-linus' of git:// block: don't kick empty queue in blk_drain_queue() block/swim3: Locking fixes loop: Fix discard_alignment default setting cfq-iosched: fix cfq_cic_link() race confition cfq-iosched: free cic_index if blkio_alloc_blkg_stats fails cciss: fix flush cache transfer length cciss: Add IRQF_SHARED back in for the non-MSI(X) interrupt handler loop: fix loop block driver discard and encryption comment block: initialize request_queue's numa node during
2011-12-16xen-blkfront: Use kcalloc instead of kzalloc to allocate arrayThomas Meyer
The advantage of kcalloc is, that will prevent integer overflows which could result from the multiplication of number of elements and size and it is also a bit nicer to read. The semantic patch that makes this change is available in Signed-off-by: Thomas Meyer <> [v1: Seperated the drivers/block/cciss_scsi.c out of this patch] Signed-off-by: Konrad Rzeszutek Wilk <>
2011-12-14block, sx8: kill blk_insert_request()Tejun Heo
The only user left for blk_insert_request() is sx8 and it can be trivially switched to use blk_execute_rq_nowait() - special requests aren't included in io stat and sx8 doesn't use block layer tagging. Switch sx8 and kill blk_insert_requeset(). This patch doesn't introduce any functional difference. Only compile tested. Signed-off-by: Tejun Heo <> Acked-by: Jeff Garzik <> Signed-off-by: Jens Axboe <>
2011-12-13Merge branch 'for-linus' of ↵Linus Torvalds
git:// * 'for-linus' of git:// ceph: add missing spin_unlock at ceph_mdsc_build_path() ceph: fix SEEK_CUR, SEEK_SET regression crush: fix mapping calculation when force argument doesn't exist ceph: use i_ceph_lock instead of i_lock rbd: remove buggy rollback functionality rbd: return an error when an invalid header is read ceph: fix rasize reporting by ceph_show_options
2011-12-12block/swim3: Locking fixesBenjamin Herrenschmidt
The old PowerMac swim3 driver has some "interesting" locking issues, using a private lock and failing to lock the queue before completing requests, which triggered WARN_ONs among others. This rips out the private lock, makes everything operate under the block queue lock, and generally makes things simpler. We used to also share a queue between the two possible instances which was problematic since we might pick the wrong controller in some cases, so make the queue and the current request per-instance and use queuedata to point to our private data which is a lot cleaner. We still share the queue lock but then, it's nearly impossible to actually use 2 swim3's simultaneously: one would need to have a Wallstreet PowerBook, the only machine afaik with two of these on the motherboard, and populate both hotswap bays with a floppy drive (the machine ships only with one), so nobody cares... While at it, add a little fix to clear up stale interrupts when loading the driver or plugging a floppy drive in a bay. Signed-off-by: Benjamin Herrenschmidt <> Signed-off-by: Jens Axboe <>
2011-12-10m68k/mac: cleanup forward declarationsFinn Thain
Move some forward declarations into header files and adjust includes. Signed-off-by: Finn Thain <> Signed-off-by: Geert Uytterhoeven <>
2011-12-07rbd: remove buggy rollback functionalityJosh Durgin
This doesn't interact with resizing well, since it doesn't set the size of the device to the size at the snapshot. It's also an expensive operation to be synchronous. Rollback can still be done with the userspace rbd tool. Signed-off-by: Josh Durgin <>
2011-12-07rbd: return an error when an invalid header is readJosh Durgin
This protects against opening future rbd images that have incompatible format changes. Signed-off-by: Josh Durgin <>
2011-12-02treewide: Fix typos in various parts of the kernel, and fix some comments.Justin P. Mattock
The below patch fixes some typos in various parts of the kernel, as well as fixes some comments. Please let me know if I missed anything, and I will try to get it changed and resent. Signed-off-by: Justin P. Mattock <> Acked-by: Randy Dunlap <> Signed-off-by: Jiri Kosina <>