linux/Documentation, branch v2.6.35

CRED: Fix __task_cred()'s lockdep check and banner comment

2010-07-29T22:16:18Z

Fix __task_cred()'s lockdep check by removing the following validation condition: lockdep_tasklist_lock_is_held() as commit_creds() does not take the tasklist_lock, and nor do most of the functions that call it, so this check is pointless and it can prevent detection of the RCU lock not being held if the tasklist_lock is held. Instead, add the following validation condition: task->exit_state >= 0 to permit the access if the target task is dead and therefore unable to change its own credentials. Fix __task_cred()'s comment to: (1) discard the bit that says that the caller must prevent the target task from being deleted. That shouldn't need saying. (2) Add a comment indicating the result of __task_cred() should not be passed directly to get_cred(), but rather than get_task_cred() should be used instead. Also put a note into the documentation to enforce this point there too. Signed-off-by: David Howells Acked-by: Jiri Olsa Cc: Paul E. McKenney Signed-off-by: Linus Torvalds

ACPI / Sleep: Allow the NVS saving to be skipped during suspend to RAM

2010-07-25T03:26:09Z

Commit 2a6b69765ad794389f2fc3e14a0afa1a995221c2 (ACPI: Store NVS state even when entering suspend to RAM) caused the ACPI suspend code save the NVS area during suspend and restore it during resume unconditionally, although it is known that some systems need to use acpi_sleep=s4_nonvs for hibernation to work. To allow the affected systems to avoid saving and restoring the NVS area during suspend to RAM and resume, introduce kernel command line option acpi_sleep=nonvs and make acpi_sleep=s4_nonvs work as its alias temporarily (add acpi_sleep=s4_nonvs to the feature removal file). Addresses https://bugzilla.kernel.org/show_bug.cgi?id=16396 . Signed-off-by: Rafael J. Wysocki Reported-and-tested-by: tomas m Signed-off-by: Len Brown

documentation: fix almost duplicate filenames (IO/io-mapping.txt)

2010-07-20T17:49:30Z

Having both IO-mapping.txt and io-mapping.txt in Documentation/ was confusing and/or bothersome to some people, so rename IO-mapping.txt to bus-virt-phys-mapping.txt. Also update Documentation/00-INDEX for both of these files. Signed-off-by: Randy Dunlap Cc: Kees Bakker Cc: Keith Packard

lmb: rename to memblock

2010-07-14T07:14:00Z

via following scripts FILES=$(find * -type f | grep -vE 'oprofile|[^K]config') sed -i \ -e 's/lmb/memblock/g' \ -e 's/LMB/MEMBLOCK/g' \ $FILES for N in $(find . -name lmb.[ch]); do M=$(echo $N | sed 's/lmb/memblock/g') mv $N $M done and remove some wrong change like lmbench and dlmb etc. also move memblock.c from lib/ to mm/ Suggested-by: Ingo Molnar Acked-by: "H. Peter Anvin" Acked-by: Benjamin Herrenschmidt Acked-by: Linus Torvalds Signed-off-by: Yinghai Lu Signed-off-by: Benjamin Herrenschmidt

V4L/DVB: Documentation: Add the Philips FQ1236 MK5 to video4linux/CARDLIST.tuner

2010-07-08T19:50:05Z

Signed-off-by: Andy Walls Signed-off-by: Mauro Carvalho Chehab

watchdog: docs: add an entry for imx2_wdt

2010-07-01T16:02:55Z

Add an entry for imx2_wdt in watchdog-parameters.txt Signed-off-by: Fabio Estevam Acked-by: Wolfram Sang Signed-off-by: Wim Van Sebroeck

PCI/PM: Do not use native PCIe PME by default

2010-06-18T16:36:37Z

Commit c7f486567c1d0acd2e4166c47069835b9f75e77b (PCI PM: PCIe PME root port service driver) causes the native PCIe PME signaling to be used by default, if the BIOS allows the kernel to control the standard configuration registers of PCIe root ports. However, the native PCIe PME is coupled to the native PCIe hotplug and calling pcie_pme_acpi_setup() makes some BIOSes expect that the native PCIe hotplug will be used as well. That, in turn, causes problems to appear on systems where the PCIe hotplug driver is not loaded. The usual symptom, as reported by Jaroslav Kameník and others, is that the ACPI GPE associated with PCIe hotplug keeps firing continuously causing kacpid to take substantial percentage of CPU time. To work around this issue, change the default so that the native PCIe PME signaling is only used if directly requested with the help of the pcie_pme= command line switch. Fixes https://bugzilla.kernel.org/show_bug.cgi?id=15924 , which is a listed regression from 2.6.33. Signed-off-by: Rafael J. Wysocki Reported-by: Jaroslav Kameník Tested-by: Antoni Grzymala Signed-off-by: Jesse Barnes

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6

2010-06-11T21:15:44Z

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: PCI: clear bridge resource range if BIOS assigned bad one PCI: hotplug/cpqphp, fix NULL dereference Revert "PCI: create function symlinks in /sys/bus/pci/slots/N/" PCI: change resource collision messages from KERN_ERR to KERN_INFO

Revert "PCI: create function symlinks in /sys/bus/pci/slots/N/"

2010-06-11T20:08:37Z

This reverts commit 75568f8094eb0333e9c2109b23cbc8b82d318a3c. Since they're just a convenience anyway, remove these symlinks since they're causing duplicate filename errors in the wild. Acked-by: Alex Chiang Signed-off-by: Jesse Barnes

Merge branch 'for-linus' of git://oss.sgi.com/xfs/xfs

2010-06-05T14:33:05Z

* 'for-linus' of git://oss.sgi.com/xfs/xfs: xfs: improve xfs_isilocked xfs: skip writeback from reclaim context xfs: remove done roadmap item from xfs-delayed-logging-design.txt xfs: fix race in inode cluster freeing failing to stale inodes xfs: fix access to upper inodes without inode64 xfs: fix might_sleep() warning when initialising per-ag tree fs/xfs/quota: Add missing mutex_unlock xfs: remove duplicated #include xfs: convert more trace events to DEFINE_EVENT xfs: xfs_trace.c: remove duplicated #include xfs: Check new inode size is OK before preallocating xfs: clean up xlog_align xfs: cleanup log reservation calculactions xfs: be more explicit if RT mount fails due to config xfs: replace E2BIG with EFBIG where appropriate