23 Jun, 2006
40 commits
-
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
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
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: Andrew Morton
Signed-off-by: Linus Torvalds -
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
: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
Signed-off-by: Stephen Cameron
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Signed-off-by: Eric Sesterhenn
Signed-off-by: Alexey Dobriyan
Cc: Bartlomiej Zolnierkiewicz
Cc: Alan Cox
Cc: James Bottomley
Acked-by: "Salyzyn, Mark"
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
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
Cc: Mark Fasheh
Cc: "Stephen C. Tweedie"
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Mark a few non-exported functions static.
Signed-off-by: Peter Hagervall
Cc: Paul Fulghum
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
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
Cc: Richard Henderson
Cc: Ivan Kokshaysky
Cc: Russell King
Cc: Ian Molton
Cc: Mikael Starvik
Cc: Yoshinori Sato
Cc: Hirokazu Takata
Cc: Heiko Carstens
Cc: Martin Schwidefsky
Cc: William Lee Irwin III
Cc: "David S. Miller"
Cc: Miles Bader
Cc: Geert Uytterhoeven
Cc: Roman Zippel
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This patch fixes a NULL dereference spotted by the Coverity checker.
Signed-off-by: Adrian Bunk
Cc: "H. Peter Anvin"
Cc: Neil Brown
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
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
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
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
#include
#include
#include
#if 0
#include
#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<<<
Cc: Matt Mackall
Signed-off-by: Oleg Nesterov
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
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: Oleg Nesterov
Acked-by: David S. Miller
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
list_replace() is similar to list_replace_rcu(), but unlike
list_replace_rcu() itcould be used when list_empty(old) == 1
doesn't use barriers
Signed-off-by: Oleg Nesterov
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Cc: Alexey Dobriyan
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
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
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
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: Randy Dunlap
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
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"
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
kernel/sys.c doesn't have anything in it relying on linux/init.h -
remove the include.Signed-off-by: Jes Sorensen
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Provide a checklist of techniques to aid kernel patch submitters in
producing healthy patches and in lessening a burden on maintainers.Signed-off-by: Randy Dunlap
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
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, thenpagevec_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"
Signed-off-by: Neil Brown
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Cc: Greg KH
Cc: Russell King
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Put the connector exports at the functions so people can see them in context.
Cc: Evgeniy Polyakov
Cc: Greg KH
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Switch an open-coded strstrip() to use the new API.
Acked-by: Corey Minyard
Signed-off-by: Pekka Enberg
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add a new strstrip() function to lib/string.c for removing leading and
trailing whitespace from a string.Cc: Michael Holzheu
Acked-by: Ingo Oeser
Acked-by: Joern Engel
Cc: Corey Minyard
Signed-off-by: Pekka Enberg
Acked-by: Michael Holzheu
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Change the license on the process event structure passed between kernel and
userspace.Signed-off-by: Matt Helsley
Acked-by: Guillaume Thouvenin
Acked-by: Nguyen Anh Quynh
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
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: Matt Helsley
Cc: Guillaume Thouvenin
Cc: Nguyen Anh Quynh
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
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
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
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
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
- Move percpu_counter routines from mm/swap.c to lib/percpu_counter.c
Signed-off-by: Ravikiran Thirumalai
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
- 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
Cc: Richard Henderson
Cc: Ivan Kokshaysky
Cc: David Howells
Cc: Yoshinori Sato
Cc: Geert Uytterhoeven
Cc: Roman Zippel
Cc: Kyle McMartin
Cc: Paul Mundt
Cc: Kazumoto Kojima
Cc: Chris Zankel
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Remove redundant casts from NEW_AUX_ENT() arguments in fs/binfmt_elf.c
Signed-off-by: Jesper Juhl
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Do a CodingStyle cleanup of fs/binfmt_elf.c and also remove some pointless
casts of kmalloc() return values in the same file.Signed-off-by: Jesper Juhl
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Update Documentation/devices.txt with a new version from the LANANA site
http://www.lanana.org/docs/device-list/devices-2.6+.txtSigned-off-by: Jan Engelhardt
Cc: Torben Mathiasen
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Use the new LED infrastructure to support the 6 LEDs present on the Amstrad
Delta.[akpm@osdl.org: cleanup]
Signed-off-by: Jonathan McDowell
Ackde-by: Richard Purdie
Cc: Ben Dooks
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Signed-off-by: Andreas Mohr
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Steven Rostedt points out that `rsv' here is usually
NULL, so we should avoid calling kfree().Also, fix up some nearby whitespace damage.
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
There are a couple of places where JBD has to check to see whether an unneeded
memory allocation was performed. Usually it _was_ needed, so we end up
calling kfree(NULL). We can micro-optimise that by checking the pointer
before calling kfree().Thanks to Steven Rostedt for identifying this.
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The hardirq_ctx and softirq_ctx variables are written to on init only,
Signed-off-by: Andreas Mohr
Cc: Benjamin Herrenschmidt
Cc: Paul Mackerras
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
If you get to that point in the code it means that desc->move_irq is set,
pending_irq_cpumask[irq] and cpu_online_map should have a value. Still
pretty good chance anding those two you'll still have a value. So these
two branch predictors should be inverted.Signed-off-by: Daniel Walker
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
isdn_writebuf_stub() forgets to detect memory allocation and uaccess errors.
And when that's fixed, if a error happens the caller will just keep on
looping.So change the caller to detect the error, and to return it.
Signed-off-by: Jesper Juhl
Cc: Karsten Keil
Signed-off-by: Tilman Schmidt
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Fix leak of `rcvmsg' in sc_ioctl().
There are two returns in the switch in sc_ioctl (the SCIOCSTART case) that
may leak `rcvmsg'. This patch fixes that by adding a kfree() call at the
beginning of that case.Bug found by the coverity checker as #1098
Eric Sesterhenn send me a patch to fix the leak(s) by adding 2 kfree()
calls before the returns, I changed that into just a single call at the
beginning.Signed-off-by: Jesper Juhl
Cc: Karsten Keil
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
