No need to warn unregister_blkdev() failure by the callers. (The previous
patch makes unregister_blkdev() print error message in error case)
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Currently, the freezer treats all tasks as freezable, except for the kernel
threads that explicitly set the PF_NOFREEZE flag for themselves. This
approach is problematic, since it requires every kernel thread to either
set PF_NOFREEZE explicitly, or call try_to_freeze(), even if it doesn't
care for the freezing of tasks at all.
It seems better to only require the kernel threads that want to or need to
be frozen to use some freezer-related code and to remove any
freezer-related code from the other (nonfreezable) kernel threads, which is
done in this patch.
The patch causes all kernel threads to be nonfreezable by default (ie. to
have PF_NOFREEZE set by default) and introduces the set_freezable()
function that should be called by the freezable kernel threads in order to
unset PF_NOFREEZE. It also makes all of the currently freezable kernel
threads call set_freezable(), so it shouldn't cause any (intentional)
change of behaviour to appear. Additionally, it updates documentation to
describe the freezing of tasks more accurately.
[akpm@linux-foundation.org: build fixes]
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Nigel Cunningham <nigel@nigel.suspend2.net>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Gautham R Shenoy <ego@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (209 commits)
[POWERPC] Create add_rtc() function to enable the RTC CMOS driver
[POWERPC] Add H_ILLAN_ATTRIBUTES hcall number
[POWERPC] xilinxfb: Parameterize xilinxfb platform device registration
[POWERPC] Oprofile support for Power 5++
[POWERPC] Enable arbitary speed tty ioctls and split input/output speed
[POWERPC] Make drivers/char/hvc_console.c:khvcd() static
[POWERPC] Remove dead code for preventing pread() and pwrite() calls
[POWERPC] Remove unnecessary #undef printk from prom.c
[POWERPC] Fix typo in Ebony default DTS
[POWERPC] Check for NULL ppc_md.init_IRQ() before calling
[POWERPC] Remove extra return statement
[POWERPC] pasemi: Don't auto-select CONFIG_EMBEDDED
[POWERPC] pasemi: Rename platform
[POWERPC] arch/powerpc/kernel/sysfs.c: Move NUMA exports
[POWERPC] Add __read_mostly support for powerpc
[POWERPC] Modify sched_clock() to make CONFIG_PRINTK_TIME more sane
[POWERPC] Create a dummy zImage if no valid platform has been selected
[POWERPC] PS3: Bootwrapper support.
[POWERPC] powermac i2c: Use mutex
[POWERPC] Schedule removal of arch/ppc
...
Fixed up conflicts manually in:
Documentation/feature-removal-schedule.txt
arch/powerpc/kernel/pci_32.c
arch/powerpc/kernel/pci_64.c
include/asm-powerpc/pci.h
and asked the powerpc people to double-check the result..
This corrects the following compile error introduced by the merge of the
new bsg layer in commit e245befce7:
caglar@zangetsu linux-2.6 $ make
CHK include/linux/version.h
CHK include/linux/utsrelease.h
CALL scripts/checksyscalls.sh
CHK include/linux/compile.h
LD drivers/block/built-in.o
CC [M] drivers/block/cciss.o
drivers/block/cciss.c: In function `cciss_ioctl':
drivers/block/cciss.c:1173: warning: passing arg 2 of `scsi_cmd_ioctl' from incompatible pointer type
drivers/block/cciss.c:1173: warning: passing arg 3 of `scsi_cmd_ioctl' makes pointer from integer without a cast
drivers/block/cciss.c:1173: warning: passing arg 4 of `scsi_cmd_ioctl' makes integer from pointer without a cast
drivers/block/cciss.c:1173: error: too few arguments to function `scsi_cmd_ioctl'
...
