- 13 May, 2008 30 commits
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Serge E. Hallyn authored
There is currently no way to query the bounding set of another task. As there appears to be no security reason not to, and as Michael Kerrisk points out the following valid reasons to do so exist: * consistency (I can see all of the other per-thread/process sets in /proc/.../status) * debugging -- I could imagine that it would make the job of debugging an application that uses capabilities a little simpler. this patch adds the bounding set to /proc/self/status right after the effective set. Signed-off-by:
Serge E. Hallyn <serue@us.ibm.com> Acked-by:
Michael Kerrisk <mtk.manpages@gmail.com> Acked-by:
Andrew G. Morgan <morgan@kernel.org> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Dan Williams authored
commit bd2ab670 "md: close a livelock window in handle_parity_checks5" introduced a bug in handling 'repair' operations. After a repair operation completes we clear the state bits tracking this operation. However, they are cleared too early and this results in the code deciding to re-run the parity check operation. Since we have done the repair in memory the second check does not find a mismatch and thus does not do a writeback. Test results: $ echo repair > /sys/block/md0/md/sync_action $ cat /sys/block/md0/md/mismatch_cnt 51072 $ echo repair > /sys/block/md0/md/sync_action $ cat /sys/block/md0/md/mismatch_cnt 0 (also fix incorrect indentation) Cc: <stable@kernel.org> Tested-by:
George Spelvin <linux@horizon.com> Acked-by:
NeilBrown <neilb@suse.de> Signed-off-by:
Dan Williams <dan.j.williams@intel.com> Signed-off-by:
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Krzysztof Helt authored
Improve clock calculation precision (to kHz from MHz) and removes parameter field vclk from the tridentfb_par structure. Signed-off-by:
Krzysztof Helt <krzysztof.h1@wp.pl> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by:
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Krzysztof Helt authored
Remove redundant enable_mmio() call as the mmio mode is enabled in the probe function earlier. Signed-off-by:
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Harvey Harrison authored
Otherwise it can only take the values 0/-1 which doesn't seem to have been intended. drivers/mmc/host/sdhci.h:190:20: error: dubious one-bit signed bitfield Signed-off-by:
Harvey Harrison <harvey.harrison@gmail.com> Acked-by:
Pierre Ossman <drzeus-list@drzeus.cx> Signed-off-by:
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Jan Kara authored
Sometimes, vfs_quota_off() is called on a partially set up super block (for example when fill_super() fails for some reason). In such cases we cannot call ->sync_fs() because it can Oops because of not properly filled in super block. So in case we find there's not quota to turn off, we just skip everything and return which fixes the above problem. [akpm@linux-foundation.org: fxi tpyo] Signed-off-by:
Jan Kara <jack@suse.cz> Signed-off-by:
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Christoph Hellwig authored
Signed-off-by:
Christoph Hellwig <hch@lst.de> Acked-by:
Evgeniy Dushistov <dushistov@mail.ru> Signed-off-by:
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KOSAKI Motohiro authored
When accessing cpu_online_map, we should prevent dynamic changing of cpu_online_map by get_online_cpus(). Unfortunately, all_vm_events() doesn't do that. Signed-off-by:
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Acked-by:
Christoph Lameter <clameter@sgi.com> Cc: Gautham R Shenoy <ego@in.ibm.com> Signed-off-by:
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Sebastian Siewior authored
As the subject says this patch adds the support for kernel preemption on m68knommu Coldfire. I thing the same changes could be applied to 68360 & 68328 but since I don't have the HW, I don't touch it. Kconfig enables the preemption item only on coldfire. This is a missing chunk from Sebastian's original patch that I lost from the first submission. Signed-off-by:
Sebastian Siewior <bigeasy@linutronix.de> Signed-off-by:
Greg Ungerer <gerg@uclinux.org> Signed-off-by:
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Miklos Szeredi authored
dget(dentry->d_parent) --> dget_parent(dentry) unlock_parent() is racy and unnecessary. Replace single caller with unlock_dir(). There are several other suspect uses of ->d_parent in ecryptfs... Signed-off-by:
Miklos Szeredi <mszeredi@suse.cz> Cc: Michael Halcrow <mhalcrow@us.ibm.com> Cc: Christoph Hellwig <hch@infradead.org> Signed-off-by:
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Dean Nelson authored
In preparation for supporting greater than 64 partitions replace partid_t by short in drivers/misc/sgi-xp. Signed-off-by:
Dean Nelson <dcn@sgi.com> Acked-by:
Robin Holt <holt@sgi.com> Signed-off-by:
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Dean Nelson authored
Make XP return values more generic to XP and not so tied to XPC by changing enum xpc_retval to xp_retval, along with changing return value prefixes from xpc to xp. Also, cleanup a comment block that referenced some of these return values as well as the handling of BTE related return values. Signed-off-by:
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Eric BENARD authored
There is a typo in pxa2xx_spi.c, comment says "Enable the SSP clock", code says: clk_disable ... so after resume, the SSP is dead. Signed-off-by:
David Brownell <dbrownell@users.sourceforge.net> Cc: Ned Forrester <nforrester@whoi.edu> Cc: Stephen Street <stephen@streetfiresound.com> Signed-off-by:
