Al Viro [Tue, 30 Jan 2007 13:23:40 +0000 (13:23 +0000)]
[PATCH] fix indentation-related breakage in Kconfig.i386
Kconfig recognizes the end of help text by receding indentation depth.
Recent patch had broken HOST_VMSPLIT_... choice in arch/um/Kconfig.i386 -
all alternatives are interpreted as part of help text now.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
What DMA for 16bit pcmcia card, anyway? We never do request_dma()
there and ->dma_channel never changes since initialization to -1.
IOW, that call is dead code.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Tue, 30 Jan 2007 16:35:12 +0000 (08:35 -0800)]
Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
[MIPS] Fix typo of "CONFIG_MT_SMP".
[MIPS] Ocelot G: Fix a few misspellings of CONFIG_GALILEO_GT64240_ETH
[PATCH] Malta: Fix build if CONFIG_MTD is diabled.
Hugh Dickins [Mon, 29 Jan 2007 21:24:08 +0000 (21:24 +0000)]
[PATCH] mm: mremap correct rmap accounting
Nick Piggin points out that page accounting on MIPS multiple ZERO_PAGEs
is not maintained by its move_pte, and could lead to freeing a ZERO_PAGE.
Instead of complicating that move_pte, just forget the minor optimization
when mremapping, and change the one thing which needed it for correctness
- filemap_xip use ZERO_PAGE(0) throughout instead of according to address.
[ "There is no block device driver one could use for XIP on mips
platforms" - Carsten Otte ]
[PATCH] i386: In assign_irq_vector look at all vectors before giving up
When the world was a simple and static place setting up irqs was easy.
It sufficed to allocate a linux irq number and a find a free cpu
vector we could receive that linux irq on. In those days it was
a safe assumption that any allocated vector was actually in use
so after one global pass through all of the vectors we would have
none left.
These days things are much more dynamic with interrupt controllers
(in the form of MSI or MSI-X) appearing on plug in cards and linux
irqs appearing and disappearing. As these irqs come and go vectors
are allocated and freed, invalidating the ancient assumption that all
allocated vectors stayed in use forever.
So this patch modifies the vector allocator to walk through every
possible vector before giving up, and to check to see if a vector
is in use before assigning it. With these changes we stop leaking
freed vectors and it becomes possible to allocate and free irq vectors
all day long.
This changed was modeled after the vector allocator on x86_64 where
this limitation has already been removed. In essence we don't update
the static variables that hold the position of the last vector we
allocated until have successfully allocated another vector. This
allows us to detect if we have completed one complete scan through
all of the possible vectors.
Acked-by: Auke Kok <auke-jan.h.kok@intel.com> Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Tue, 30 Jan 2007 16:29:05 +0000 (08:29 -0800)]
Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm:
[ARM] 4117/1: S3C2412: Fix writel() usage in selection code
[ARM] 4111/1: Allow VFP to work with thread migration on SMP
[ARM] 4112/1: Only ioremap to supersections if DOMAIN_IO is zero
[ARM] 4106/1: S3C2410: typo fixes in register definitions
[ARM] 4102/1: Allow for PHYS_OFFSET on any valid 2MiB address
[ARM] Fix AMBA serial drivers for non-first serial ports
[ARM] 4100/1: iop3xx: fix cpu mask for iop333
[ARM] Update mach-types
[ARM] Fix show_mem() for discontigmem
[ARM] 4096/1: S3C24XX: change return code form s3c2410_gpio_getcfg()
[ARM] 4095/1: S3C24XX: Fix GPIO set for Bank A
[ARM] 4092/1: i.MX/MX1 CPU Frequency scaling latency definition
[ARM] 4089/1: AT91: GPIO wake IRQ cleanup
[ARM] 4088/1: AT91: Unbalanced IRQ in serial driver suspend/resume
[ARM] 4087/1: AT91: CPU reset for SAM9x processors
[ARM] 4086/1: AT91: Whitespace cleanup
[ARM] 4085/1: AT91: Header fixes.
[ARM] 4084/1: Remove CONFIG_DEBUG_WAITQ
[PATCH] `make help' in build tree doesn't show headers_* targets
`make help' in the build tree doesn't show the help texts about the
`headers_install' and `headers_check' targets because it looks for
include/asm-$(ARCH)/Kbuild in the wrong place.
Add the missing `$(srctree)' prefixes to fix this.
