H. Peter Anvin [Thu, 24 Apr 2008 20:37:33 +0000 (13:37 -0700)]
types: add C99-style constructors to <asm-generic/int-*.h>
Add C99-style constructor macros for fixed types to
<asm-generic/int-*.h>. Since Linux uses names like "u64" instead of
"uint64_t", the constructor macros are called U64_C() instead of
UINT64_C() and so forth.
These macros allow specific sizes to be specified as
U64_C(0x123456789abcdef), without gcc issuing warnings as it will if
one writes (u64)0x123456789abcdef.
When used from assembly, these macros pass their argument unchanged.
H. Peter Anvin [Sun, 6 Apr 2008 17:35:14 +0000 (10:35 -0700)]
x86: types: use <asm-generic/int-*.h> for the x86 architecture
This modifies <asm-x86/types.h> to use the <asm-generic/int-*.h>
generic include files.
Signed-off-by: H. Peter Anvin <hpa@zytor.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de>
H. Peter Anvin [Sun, 6 Apr 2008 17:35:09 +0000 (10:35 -0700)]
parisc: types: use <asm-generic/int-*.h> for the parisc architecture
This modifies <asm-parisc/types.h> to use the <asm-generic/int-*.h>
generic include files.
Signed-off-by: H. Peter Anvin <hpa@zytor.com> Cc: Kyle McMartin <kyle@parisc-linux.org> Cc: Matthew Wilcox <matthew@wil.cx> Cc: Grant Grundler <grundler@parisc-linux.org>
H. Peter Anvin [Sun, 6 Apr 2008 17:35:00 +0000 (10:35 -0700)]
arm: types: use <asm-generic/int-*.h> for the arm architecture
This modifies <asm-arm/types.h> to use the <asm-generic/int-*.h>
generic include files.
Signed-off-by: H. Peter Anvin <hpa@zytor.com> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Lennert Buytenhek <kernel@wantstofly.org> Cc: Ben Dooks <ben-linux@fluff.org>
H. Peter Anvin [Thu, 24 Apr 2008 19:56:52 +0000 (12:56 -0700)]
types: create <asm-generic/int-*.h>
This creates two generic files with common integer definitions; one
where 64 bits is "long" (most 64-bit architectures) and one where 64
bits is "long long" (all 32-bit architectures and x86-64.)
Signed-off-by: H. Peter Anvin <hpa@zytor.com> Cc: Anton Blanchard <anton@samba.org> Cc: Ben Dooks <ben-linux@fluff.org> Cc: Bryan Wu <cooloney@kernel.org> Cc: Chris Zankel <chris@zankel.net> Cc: David Howells <dhowells@redhat.com> Cc: David S. Miller <davem@davemloft.net> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Grant Grundler <grundler@parisc-linux.org> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Hirokazu Takata <takata@linux-m32r.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Jesper Nilsson <jesper.nilsson@axis.com> Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com> Cc: Kyle McMartin <kyle@parisc-linux.org> Cc: Lennert Buytenhek <kernel@wantstofly.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Matthew Wilcox <matthew@wil.cx> Cc: Mikael Starvik <starvik@axis.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Richard Henderson <rth@twiddle.net> Cc: Roman Zippel <zippel@linux-m68k.org> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Tony Luck <tony.luck@intel.com> Cc: William L. Irwin <wli@holomorphy.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6: (32 commits)
USB GADGET/PERIPHERAL: g_file_storage Bulk-Only Transport compliance, clear-feature ignore
USB GADGET/PERIPHERAL: g_file_storage Bulk-Only Transport compliance
usb_serial: some coding style fixes
USB: Remove redundant dependencies on USB_ATM.
USB: UHCI: disable remote wakeup when it's not needed
USB: OHCI: work around bogus compiler warning
USB: add Cypress c67x00 OTG controller HCD driver
USB: add Cypress c67x00 OTG controller core driver
USB: add Cypress c67x00 low level interface code
USB: airprime: unlock mutex instead of trying to lock it again
USB: storage: Update mailling list address
USB: storage: UNUSUAL_DEVS() for PanDigital Picture frame.
USB: Add the USB 2.0 extension descriptor.
USB: add more FTDI device ids
USB: fix cannot work usb storage when using ohci-sm501
usb: gadget zero timer init fix
usb: gadget zero style fixups (mostly whitespace)
usb serial gadget: CDC ACM fixes
usb: pxa27x_udc driver
USB: INTOVA Pixtreme camera mass storage device
...
