- 06 Jan, 2009 40 commits
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Pekka Enberg authored
This patch removes the rather scary OS_MEMORY_ALLOC macro. Signed-off-by:
Pekka Enberg <penberg@cs.helsinki.fi> Acked-by:
Pavel Machek <pavel@suse.cz> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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Pekka Enberg authored
Use the kernel built-in true and false boolean values instead of duplicating them in the driver code. Signed-off-by:
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Pekka Enberg authored
Remove dead code from wbusb_f.h and move the WbWLanInitialize() definition to wblinux_f.h where it arguably belongs to. As the wbusb_f.h is now empty, we can remove it completely. Signed-off-by:
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Greg Kroah-Hartman authored
No need for a simple wrapper here. Cc: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Pavel Machek <pavel@suse.cz> Signed-off-by: -
Greg Kroah-Hartman authored
No need for a simple wrapper here. Cc: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Pavel Machek <pavel@suse.cz> Signed-off-by: -
Pekka Enberg authored
Fix error handling in wb35_probe() function and clean it up a bit. Signed-off-by:
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Pekka Enberg authored
Zaps another compatability layer from the driver code. Signed-off-by:
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Pekka Enberg authored
Remove the PADAPTER typedef and its strange variants. Also fix up variable names that use the type while we're at it. Signed-off-by:
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Pekka Enberg authored
This patch removes the WB35REG struct typedefs and fixes up variable names that use the type. Signed-off-by:
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Pekka Enberg authored
This patch removes the struct typedefs for reg queues. Signed-off-by:
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Pekka Enberg authored
This patch removes the struct urb pointer typedef from the driver code and fixes up variable names that use the typedef while we're at it. Signed-off-by:
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Pekka Enberg authored
The pa_stall_execution() macro doesn't do anything so remove it from driver code. Signed-off-by:
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Pekka Enberg authored
This patch removes the OS_SLEEP() wrapper and changes the call-sites to use msleep() and udelay() where appropriate. Signed-off-by:
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Pekka Enberg authored
The functions are not used anywhere so remove them. Signed-off-by:
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Pekka Enberg authored
The wb35_probe() and wb35_disconnect() functions are only used in wbusb.c so make them static and remove them from a header file. Signed-off-by:
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Harvey Harrison authored
Noticed by sparse: drivers/staging/me4000/me4000.c:1213:43: warning: dubious: !x & y drivers/staging/wlan-ng/p80211wext.c:1583:21: warning: dubious: !x & y Signed-off-by:
Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by:
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F. Duncan M. Haldane authored
The new Kconfig option to build "staging" drivers (code in drivers/staging/) is seen in all except three architectures (arm, h8300, cris), because in these cases arch/$ARCH/Kconfig does NOT source drivers/Kconfig. This patch adds the source "drivers/staging/Kconfig" to arch/$ARCH/Kconfig for these three exceptional cases. Signed-off-by:
Duncan Haldane <duncan_h@users.sourceforge.net> Signed-off-by:
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Greg Kroah-Hartman authored
v4l2_file_operations was introduced, so use it to fix up the build errors in the go7007 driver. Signed-off-by: -
Greg Kroah-Hartman authored
video_usercopy() just changed its arguments, so fix up the go7007 driver to properly build. Signed-off-by: -
git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-2.6-dmLinus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-2.6-dm: dm snapshot: extend exception store functions dm snapshot: split out exception store implementations dm snapshot: rename struct exception_store dm snapshot: separate out exception store interface dm mpath: move trigger_event to system workqueue dm: add name and uuid to sysfs dm table: rework reference counting dm: support barriers on simple devices dm request: extend target interface dm request: add caches dm ioctl: allow dm_copy_name_and_uuid to return only one field dm log: ensure log bitmap fits on log device dm log: move region_size validation dm log: avoid reinitialising io_req on every operation dm: consolidate target deregistration error handling dm raid1: fix error count dm log: fix dm_io_client leak on error paths dm snapshot: change yield to msleep dm table: drop reference at unbind
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Jonathan Brassow authored