Also move the printing of the default install path for the headers inside the
`if/fi', where it belongs.
During ufs_trunc_direct which is subroutine of ufs::truncate, we try the first
of all free parts of block and then whole blocks. But we calculate size of
block's part to free in the wrong way.
This may cause bad update of used blocks and fragments statistic, and you can
got report that you have free 32T on 1Gb partition.
These series of patches result of UFS1 write support stress testing, like
running fsx-linux, untar and build linux kernel etc
We pass from ufs::get_block_t to levels below: pointer to the current page, to
make possible things like reallocation of blocks on the fly, and we also uses
this pointer for indication, what actually we allocate data block or meta data
block, but currently we make decision about what we allocate on the wrong
level, this may and cause oops if we allocate blocks in some special order.
Miklos Szeredi [Mon, 29 Jan 2007 21:19:54 +0000 (13:19 -0800)]
[PATCH] fuse: fix bug in control filesystem mount
The BUG in fuse_ctl_add_dentry() could be triggered if the control
filesystem was unmounted and mounted again while one or more fuse
filesystems were present.
The fix is to reset the dentry counter in fuse_ctl_kill_sb().
Andrew Morton [Mon, 29 Jan 2007 21:19:50 +0000 (13:19 -0800)]
[PATCH] m68k: uaccess.h needs sched.h
In file included from include/linux/crypto.h:26,
from crypto/cipher.c:17:
include/linux/uaccess.h: In function 'pagefault_disable':
include/linux/uaccess.h:18: error: dereferencing pointer to incomplete type
include/linux/uaccess.h: In function 'pagefault_enable':
include/linux/uaccess.h:33: error: dereferencing pointer to incomplete type
video_buf need PCI.
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Robert P. J. Day [Mon, 29 Jan 2007 21:19:50 +0000 (13:19 -0800)]
[PATCH] Fix "CONFIG_X86_64_" typo in drivers/kvm/svm.c
Fix what looks like an obvious typo in the file drivers/kvm/svm.c.
Signed-off-by: Robert P. J. Day <rpjday@mindspring.com> Acked-by: Avi Kivity <avi@qumranet.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Fix UML hostfs mknod(): userspace has differernt dev_t size and encoding
than kernel, so extract major/minor and reencode using glibc makedev()
macro.
Signed-off-by: Johannes Stezenbach <js@linuxtv.org> Acked-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Cc: Jeff Dike <jdike@addtoit.com> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Serge E. Hallyn [Mon, 29 Jan 2007 21:19:40 +0000 (13:19 -0800)]
[PATCH] namespaces: fix exit race by splitting exit
Fix exit race by splitting the nsproxy putting into two pieces. First
piece reduces the nsproxy refcount. If we dropped the last reference, then
it puts the mnt_ns, and returns the nsproxy as a hint to the caller. Else
it returns NULL. The second piece of exiting task namespaces sets
tsk->nsproxy to NULL, and drops the references to other namespaces and
frees the nsproxy only if an nsproxy was passed in.
A little awkward and should probably be reworked, but hopefully it fixes
the NFS oops.
Signed-off-by: Serge E. Hallyn <serue@us.ibm.com> Cc: Herbert Poetzl <herbert@13thfloor.at> Cc: Oleg Nesterov <oleg@tv-sign.ru> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Cedric Le Goater <clg@fr.ibm.com> Cc: Daniel Hokka Zakrisson <daniel@hozac.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andy Gospodarek [Mon, 29 Jan 2007 20:08:38 +0000 (12:08 -0800)]
bonding: ARP monitoring broken on x86_64
While working with the latest bonding code I noticed a nasty problem that
will prevent arp monitoring from always functioning correctly on x86_64
systems. Comparing ints to longs and expecting reliable results on x86_64
is a bad idea. With this patch, arp monitoring works correctly again.
Signed-off-by: Andy Gospodarek <andy@greyhouse.net> Cc: "David S. Miller" <davem@davemloft.net> Cc: Stephen Hemminger <shemminger@osdl.org> Cc: Jeff Garzik <jeff@garzik.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
Andrew Morton [Sat, 27 Jan 2007 08:00:04 +0000 (00:00 -0800)]
82596 warning fixes
drivers/net/82596.c: In function 'i596_start_xmit':
drivers/net/82596.c:1069: warning: cast from pointer to integer of different size
drivers/net/82596.c: In function 'i82596_probe':
drivers/net/82596.c:1249: warning: format '%d' expects type 'int', but argument 4 has type 'long unsigned int'
Cc: Jeff Garzik <jeff@garzik.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
Vitaly Bordug [Sat, 27 Jan 2007 08:00:04 +0000 (00:00 -0800)]
FS_ENET: OF-related fixup for FEC and SCC MAC's
Updated direct resource pass with ioremap call, make it grant proper IRQ
mapping, stuff incompatible with the new approach were respectively put
under #ifndef CONFIG_PPC_MERGE. It is required so that both ppc and
powerpc could utilize fs_enet effectively.
Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
The b44 chip occasionally needs to be reset when ISTAT_ERRORS are
encountered. The reset sequence includes a PHY reset that will take many
seconds to complete and cause the link to go down and up. By skipping the
PHY reset, it will greatly reduce the interruption when ISTAT_ERRORS are
encountered.
Change the full_reset parameter to reset_kind parameter in b44_init_hw().
This will allow PHY reset to be skipped when ISTAT_ERRORS are encountered.
Signed-off-by: Michael Chan <mchan@broadcom.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
Mike Christie [Tue, 30 Jan 2007 02:18:38 +0000 (21:18 -0500)]
[PATCH] Fix SG_IO timeout jiffy conversion
Commit 85e04e371b5a321b5df2bc3f8e0099a64fb087d7 cleaned up the timeout
conversion, but did it exactly the wrong way. We get msecs from user
space, and should convert them into jiffies. Not the other way around.
Here is a fix with the overflow check sg.c has added in. This fixes DVD
burnign with Nero.
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
[ "you'll be wanting a comma there" - Andrew ] Cc: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Tue, 30 Jan 2007 00:37:38 +0000 (16:37 -0800)]
Fix balance_dirty_page() calculations with CONFIG_HIGHMEM
This makes balance_dirty_page() always base its calculations on the
amount of non-highmem memory in the machine, rather than try to base it
on total memory and then falling back on non-highmem memory if the
mapping it was writing wasn't highmem capable.
This not only fixes a situation where two different writers can have
wildly different notions about what is a "balanced" dirty state, but it
also means that people with highmem machines don't run into an OOM
situation when regular memory fills up with dirty pages.
We used to try to handle the latter case by scaling down the dirty_ratio
if the machine had a lot of highmem pages in page_writeback_init(), but
it wasn't aggressive enough for some situations, and since basing the
dirty ratio on highmem memory was broken in the first place, let's just
stop doing so.
(A variation of this theme fixed Justin Piszcz's OOM problem when
copying an 18GB file on a RAID setup).
Acked-by: Nick Piggin <nickpiggin@yahoo.com.au> Cc: Justin Piszcz <jpiszcz@lucidpixels.com> Cc: Andrew Morton <akpm@osdl.org> Cc: Neil Brown <neilb@suse.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: Randy Dunlap <rdunlap@xenotime.net> Cc: Christoph Lameter <clameter@sgi.com> Cc: Jens Axboe <jens.axboe@oracle.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Adrian Bunk <bunk@stusta.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Takashi Iwai [Fri, 26 Jan 2007 11:40:31 +0000 (12:40 +0100)]
[PATCH] ALSA: Fix sysfs breakage
The recent change for a new sysfs tree with card* object breaks the
/sys/class/sound tree if CONFIG_SYSFS_DEPRECATED is enabled.
The device in each entry doesn't point the correct device object:
Also, this change breaks some drivers (like sound/arm/*) referring
card->dev directly to obtain the device object for memory handling.
This patch reverts the semantics of card->dev to the former version,
which points to a real device object. The card* object is stored in a
new card->card_dev field, instead. The device parent is chosen either
card->dev or card->card_dev according to CONFIG_SYSFS_DEPRECATED to
keep the tree compatibility.
Also, card* isn't created if CONFIG_SYSFS_DEPRECATED is enabled. The
reason of card* object is a root of all beloing devices, and it makes
little sense if each sound device points to the real device object
directly.
A stupid bug has been plaguing the sys_pciconfig_iobase on ppc64. It wasn't
noticed until recently as it seems to not affect G5s but it's been causing
problems running X servers on some other machines recently. The bus number
matching was bogus.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
When main table is just a single leaf this gets printed as belonging to the
local table in /proc/net/fib_trie. A fix is below.