Alan Stern [Tue, 22 Apr 2008 14:49:15 +0000 (10:49 -0400)]
USB: UHCI: disable remote wakeup when it's not needed
This patch (as1084b) fixes the way uhci-hcd handles polling and
remote wakeups for its root hubs. When remote wakeup is disabled,
neither interrupts nor polling should be enabled during a root-hub
suspend. Likewise, if interrupts are enabled during suspend then
polling isn't needed.
Furthermore the EGSM (Enter Global Suspend Mode) bit shouldn't be set
in the Command register unless remote wakeup is enabled. Apparently
some controllers will issue a remote-wakeup interrupt whenever EGSM
is on, even if Resume-Detect interrupts are supposedly disabled.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch add the core driver for the c67x00 USB OTG controller. The core
driver is responsible for the platform bus binding and creating either
USB HCD or USB Gadget instances for each of the serial interface engines
on the chip.
This driver does not directly implement the HCD or gadget behaviours; it
just controls access to the chip.
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk> Acked-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Peter Korsgaard [Sun, 27 Apr 2008 06:59:43 +0000 (08:59 +0200)]
USB: add Cypress c67x00 low level interface code
This patch adds the low level support code for the Cypress c67x00 family of
OTG controllers. The low level code is responsible for register access and
implements the software protocol for communicating with the 16bit
microcontroller inside the c67x00 device.
Communication is done over the HPI interface (16bit SRAM-like parallel bus).
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk> Acked-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
USB: airprime: unlock mutex instead of trying to lock it again
The following patch fixes a [probable] copy & paste mistake in
airprime.c. Instead of unlocking an acquired mutex, the actual
code tries to lock it again.
Andrew Lunn [Wed, 23 Apr 2008 20:04:30 +0000 (22:04 +0200)]
USB: storage: Update mailling list address
drivers/usb/storage/unusual_devs.h lists the address
linux-usb-devel@lists.sourceforge.net for patches to that file. This
address results in a bounce and a pointer to vger. This patch updates
the address in the header file.
Signed-off-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Sarah Sharp [Fri, 25 Apr 2008 23:46:45 +0000 (16:46 -0700)]
USB: Add the USB 2.0 extension descriptor.
This device descriptor was added by the recent USB Link Power Management (LPM)
ECN. It indicates whether the USB device supports LPM.
This descriptor is grouped under a Binary Device Object Store (BOS) descriptor.
Update the BOS comments to indicate any USB device (not just wireless USB
devices) can implement BOS descriptors.
Signed-off-by: Sarah Sharp <sarah.a.sharp@intel.com> Acked-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
USB: fix cannot work usb storage when using ohci-sm501
When I used ohci-sm501, hcd_alloc_coherent() in map_urb_for_dma() is not
called, because usb_sg_init() always sets URB_NO_TRANSFER_DMA_MAP.
dmesg (CONFIG_USB_STORAGE_DEBUG enabled):
usb-storage: Bulk Command S 0x43425355 T 0x1 L 36 F 128 Trg 0 LUN 0 CL 6
usb-storage: usb_stor_bulk_transfer_buf: xfer 31 bytes
usb-storage: Status code 0; transferred 31/31
usb-storage: -- transfer complete
usb-storage: Bulk command transfer result=0
usb-storage: usb_stor_bulk_transfer_sglist: xfer 36 bytes, 1 entries
usb-storage: Status code -75; transferred 0/36
usb-storage: -- babble
usb-storage: Bulk data transfer result 0x3
usb-storage: Attempting to get CSW...
usb-storage: usb_stor_bulk_transfer_buf: xfer 13 bytes
usb-storage: Status code 0; transferred 13/13
usb-storage: -- transfer complete
usb-storage: Bulk status result = 0
usb-storage: Bulk Status S 0x53425355 T 0x1 R 0 Stat 0x0
usb-storage: scsi cmd done, result=0x2
David Lopo [Sat, 19 Apr 2008 01:49:01 +0000 (18:49 -0700)]
usb: gadget zero timer init fix
Initialize timer earlier so if an error occurs allocating USB request
or buffer request (zero_bind) Gadget Zero will not hang trying to
delete an uninitialized timer (zero_unbind).
Signed-off-by: David Lopo <lopo.david@gmail.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
David Brownell [Sat, 19 Apr 2008 01:47:54 +0000 (18:47 -0700)]
usb: gadget zero style fixups (mostly whitespace)
Minor updates to "Gadget Zero".
- Primarily these are whitespace updates to address the fact that since
this was written, Documentation/CodingStyle was changed to disapprove
of parts of the original coding style.
