- 21 Jan, 2005 17 commits
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Christoph Hellwig authored
Currently it's up to the filesystem ->permission method to check whether the filesystem is readonly or the file marked immutable. But this is really a VFS decision, and the distintion becomes more important when moving to per-mountpoint read only flags. For most filesystems that have been using generic_permission this is not change in behaviour. For those that we're missing the check (cifs without CIFS_MOUNT_NO_PERM and coda [1]) this is a bugfix. Both reiserfs and xfs have this check still in their ->permission routine because they call it from other places aswell. I'll try switching them over to generic_permission and will take care of this one. [1] coda_ioctl_permission always returns 0, aka always grants access, which looks more than fishy to me. Signed-off-by:Andrew Morton <akpm@osdl.org> Signed-off-by:
Linus Torvalds <torvalds@osdl.org>
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Jan Kara authored
Remove unnecessary division and modulo from ext3 code in often used paths. Without the patch an oprofile of dbench load shows ext3_get_group_desc() uses 0.84% and ext3_group_sparse() 1.51%, with the patch the numbers are 0.33% and 0.27% respectively. Signed-off-by:
Jan Kara <jack@suse.cz> Signed-off-by:
Andreas Dilger <adilger@clusterfs.com> Signed-off-by:
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Prasanna Meda authored
expand_files() cleanup: Make expand_files() common code for fork.c:fork/copy_files(), open.c:open/get_unused_fd() and fcntl.c:dup/locate_fd(). expand_files() does both expand_fd_array and expand_fd_set based on the need. This is used in dup(). open() and fork() duplicates the work of expand files. At all places we check for expanding fd array, we also check for expanding fdset. There is no need of checking and calling them seperately. This change also moves the expand_files to file.c from fcntl.c, and makes the expand_fd_array and expand_fd_set local to that file. Signed-off-by:
Prasanna Meda <pmeda@akamai.com> Signed-off-by:
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Jeff Dike authored
Signed-off-by:
Jeff Dike <jdike@addtoit.com> Signed-off-by:
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Jeff Dike authored
Fix a race where signals could be handled to the parent of a new process on the kernel stack of the child, corrupting that stack, and crashing UML when the next first runs. Signed-off-by:
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Jeff Dike authored
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Jeff Dike authored
Fixes the "profiling timer expired" message on shutting down with profiling enabled. Signed-off-by:
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Jeff Dike authored
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Jeff Dike authored
If the file backing a ubd device is not an even blocklength, then the last partial block is now readable, and it is padded with zeros. Signed-off-by:
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Jeff Dike authored
Provide definitions of __initcall, __exitcall, and __init_call for userspace code. Signed-off-by:
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Jeff Dike authored
Replace FRAME_SIZE_OFFSET with MAX_REG_OFFSET because different arches have Signed-off-by:
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Pavel Machek authored
This passes pm_message_t down to PCI drivers. Ugly translation code can be removed and this will allow PCI devices to do right thing during swsusp snapshot -- like not unneccessarily blanking display. Only obscure /sysfs code passes anything but 3 to pci_device_suspend, anyway, so this is pretty close to a nop. Signed-off-by:
Pavel Machek <pavel@suse.cz> Signed-off-by:
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Pavel Machek authored
This removes another O(n^2) algorithm from page relocation in swsusp. Relocation took as long as reading pages from disk on my machine, and it took minutes for some poor testers. Signed-off-by:
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Yoshinori Sato authored
o include/asm-h8300/mmu.h: Changeset 1.2053 support o mm/nommu.c: add __vm_enough_memory Signed-off-by:
Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by:
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Yoshinori Sato authored
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Prasanna S. Panchamukhi authored
Minor changes to the kprobes code to provide memory allocation for x86_64 architecture outside kprobes spin lock. Signed-off-by:
Prasanna S Panchamukhi <prasanna@in.ibm.com> Signed-off-by:
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Andi Kleen authored
Small cleanup: save the CPUID level once instead of regetting it all the time. Needed for some other patches. Signed-off-by:
Andi Kleen <ak@suse.de> Signed-off-by:
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- 20 Jan, 2005 23 commits
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Venkatesh Pallipadi authored
do_suspend_lowlevel doesn't have an argument anymore, but the assembly code would still test it and fail randomly. Remove the bogus test. Signed-off-by:
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Andi Kleen authored
With Martin Schwidefsky <schwidefsky@de.ibm.com> Fix typo in ioremap pud conversion Signed-off-by:
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Andi Kleen authored
Fix SMP race in NMI watchdog on i386/x86-64 Fix a long standing SMP Setup race in the NMI watchdog. The watchdog would tick from very early and check if all CPUs increase their timer interrupts. For that it would check the cpu_online_map. Now if a CPU took too long to boot the watchdog would trigger prematurely because the CPU didn't increase its timer count yet. Fix is to check cpu_callin_map instead of cpu_online_map because the first is only set when a CPU started its timer interrupt. I fixed it on i386 and x86-64. Description of the problem from Manpreet Singh. Thanks. Cc: <manpreet@fabric7.com> Signed-off-by:
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Andi Kleen authored
