03 Apr, 2009
31 commits
-
Reformat ext3/ioctl.c to make it look more like ext4/ioctl.c and remove
the BKL around ext3_ioctl().Signed-off-by: Cyrus Massoumi
Cc:
Acked-by: Jan Kara
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
- Error code from kthread_run() is now returned in pnpbios_thread_init()
- Remove variable which always was 0.
Signed-off-by: Erik Ekman
Cc: Bjorn Helgaas
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
drivers/pnp/pnpbios/core.c: In function 'pnpbios_thread_init':
drivers/pnp/pnpbios/core.c:578: warning: unused variable 'task'Signed-off-by: Erik Ekman
Cc: Bjorn Helgaas
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Change spi-gpio so that it is possible to drive SPI communications over
GPIO without the need for a chipselect signal.This is useful in very small setups where there's only one slave device
on the bus.This patch does not affect existing setups.
I use this for a tiny communication channel between an embedded device and
a microcontroller. There are not enough GPIOs available for chipselect
and it's not needed anyway in this case.Signed-off-by: Michael Buesch
Cc: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
We want to phase out the GPIO "autorequest" mechanism in gpiolib and
require all callers to use gpio_request().- Update feature-removal-schedule
- Update the documentation now
- Convert the relevant pr_warning() in gpiolib to a WARN()
so folk using this mechanism get a noisy stack dumpSome drivers and board init code will probably need to change.
Implementations not using gpiolib will still be fine; they are already
required to implement gpio_{request,free}() stubs.Signed-off-by: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Allow GPIOs in GPIOLIB chips to be named. This name is then used when the
GPIO is exported to sysfs, although it could be used elsewhere if deemed
useful.Signed-off-by: Daniel Silverstone
Cc: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Compared to the other supported chips, the m41t62 uses a different
register to set the square wave frequency.Signed-off-by: Daniel Glockner
Cc: Chris Zankel
Cc: David Brownell
Cc: Alessandro Zummo
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The v3020 RTC can be connected to GPIOs as well as to memory-like
interface. Add ability to use GPIO bit-bang for v3020 read-write access.[akpm@linux-foundation.org: fix off-by-one in error path]
Signed-off-by: Mike Rapoport
Acked-by: Alessandro Zummo
Cc: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
initramfs uses printk without a linefeed, then does some work, then uses
printk to finish the message off. However if some other code does a
printk in between, then the messages get mixed together. Better for each
message to be an independent line...Example of problem that this fixes:
checking if image is initramfs...Switched to high resolution mode on CPU 1
Switched to high resolution mode on CPU 0
it isSigned-off-by: Simon Kitching
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
First argument unused since 2.3.11.
[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Alexey Dobriyan
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
- Define new setup() hook to export the accessor
- Implement accessor methodsMoves some error checking out of the sysfs interface code into the layer
below it, which is now shared by both sysfs and memory access code.Signed-off-by: David Brownell
Signed-off-by: Kevin Hilman
Cc: Jean Delvare
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
In the case of at24, the platform code registers a 'setup' callback with
the at24_platform_data. When the at24 driver detects an EEPROM, it fills
out the read and write functions of the memory_accessor and calls the
setup callback passing the memory_accessor struct. The platform code can
then use the read/write functions in the memory_accessor struct for
reading and writing the EEPROM.Signed-off-by: Kevin Hilman
Cc: David Brownell
Cc: Jean Delvare
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add an interface by which other kernel code can read/write persistent
memory such as I2C or SPI EEPROMs, or devices which provide NVRAM. Use
cases include storage of board-specific configuration data like Ethernet
addresses and sensor calibrations.Original idea, review and improvement suggestions by David Brownell.