Signed-off-by: Robert Olsson <robert.olsson@its.uu.se> Acked-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Sat, 27 Jan 2007 02:48:16 +0000 (18:48 -0800)]
[SPARC64]: Set g4/g5 properly in sun4v dtlb-prot handling.
Mirror the logic in the sun4u handler, we have to update
both registers even when we branch out to window fault
fixup handling.
The way it works is that if we are in etrap processing a
fault already, g4/g5 holds the original fault information.
If we take a window spill fault while doing etrap, then
we put the window spill fault info into g4/g5 and this is
what the top-level fault handler ends up processing first.
Then we retry the originally faulting instruction, and
process the original fault at that time.
This is all necessary because of how constrained the trap
registers are in these code paths. These cases trigger
very rarely, so even if there is some performance implication
it's doesn't happen very often. In fact the rarity is why
it took so long to trigger and find this particular bug.
Signed-off-by: David S. Miller <davem@davemloft.net>
* master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6:
[NETFILTER]: nf_conntrack_pptp: fix NAT setup of expected GRE connections
[NETFILTER]: nf_nat_pptp: fix expectation removal
[NETFILTER]: nf_nat: fix ICMP translation with statically linked conntrack
[TCP]: Restore SKB socket owner setting in tcp_transmit_skb().
[AF_PACKET]: Check device down state before hard header callbacks.
[DECNET]: Handle a failure in neigh_parms_alloc (take 2)
[BNX2]: Fix 2nd port's MAC address.
[TCP]: Fix sorting of SACK blocks.
[AF_PACKET]: Fix BPF handling.
[IPV4]: Fix the fib trie iterator to work with a single entry routing tables
Linus Torvalds [Fri, 26 Jan 2007 22:45:18 +0000 (14:45 -0800)]
Merge branch 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev
* 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev:
Fix Maple PATA IRQ assignment.
ahci: use 0x80 as wait stat value instead of 0xff
sata_via: style clean up, no indirect method call in LLD
ahci: fix endianness in spurious interrupt message
libata-sff: Don't call bmdma_stop on non DMA capable controllers
libata: implement ATA_FLAG_IGN_SIMPLEX and use it in sata_uli
ahci: improve and limit spurious interrupt messages, take#3
sata_via: don't diddle with ATA_NIEN in ->freeze
libata: set_mode, Fix the FIXME
libata hpt3xn: Hopefully sort out the DPLL logic versus the vendor code
libata cmd64x: whack into a shape that looks like the documentation
David Woodhouse [Mon, 1 Jan 2007 19:31:15 +0000 (19:31 +0000)]
Fix Maple PATA IRQ assignment.
On the Maple board, the AMD8111 IDE is in legacy mode... except that it
appears on IRQ 20 instead of IRQ 15. For drivers/ide this was handled by
the architecture's "pci_get_legacy_ide_irq()" function, but in libata we
just hard-code the numbers 14 and 15.
This patch provides asm-powerpc/libata-portmap.h which maps the IRQ as
appropriate, having added a pci_dev argument to the
ATA_{PRIM,SECOND}ARY_IRQ macros.
There's probably a better way to do this -- especially if we observe
that the _only_ case in which this seemingly-generic
"pci_get_legacy_ide_irq()" function returns anything other than 14 and
15 for primary and secondary respectively is the case of the AMD8111 on
the Maple board -- couldn't we handle that with a special case in the
pata_amd driver, or perhaps with a PCI quirk for Maple to switch it into
native mode during early boot and assign resources properly?
Signed-off-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
Tejun Heo [Fri, 26 Jan 2007 06:37:20 +0000 (15:37 +0900)]
ahci: use 0x80 as wait stat value instead of 0xff
Before hardreset, ahci initialized stat part of received FIS area to
0xff to wait for the first D2H Reg FIS which would change the value to
device ready state. This used to work but now libata considers status
value of 0xff as device not present making this wait prone to failure.
This patch makes ahci use 0x80 for the wait stat value instead of
0xff to fix the above problem.
Matt Domsch [Fri, 26 Jan 2007 08:57:18 +0000 (00:57 -0800)]
[PATCH] Fix race in efi variable delete code
Fix race when deleting an EFI variable and issuing another EFI command on
the same variable. The removal of the variable from the efivars_list
should be done in efivar_delete and not delayed until the kobject release.
Furthermore, remove the item from the list at module unload time, and use
list_for_each_entry_safe() rather than list_for_each_safe() for
readability.