Fix a long standing race in x86-64 SMP TLB handling. When a mm is freed and another thread exits to a lazy TLB thread (like idle) the freed user page tables would be still kept loaded in the idle thread. When an interrupt does a prefetch on NULL the CPU would try to follow it and read random data. This could lead to machine checks on Opterons in some cases. Credit goes to some unnamed debugging wizards at AMD who described the problem. All blame to me. I did the fix based on their description. Signed-off-by:
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Andi Kleen authored
Check if node exists during CMP setup and fall back to other node if needed. This avoids a crash when the NUMA node discovery fails (e.g. due to node interleaving in the BIOS or numa=off) Signed-off-by:
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Matthew Dobson authored
More missing nodemask.h inclusions. Signed-off-by:
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Vincent Hanquez authored
Hi, the following patch: - correct the err variable tested twice when _NSIG_WORDS == 1 (unlikely to happen, but ..) - remove some |= in favor of = because we don't need to 'pack' err Signed-off-by:
Vincent Hanquez <tab@snarc.org> Acked-by:
Ingo Molnar <mingo@elte.hu> Signed-off-by:
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Randy Dunlap authored
Correct .text references to .init.data; init_intel_cacheinfo() can be __init. Signed-off-by:
Randy Dunlap <rddunlap@osdl.org> Signed-off-by:
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Suresh B. Siddha authored
Current code can lead to corruption. Use cpumask_t instead of unsigned long. Signed-off-by:
Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by:
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Rik van Riel authored
In unprivileged Xen domains, all that __ioremap() does is a "return NULL", which causes dmi_iterate() to crash the kernel at boot time. This trivial check bails dmi_iterate() out of the loop when it finds that the ioremap() returned a NULL pointer. (akpm: this fix goes beyond xen - ioremap can return NULL) Signed-off-by:
Rik van Riel <riel@redhat.com> Signed-off-by:
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Stephen Rothwell authored
This patch removes some unused stuff from PPC64 iSeries: - asm-ppc64/iSeries/iSeries_VpdInfo.h - iSeries_GetLocationData() - LocationData structure - device_Location() Signed-off-by:
Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by:
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Milton D. Miller II authored
We werent enforcing the minimum hardware MMU hashtable size. Signed-off-by:
Milton Miller <miltonm@bga.com> Signed-off-by:
Anton Blanchard <anton@samba.org> Signed-off-by:
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Benjamin Herrenschmidt authored
The g5 code has special hooks to "hide" some PCI devices when they are off. Currently, this code involves some calls to match a pci_dev from the open firmware node and such things that are causing some problems with the latest version of my sungem driver who wants to do some of this in atomic contexts. This patch moves that to a list of struct device_node instead, which also ends up simplifying the code. Later, I'll go back to manipulating PCI devices in a clean way when Brian King's PCI blocking patch gets in, but only after I change sungem again to never call these in atomic context. This is a 3 step transition basically Signed-off-by:
Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by:
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Linas Vepstas authored
This describes the PCI bus EEH "Extended Error Handling" concepts and operation. Signed-off-by:
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Anton Blanchard authored
Replace CONFIG_IRQ_ALL_CPUS with a boot option (noirqdistrib). Compile options arent much use on a distro kernel. This also removes the ppc64 use of smp_threads_ready. I considered removing the option completely but we have had problems in the past with firmware bugs. In those cases the boot option would have helped. Signed-off-by:
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Tom Rini authored
When the update_process_times call was moved out of do_timer for the UP case, the replicator didn't track down the hiding and just added ifndef SMP. This removes the ifdefs and the indirection of calling another file for one function in a third file. I also removed the per-cpu multipler and counter. On some architectures (x86 and sparc64) these are set via /proc/profile setup_profiling_timer to increase the timer interrupt by a factor over HZ. However, this was not not implemented for ppc (like several other architectures), so it was just decrementing, testing, and setting per-cpu variables back to 1. Signed-off-by:
Tom Rini <trini@kernel.crashing.org> Signed-off-by:
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Tom Rini authored
There is a problem in the TLB Miss (and Error, as they jump to the Miss handler) handlers. The problem is that when an app spans more than one L1 entry, we don't have all of the correct information, and do_page_fault() things a protection fault happened, when it didn't really. The fix for this is to modify the handlers slightly to force a TLB Error in this case. Lots of suggestions from: Joakim Tjernlund <joakim.tjernlund@lumentis.se> Signed-off-by:
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Tom Rini authored
Replace save_flags()/resore_flags() with spin_lock_irqsave() / spin_unlock_irqrestore() and document reasons for locking in the Qspan PCI code. Signed-off-by:
James Nelson <james4765@gmail.com> Signed-off-by:
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Tom Rini authored
Replace cli() function call with local_irq_disable() in shutdown code for MPC8xx platforms. Signed-off-by:
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Tom Rini authored
Replace cli() function calls with local_irq_disable() in shutdown / restart code for pal4. Signed-off-by:
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Tom Rini authored
Replace cli() function call with local_irq_disable() in restart code on APUS. Signed-off-by:
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Tom Rini authored
Replace save_flags()/resore_flags() with spin_lock_irqsave()/spin_unlock_irqrestore() and document reasons for locking. Signed-off-by:
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Tom Rini authored
Replace save_flags()/resore_flags() with spin_lock_irqsave()/spin_unlock_irqrestore() and document reasons for locking. Signed-off-by:
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