04 Jan, 2008
5 commits
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This replaces some macros and code, which do the same thing as DIV_ROUND_UP
defined in kernel.h, to use the DIV_ROUND_UP macro.Signed-off-by: Shaun Zinck
Signed-off-by: Dave Kleikamp -
Signed-off-by: Jack Stone
Signed-off-by: Dave Kleikamp -
JFS is missing a memory barrier needed to close the critical section before
clearing the lock bit. Use lock bitops for this.unlock_page() has a second barrier after clearing the lock, which is
required because it checks whether the waitqueue is active without locks.
Such a barrier is not required here because the waitqueue spinlock is
always taken (something to think about if performance is an issue).Signed-off-by: Nick Piggin
Signed-off-by: Dave Kleikamp -
This patch makes sure that data that we tried to flush before the journal
was completely written actually gets pushed to disk.To avoid duplicating code, moved common code to write_special_inodes().
Signed-off-by: Dave Kleikamp
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When JFS decides to drop a dirty metapage, it simply clears the META_dirty
bit and leave alone the PG_dirty and PAGECACHE_TAG_DIRTY bits.When such no-write page goes to metapage_writepage(), the `relic'
PAGECACHE_TAG_DIRTY tag should be cleared, to prevent pdflush from
repeatedly trying to sync them. This is done through
set_page_writeback(), so call it should be called in all cases. If
no I/O is initiated, end_page_writeback() should be called immediately.This is how __block_write_full_page() does things.
Signed-off-by: Dave Kleikamp
CC: Fengguang Wu
03 Jan, 2008
5 commits
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The previous commit missed one use of "may_attach()" that had been
renamed to __ptrace_may_attach(). Tssk, tssk, Al.Signed-off-by: Linus Torvalds
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Contents of /proc/*/maps is sensitive and may become sensitive after
open() (e.g. if target originally shares our ->mm and later does exec
on suid-root binary).Check at read() (actually, ->start() of iterator) time that mm_struct
we'd grabbed and locked is
- still the ->mm of target
- equal to reader's ->mm or the target is ptracable by reader.Signed-off-by: Al Viro
Acked-by: Rik van Riel
Signed-off-by: Linus Torvalds -
This reverts commit 6f5391c283d7fdcf24bf40786ea79061919d1e1d ("[SCSI]
Get rid of scsi_cmnd->done") that was supposed to be a cleanup commit,
but apparently it causes regressions:Bug 9370 - v2.6.24-rc2-409-g9418d5d: attempt to access beyond end of device
http://bugzilla.kernel.org/show_bug.cgi?id=9370this patch should be reintroduced in a more split-up form to make
testing of it easier.Signed-off-by: Ingo Molnar
Acked-by: Matthew Wilcox
Cc: James Bottomley
Signed-off-by: Linus Torvalds -
Both SLUB and SLAB really did almost exactly the same thing for
/proc/slabinfo setup, using duplicate code and per-allocator #ifdef's.This just creates a common CONFIG_SLABINFO that is enabled by both SLUB
and SLAB, and shares all the setup code. Maybe SLOB will want this some
day too.Reviewed-by: Pekka Enberg
Signed-off-by: Linus Torvalds -
We need to register slabinfo to procfs when CONFIG_SLUB is enabled to
make the file actually visible to user-space.Signed-off-by: Pekka Enberg
Acked-by: Ingo Molnar
Signed-off-by: Linus Torvalds
02 Jan, 2008
8 commits
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* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc:
[POWERPC] Fix build failure on Cell when CONFIG_SPU_FS=y -
Commit aed3a8c9bb1a8623a618232087c5ff62718e3b9a introduced a
definition of notify_spus_active in .../cell/spu_syscalls.c, and
another definition under #ifndef MODULE in .../cell/spufs/sched.c.
The latter is not necessary and causes the build to fail when
CONFIG_SPU_FS=y, so this removes it. It also removes the export
of do_notify_spus_active, which is unnecessary.Signed-off-by: Paul Mackerras
Acked-by: Arnd Bergmann
Acked-by: Jeremy Kerr -
* git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86:
x86: fix asm-x86/msr.h for user-space export
x86: fix asm-x86/byteorder.h for userspace export -
* 'for-linus' of git://git.o-hand.com/linux-rpurdie-leds:
leds: Fix locomo LED driver oops
leds: Fix leds_list_lock locking issues -
This adds a read-only /proc/slabinfo file on SLUB, that makes slabtop work.
[ mingo@elte.hu: build fix. ]
Cc: Andi Kleen
Cc: Christoph Lameter
Cc: Peter Zijlstra
Signed-off-by: Pekka Enberg
Signed-off-by: Ingo Molnar
Signed-off-by: Linus Torvalds -
After 17d57a9206b4de6ad082ac9f2d2346985abbd2aa ("x86: fix x86-32 early
fixmap initialization.") removing lg.ko caused a printk from vunmap:mm/memory.c:115: bad pgd 004b3027.