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Jeff Dike authored
Alarm delivery could be noticably late in the !CONFIG_NOHZ case because lost ticks weren't being taken into account. This is now treated more carefully, with the time between ticks being calculated and the appropriate number of ticks delivered to the timekeeping system. Cc: Nix <nix@esperi.org.uk> Signed-off-by:
Jeff Dike <jdike@linux.intel.com> Signed-off-by:
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Jeff Dike authored
Give random.c a style workover while I'm changing it. Signed-off-by:
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Jeff Dike authored
The random driver would essentially hang if the host's /dev/random returned -EAGAIN. There was a test of need_resched followed by a schedule inside the loop, but that didn't help and it's the wrong way to work anyway. The right way is to ask for an interrupt when there is input available from the host and handle it then rather than polling. Now, when the host's /dev/random returns -EAGAIN, the driver asks for a wakeup when there's randomness available again and sleeps. The interrupt routine just wakes up whatever processes are sleeping on host_read_wait. There is an atomic_t, host_sleep_count, which counts the number of processes waiting for randomness. When this reaches zero, the interrupt is disabled. An added complication is that async I/O notification was only recently added to /dev/random (by me), so essentially all hosts will lack it. So, we use the sigio workaround here, which is to have a separate thread poll on the descriptor and send an interrupt when there is input on it. This mechanism is activated when a process gets -EAGAIN (activating this multiple times is harmless, if a bit wasteful) and deactivated by the last process still waiting. The module name was changed from "random" to "hw_random" in order for udev to recognize it. The sigio workaround needed some changes. sigio_broken was added for cases when we know that async notification doesn't work. This is now called from maybe_sigio_broken, which deals with pts devices. Signed-off-by:
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Jeff Dike authored
The top of physical memory should be below the initial process stack, not the top of the address space, at least for as long as the stack isn't known to the kernel VM system and appropriately reserved. Cc: "Christopher S. Aker" <caker@theshore.net> Signed-off-by:
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Cyrill Gorcunov authored
This patch includes page.h header into linker scripts that allow us to use PAGE_SIZE macro instead of numeric constant. To be able to include page.h into linker scripts page.h is needed for some modification - i.e. we need to use __ASSEMBLY__ and _AC macro [jdike@linux.intel.com - fixed conflict with as-layout.h] Signed-off-by:
Cyrill Gorcunov <gorcunov@gmail.com> Signed-off-by:
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Jiri Olsa authored
I just saw similar patches in the janitor kernel's list, and spotted place it fits. Signed-off-by:
Jiri Olsa <olsajiri@gmail.com> Signed-off-by:
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Robert P. J. Day authored
Add the BLOCK dependency for RAW_DRIVER, to match what's in drivers/char/Kconfig. Also, while we're there, update the alleged obsolesence of RAW_DRIVER since it doesn't seem to be going away any time soon. Signed-off-by:
Robert P. J. Day <rpjday@crashcourse.ca> Signed-off-by:
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Jeff Dike authored
From: Robert P. J. Day <rpjday@crashcourse.ca> Use newer, non-deprecated __SPIN_LOCK_UNLOCKED macro. Signed-off-by:
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Jeff Dike authored
UML's supposed nanosecond clock interacts badly with NTP when NTP decides that the clock has drifted ahead and needs to be slowed down. Slowing down the clock is done by decrementing the cycle-to-nanosecond multiplier, which is 1. Decrementing that gives you 0 and time is stopped. This is fixed by switching to a microsecond clock, with a multiplier of 1000. Signed-off-by:
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Jeff Dike authored
From: Adrian Bunk <bunk@kernel.org> This patch removes the unused and broken (the normal asm/keyboard.h files no longer exists) include/asm-um/keyboard.h Signed-off-by:
Adrian Bunk <bunk@kernel.org> Signed-off-by:
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Jeff Dike authored
Reintroduce uml_kmalloc for the benefit of UML libc code. The previous tactic of declaring __kmalloc so it could be called directly from the libc side of the house turned out to be getting too intimate with slab, and it doesn't work with slob. So, the uml_kmalloc wrapper is back. It calls kmalloc or whatever that translates into, and libc code calls it. kfree is left alone since that still works, leaving a somewhat inconsistent API. Signed-off-by:
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Johann Felix Soden authored
Error returns are negative. Signed-off-by:
Johann Felix Soden <johfel@users.sourceforge.net> Signed-off-by:
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Jeff Dike authored
Tidy the ptrace interface code. Removed a bunch of unused macros. Started converting register sets from arrays of longs to structures. Signed-off-by:
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Jeff Dike authored
There's no reason for the _kern in hppfs_kern.c, so move it to hppfs.c. Signed-off-by:
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Jeff Dike authored
