- 23 Jun, 2006 40 commits
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Jens Axboe authored
Signed-off-by:Jens Axboe <axboe@suse.de>
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Jens Axboe authored
This saves 8 bytes of data in 64-bit archs. Signed-off-by: -
Jens Axboe authored
The IDE power management can just use the ->end_io_data member to store it's data. Signed-off-by: -
Jens Axboe authored
A process flag to indicate whether we are doing sync io is incredibly ugly. It also causes performance problems when one does a lot of async io and then proceeds to sync it. Part of the io will go out as async, and the other part as sync. This causes a disconnect between the previously submitted io and the synced io. For io schedulers such as CFQ, this will cause us lost merges and suboptimal behaviour in scheduling. Remove PF_SYNCWRITE completely from the fsync/msync paths, and let the O_DIRECT path just directly indicate that the writes are sync by using WRITE_SYNC instead. Signed-off-by: -
Jens Axboe authored
We cannot update them if the user changes nr_requests, so don't set it in the first place. The gains are pretty questionable as well. The batching loss has been shown to decrease throughput. Signed-off-by: -
Dave Jones authored
We already drop the refcount in elevator_exit(), and as we're setting 'e' to NULL, we'll never take that branch anyway. Finally, as 'e' is a local var that isn't referenced afterwards, setting it to NULL is pointless. Signed-off-by:
Dave Jones <davej@redhat.com> Signed-off-by:
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Alexey Dobriyan authored
Signed-off-by:
Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by:
Andrew Morton <akpm@osdl.org> Signed-off-by:
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Paolo 'Blaisorblade' Giarrusso authored
The queue lock can be taken from interrupts so it must always be taken with irq disabling primitives. Some primitives already verify this. blk_start_queue() is called under this lock, so interrupts must be disabled. Also document this requirement clearly in blk_init_queue(), where the queue spinlock is set. Signed-off-by:
Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by:
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Akinobu Mita authored
Use hlist instead of list_head for request hashtable in deadline-iosched and as-iosched. It also can remove the flag to know hashed or unhashed. Signed-off-by:
Akinobu Mita <mita@miraclelinux.com> Signed-off-by:
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Linus Torvalds authored
* master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: [NET]: Require CAP_NET_ADMIN to create tuntap devices. [NET]: fix net-core kernel-doc [TCP]: Move inclusion of <linux/dmaengine.h> to correct place in <linux/tcp.h> [IPSEC]: Handle GSO packets [NET]: Added GSO toggle [NET]: Add software TSOv4 [NET]: Add generic segmentation offload [NET]: Merge TSO/UFO fields in sk_buff [NET]: Prevent transmission after dev_deactivate [IPV6] ADDRCONF: Fix default source address selection without CONFIG_IPV6_PRIVACY [IPV6]: Fix source address selection. [NET]: Avoid allocating skb in skb_pad
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git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6Linus Torvalds authored
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (65 commits) ACPI: suppress power button event on S3 resume ACPI: resolve merge conflict between sem2mutex and processor_perflib.c ACPI: use for_each_possible_cpu() instead of for_each_cpu() ACPI: delete newly added debugging macros in processor_perflib.c ACPI: UP build fix for bugzilla-5737 Enable P-state software coordination via _PDC P-state software coordination for speedstep-centrino P-state software coordination for acpi-cpufreq P-state software coordination for ACPI core ACPI: create acpi_thermal_resume() ACPI: create acpi_fan_suspend()/acpi_fan_resume() ACPI: pass pm_message_t from acpi_device_suspend() to root_suspend() ACPI: create acpi_device_suspend()/acpi_device_resume() ACPI: replace spin_lock_irq with mutex for ec poll mode ACPI: Allow a WAN module enable/disable on a Thinkpad X60. sem2mutex: acpi, acpi_link_lock ACPI: delete unused acpi_bus_drivers_lock sem2mutex: drivers/acpi/processor_perflib.c ACPI add ia64 exports to build acpi_memhotplug as a module ACPI: asus_acpi_init(): propagate correct return value ... Manual resolve of conflicts in: arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c include/acpi/processor.h