On the second use after module load, the kernel crashes.
This fixes the immediate problem (accessed and dirty bits not set as
expected in pmd_none_or_clear_bad). I can't see why this would cause
a crash, but I haven't been able to reproduce it once this is applied.Signed-off-by: Rusty Russell
Signed-off-by: Linus Torvalds -
Use __asm__ and __volatile__ in code that is exported to userspace. Wrap
kernel functions with __KERNEL__ so they get scrubbed.No code changed:
text data bss dec hex filename
9681036 1698924 3407872 14787832 e1a4f8 vmlinux.before
9681036 1698924 3407872 14787832 e1a4f8 vmlinux.afterSigned-off-by: Mike Frysinger
Signed-off-by: Ingo Molnar
Signed-off-by: Thomas Gleixner -
Since asm-x86/byteorder.h is exported to userspace, use __asm__ rather than
asm in its code.Signed-Off-By: Mike Frysinger
Signed-off-by: Ingo Molnar
Signed-off-by: Thomas Gleixner
01 Jan, 2008
2 commits
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Fix locomo-leds to use the correct struct device to prevent an oops.
Signed-off-by: Richard Purdie
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Covert leds_list_lock to a rw_sempahore to match previous LED trigger
locking fixes, fixing lock ordering.Signed-off-by: Richard Purdie
30 Dec, 2007
3 commits
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* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
[SERIAL]: Fix section mismatches in Sun serial console drivers. -
Because of workqueue delay, the put_device could be called before
device_del, so move it to del_conn.Signed-off-by: Dave Young
Signed-off-by: David S. Miller -
When a delayed ACK representing two packets arrives, there are two RTT
samples available, one for each packet. The first (in order of seq
number) will be artificially long due to the delay waiting for the
second packet, the second will trigger the ACK and so will not itself
be delayed.According to rfc1323, the SRTT used for RTO calculation should use the
first rtt, so receivers echo the timestamp from the first packet in
the delayed ack. For congestion control however, it seems measuring
delayed ack delay is not desirable as it varies independently of
congestion.The patch below causes seq_rtt and last_ackt to be updated with any
available later packet rtts which should have less (and hopefully
zero) delack delay. The rtt value then gets passed to
ca_ops->pkts_acked().Where TCP_CONG_RTT_STAMP was set, effort was made to supress RTTs from
within a TSO chunk (!fully_acked), using only the final ACK (which
includes any TSO delay) to generate RTTs. This patch removes these
checks so RTTs are passed for each ACK to ca_ops->pkts_acked().For non-delay based congestion control (cubic, h-tcp), rtt is
sometimes used for rtt-scaling. In shortening the RTT, this may make
them a little less aggressive. Delay-based schemes (eg vegas, veno,
illinois) should get a cleaner, more accurate congestion signal,
particularly for small cwnds. The congestion control module can
potentially also filter out bad RTTs due to the delayed ack alarm by
looking at the associated cnt which (where delayed acking is in use)
should probably be 1 if the alarm went off or greater if the ACK was
triggered by a packet.Signed-off-by: Gavin McCullagh
Acked-by: Ilpo Järvinen
Signed-off-by: David S. Miller
29 Dec, 2007
3 commits
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We're exporting an __init function, oops :-)
The core issue here is that add_preferred_console() is marked
as __init, this makes it impossible to invoke this thing from
a driver probe routine which is what the Sparc serial drivers
need to do.There is no harm in dropping the __init marker. This code will
actually work properly when invoked from a modular driver,
except that init will probably not pick up the console change
without some other support code.Then we can drop the __init from sunserial_console_match()
and we're no longer exporting an __init function to modules.Signed-off-by: David S. Miller
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David Brownell pointed out a regression in my recent "Fix ip command
line processing" patch. It turns out to be a fairly blatant oversight on
my part whereby ic_enable is never set, and thus autoconfiguration is
never enabled. Clearly my testing was broken :-(The solution that I have is to set ic_enable to 1 if we hit
ip_auto_config_setup(), which basically means that autoconfiguration is
activated unless told otherwise. I then flip ic_enable to 0 if ip=off,
ip=none, ip=::::::off or ip=::::::none using ic_proto_name();The incremental patch is below, let me know if a non-incremental version
is prepared, as I did as for the original patch to be reverted pending a
fix.Signed-off-by: Simon Horman
Signed-off-by: David S. Miller -
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc:
[POWERPC] PS3: Fix printing of os-area magic numbers
[POWERPC] Oprofile: Remove dependency on spufs module
28 Dec, 2007