- Update a few comments that weren't quite correct, notably mentioning
the "autoresume" module parameter.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
David Brownell [Sat, 19 Apr 2008 00:37:49 +0000 (17:37 -0700)]
usb serial gadget: CDC ACM fixes
Based on a patch from <Aurel.Thomi@ruag.com>, this makes the
CDC-ACM support in the serial gadget handle the SET_LINE_CODING
and SET_CONTROL_LINE_STATE requests ... which should improve
interop with at least MS-Windows "usbser.sys" if not some other
ACM host drivers.
It also adds a few REVISIT comments where this code plays a bit
loose with the CDC ACM spec. If this were used to hook up to a
real RS232 or modem link, those places would need a bit of work.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Robert Jarzmik [Fri, 18 Apr 2008 22:56:49 +0000 (15:56 -0700)]
usb: pxa27x_udc driver
Adds pxa27x udc driver to support USB peripherals on pxa27x chips.
The driver is compatible with: Gadget Zero, the File Storage
gadget, and the Ethernet gadget (only in CDC subset mode).
The driver can't properly support multiple interfaces, because
of hardware bugs without possible workaround. That means no
RNDIS support from g_ether, and no CDC ACM support in g_serial.
Signed-off-by: Robert Jarzmik <rjarzmik@free.fr> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
David Brownell [Sat, 26 Apr 2008 01:51:10 +0000 (18:51 -0700)]
USB: usbtest displays diagnostics again
Minor cleanup to the "usbtest" driver, mostly to resolve a regression:
all the important diagnostics were at KERN_DEBUG, so that when the
"#define DEBUG" was removed from the top of that file it stopped
providing diagnostics. Fix by using KERN_ERROR. Also:
- Stop using the legacy dbg() calls
- Simplify the internal debug macros
- Correct some test descriptions:
* Test #10 subcase 7 should *always* stall
* Test #10 subcase 8 *may* stall
- Diagnostic about control queue test failures is more informative
- Fix some whitespace "bugs"
And add a warning about the rude interaction between usbfs ioctl()
and khubd during device disconnect ... don't unplug a device under
test, that will wedge.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Pete Zaitcev [Sat, 19 Apr 2008 21:42:49 +0000 (14:42 -0700)]
ub: Ignore bad residue
I hoped to continue to ignore this problem or use libusual, but these
days it's simpler to work around than to deal with it. Let's attempt to
use bad residue devices and hope that upper level integrity checks catch
any problems (e.g. please use sha1sum on your backups).
Signed-off-by: Pete Zaitcev <zaitcev@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Pete Zaitcev [Sat, 19 Apr 2008 21:32:18 +0000 (14:32 -0700)]
ub: Fix timeouts
The wodim says:
"close track/session scsi sendcmd: cmd timeout after 5.000 (480) s"
This happened because we ignored the supplied timeout and used 5s.
It's not completely correct to apply a timeout meant for the complete
command to any single URB, but we don't have many URBs per command, so
this is simple and works.
Signed-off-by: Pete Zaitcev <zaitcev@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This driver has been written from scratch and supports the ISP1760. ISP1761
might (should) work as well but the OTG isn't supported. Also ISO packets are
not. However, it works on my little PowerPC board.
Signed-off-by: Sebastian Siewior <bigeasy@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Linus Torvalds [Fri, 2 May 2008 15:20:43 +0000 (08:20 -0700)]
Merge branch 'for-linus' of git://www.linux-m32r.org/git/takata/linux-2.6_dev
* 'for-linus' of git://www.linux-m32r.org/git/takata/linux-2.6_dev:
m32r: cleanup: drop .data.idt section in vmlinux.lds script
m32r: use KBUILD_DEFCONFIG
* git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus:
lguest: make Launcher see device status updates
lguest: remove bogus NULL cpu check
lguest: avoid using NR_CPUS as a bounds check.
virtio: add virtio disk geometry feature
virtio: explicit advertisement of driver features
virtio: change config to guest endian.
virtio: finer-grained features for virtio_net
virtio: wean net driver off NETDEV_TX_BUSY
virtio-blk: fix remove oops
virtio: fix scatterlist sizing in net driver.
virtio: de-structify virtio_block status byte
virtio: export more headers to userspace
virtio: fix sparse return void-valued expression warnings
virtio: fix tx_ stats in virtio_net
virtio: ignore corrupted virtqueues rather than spinning.
Rusty Russell [Sat, 3 May 2008 02:50:51 +0000 (21:50 -0500)]
lguest: avoid using NR_CPUS as a bounds check.
NR_CPUS (being a host number) is an arbitrary limit for the Guest.