Supply dm_add_exception as a callback to the read_metadata function. Add a status function ready for a later patch and name the functions consistently. Signed-off-by:
Jonathan Brassow <jbrassow@redhat.com> Signed-off-by:
Alasdair G Kergon <agk@redhat.com>
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Alasdair G Kergon authored
Move the existing snapshot exception store implementations out into separate files. Later patches will place these behind a new interface in preparation for alternative implementations. Signed-off-by: -
Jonathan Brassow authored
Rename struct exception_store to dm_exception_store. Signed-off-by:
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Jonathan Brassow authored
Pull structures that bridge the gap between snapshot and exception store out of dm-snap.h and put them in a new .h file - dm-exception-store.h. This file will define the API for new exception stores. Ultimately, dm-snap.h is unnecessary, since only dm-snap.c should be using it. Signed-off-by:
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Alasdair G Kergon authored
The same workqueue is used both for sending uevents and processing queued I/O. Deadlock has been reported in RHEL5 when sending a uevent was blocked waiting for the queued I/O to be processed. Use scheduled_work() for the asynchronous uevents instead. Signed-off-by: -
Milan Broz authored
Implement simple read-only sysfs entry for device-mapper block device. This patch adds a simple sysfs directory named "dm" under block device properties and implements - name attribute (string containing mapped device name) - uuid attribute (string containing UUID, or empty string if not set) The kobject is embedded in mapped_device struct, so no additional memory allocation is needed for initializing sysfs entry. During the processing of sysfs attribute we need to lock mapped device which is done by a new function dm_get_from_kobj, which returns the md associated with kobject and increases the usage count. Each 'show attribute' function is responsible for its own locking. Signed-off-by:
Milan Broz <mbroz@redhat.com> Signed-off-by:
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Mikulas Patocka authored
Rework table reference counting. The existing code uses a reference counter. When the last reference is dropped and the counter reaches zero, the table destructor is called. Table reference counters are acquired/released from upcalls from other kernel code (dm_any_congested, dm_merge_bvec, dm_unplug_all). If the reference counter reaches zero in one of the upcalls, the table destructor is called from almost random kernel code. This leads to various problems: * dm_any_congested being called under a spinlock, which calls the destructor, which calls some sleeping function. * the destructor attempting to take a lock that is already taken by the same process. * stale reference from some other kernel code keeps the table constructed, which keeps some devices open, even after successful return from "dmsetup remove". This can confuse lvm and prevent closing of underlying devices or reusing device minor numbers. The patch changes reference counting so that the table destructor can be called only at predetermined places. The table has always exactly one reference from either mapped_device->map or hash_cell->new_map. After this patch, this reference is not counted in table->holders. A pair of dm_create_table/dm_destroy_table functions is used for table creation/destruction. Temporary references from the other code increase table->holders. A pair of dm_table_get/dm_table_put functions is used to manipulate it. When the table is about to be destroyed, we wait for table->holders to reach 0. Then, we call the table destructor. We use active waiting with msleep(1), because the situation happens rarely (to one user in 5 years) and removing the device isn't performance-critical task: the user doesn't care if it takes one tick more or not. This way, the destructor is called only at specific points (dm_table_destroy function) and the above problems associated with lazy destruction can't happen. Finally remove the temporary protection added to dm_any_congested(). Signed-off-by:
Mikulas Patocka <mpatocka@redhat.com> Signed-off-by:
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Andi Kleen authored
Implement barrier support for single device DM devices This patch implements barrier support in DM for the common case of dm linear just remapping a single underlying device. In this case we can safely pass the barrier through because there can be no reordering between devices. NB. Any DM device might cease to support barriers if it gets reconfigured so code must continue to allow for a possible -EOPNOTSUPP on every barrier bio submitted. - agk Signed-off-by:Andi Kleen <ak@suse.de> Signed-off-by:
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Kiyoshi Ueda authored