Tested on ia64.
Signed-off-by: Prarit Bhargava <prarit@redhat.com> Signed-off-by: Matt Domsch <Matt_Domsch@dell.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Alexey Dobriyan [Fri, 26 Jan 2007 08:57:16 +0000 (00:57 -0800)]
[PATCH] core-dumping unreadable binaries via PT_INTERP
Proposed patch to fix #5 in
http://www.isec.pl/vulnerabilities/isec-0017-binfmt_elf.txt
aka
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2004-1073
To reproduce, do
* grab poc at the end of advisory.
* add line "eph.p_memsz = 4096;" after "eph.p_filesz = 4096;"
where first "4096" is something equal to or greater than 4096.
* ./poc /usr/bin/sudo && ls -l
Here I get with 2.6.20-rc5:
-rw------- 1 ad ad 102400 2007-01-15 19:17 core
---s--x--x 2 root root 101820 2007-01-15 19:15 /usr/bin/sudo
NeilBrown [Fri, 26 Jan 2007 08:57:14 +0000 (00:57 -0800)]
[PATCH] md: remove unnecessary printk when raid5 gets an unaligned read.
raid5_mergeable_bvec tries to ensure that raid5 never sees a read request
that does not fit within just one chunk. However as we must always accept
a single-page read, that is not always possible.
So when "in_chunk_boundary" fails, it might be unusual, but it is not a
problem and printing a message every time is a bad idea.
Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Jeff Dike [Fri, 26 Jan 2007 08:57:12 +0000 (00:57 -0800)]
[PATCH] Fix UML on non-standard VM split hosts
This fixes UML on hosts with non-standard VM splits. We had changed the
config variable that controls UML behavior on such hosts, but not
propogated the change everywhere. In particular, the values of STUB_CODE
and STUB_DATA relied on the old variable.
I also reformatted the HOST_VMSPLIT_3G help to make it more standard.
Spotted by uml@flonatel.org.
Signed-off-by: Jeff Dike <jdike@addtoit.com> Cc: Blaisorblade <blaisorblade@yahoo.it> Cc: Pravin <shindepravin@gmail.com> Cc: <uml@flonatel.org> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
NeilBrown [Fri, 26 Jan 2007 08:57:10 +0000 (00:57 -0800)]
[PATCH] knfsd: Fix type mismatch with filldir_t used by nfsd
nfsd defines a type 'encode_dent_fn' which is much like 'filldir_t' except
that the first pointer is 'struct readdir_cd *' rather than 'void *'. It
then casts encode_dent_fn points to 'filldir_t' as needed. This hides any
other type mismatches between the two such as the fact that the 'ino' arg
recently changed from ino_t to u64.
So: get rid of 'encode_dent_fn', get rid of the cast of the function type,
change the first arg of various functions from 'struct readdir_cd *' to
'void *', and live with the fact that we have a little less type checking
on the calling of these functions now. Less internal (to nfsd) checking
offset by more external checking, which is more important.
Thanks to Gabriel Paubert <paubert@iram.es> for discovering this and
providing an initial patch.
Signed-off-by: Gabriel Paubert <paubert@iram.es> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Robert P. J. Day [Fri, 26 Jan 2007 08:57:09 +0000 (00:57 -0800)]
[PATCH] fix various kernel-doc in header files
Fix a number of kernel-doc entries for header files in include/linux by
making sure they begin with the appropriate '/**' notation and use @var
notation.
Signed-off-by: Robert P. J. Day <rpjday@mindspring.com> Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Jun'ichi Nomura [Fri, 26 Jan 2007 08:57:07 +0000 (00:57 -0800)]
[PATCH] dm-multipath: fix stall on noflush suspend/resume
Allow noflush suspend/resume of device-mapper device only for the case
where the device size is unchanged.
Otherwise, dm-multipath devices can stall when resumed if noflush was used
when suspending them, all paths have failed and queue_if_no_path is set.
Explanation:
1. Something is doing fsync() on the block dev,
holding inode->i_sem
2. The fsync write is blocked by all-paths-down and queue_if_no_path
3. Someone requests to suspend the dm device with noflush.
Pending writes are left in queue.
4. In the middle of dm_resume(), __bind() tries to get
inode->i_sem to do __set_size() and waits forever.
'noflush suspend' is a new device-mapper feature introduced in
early 2.6.20. So I hope the fix being included before 2.6.20 is
released.
