New chmod() allows only acceptable permission, and if not acceptable, it returns -EPERM. Old one allows even if it can't store permission to on disk inode. But it seems too strict for users. E.g. https://bugzilla.redhat.com/show_bug.cgi?id=449080: With new one, rsync couldn't create the temporary file. So, this patch allows like old one, but now it doesn't change the permission if it can't store, and it returns 0. Also, this patch fixes missing check. Signed-off-by: OGAWA Hirofumi <hirofu...

Update document and make getdelays.c show delay accounting for memory reclaim. For making a distinction between "swapping in pages" and "memory reclaim" in getdelays.c, MEM is changed to SWAP. Signed-off-by: Keika Kobayashi <kobayashi.kk@ncos.nec.co.jp> --- Documentation/accounting/delay-accounting.txt | 11 ++++++++--- Documentation/accounting/getdelays.c | 8 ++++++-- 2 files changed, 14 insertions(+), 5 deletions(-) diff --git a/Documentation/accounting/delay-accounting...

Sometimes, application responses become bad under heavy memory load. Applications take a bit time to reclaim memory. The statistics, how long memory reclaim takes, will be useful to measure memory usage. This patch adds accounting memory reclaim to per-task-delay-accounting for accounting the time of do_try_to_free_pages(). <i.e> - When System is under low memory load, memory reclaim may not occur. $ free total used free shared buffers cached Me...

Since alloc_bootmem_core does no goal-fallback anymore and just returns NULL if the allocation fails, we might now use it in alloc_bootmem_section without all the fixup code for a misplaced allocation. Also, the limit can be the first PFN of the next section as the semantics is that the limit is _above_ the allocated region, not within. Signed-off-by: Johannes Weiner <hannes@saeurebad.de> CC: Yasunori Goto <y-goto@jp.fujitsu.com> --- mm/bootmem.c | 27 ++++++-------------------...

The old node-agnostic code tried allocating on all nodes starting from the one with the lowest range. alloc_bootmem_core retried without the goal if it could not satisfy it and so the goal was only respected at all when it happened to be on the first (lowest page numbers) node (or theoretically if allocations failed on all nodes before to the one holding the goal). Introduce a non-panicking helper that starts allocating from the node holding the goal and falls back only after all thes tries failed...

Factor out the common operation of marking a range on the bitmap. Signed-off-by: Johannes Weiner <hannes@saeurebad.de> CC: Ingo Molnar <mingo@elte.hu> CC: Yinghai Lu <yhlu.kernel@gmail.com> CC: Andi Kleen <andi@firstfloor.org> --- mm/bootmem.c | 65 +++++++++++++++++++++++++++++++++++++++-------------------- 1 file changed, 43 insertions(+), 22 deletions(-) --- a/mm/bootmem.c +++ b/mm/bootmem.c @@ -225,6 +225,44 @@ unsigned long __init free_all_bootmem(vo return...

Rewrite the code in a more concise way using less variables. Signed-off-by: Johannes Weiner <hannes@saeurebad.de> CC: Ingo Molnar <mingo@elte.hu> CC: Yinghai Lu <yhlu.kernel@gmail.com> CC: Andi Kleen <andi@firstfloor.org> --- mm/bootmem.c | 83 +++++++++++++++++++++++++++-------------------------------- 1 file changed, 38 insertions(+), 45 deletions(-) --- a/mm/bootmem.c +++ b/mm/bootmem.c @@ -144,66 +144,59 @@ unsigned long __init init_bootmem(unsign static u...

Reincarnate get_mapsize as bootmap_bytes and implement bootmem_bootmap_pages on top of it. Adjust users of these helpers and make free_all_bootmem_core use bootmem_bootmap_pages instead of open-coding it. Signed-off-by: Johannes Weiner <hannes@saeurebad.de> --- mm/bootmem.c | 27 +++++++++------------------ 1 file changed, 9 insertions(+), 18 deletions(-) --- a/mm/bootmem.c +++ b/mm/bootmem.c @@ -50,17 +50,11 @@ early_param("bootmem_debug", bootmem_deb __FUNCTION__, ## args);...