Acked-by: David Brownell
Signed-off-by: Kevin Hilman
Cc: Jean Delvare
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
It is a fairly common operation to have a pointer to a work and to need a
pointer to the delayed work it is contained in. In particular, all
delayed works which want to rearm themselves will have to do that. So it
would seem fair to offer a helper function for this operation.[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Jean Delvare
Acked-by: Ingo Molnar
Cc: "David S. Miller"
Cc: Herbert Xu
Cc: Benjamin Herrenschmidt
Cc: Martin Schwidefsky
Cc: Greg KH
Cc: Pekka Enberg
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Fix the following warnings:
arch/um/kernel/syscall.c: In function 'kernel_execve':
arch/um/kernel/syscall.c:130: warning: passing argument 1 of 'um_execve' discards qualifiers from pointer target type
arch/um/kernel/syscall.c:130: warning: passing argument 2 of 'um_execve' discards qualifiers from pointer target type
arch/um/kernel/syscall.c:130: warning: passing argument 3 of 'um_execve' discards qualifiers from pointer target typeSigned-off-by: Miklos Szeredi
Cc: Jeff Dike
Cc: WANG Cong
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Fix the following link error:
arch/um/sys-i386/built-in.o: In function `sys_call_table':
(.rodata+0x11c): undefined reference to `ptregs_fork'
arch/um/sys-i386/built-in.o: In function `sys_call_table':
(.rodata+0x140): undefined reference to `ptregs_execve'
arch/um/sys-i386/built-in.o: In function `sys_call_table':
(.rodata+0x2cc): undefined reference to `ptregs_iopl'
arch/um/sys-i386/built-in.o: In function `sys_call_table':
(.rodata+0x2d8): undefined reference to `ptregs_vm86old'
arch/um/sys-i386/built-in.o: In function `sys_call_table':
(.rodata+0x2f0): undefined reference to `ptregs_sigreturn'
arch/um/sys-i386/built-in.o: In function `sys_call_table':
(.rodata+0x2f4): undefined reference to `ptregs_clone'
arch/um/sys-i386/built-in.o: In function `sys_call_table':
(.rodata+0x3ac): undefined reference to `ptregs_vm86'
arch/um/sys-i386/built-in.o: In function `sys_call_table':
(.rodata+0x3c8): undefined reference to `ptregs_rt_sigreturn'
arch/um/sys-i386/built-in.o: In function `sys_call_table':
(.rodata+0x3fc): undefined reference to `ptregs_sigaltstack'
arch/um/sys-i386/built-in.o: In function `sys_call_table':
(.rodata+0x40c): undefined reference to `ptregs_vfork'This was introduced by commit 253f29a4, "x86: pass in pt_regs pointer
for syscalls that need it"Signed-off-by: Miklos Szeredi
Cc: Brian Gerst
Cc: Tejun Heo
Cc: Ingo Molnar
Cc: Jeff Dike
Reviewed-by: WANG Cong
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Fix the following compile error:
arch/um/drivers/net_kern.c: In function 'uml_inetaddr_event':
arch/um/drivers/net_kern.c:760: error: 'struct net_device' has no member named 'open'This was introduced by commit 8bb95b39, "uml: convert network device
to netdevice ops".Signed-off-by: Miklos Szeredi
Cc: Stephen Hemminger
Cc: David S. Miller
Cc: Jeff Dike
Reviewed-by: WANG Cong
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The missing device table means that the floppy module is not auto-loaded,
even when the appropriate PNP device (0700) is found.We don't actually use the table in the module, since the device doesn't
have a struct pnp_driver, but it's sufficient to cause an alias in the
module that udev/modprobe will use.Signed-off-by: Scott James Remnant
Signed-off-by: Tim Gardner
Cc: Bjorn Helgaas
Cc: Philippe De Muyter
Acked-by: Kay Sievers
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Check bh->b_blocknr only if BH_Mapped is set.
akpm: I doubt if b_blocknr is ever uninitialised here, but it could
conceivably cause a problem if we're doing a lookup for block zero.Signed-off-by: Nikanth Karthikesan
Cc: Nick Piggin
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
A new "address_space flag"--AS_MM_ALL_LOCKS--was defined to use the next
available AS flag while the Unevictable LRU was under development. The
Unevictable LRU was using the same flag and "no one" noticed. Current
mainline, since 2.6.28, has same value for two symbolic flag names.So, define a unique flag value for AS_UNEVICTABLE--up close to the other
flags, [at the cost of an additional #ifdef] so we'll notice next time.
Note that #ifdef is not actually required, if we don't mind having the
unused flag value defined.Replace #defines with an enum.
Signed-off-by: Lee Schermerhorn
Cc: [2.6.28.x, 2.6.29.x]
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Include fiemap.h in header-y; it defines the interface for the
FS_IOC_FIEMAP file mapping ioctl.Signed-off-by: Eric Sandeen
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add a MAINTAINERS entry for the hypervisor virtual console driver.