Example of reproducer:
1. Create a multipath device by dmsetup
2. Fail all paths during mkfs
3. Do dmsetup suspend --noflush and load new map with healthy paths
4. Do dmsetup resume
Signed-off-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com> Acked-by: Alasdair G Kergon <agk@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
[PATCH] 9p: null terminate error strings for debug print
We weren't properly NULL terminating protocol error strings for our debug
printk resulting in garbage being included in the output when debug was
enabled.
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
[PATCH] 9p: fix segfault caused by race condition in meta-data operations
Running dbench multithreaded exposed a race condition where fid structures
were removed while in use. This patch adds semaphores to meta-data operations
to protect the fid structure. Some cleanup of error-case handling in the
inode operations is also included.
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
[PATCH] 9p: update documentation regarding server applications
Update the documentation to cover using Inferno as a server for 9p and to
include information about spfs (a stable single-threaded stand-alone 9p
server).
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
9p doesn't handle renames between directories -- however, we were returning
EPERM instead of EXDEV when we detected this case.
Signed-off-by: Eric Van Hensbergren <ericvh@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
[PATCH] 9p: fix bogus return code checks during initialization
There is a simple logic error in init_v9fs - the return code checks are
reversed. This patch fixes the return code and adds some messages to prevent
module initialization from failing silently.
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
NeilBrown [Fri, 26 Jan 2007 08:57:03 +0000 (00:57 -0800)]
[PATCH] md: avoid reading past the end of a bitmap file
In most cases we check the size of the bitmap file before reading data from
it. However when reading the superblock, we always read the first PAGE_SIZE
bytes, which might not always be appropriate. So limit that read to the size
of the file if appropriate.
Also, we get the count of available bytes wrong in one place, so that too can
read past the end of the file.
Cc: "yang yin" <yinyang801120@gmail.com> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
NeilBrown [Fri, 26 Jan 2007 08:57:02 +0000 (00:57 -0800)]
[PATCH] md: make sure the events count in an md array never returns to zero
Now that we sometimes step the array events count backwards (when
transitioning dirty->clean where nothing else interesting has happened - so
that we don't need to write to spares all the time), it is possible for the
event count to return to zero, which is potentially confusing and triggers and
MD_BUG.
We could possibly remove the MD_BUG, but is just as easy, and probably safer,
to make sure we never return to zero.
Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
NeilBrown [Fri, 26 Jan 2007 08:57:01 +0000 (00:57 -0800)]
[PATCH] md: make 'repair' actually work for raid1
When 'repair' finds a block that is different one the various parts of the
mirror. it is meant to write a chosen good version to the others. However it
currently writes out the original data to each. The memcpy to make all the
data the same is missing.
Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Peter Staubach [Fri, 26 Jan 2007 08:57:00 +0000 (00:57 -0800)]
[PATCH] knfsd: Don't mess with the 'mode' when storing a exclusive-create cookie
NFS V3 (and V4) support exclusive create by passing a 'cookie' which can get
stored with the file. If the file exists but has exactly the right cookie
stored, then we assume this is a retransmit and the exclusive create was
successful.
The cookie is 64bits and is traditionally stored in the mtime and atime
fields. This causes a problem with Solaris7 as negative mtime or atime
confuse it. So we moved two bits into the mode word instead.
But inherited ACLs sometimes overwrite the mode word on create, so this is a
problem.
So we give up and just store 62 of the 64 bits and assume that is close
enough.
Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
NeilBrown [Fri, 26 Jan 2007 08:56:59 +0000 (00:56 -0800)]
[PATCH] knfsd: replace some warning ins nfsfh.h with BUG_ON or WARN_ON
A couple of the warnings will be followed by an Oops if they ever fire, so may
as well be BUG_ON. Another isn't obviously fatal but has never been known to
fire, so make it a WARN_ON.
Cc: Adrian Bunk <bunk@stusta.de> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
NeilBrown [Fri, 26 Jan 2007 08:56:59 +0000 (00:56 -0800)]
[PATCH] knfsd: fix an NFSD bug with full sized, non-page-aligned reads
NFSd assumes that largest number of pages that will be needed for a
request+response is 2+N where N pages is the size of the largest permitted
read/write request. The '2' are 1 for the non-data part of the request, and 1
for the non-data part of the reply.
However, when a read request is not page-aligned, and we choose to use
->sendfile to send it directly from the page cache, we may need N+1 pages to
hold the whole reply. This can overflow and array and cause an Oops.