make[2]: *** [drivers/block/cciss.o] Hata 1
make[1]: *** [drivers/block] Hata 2
make: *** [drivers] Hata 2
Signed-off-by: S.Çağlar Onur <caglar@pardus.org.tr>
Cc: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* 'bsg' of git://git.kernel.dk/data/git/linux-2.6-block: (25 commits)
bsg: Kconfig updates
bsg: add SCSI transport-level request support
bsg: add bidi support
add a struct request pointer to the request structure
bsg: fix the deadlock on discarding done commands
bsg: fix a blocking read bug
bsg: minor bug fixes
improve bsg device allocation
bind bsg to all SCSI devices
bsg: bind bsg to request_queue instead of gendisk
bsg: add a request_queue argument to scsi_cmd_ioctl()
bsg: simplify __bsg_alloc_command failpath
bsg: add cheasy error checks for sysfs stuff
Add queue resizing support
Replace s32, u32 and u64 with __s32, __u32 and __u64 in bsg.h for userspace
bsg: silence a bogus gcc warning
bsg: style cleanup
bsg: use u32 etc instead of uint32_t
bsg: add SG_IO to SG v4
bsg: replace SG v3 with SG v4
...
* 'for-linus' of git://git.kernel.dk/data/git/linux-2.6-block:
splice: direct splicing updates ppos twice
more ACSI removal
umem: Fix match of pci_ids in umem driver
umem: Remove references to dead CONFIG_MM_MAP_MEMORY variable
remove the documentation for the legacy CDROM drivers
* 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6: (26 commits)
[SPARC64]: Fix UP build.
[SPARC64]: dr-cpu unconfigure support.
[SERIAL]: Fix console write locking in sparc drivers.
[SPARC64]: Give more accurate errors in dr_cpu_configure().
[SPARC64]: Clear cpu_{core,sibling}_map[] in smp_fill_in_sib_core_maps()
[SPARC64]: Fix leak when DR added cpu does not bootup.
[SPARC64]: Add ->set_affinity IRQ handlers.
[SPARC64]: Process dr-cpu events in a kthread instead of workqueue.
[SPARC64]: More sensible udelay implementation.
[SPARC64]: SMP build fixes.
[SPARC64]: mdesc.c needs linux/mm.h
[SPARC64]: Fix build regressions added by dr-cpu changes.
[SPARC64]: Unconditionally register vio_bus_type.
[SPARC64]: Initial LDOM cpu hotplug support.
[SPARC64]: Fix setting of variables in LDOM guest.
[SPARC64]: Fix MD property lifetime bugs.
[SPARC64]: Abstract out mdesc accesses for better MD update handling.
[SPARC64]: Use more mearningful names for IRQ registry.
[SPARC64]: Initial domain-services driver.
[SPARC64]: Export powerd facilities for external entities.
...
This patch removes some code that became dead code after the ATARI_ACSI
removal.
It also indirectly fixes the following bug introduced by
commit c2bcf3b897:
config ATARI_SLM
tristate "Atari SLM laser printer support"
- depends on ATARI && ATARI_ACSI!=n
+ depends on ATARI
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
the pci device list for umem was not using PCI_DEVICE, so the
subvendor/subdevice fields were not set to ANY, so matching
didn't work properly.
Change to use PCI_DEVICE.
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Since we have to be able to handle MD updates, having an in-tree
set of data structures representing the MD objects actually makes
things more painful.
The MD itself is easy to parse, and we can implement the existing
interfaces using direct parsing of the MD binary image.
The MD is now reference counted, so accesses have to now take the
form:
handle = mdesc_grab();
... operations on MD ...
mdesc_release(handle);
The only remaining issue are cases where code holds on to references
to MD property values. mdesc_get_property() returns a direct pointer
to the property value, most cases just pull in the information they
need and discard the pointer, but there are few that use the pointer
directly over a long lifetime. Those will be fixed up in a subsequent
changeset.
A preliminary handler for MD update events from domain services is
there, it is rudimentry but it works and handles all of the reference
counting. It does not check the generation number of the MDs,
and it does not generate a "add/delete" list for notification to
interesting parties about MD changes but that will be forthcoming.