Signed-off-by: Michael Ellerman
Acked-by: Josh Boyer
Cc: Josh Boyer
Cc: Benjamin Herrenschmidt
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The calculation of the value nr in do_xip_mapping_read is incorrect. If
the copy required more than one iteration in the do while loop the copies
variable will be non-zero. The maximum length that may be passed to the
call to copy_to_user(buf+copied, xip_mem+offset, nr) is len-copied but the
check only compares against (nr > len).This bug is the cause for the heap corruption Carsten has been chasing
for so long:*** glibc detected *** /bin/bash: free(): invalid next size (normal): 0x00000000800e39f0 ***
======= Backtrace: =========
/lib64/libc.so.6[0x200000b9b44]
/lib64/libc.so.6(cfree+0x8e)[0x200000bdade]
/bin/bash(free_buffered_stream+0x32)[0x80050e4e]
/bin/bash(close_buffered_stream+0x1c)[0x80050ea4]
/bin/bash(unset_bash_input+0x2a)[0x8001c366]
/bin/bash(make_child+0x1d4)[0x8004115c]
/bin/bash[0x8002fc3c]
/bin/bash(execute_command_internal+0x656)[0x8003048e]
/bin/bash(execute_command+0x5e)[0x80031e1e]
/bin/bash(execute_command_internal+0x79a)[0x800305d2]
/bin/bash(execute_command+0x5e)[0x80031e1e]
/bin/bash(reader_loop+0x270)[0x8001efe0]
/bin/bash(main+0x1328)[0x8001e960]
/lib64/libc.so.6(__libc_start_main+0x100)[0x200000592a8]
/bin/bash(clearerr+0x5e)[0x8001c092]With this bug fix the commit 0e4a9b59282914fe057ab17027f55123964bc2e2
"ext2/xip: refuse to change xip flag during remount with busy inodes" can
be removed again.Cc: Carsten Otte
Cc: Nick Piggin
Cc: Jared Hulbert
Cc:
Signed-off-by: Martin Schwidefsky
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Align rekey_work. Even though it's infrequent, we may as well line it up.
Signed-off-by: Anton Blanchard
Acked-by: Matt Mackall
Cc: Theodore Ts'o
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Even though vmstat_work is marked deferrable, there are still benefits to
aligning it. For certain applications we want to keep OS jitter as low as
possible and aligning timers and work so they occur together can reduce
their overall impact.Signed-off-by: Anton Blanchard
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The dirtied_when value on an inode is supposed to represent the first time
that an inode has one of its pages dirtied. This value is in units of
jiffies. It's used in several places in the writeback code to determine
when to write out an inode.The problem is that these checks assume that dirtied_when is updated
periodically. If an inode is continuously being used for I/O it can be
persistently marked as dirty and will continue to age. Once the time
compared to is greater than or equal to half the maximum of the jiffies
type, the logic of the time_*() macros inverts and the opposite of what is
needed is returned. On 32-bit architectures that's just under 25 days
(assuming HZ == 1000).As the least-recently dirtied inode, it'll end up being the first one that
pdflush will try to write out. sync_sb_inodes does this check:/* Was this inode dirtied after sync_sb_inodes was called? */
if (time_after(inode->dirtied_when, start))
break;...but now dirtied_when appears to be in the future. sync_sb_inodes bails
out without attempting to write any dirty inodes. When this occurs,
pdflush will stop writing out inodes for this superblock. Nothing can
unwedge it until jiffies moves out of the problematic window.This patch fixes this problem by changing the checks against dirtied_when
to also check whether it appears to be in the future. If it does, then we
consider the value to be far in the past.This should shrink the problematic window of time to such a small period
(30s) as not to matter.Signed-off-by: Jeff Layton
Signed-off-by: Wu Fengguang
Acked-by: Ian Kent
Cc: Jens Axboe
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
filp->f_flags is unsigned, so use that type for the local copy.