This patch increases size of the array for holding pages by one and makes sure
that entry is NULL when it is not in use.
Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Tilman Schmidt [Fri, 26 Jan 2007 08:56:56 +0000 (00:56 -0800)]
[PATCH] Gigaset ISDN driver error handling fixes
Fix several flaws in the error handling of the Siemens Gigaset ISDN driver,
including one that would cause an Oops when connecting more than one device
of the same type.
Ingo Molnar [Fri, 26 Jan 2007 08:56:55 +0000 (00:56 -0800)]
[PATCH] ACPI: fix cpufreq regression
Recently cpufreq support on my laptop (Lenovo T60) broke completely: when
it's plugged into AC it would never go higher than 1 GHz - neither 1.3 GHz
nor 1.83 GHz is possible - no matter which governor (userspace, speed or
ondemand) is used.
After some cpufreq debugging i tracked the regression back to the following
(totally correct) bug-fix commit:
[PATCH] Correct bound checking from the value returned from _PPC method.
This bugfix, which makes other laptops work, made a previously hidden
(BIOS) bug visible on my laptop.
The bug is the following: if the _PPC (Performance Present Capabilities)
optional ACPI object is queried /after/ bootup then the BIOS reports an
incorrect value of '2'.
My laptop (Lenovo T60) has the following performance states supported:
Per ACPI specification, a _PPC value of '0' means that all 3 performance
states are usable. A _PPC value of '1' means states 1 .. 2 are usable, a
value of '2' means only state '2' (slowest) is usable.
now, the _PPC object is optional, and it also comes with notification.
Furthermore, when a CPU object is initialized, the _PPC object is
initialized as well. So the following evaluation of the _PPC object is
superfluous:
And this is the point where my laptop's BIOS returns the incorrect value of
'2'. Note that it has not sent any notification event, so the value is
probably not really intentional (possibly spurious), and Windows likely
doesnt query it after bootup either. Maybe the value is kept at '2'
normally, and is only set to the real value when a true asynchronous event
(such as AC plug event, battery switch, etc.) occurs.
So i /think/ this is a grey area of the ACPI spec: per the letter of the
spec the _PPC value only changes when notified, so there's no reason to
query it after the system has booted up. So in my opinion the best (and
most compatible) strategy would be to do the change below, and to not
evaluate the _PPC object in the acpi_processor_get_performance_info() call,
but only evaluate it if _PPC is present during CPU object init, or if it's
notified during an asynchronous event. This change is more permissive than
the previous logic, so it definitely shouldnt break any existing system.
This also happens to fix my laptop, which is merrily chugging along at
1.83 GHz now. Yay!
Signed-off-by: Ingo Molnar <mingo@elte.hu> Cc: Dave Jones <davej@redhat.com> Acked-by: Len Brown <lenb@kernel.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Atsushi Nemoto [Fri, 26 Jan 2007 08:56:54 +0000 (00:56 -0800)]
[PATCH] SPI: alternative fix for spi_busnum_to_master
If a SPI master device exists, udev (udevtrigger) causes kernel crash, due
to wrong kobj pointer in kobject_uevent_env(). This problem was not in
2.6.19.
The backtrace (on MIPS) was:
[<8024db6c>] kobject_uevent_env+0x54c/0x5e8
[<802a8264>] store_uevent+0x1c/0x3c (in drivers/class.c)
[<801cb14c>] subsys_attr_store+0x2c/0x50
[<801cb80c>] flush_write_buffer+0x38/0x5c
[<801cb900>] sysfs_write_file+0xd0/0x190
[<80181444>] vfs_write+0xc4/0x1a0
[<80181cdc>] sys_write+0x54/0xa0
[<8010dae4>] stack_done+0x20/0x3c
flush_write_buffer() passes kobject of spi_master_class.subsys to
subsys_addr_store(), then subsys_addr_store() passes a pointer to a struct
subsystem to store_uevent() which expects a pointer to a struct
class_device. The problem seems subsys_attr_store() called instead of
class_device_attr_store().
This mismatch was caused by commit 3bd0f6943520e459659d10f3282285e43d3990f1, which overrides kset of master
class. This made spi_master_class.subsys.kset.ktype NULL so
subsys_sysfs_ops is used instead of class_dev_sysfs_ops.