Signed-off-by: Johannes Weiner <hannes@saeurebad.de> --- mm/bootmem.c | 150 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 149 insertions(+), 1 deletion(-) --- a/mm/bootmem.c +++ b/mm/bootmem.c @@ -47,7 +47,10 @@ static unsigned long __init get_mapsize( return ALIGN(mapsize, sizeof(long)); } -/* return the number of _pages_ that will be allocated for the boot bitmap */ +/** + * bootmem_bootmap_pages - calculate bitmap size in pages + * @pages: numb...

This only reorders functions so that further patches will be easier to read. No code changed. Signed-off-by: Johannes Weiner <hannes@saeurebad.de> --- include/linux/bootmem.h | 79 ++++----- mm/bootmem.c | 413 +++++++++++++++++++++++------------------------- 2 files changed, 246 insertions(+), 246 deletions(-) --- a/mm/bootmem.c +++ b/mm/bootmem.c @@ -38,6 +38,19 @@ unsigned long saved_max_pfn; bootmem_data_t bootmem_node_data[MAX_NUMNODES] __initdata; +/* + *...

Hello, according to http://www.kernel.org/pub/linux/docs/lkml/reporting-bugs.html [1.] One line summary of the problem: [2.6.26-rc5] iwlwifi 4965 not working - last on 2.6.23 [2.] Full description of the problem/report: linux: gentoo kernel vanilla-sources-2-6-26-rc5 laptop: Asus S96S WiFi: intel 4695 WiFi not working. In the same config, but with gentoo-sources-2.6.23 WiFi working well. dmesg - 2.6.23 iwl4965: Intel(R) Wireless WiFi Link 4965AGN driver for Linux, 1.2.25ds iwl4965: Copyri...

On 2.6.26-rc[2345], I am seeing a hang during boot with CONFIG_NUMA=n, but changing to CONFIG_NUMA=y allows successful boot. This is on a 4-way AMD64 (HP) server with 8 GB RAM. Using initcall_debug, the last output on a hang is from arch/x86/pci/k8-bus_64.c: calling early_fill_mp_bus_info+0x0/0x7b2 node 0 link 1: io port [1000, 3fff] node 1 link 2: io port [4000, ffff] TOM: 0000000080000000 aka 2048M node 0 link 1: mmio [e8000000, fddfffff] node 1 link 2: mmio [fde00000, fdffffff] node 0 li...

FWIW I noticed a post where the person had changed 5 to 20, and it seemed to work for them; So with that in mind I decide to give that a go, here is the location: drivers/acpi/ec.c @@ -527,47 +488,51 @@ static u32 acpi_ec_gpe_handler(void *data) { acpi_status status = AE_OK; struct acpi_ec *ec = data; u8 state = acpi_ec_read_status(ec); pr_debug(PREFIX "~~~> interrupt\n"); atomic_inc(&ec->irq_count); - if (atomic_read(&ec->irq_count)...

[ I noticed that I left a "unsigned long flags" in the version I sent out. That was due to my first faulty implementation that used a spin lock. Please use this patch instead. The only difference between this patch and the one I sent out is that I removed the unused flags variables from ftrace_enable() and ftrace_disable(). ] Peter Zijlstra found that taking down and bringing up a new CPU caused ftrace to crash the kernel. This was due to some arch calls that were being traced by the fu...

This patch fixes timeouts conversion to jiffies, by replacing msecs_to_jiffies() calls with usecs_to_jiffies(). According to TCG TPM Specification Version 1.2 Revision 103 (pages 166, 167) TPM timeouts and durations are returned in microseconds (usec) not in miliseconds (msec). Signed-off-by: Marcin Obara <marcin_obara@users.sourceforge.net> --- linux/drivers/char/tpm/tpm.c 2008-06-05 20:57:06.000000000 +0200 +++ linux_tpm/drivers/char/tpm/tpm.c 2008-06-05 20:54:52.000000000 +0200 @@ -524,...