Cc: Alan Cox
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
clear_inode() will switch inode state from I_FREEING to I_CLEAR, and do so
_outside_ of inode_lock. So any I_FREEING testing is incomplete without a
coupled testing of I_CLEAR.So add I_CLEAR tests to drop_pagecache_sb(), generic_sync_sb_inodes() and
add_dquot_ref().Masayoshi MIZUMA discovered the bug in drop_pagecache_sb() and Jan Kara
reminds fixing the other two cases.Masayoshi MIZUMA has a nice panic flow:
=====================================================================
[process A] | [process B]
| |
| prune_icache() | drop_pagecache()
| spin_lock(&inode_lock) | drop_pagecache_sb()
| inode->i_state |= I_FREEING; | |
| spin_unlock(&inode_lock) | V
| | | spin_lock(&inode_lock)
| V | |
| dispose_list() | |
| list_del() | |
| clear_inode() | |
| inode->i_state = I_CLEAR | |
| | | V
| | | if (inode->i_state & (I_FREEING|I_WILL_FREE))
| | | continue;
Reviewed-by: Jan Kara
Signed-off-by: Wu Fengguang
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Fix a number of issues with the per-MM VMA patch:
(1) Make mmap_pages_allocated an atomic_long_t, just in case this is used on
a NOMMU system with more than 2G pages. Makes no difference on a 32-bit
system.(2) Report vma->vm_pgoff * PAGE_SIZE as a 64-bit value, not a 32-bit value,
lest it overflow.(3) Move the allocation of the vm_area_struct slab back for fork.c.
(4) Use KMEM_CACHE() for both vm_area_struct and vm_region slabs.
(5) Use BUG_ON() rather than if () BUG().
(6) Make the default validate_nommu_regions() a static inline rather than a
#define.(7) Make free_page_series()'s objection to pages with a refcount != 1 more
informative.(8) Adjust the __put_nommu_region() banner comment to indicate that the
semaphore must be held for writing.(9) Limit the number of warnings about munmaps of non-mmapped regions.
Reported-by: Andrew Morton
Signed-off-by: David Howells
Cc: Greg Ungerer
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
nvidiafb recognizes geforcego 7300 chip as mobile
Signed-off-by: Sergey Senozhatsky
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This fixes a build failure with generic debug pagealloc:
mm/debug-pagealloc.c: In function 'set_page_poison':
mm/debug-pagealloc.c:8: error: 'struct page' has no member named 'debug_flags'
mm/debug-pagealloc.c: In function 'clear_page_poison':
mm/debug-pagealloc.c:13: error: 'struct page' has no member named 'debug_flags'
mm/debug-pagealloc.c: In function 'page_poison':
mm/debug-pagealloc.c:18: error: 'struct page' has no member named 'debug_flags'
mm/debug-pagealloc.c: At top level:
mm/debug-pagealloc.c:120: error: redefinition of 'kernel_map_pages'
include/linux/mm.h:1278: error: previous definition of 'kernel_map_pages' was here
mm/debug-pagealloc.c: In function 'kernel_map_pages':
mm/debug-pagealloc.c:122: error: 'debug_pagealloc_enabled' undeclared (first use in this function)by fixing
- debug_flags should be in struct page
- define DEBUG_PAGEALLOC config option for all architecturesSigned-off-by: Akinobu Mita
Reported-by: Alexander Beregalov
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
02 Apr, 2009
9 commits
-
"struct tty_driver *" lies in m->private not in v which is
SEQ_TOKEN_START which is 1 which is enough to trigger NULL dereference
next line:BUG: unable to handle kernel NULL pointer dereference at 000000ad
IP: [] uart_proc_show+0xe/0x2b0Noticed by Linus.
Signed-off-by: Alexey Dobriyan
Signed-off-by: Linus Torvalds -
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6: (29 commits)
[IA64] BUG to BUG_ON changes
[IA64] Fix typo/thinko in arch/ia64/sn/kernel/sn2/sn2_smp.c
ia64: remove some warnings.
ia64/xen: fix the link error.
ia64/pv_ops/bp/xen: implemented binary patchable pv_cpu_ops.
ia64/pv_ops/binary patch: define paravirt_dv_serialize_data() and suppress false positive warning.
ia64/pv_ops/bp/module: support binary patching for kernel module.
ia64/pv_ops: implement binary patching optimization for native.
ia64/pv_op/binarypatch: add helper functions to support binary patching for paravirt_ops.
ia64/pv_ops/xen/gate.S: xen gate page paravirtualization
ia64/pv_ops: paravirtualize gate.S.