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Bob Copeland authored
Update the sparse documentation to omit the -Wbitwise flag example (as it is now passed by default), and document the kernel defines to enable endianness checking. Signed-off-by:
Bob Copeland <me@bobcopeland.com> Signed-off-by:
Linus Torvalds <torvalds@osdl.org>
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Constantine Sapuntzakis authored
While writing a version of losetup, I ran into the problem that the loop device was returning total garbage. It turns out the problem was that this losetup was only issuing the LOOP_SET_FD ioctl and not issuing a subsequent LOOP_SET_STATUS ioctl. This losetup didn't have any special status to set, so it left out the call. The deeper cause is that loop_set_fd sets the transfer function to NULL, which causes no transfer to happen lo_do_transfer. This patch fixes the problem by setting transfer to transfer_none in loop_set_fd. Signed-off-by:
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Mike Miller authored
Sometimes partitions claim to be larger than the reported capacity of a disk device. This patch makes the kernel warn about those partitions. We still permit these patitions to be used. Quoting Andries Brouwer <Andries.Brouwer@cwi.nl>: Case 1: The kernel is mistaken about the size of the disk. (There are commands to clip a disk to a certain capacity, there are jumpers to tell a disk that it should report a certain capacity etc. Usually this is because of BIOS bugs. In bad cases the machine will crash in the BIOS and hence fail to boot if the disk reports full capacity.) In such cases actually accessing the blocks of the partition may work fine, or may work fine after running an unclip utility. I wrote "setmax" some years ago precisely for this reason. Case 2: There was a messy partition table (maybe just a rounding error) but the actual filesystem on the partition is contained in the physical disk. Now using the filesystem goes without problem. Case 3: Both partition and filesystem extend beyond the end of the disk. In forensic or debugging situations one often uses a copy of the start of a disk. Now access beyond the end gives an expected I/O error. Signed-off-by:
Mike Miller <mike.miller@hp.com> Signed-off-by:
Stephen Cameron <steve.cameron@hp.com> Signed-off-by:
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Eric Sesterhenn authored
Signed-off-by:
Eric Sesterhenn <snakebyte@gmx.de> Signed-off-by:
"Salyzyn, Mark" <mark_salyzyn@adaptec.com> Signed-off-by:
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Jan Kara authored
Split the checkpoint list of the transaction into two lists. In the first list we keep the buffers that need to be submitted for IO. In the second list are kept buffers that were already submitted and we just have to wait for the IO to complete. This should simplify a handling of checkpoint lists a bit and can eventually be also a performance gain. Signed-off-by:
Jan Kara <jack@suse.cz> Cc: Mark Fasheh <mark.fasheh@oracle.com> Cc: "Stephen C. Tweedie" <sct@redhat.com> Signed-off-by:
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Peter Hagervall authored
Mark a few non-exported functions static. Signed-off-by:
Peter Hagervall <hager@cs.umu.se> Cc: Paul Fulghum <paulkf@microgate.com> Signed-off-by:
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Jan Beulich authored
Correct the return type of handle_IRQ_event() (inconsistency noticed during Xen development), and remove redundant declarations. The return type adjustment required breaking out the definition of irqreturn_t into a separate header, in order to satisfy current include order dependencies. Signed-off-by:
Jan Beulich <jbeulich@novell.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Ian Molton <spyro@f2s.com> Cc: Mikael Starvik <starvik@axis.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: Hirokazu Takata <takata.hirokazu@renesas.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: William Lee Irwin III <wli@holomorphy.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Miles Bader <uclinux-v850@lsi.nec.co.jp> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by:
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Adrian Bunk authored
This patch fixes a NULL dereference spotted by the Coverity checker. Signed-off-by:
Adrian Bunk <bunk@stusta.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Neil Brown <neilb@cse.unsw.edu.au> Signed-off-by:
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Randy Dunlap authored