Signed-off-by: David S. Miller <davem@davemloft.net>
bsg uses scsi_cmd_ioctl() for some SCSI/sg ioctl
commands. scsi_cmd_ioctl() gets a request queue from a gendisk
arguement. This prevents bsg being bound to SCSI devices that don't
have a gendisk (like OSD). This adds a request_queue argument to
scsi_cmd_ioctl(). The SCSI/sg ioctl commands doesn't use a gendisk so
it's safe for any SCSI devices to use scsi_cmd_ioctl().
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (166 commits)
[SCSI] ibmvscsi: convert to use the data buffer accessors
[SCSI] dc395x: convert to use the data buffer accessors
[SCSI] ncr53c8xx: convert to use the data buffer accessors
[SCSI] sym53c8xx: convert to use the data buffer accessors
[SCSI] ppa: coding police and printk levels
[SCSI] aic7xxx_old: remove redundant GFP_ATOMIC from kmalloc
[SCSI] i2o: remove redundant GFP_ATOMIC from kmalloc from device.c
[SCSI] remove the dead CYBERSTORMIII_SCSI option
[SCSI] don't build scsi_dma_{map,unmap} for !HAS_DMA
[SCSI] Clean up scsi_add_lun a bit
[SCSI] 53c700: Remove printk, which triggers because of low scsi clock on SNI RMs
[SCSI] sni_53c710: Cleanup
[SCSI] qla4xxx: Fix underrun/overrun conditions
[SCSI] megaraid_mbox: use mutex instead of semaphore
[SCSI] aacraid: add 51245, 51645 and 52245 adapters to documentation.
[SCSI] qla2xxx: update version to 8.02.00-k1.
[SCSI] qla2xxx: add support for NPIV
[SCSI] stex: use resid for xfer len information
[SCSI] Add Brownie 1200U3P to blacklist
[SCSI] scsi.c: convert to use the data buffer accessors
...
sysfs is now completely out of driver/module lifetime game. After
deletion, a sysfs node doesn't access anything outside sysfs proper,
so there's no reason to hold onto the attribute owners. Note that
often the wrong modules were accounted for as owners leading to
accessing removed modules.
This patch kills now unnecessary attribute->owner. Note that with
this change, userland holding a sysfs node does not prevent the
backing module from being unloaded.
For more info regarding lifetime rule cleanup, please read the
following message.
http://article.gmane.org/gmane.linux.kernel/510293
(tweaked by Greg to not delete the field just yet, to make it easier to
merge things properly.)
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Cornelia Huck <cornelia.huck@de.ibm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* 'splice-2.6.23' of git://git.kernel.dk/data/git/linux-2.6-block:
pipe: add documentation and comments
pipe: change the ->pin() operation to ->confirm()
Remove remnants of sendfile()
xip sendfile removal
splice: completely document external interface with kerneldoc
sendfile: remove bad_sendfile() from bad_file_ops
shmem: convert to using splice instead of sendfile()
relay: use splice_to_pipe() instead of open-coding the pipe loop
pipe: allow passing around of ops private pointer
splice: divorce the splice structure/function definitions from the pipe header
splice: relay support
sendfile: convert nfsd to splice_direct_to_actor()
sendfile: convert nfs to using splice_read()
loop: convert to using splice_direct_to_actor() instead of sendfile()
splice: add void cookie to the actor data
sendfile: kill generic_file_sendfile()
sendfile: remove .sendfile from filesystems that use generic_file_sendfile()
sys_sendfile: switch to using ->splice_read, if available
vmsplice: add vmsplice-to-user support
splice: abstract out actor data
so that the user can disable all the options in that menu at once
instead of having to disable each option separately.
Signed-off-by: Jan Engelhardt <jengelh@gmx.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Akinobu Mita
Grant Likely
Rafael J. Wysocki
Linus Torvalds
S.Çağlar Onur
Oleg Nesterov
Stephen Rothwell
Richard Knutsson
Adrian Bunk
Neil Brown
Robert P. J. Day
David S. Miller
FUJITA Tomonori
Matthias Kaehlcke
Tejun Heo
Paul Mackerras
Jan Engelhardt