hppfs tidying and fixes noticed during hch's get_inode work - style fixes a copy_to_user got its return value checked hppfs_write no longer fiddles file->f_pos because it gets and returns pos in its arguments hppfs_delete_inode dputs the underlyng procfs dentry stored in its private data and mntputs the vfsmnt stashed in s_fs_info hppfs_put_super no longer needs to mntput the s_fs_info, so it no longer needs to exist hppfs_readlink and hppfs_follow_link were doing a bunch of stuff with a struct file which they didn't use there is now a ->permission which calls generic_permission get_inode was always returning 0 for some reason - it now returns an inode if nothing bad happened Signed-off-by: -
Jeff Dike authored
A few random style fixes. Signed-off-by:
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Jeff Dike authored
Redo how host capabilities are recorded at startup and disabled on the command line. There are now explicit variables saying what's been disabled by the command line rather than the implicitness of the have_* variable being zero. The capability variables now start at zero and are set to one as their capabilities are found to be present on the host. Signed-off-by:
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- 12 May, 2008 10 commits
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Linus Torvalds authored
Because it's not correct with a non-preemptable BKL and just causes PREEMPT kernels to have longer latencies than non-PREEMPT ones (which is obviously not the point of it at all). Of course, that config option actually got removed as an option earlier, so for now this basically disables it entirely, but if BKL preemption is ever resurrected it will be a meaningful optimization. And in the meantime, it at least documents the intent of the code, while not doing the wrong thing. Signed-off-by: -
git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6Linus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6: [CIFS] don't allow demultiplex thread to exit until kthread_stop is called [CIFS] when not using unix extensions, check for and set ATTR_READONLY on create and mkdir [CIFS] add local struct inode pointer to cifs_setattr [CIFS] cifs_find_tcp_session cleanup
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Linus Torvalds authored
We should not go through the task pointer to get at the thread info, since it's usually cheaper to just access the thread info directly. So don't make the code look up 'current', when we can just use the thread info accessor functions directly. This generally avoids one level of indirection and tends to work better together with code that also looks at other thread flags (eg preempt_count). Signed-off-by: -
git://git.kernel.org/pub/scm/linux/kernel/git/hpa/linux-2.6-inttypesLinus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/hpa/linux-2.6-inttypes: types: s390: fix #ifdef reversal in <asm-s390/types.h>
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git://ftp.linux-mips.org/pub/scm/upstream-linusLinus Torvalds authored
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: (28 commits) [MIPS] Pb1000: bury the remnants of the PCI code [MIPS] Fix build failure in mips oprofile code [MIPS] fix warning message on SMP kernels [MIPS] markeins: build fix [MIPS] ELF handling - use SELFMAG instead of numeric constant [MIPS] Get rid of __ilog2 [MIPS] Fix __fls for non-MIPS32/MIPS64 cpus [MIPS] XXS1500 code style cleanup [MIPS] MTX-1 code style cleanup [MIPS] Pb1200/DBAu1200 code style cleanup [MIPS] Pb1550 code style cleanup [MIPS] Pb1500 code style cleanup [MIPS] Pb1100 code style cleanup [MIPS] Pb1000 code style cleanup [MIPS] DBAu1xx0 code style cleanup [MIPS] Alchemy PCI code style cleanup [MIPS] Alchemy common code style cleanup [MIPS] Alchemy common headers style cleanup [MIPS] Add empty argument parenthesis to GCC_IMM_ASM [MIPS] msp_hwbutton.c: minor irq handler cleanups ...
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H. Peter Anvin authored
The #ifdef for the integer types was reversed; the standard pattern in these files are: #ifndef __s390x__ /* 32-bit code */ #else /* 64-bit code */ #endif Stick with the original pattern, but make sure the 32-bit code actually comes first! Reported by Al Viro. Signed-off-by:H. Peter Anvin <hpa@zytor.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Al Viro <viro@zeniv.linux.org.uk>
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Sergei Shtylyov authored
Signed-off-by:
Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by:
Ralf Baechle <ralf@linux-mips.org>
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Thiemo Seufer authored
This patch fixes a warning-as-error induced build failure of 64bit MIPS kernels. Signed-off-by:
Thiemo Seufer <ths@networkno.de> Signed-off-by:
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Thiemo Seufer authored
This patch fixes a (harmless) warning message. Signed-off-by:
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Adrian Bunk authored
This patch fixes the following build errror caused by commit 7dffa3c6 (ntp: handle leap second via timer): <-- snip --> ... CC arch/mips/emma2rh/markeins/setup.o /home/bunk/linux/kernel-2.6/git/linux-2.6/arch/mips/emma2rh/markeins/setup.c:79: error: conflicting types for 'clock' /home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/clocksource.h:96: error: previous declaration of 'clock' was here make[2]: *** [arch/mips/emma2rh/markeins/setup.o] Error 1 <-- snip --> [Ralf: reformated to 80 colums after the fix and marked emma2rh_clock as __initdata] Signed-off-by:
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