Add a chapter on typedefs, copied from an email from Linus to lkml on Feb. 3, 2006. (Subject: Re: [RFC][PATCH 1/5] Virtualization/containers: startup) Signed-off-by:
Randy Dunlap <rdunlap@xenotime.net> Signed-off-by:
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Porpoise authored
When CONFIG_BASE_SAMLL=1, cascade() in may enter the infinite loop. Because of CONFIG_BASE_SMALL=1(TVR_BITS=6 and TVN_BITS=4), the list base->tv5 may cascade into base->tv5. So, the kernel enters the infinite loop in the function cascade(). I created a test module to verify this bug, and a patch to fix it. #include <linux/kernel.h> #include <linux/module.h> #include <linux/init.h> #include <linux/timer.h> #if 0 #include <linux/kdb.h> #else #define kdb_printf printk #endif #define TVN_BITS (CONFIG_BASE_SMALL ? 4 : 6) #define TVR_BITS (CONFIG_BASE_SMALL ? 6 : 8) #define TVN_SIZE (1 << TVN_BITS) #define TVR_SIZE (1 << TVR_BITS) #define TVN_MASK (TVN_SIZE - 1) #define TVR_MASK (TVR_SIZE - 1) #define TV_SIZE(N) (N*TVN_BITS + TVR_BITS) struct timer_list timer0; struct timer_list dummy_timer1; struct timer_list dummy_timer2; void dummy_timer_fun(unsigned long data) { } unsigned long j=0; void check_timer_base(unsigned long data) { kdb_printf("check_timer_base %08x\n",jiffies); mod_timer(&timer0,(jiffies & (~0xFFF)) + 0x1FFF); } int init_module(void) { init_timer(&timer0); timer0.data = (unsigned long)0; timer0.function = check_timer_base; mod_timer(&timer0,jiffies+1); init_timer(&dummy_timer1); dummy_timer1.data = (unsigned long)0; dummy_timer1.function = dummy_timer_fun; init_timer(&dummy_timer2); dummy_timer2.data = (unsigned long)0; dummy_timer2.function = dummy_timer_fun; j=jiffies; j&=(~((1<<TV_SIZE(3))-1)); j+=(1<<TV_SIZE(3)); j+=(1<<TV_SIZE(4)); kdb_printf("mod_timer %08x\n",j); mod_timer(&dummy_timer1, j ); mod_timer(&dummy_timer2, j ); return 0; } void cleanup_module() { del_timer_sync(&timer0); del_timer_sync(&dummy_timer1); del_timer_sync(&dummy_timer2); } (Cleanups from Oleg) [oleg@tv-sign.ru: use list_replace_init()] Cc: Oleg Nesterov <oleg@tv-sign.ru> Cc: Matt Mackall <mpm@selenic.com> Signed-off-by:Oleg Nesterov <oleg@tv-sign.ru> Signed-off-by:
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Oleg Nesterov authored
list_splice_init(list, head) does unneeded job if it is known that list_empty(head) == 1. We can use list_replace_init() instead. Signed-off-by:
David S. Miller <davem@davemloft.net> Signed-off-by:
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Oleg Nesterov authored
list_replace() is similar to list_replace_rcu(), but unlike list_replace_rcu() it could be used when list_empty(old) == 1 doesn't use barriers Signed-off-by:
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bjdouma authored
Cc: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by:
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Brent Casavant authored
There are three different IO cards which an SGI IOC4 controller may find itself on. One of these variants does not bring out the IDE and serial signals, so we need to disable attaching the corresponding IOC4 subdrivers to such cards. Cleans up message clutter emitted during device probing. Signed-off-by:
Brent Casavant <bcasavan@sgi.com> Signed-off-by:
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Randy Dunlap authored
Fix one audit kernel-doc description (one parameter was missing). Add audit*.c interfaces to DocBook. Add BSD accounting interfaces to DocBook. Signed-off-by:
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Paul E. McKenney authored
Remove synchronize_kernel() (deprecated 2-APR-2005 in http://lkml.org/lkml/2005/4/3/11) and makes the RCU API inaccessible to non-GPL Linux kernel modules (as was announced more than one year ago in http://lkml.org/lkml/2005/4/3/8). Tested on x86 and ppc64. Signed-off-by:
"Paul E. McKenney" <paulmck@us.ibm.com> Signed-off-by:
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Jes Sorensen authored
kernel/sys.c doesn't have anything in it relying on linux/init.h - remove the include. Signed-off-by:
Jes Sorensen <jes@sgi.com> Signed-off-by:
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Randy Dunlap authored
Provide a checklist of techniques to aid kernel patch submitters in producing healthy patches and in lessening a burden on maintainers. Signed-off-by:
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NeilBrown authored