Using the array size directly (which currently happes to be NR_CPUS)
is more futureproof.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Ryan Harper [Wed, 16 Apr 2008 18:56:37 +0000 (13:56 -0500)]
virtio: add virtio disk geometry feature
Rather than faking up some geometry, allow the backend to push the disk
geometry via virtio pci config option. Keep the old geo code around for
compatibility.
Signed-off-by: Ryan Harper <ryanh@us.ibm.com> Reviewed-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> (modified to single struct)
Rusty Russell [Sat, 3 May 2008 02:50:50 +0000 (21:50 -0500)]
virtio: explicit advertisement of driver features
A recent proposed feature addition to the virtio block driver revealed
some flaws in the API: in particular, we assume that feature
negotiation is complete once a driver's probe function returns.
There is nothing in the API to require this, however, and even I
didn't notice when it was violated.
So instead, we require the driver to specify what features it supports
in a table, we can then move the feature negotiation into the virtio
core. The intersection of device and driver features are presented in
a new 'features' bitmap in the struct virtio_device.
Note that this highlights the difference between Linux unsigned-long
bitmaps where each unsigned long is in native endian, and a
straight-forward little-endian array of bytes.
Drivers can still remove feature bits in their probe routine if they
really have to.
API changes:
- dev->config->feature() no longer gets and acks a feature.
- drivers should advertise their features in the 'feature_table' field
- use virtio_has_feature() for extra sanity when checking feature bits
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Rusty Russell [Sat, 3 May 2008 02:50:49 +0000 (21:50 -0500)]
virtio: change config to guest endian.
A recent proposed feature addition to the virtio block driver revealed
some flaws in the API, in particular how easy it is to break big
endian machines.
The virtio config space was originally chosen to be little-endian,
because we thought the config might be part of the PCI config space
for virtio_pci. It's actually a separate mmio region, so that
argument holds little water; as only x86 is currently using the virtio
mechanism, we can change this (but must do so now, before the
impending s390 merge).
API changes:
- __virtio_config_val() just becomes a striaght vdev->config_get() call.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Rusty Russell [Sat, 3 May 2008 02:50:46 +0000 (21:50 -0500)]
virtio: finer-grained features for virtio_net
So, we previously had a 'VIRTIO_NET_F_GSO' bit which meant that 'the
host can handle csum offload, and any TSO (v4&v6 incl ECN) or UFO
packets you might want to send. I thought this was good enough for
Linux, but it actually isn't, since we don't do UFO in software.
So, add separate feature bits for what the host can handle. Add
equivalent ones for the guest to say what it can handle, because LRO
is coming too (thanks Herbert!).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Rusty Russell [Sat, 3 May 2008 02:50:45 +0000 (21:50 -0500)]
virtio: fix scatterlist sizing in net driver.
Herbert Xu points out (within another patch) that my scatterlists are
too short: one entry for the gso header, one for the skb->data, and
MAX_SKB_FRAGS for all the fragments.
Fix both xmit and recv sides (recv currently unused, coming in later
patch).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
is there a reason why we dont export the virtio headers for
9p, balloon, console, pci, and virtio_ring? kvm uses make sync,
but I think it is still useful to heave these headers exported
as they might be useful for other userspace tools.
I dont export virtio.h, because it does not seem to have useful
information for userspace and it requires scatterlist.h which is
also not exported. See also my other mail about your "virtio:
change config to guest endian." patch.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Rusty Russell [Sat, 3 May 2008 02:50:43 +0000 (21:50 -0500)]
virtio: ignore corrupted virtqueues rather than spinning.
A corrupt virtqueue (caused by the other end screwing up) can have
strange results such as a driver spinning: just bail when we try to
get a buffer from a known-broken queue.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Thomas Gleixner [Mon, 28 Apr 2008 15:01:56 +0000 (17:01 +0200)]
genirq: reenable a nobody cared disabled irq when a new driver arrives
Uwe Kleine-Koenig has some strange hardware where one of the shared
interrupts can be asserted during boot before the appropriate driver
loads. Requesting the shared irq line from another driver result in a
spurious interrupt storm which finally disables the interrupt line.
I have seen similar behaviour on resume before (the hardware does not
work anymore so I can not verify).
Change the spurious disable logic to increment the disable depth and
mark the interrupt with an extra flag which allows us to reenable the
interrupt when a new driver arrives which requests the same irq
line. In the worst case this will disable the irq again via the
spurious trap, but there is a decent chance that the new driver is the
one which can handle the already asserted interrupt and makes the box
usable again.