5 commits
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* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
[CRYPTO] padlock: Fix spurious ECB page fault -
It appears that some PCI-E bridges do the wrong thing in the presense of
CRS Software Visibility and MMCONFIG. In particular, it looks like an
ATI bridge (device ID 7936) will return 0001 in the vendor ID field of
any bridged devices indefinitely.Not enabling CRS SV avoids the problem, and as we currently do not
really make good use of the feature anyway (we just time out rather than
do any threaded discovery as suggested by the CRS specs), we're better
off just not enabling it.This should fix a slew of problem reports with random devices (generally
graphics adapters or fairly high-performance networking cards, since it
only affected PCI-E) not getting properly recognized on these AMD systems.If we really want to use CRS-SV, we may end up eventually needing a
whitelist of systems where this should be enabled, along with some kind
of "pcibios_enable_crs()" query to call the system-specific code.Suggested-by: Loic Prylli
Tested-by: Kai Ruhnau
Cc: Matthew Wilcox
Cc: Greg Kroah-Hartman
Signed-off-by: Linus Torvalds -
Fix a bug in the printing of the os-area magic numbers which assumed
that magic numbers were zero terminated strings. The magic numbers
are represented in memory as integers. If the os-area sections are
not initialized correctly they could contained random data that would
be printed to the display. Also unify the handling of header and db
magic numbers and make both of type array of u8.Signed-off-by: Geoff Levand
Signed-off-by: Paul Mackerras -
This removes an OProfile dependency on the spufs module. This
dependency was causing a problem for multiplatform systems that are
built with support for Oprofile on Cell but try to load the oprofile
module on a non-Cell system.Signed-off-by: Bob Nelson
Signed-off-by: Arnd Bergmann
Acked-by: Jeremy Kerr
Signed-off-by: Paul Mackerras -
The xcryptecb instruction always processes an even number of blocks so
we need to ensure th existence of an extra block if we have to process
an odd number of blocks.Signed-off-by: Herbert Xu
27 Dec, 2007
9 commits
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* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6:
[IPV4]: Fix ip command line processing.
[VETH]: move veth.h to include/linux
[NET] tc_nat: header install
[TUNTAP]: Fix wrong debug message.
[NETFILTER]: nf_conntrack_ipv4: fix module parameter compatibility
mac80211: warn when receiving frames with unaligned data
mac80211: round station cleanup timer -
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
[SPARC64]: Implement pci_resource_to_user() -
Did not fix the reported issue. Apart from other weirdness this causes a
bad link between the TLB flushing logic and the quicklists. If there is
indeed an issue that an arch needs a tlb flush before free then the arch
code needs to set tlb->need_flush before calling quicklist_free.Signed-off-by: Christoph Lameter
Signed-off-by: Linus Torvalds -
Recently the documentation in Documentation/nfsroot.txt was
update to note that in fact ip=off and ip=::::::off as the
latter is ignored and the default (on) is used.This was certainly a step in the direction of reducing confusion.
But it seems to me that the code ought to be fixed up so that
ip=::::::off actually turns off ip autoconfiguration.This patch also notes more specifically that ip=on (aka ip=::::::on)
is the default.Signed-off-by: Simon Horman
Signed-off-by: David S. Miller -
Move veth.h from net/ to linux/ since it is a user api, and add it to
user header processing Kbuild.[ Use header-y as suggested by Sam Ravnborg. -DaveM ]
Signed-off-by: Stephen Hemminger
Signed-off-by: David S. Miller -
iproute2 build needs tc_nat.h header from kernel make install_headers.
Signed-off-by: Stephen Hemminger
Signed-off-by: David S. Miller -
This is a trivial fix of debug message.
When a persist flag is set, the message should say "enabled".Signed-off-by: Toyo Abe
Signed-off-by: David S. Miller -
Some users do "modprobe ip_conntrack hashsize=...". Since we have the
module aliases this loads nf_conntrack_ipv4 and nf_conntrack, the
hashsize parameter is unknown for nf_conntrack_ipv4 however and makes
it fail.Allow to specify hashsize= for both nf_conntrack and nf_conntrack_ipv4.
Note: the nf_conntrack message in the ringbuffer will display an
incorrect hashsize since nf_conntrack is first pulled in as a
dependency and calculates the size itself, then it gets changed
through a call to nf_conntrack_set_hashsize().Signed-off-by: Patrick McHardy
Signed-off-by: David S. Miller -
This patch makes mac80211 warn (once) when the driver passes up a
frame in which the payload data is not aligned on a four-byte
boundary, with a long comment for people who run into the condition
and need to know what to do.Signed-off-by: Johannes Berg
Signed-off-by: John W. Linville