File: Documentation/accounting/getdelays.c Linux version: 2.6.25-4 Description: This patch adds a USR1 signal handler to getdelays.c, which causes getdelays to close its logfile and reopen it (if '-w logfile' is specified). This is useful in situations when getdelays is running for a long time (i.e, the log file growing) and you need to rotate the logs but don't want to lose any log data. Sample usage: 1 # ./getdelays -m0,1,2,3 -l -w getdelays.log & (time passes) 2 # mv getde...

Kthreads that have called kthread_bind() are bound to specific cpus, so other tasks should not be able to change their cpus_allowed from under them. Otherwise, it is possible to move kthreads, such as the migration or software watchdog threads, so they are not allowed access to the cpu they work on. Cc: Peter Zijlstra <peterz@infradead.org> Cc: Paul Menage <menage@google.com> Cc: Paul Jackson <pj@sgi.com> Signed-off-by: David Rientjes <rientjes@google.com> --- include/l...

I'm all for it .. I've crashed test systems just by migrating tasks that are suppose to stay bound while using cpusets .. Daniel --

Not in the drivers/pci/pci-driver.c case because the setting of cpus_allowed to nodecpumask is only temporary (as is the disabling of the mempolicy). It's just done for the probe callback and then reset to the old cpumask. So any migration here would be lost. I can't speculate about the net/sunrpc/svc.c case because I don't know if user migration is harmful or discouraged. The behavior with my patch is the same for any calls to set_cpus_allowed_ptr() for tasks that haven't called kthread...

On Thu, 5 Jun 2008 22:35:12 +0530 Whoa. You didn't copy anything like enough mailing lists for a change of this magnitude. I added some. This is a large change in behaviour! a) applications will now get a synchronous SIGBUS when modifying a page over an ENOSPC filesystem. Whereas previously they could have proceeded to completion and then detected the error via an fsync(). It's going to take more than one skimpy little paragraph to justify this, and to demonstrate that it is ...

Previously, one would have to specifically choose CONFIG_OLPC and CONFIG_PCI_GOOLPC in order to enable PCI_OLPC. That doesn't really work for distro kernels, so this patch allows one to choose CONFIG_OLPC and CONFIG_PCI_GOANY in order to build in OLPC support in a generic kernel (as requested by Robert Millan). This also moves GOOLPC before GOANY in the menuconfig list. Finally, make pci_access_init return early if we detect OLPC hardware. There's no need to continue probing stuff, and pci_pcbio...

On Thu, 5 Jun 2008 13:07:35 -0700 (PDT) The options above GOANY are included in GOANY. Previously, GOANY did not support GOOLPC, so GOOLPC was listed after it. Now that GOANY supports GOOLPC, it can be listed above w/ the others. Plus, _I_ think it looks nicer. :) That hunk can easily be removed from the patch if others disagree. --

So the Salomonic solution is: You pick it up and send it either to Jesse or x86@kernel.org :) I put it into my urgent bucket just to be on the safe side. Thanks, tglx --

Just a quick explanation of the pagemap interface from a userspace point of view, and an example of how to use it (in English, not code). Signed-off-by: Thomas Tuttle --- Documentation/vm/pagemap.txt | 77 ++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 77 insertions(+), 0 deletions(-) create mode 100644 Documentation/vm/pagemap.txt diff --git a/Documentation/vm/pagemap.txt b/Documentation/vm/pagemap.txt new file mode 100644 index 0000000..b33a5e4 --- /dev/null +++ b/Document...

Hmm. I seem to recall choosing EIO because that's what unaligned reads with direct I/O report. I don't particularly care though. Acked-by: Matt Mackall <mpm@selenic.com> -- Mathematics is the supreme nostalgia of our time. --