The commit was to fix spi_busnum_to_master(). Here is a patch fixes
this function in other way, just searching children list of
class_device.
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Roland McGrath [Fri, 26 Jan 2007 08:56:52 +0000 (00:56 -0800)]
[PATCH] x86_64 ia32 vDSO: define arch_vma_name
This patch makes x86_64 define arch_vma_name for CONFIG_IA32_EMULATION. This
makes the ia32 vDSO mapping appear in /proc/PID/maps with "[vdso]" for ia32
processes, as it does on native i386.
Signed-off-by: Roland McGrath <roland@redhat.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Roland McGrath [Fri, 26 Jan 2007 08:56:50 +0000 (00:56 -0800)]
[PATCH] x86_64 ia32 vDSO: use VM_ALWAYSDUMP
This patch fixes ia32 core dumps on x86_64 to include just one phdr for the
vDSO vma. Currently it writes a confused format with two phdrs for the
address, one without contents and one with. This patch removes the
special-case core writing macros for the ia32 vDSO. Instead, it uses
VM_ALWAYSDUMP in the vma. This changes core dumps so they no longer include
the non-PT_LOAD phdrs from the vDSO, consistent with fixed native i386 core
dumps.
Signed-off-by: Roland McGrath <roland@redhat.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Roland McGrath [Fri, 26 Jan 2007 08:56:49 +0000 (00:56 -0800)]
[PATCH] i386 vDSO: use VM_ALWAYSDUMP
This patch fixes core dumps to include the vDSO vma, which is left out now.
It removes the special-case core writing macros, which were not doing the
right thing for the vDSO vma anyway. Instead, it uses VM_ALWAYSDUMP in the
vma; there is no need for the fixmap page to be installed. It handles the
CONFIG_COMPAT_VDSO case by making elf_core_dump use the fake vma from
get_gate_vma after real vmas in the same way the /proc/PID/maps code does.
This changes core dumps so they no longer include the non-PT_LOAD phdrs from
the vDSO. I made the change to add them in the first place, but in turned out
that nothing ever wanted them there since the advent of NT_AUXV. It's cleaner
to leave them out, and just let the phdrs inside the vDSO image speak for
themselves.
Signed-off-by: Roland McGrath <roland@redhat.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Roland McGrath [Fri, 26 Jan 2007 08:56:48 +0000 (00:56 -0800)]
[PATCH] Add VM_ALWAYSDUMP
This patch adds the VM_ALWAYSDUMP flag for vm_flags in vm_area_struct. This
provides a clean explicit way to have a vma always included in core dumps, as
is needed for vDSO's.
Signed-off-by: Roland McGrath <roland@redhat.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Roland McGrath [Fri, 26 Jan 2007 08:56:47 +0000 (00:56 -0800)]
[PATCH] Fix gate_vma.vm_flags
This patch fixes the initialization of gate_vma.vm_flags and
gate_vma.vm_page_prot to reflect reality. This makes the "[vdso]" line in
/proc/PID/maps correctly show r-xp instead of ---p, when gate_vma is used
(CONFIG_COMPAT_VDSO on i386).
Signed-off-by: Roland McGrath <roland@redhat.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Roland McGrath [Fri, 26 Jan 2007 08:56:46 +0000 (00:56 -0800)]
[PATCH] Fix CONFIG_COMPAT_VDSO
I wouldn't mind if CONFIG_COMPAT_VDSO went away entirely. But if it's there,
it should work properly. Currently it's quite haphazard: both real vma and
fixmap are mapped, both are put in the two different AT_* slots, sysenter
returns to the vma address rather than the fixmap address, and core dumps yet
are another story.
This patch makes CONFIG_COMPAT_VDSO disable the real vma and use the fixmap
area consistently. This makes it actually compatible with what the old vdso
implementation did.
Signed-off-by: Roland McGrath <roland@redhat.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Justin Clacherty [Fri, 26 Jan 2007 08:56:44 +0000 (00:56 -0800)]
[PATCH] spi: fix error setting the spi mode in pxa2xx_spi.c
Currently the spi mode can be set to the wrong mode if you are switching
from any mode other than mode 0. This is because the mode is set using a
bitwise or on uncleared bits. The following patch clears the mode bits
before setting the new mode. I've also modified it to use the appropriate
defines from pxa-regs.h for readability.
Signed-off-by: Justin Clacherty <justin@redfish-group.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
projects / mirror_ubuntu-zesty-kernel.git / log