Eric Biederman said further: This case also happens on a regular basis
in kdump kernels where we deliberately don't shutdown the hardware
before starting the new kernel. This patch should reduce the need for
using irqpoll in that situation by a small amount.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-and-Acked-by: Uwe Kleine-König <Uwe.Kleine-Koenig@digi.com>
Al Viro [Thu, 1 May 2008 21:36:36 +0000 (14:36 -0700)]
[IA64] fix file and descriptor handling in perfmon
Races galore... General rule: as soon as it's in descriptor table,
it's over; another thread might have started IO on it/dup2() it
elsewhere/dup2() something *over* it/etc. fd_install() is the very
last step one should take - it's a point of no return.
Besides, the damn thing leaked on failure exits...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Tony Luck <tony.luck@intel.com>
Roland McGrath [Wed, 30 Apr 2008 21:40:14 +0000 (14:40 -0700)]
[IA64] TS_RESTORE_SIGMASK
Replace TIF_RESTORE_SIGMASK with TS_RESTORE_SIGMASK and define
our own set_restore_sigmask() function. This saves the costly
SMP-safe set_bit operation, which we do not need for the sigmask
flag since TIF_SIGPENDING always has to be set too.
Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
Linus Torvalds [Thu, 1 May 2008 18:31:38 +0000 (11:31 -0700)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6:
firewire: fw-sbp2: log scsi_target ID at release
ieee1394: fix NULL pointer dereference in sysfs access
Jared Hulbert [Wed, 30 Apr 2008 06:26:49 +0000 (23:26 -0700)]
[MTD][NOR] Add physical address to point() method
Adding the ability to get a physical address from point() in addition
to virtual address. This physical address is required for XIP of
userspace code from flash.
Signed-off-by: Jared Hulbert <jaredeh@gmail.com> Reviewed-by: Jörn Engel <joern@logfs.org> Acked-by: Nicolas Pitre <nico@cam.org> Acked-by: Greg Ungerer <gerg@uclinux.org> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Stefan Richter [Thu, 1 May 2008 08:43:04 +0000 (10:43 +0200)]
ieee1394: fix NULL pointer dereference in sysfs access
Regression since "ieee1394: prevent device binding of raw1394,
video1394, dv1394", commit d2ace29fa44589da51fedc06a67b3f05301f3bfd:
$ cat /sys/bus/ieee1394/drivers/raw1394/device_ids
triggers a NULL pointer dereference in fw_show_drv_device_ids.
Reported by Miles Lane.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> Tested-by: Miles Lane <miles.lane@gmail.com>
David Woodhouse [Thu, 1 May 2008 17:47:17 +0000 (18:47 +0100)]
[JFFS2] Track parent inode for directories (for NFS export)
To support NFS export, we need to know the parent inode of directories.
Rather than growing the jffs2_inode_cache structure, share space with
the nlink field -- which was always set to 1 for directories anyway.
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
With s390 the last arch switched to the generic sys_ptrace yesterday so
we can now kill the ifdef around it to enforce every new port it using
it instead of introducing new weirdo versions.
Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Al Viro [Mon, 28 Apr 2008 00:04:15 +0000 (20:04 -0400)]
[PATCH] fix sysctl_nr_open bugs
* if luser with root sets it to something that is not a multiple of
BITS_PER_LONG, the system is screwed.
* if it gets decreased at the wrong time, we can get expand_files()
returning success and _not_ increasing the size of table as asked.
Al Viro [Sat, 23 Feb 2008 11:46:49 +0000 (06:46 -0500)]
[PATCH] sanitize anon_inode_getfd()
a) none of the callers even looks at inode or file returned by anon_inode_getfd()
b) any caller that would try to look at those would be racy, since by the time
it returns we might have raced with close() from another thread and that
file would be pining for fjords.
Al Viro [Wed, 23 Apr 2008 04:49:25 +0000 (00:49 -0400)]
[PATCH] remove horrors with irix tty ioctls handling
Existing code in there (get_tty(), etc.) is both severely
racy *and* pointless: ioctls in question have Linux equivalents
and there's no need to play silly buggers in irix_ioctl() -
just need to replace arguments and, in case of TIOCGSID,
deal with API differences - Linux one expects pid_t __user *
while Irix one does unsigned long __user *. BFD...
Al Viro [Tue, 22 Apr 2008 23:46:10 +0000 (19:46 -0400)]
[PATCH] fix file and descriptor handling in perfmon
Races galore... General rule: as soon as it's in descriptor table,
it's over; another thread might have started IO on it/dup2() it
elsewhere/dup2() something *over* it/etc. fd_install() is the very
last step one should take - it's a point of no return.
Besides, the damn thing leaked on failure exits...
projects / linux-2.6 / log