ia64/pv_ops: move down __kernel_syscall_via_epc.
ia64/pv_ops/xen: define xen specific gate page.
ia64/pv_ops: gate page paravirtualization.
ia64/pv_ops/xen/pv_time_ops: implement sched_clock.
ia64/pv_ops/pv_time_ops: add sched_clock hook.
ia64/pv_ops/xen: paravirtualize read/write ar.itc and ar.itm
ia64/pv_ops: paravirtualize mov = ar.itc.
ia64/pv_ops/pvchecker: support mov = ar.itc paravirtualization
ia64/pv_ops: paravirtualize fsys.S.
... -
…git/tip/linux-2.6-tip
* 'x86-setup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86, setup: guard against pre-ACPI 3 e820 code not updating %ecx -
Commit 64ef8957986f6a04f61e7c95fa6ffeb3a86a6661 ("qeth: remove EDDP")
removed the qeth_core_offl.[hc] files, but ended up doing so by just
patching them to zero size, rather than removing them properly.Actually remove the files.
Reported-by: Andrew Price
Cc: Frank Blaschka
Cc: David S. Miller
Signed-off-by: Linus Torvalds -
Impact: BIOS bug safety
For pre-ACPI 3 BIOSes, pre-initialize the end of the e820 buffer just
in case the BIOS returns an unchanged %ecx but without actually
touching the ACPI 3 extended flags field.Signed-off-by: H. Peter Anvin
-
* 'x86/setup' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86, setup: ACPI 3, BIOS workaround for E820-probing code
x86, setup: preemptively save/restore edi and ebp around INT 15 E820
x86, setup: mark %esi as clobbered in E820 BIOS call -
* 'for-linus' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6: (58 commits)
SUNRPC: Ensure IPV6_V6ONLY is set on the socket before binding to a port
NSM: Fix unaligned accesses in nsm_init_private()
NFS: Simplify logic to compare socket addresses in client.c
NFS: Start PF_INET6 callback listener only if IPv6 support is available
lockd: Start PF_INET6 listener only if IPv6 support is available
SUNRPC: Remove CONFIG_SUNRPC_REGISTER_V4
SUNRPC: rpcb_register() should handle errors silently
SUNRPC: Simplify kernel RPC service registration
SUNRPC: Simplify svc_unregister()
SUNRPC: Allow callers to pass rpcb_v4_register a NULL address
SUNRPC: rpcbind actually interprets r_owner string
SUNRPC: Clean up address type casts in rpcb_v4_register()
SUNRPC: Don't return EPROTONOSUPPORT in svc_register()'s helpers
SUNRPC: Use IPv4 loopback for registering AF_INET6 kernel RPC services
SUNRPC: Set IPV6ONLY flag on PF_INET6 RPC listener sockets
NFS: Revert creation of IPv6 listeners for lockd and NFSv4 callbacks
SUNRPC: Remove @family argument from svc_create() and svc_create_pooled()
SUNRPC: Change svc_create_xprt() to take a @family argument
SUNRPC: svc_setup_socket() gets protocol family from socket
SUNRPC: Pass a family argument to svc_register()
... -
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (33 commits)
ext4: Regularize mount options
ext4: fix locking typo in mballoc which could cause soft lockup hangs
ext4: fix typo which causes a memory leak on error path
jbd2: Update locking coments
ext4: Rename pa_linear to pa_type
ext4: add checks of block references for non-extent inodes
ext4: Check for an valid i_mode when reading the inode from disk
ext4: Use WRITE_SYNC for commits which are caused by fsync()
ext4: Add auto_da_alloc mount option
ext4: Use struct flex_groups to calculate get_orlov_stats()
ext4: Use atomic_t's in struct flex_groups
ext4: remove /proc tuning knobs
ext4: Add sysfs support
ext4: Track lifetime disk writes
ext4: Fix discard of inode prealloc space with delayed allocation.
ext4: Automatically allocate delay allocated blocks on rename
ext4: Automatically allocate delay allocated blocks on close
ext4: add EXT4_IOC_ALLOC_DA_BLKS ioctl
ext4: Simplify delalloc code by removing mpage_da_writepages()
ext4: Save stack space by removing fake buffer heads
...