This patch adds the following target interfaces for request-based dm. map_rq : for mapping a request rq_end_io : for finishing a request busy : for avoiding performance regression from bio-based dm. Target can tell dm core not to map requests now, and that may help requests in the block layer queue to be bigger by I/O merging. In bio-based dm, this behavior is done by device drivers managing the block layer queue. But in request-based dm, dm core has to do that since dm core manages the block layer queue. Signed-off-by:Kiyoshi Ueda <k-ueda@ct.jp.nec.com> Signed-off-by:
Jun'ichi Nomura <j-nomura@ce.jp.nec.com> Signed-off-by:
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Kiyoshi Ueda authored
This patch prepares some kmem_caches for request-based dm. Signed-off-by:
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Milan Broz authored
Allow NULL buffer in dm_copy_name_and_uuid if you only want to return one of the fields. (Required by a following patch that adds these fields to sysfs.) Signed-off-by:
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Milan Broz authored
Check that the log bitmap will fit within the log device. Signed-off-by:
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Milan Broz authored
Move log size validation from mirror target to log constructor. Removed PAGE_SIZE restriction we no longer think necessary. Signed-off-by:
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Takahiro Yasui authored
rw_header function updates three members of io_req data every time when I/O is processed. bi_rw and notify.fn are never modified once they get initialized, and so they can be set in advance. header_to_disk() can also be pulled out of write_header() since only one caller needs it and write_header() can be replaced by rw_header() directly. Signed-off-by:
Takahiro Yasui <tyasui@redhat.com> Signed-off-by:
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Mikulas Patocka authored
Change dm_unregister_target to return void and use BUG() for error reporting. dm_unregister_target can only fail because of programming bug in the target driver. It can't fail because of user's behavior or disk errors. This patch changes unregister_target to return void and use BUG if someone tries to unregister non-registered target or unregister target that is in use. This patch removes code duplication (testing of error codes in all dm targets) and reports bugs in just one place, in dm_unregister_target. In some target drivers, these return codes were ignored, which could lead to a situation where bugs could be missed. Signed-off-by:
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Jonathan Brassow authored
Always increase the error count when I/O on a leg of a mirror fails. The error count is used to decide whether to select an alternative mirror leg. If the target doesn't use the "handle_errors" feature, the error count is not updated and the bio can get requeued forever by the read callback. Fix it by increasing error_count before the handle_errors feature checking. Cc: stable@kernel.org Signed-off-by:
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Takahiro Yasui authored
In create_log_context function, dm_io_client_destroy function needs to be called, when memory allocation of disk_header, sync_bits and recovering_bits failed, but dm_io_client_destroy is not called. Cc: stable@kernel.org Signed-off-by:
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Mikulas Patocka authored
Change yield() to msleep(1). If the thread had realtime priority, yield() doesn't really yield, so the yielding process would loop indefinitely and cause machine lockup. Signed-off-by:
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Mikulas Patocka authored
Move one dm_table_put() so that the last reference in the thread gets dropped in __unbind(). This is required for a following patch, dm-table-rework-reference-counting.patch, which will change the logic in such a way that table destructor is called only at specific points in the code. Signed-off-by:
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git://git.o-hand.com/linux-mfdLinus Torvalds authored
* 'for-next' of git://git.o-hand.com/linux-mfd: (30 commits) mfd: Fix section mismatch in da903x mfd: move drivers/i2c/chips/menelaus.c to drivers/mfd mfd: move drivers/i2c/chips/tps65010.c to drivers/mfd mfd: dm355evm msp430 driver mfd: Add missing break from wm3850-core mfd: Add WM8351 support mfd: Support configurable numbers of DCDCs and ISINKs on WM8350 mfd: Handle missing WM8350 platform data mfd: Add WM8352 support mfd: Use irq_to_desc in twl4030 code power_supply: Add Dialog DA9030 battery charger driver mfd: Dialog DA9030 battery charger MFD driver mfd: Register WM8400 codec device mfd: Pass driver_data onto child devices mfd: Fix twl4030-core.c build error mfd: twl4030 regulator bug fixes mfd: twl4030: create some regulator devices mfd: twl4030: cleanup symbols and OMAP dependency mfd: twl4030: simplified child creation code power_supply: Add battery health reporting for WM8350 ...
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