If invalidate_mapping_pages is called to invalidate a very large mapping (e.g. a very large block device) and if the only active page in that device is near the end (or at least, at a very large index), such as, say, the superblock of an md array, and if that page happens to be locked when invalidate_mapping_pages is called, then pagevec_lookup will return this page and as it is locked, 'next' will be incremented and pagevec_lookup will be called again. and again. and again. while we count from 0 upto a very large number. We should really always set 'next' to 'page->index+1' before going around the loop again, not just if the page isn't locked. Cc: "Steinar H. Gunderson" <sgunderson@bigfoot.com> Signed-off-by:
Neil Brown <neilb@suse.de> Signed-off-by:
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Andrew Morton authored
Cc: Greg KH <greg@kroah.com> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by:
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Andrew Morton authored
Put the connector exports at the functions so people can see them in context. Cc: Evgeniy Polyakov <johnpol@2ka.mipt.ru> Cc: Greg KH <greg@kroah.com> Signed-off-by:
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Pekka Enberg authored
Switch an open-coded strstrip() to use the new API. Acked-by:
Corey Minyard <minyard@acm.org> Signed-off-by:
Pekka Enberg <penberg@cs.helsinki.fi> Signed-off-by:
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Pekka Enberg authored
Add a new strstrip() function to lib/string.c for removing leading and trailing whitespace from a string. Cc: Michael Holzheu <holzheu@de.ibm.com> Acked-by:
Ingo Oeser <ioe-lkml@rameria.de> Acked-by:
Joern Engel <joern@wohnheim.fh-wedel.de> Cc: Corey Minyard <minyard@acm.org> Signed-off-by:
Michael Holzheu <HOLZHEU@de.ibm.com> Signed-off-by:
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Matt Helsley authored
Change the license on the process event structure passed between kernel and userspace. Signed-off-by:
Matt Helsley <matthltc@us.ibm.com> Acked-by:
Guillaume Thouvenin <guillaume.thouvenin@bull.net> Acked-by:
Nguyen Anh Quynh <aquynh@gmail.com> Signed-off-by:
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Matt Helsley authored
Move connector header include to precisely where it's needed. Remove unused time.h header file as well. This was leftover from previous iterations of the process events patches. Signed-off-by:
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Hua Zhong authored
The likely() profiling tools show that __alloc_page() causes a lot of misses: ! 132 119193 __alloc_pages():mm/page_alloc.c@937 Because most __alloc_page() calls are not atomic. Signed-off-by:
Hua Zhong <hzhong@gmail.com> Signed-off-by:
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Mingming Cao authored
The percpu counter data type are changed in this set of patches to support more users like ext3 who need more than 32 bit to store the free blocks total in the filesystem. - Generic perpcu counters data type changes. The size of the global counter and local counter were explictly specified using s64 and s32. The global counter is changed from long to s64, while the local counter is changed from long to s32, so we could avoid doing 64 bit update in most cases. - Users of the percpu counters are updated to make use of the new percpu_counter_init() routine now taking an additional parameter to allow users to pass the initial value of the global counter. Signed-off-by:
Mingming Cao <cmm@us.ibm.com> Signed-off-by:
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Ravikiran G Thirumalai authored
- Move percpu_counter routines from mm/swap.c to lib/percpu_counter.c Signed-off-by:
Ravikiran Thirumalai <kiran@scalex86.org> Signed-off-by:
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Laurent MEYER authored
- When setting a sighandler using sigaction() call, if the flag SA_ONSTACK is set and no alternate stack is provided via sigaltstack(), the kernel still try to install the alternate stack. This behavior is the opposite of the one which is documented in Single Unix Specifications V3. - Also when setting an alternate stack using sigaltstack() with the flag SS_DISABLE, the kernel try to install the alternate stack on signal delivery. These two use cases makes the process crash at signal delivery. Signed-off-by:
Laurent Meyer <meyerlau@fr.ibm.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: David Howells <dhowells@redhat.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Roman Zippel <zippel@linux-m68k.org> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Kazumoto Kojima <kkojima@rr.iij4u.or.jp> Cc: Chris Zankel <chris@zankel.net> Signed-off-by:
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