ext4_issue_discard is supposed to be helper for calling discard, however
in case that underlying device does not support discard it prints out
the warning message and clears the DISCARD t_mount_opt flag. Since it
can be (and is) used by others, it should not do anything and let the
caller to handle the error case.
This commit removes warning message and flag setting from
ext4_issue_discard and use it just in place where it is really needed
(release_blocks_on_commit). FITRIM ioctl should not set any flags nor it
should print out warning messages, so get rid of the warning as well.
Signed-off-by: Lukas Czerner <lczerner@redhat.com>
When determining last group through ext4_get_group_no_and_offset() the
result may be wrong in cases when range->start and range-len are too
big, because it may overflow when summing up those two numbers.
Fix that by checking range->len and limit its value to
ext4_blocks_count(). This commit was tested by myself with expected
result.
Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Using %pV reduces the number of printk calls and eliminates any
possible message interleaving from other printk calls.
In function __ext4_grp_locked_error also added KERN_CONT to some
printks.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
When nanosecond timestamp resolution isn't supported on an ext4
partition (inode size = 128), stat() appears to be returning
uninitialized garbage in the nanosecond component of timestamps.
EXT4_INODE_GET_XTIME should zero out tv_nsec when EXT4_FITS_IN_INODE
evaluates to false.
Reported-by: Jordan Russell <jr-list-2010@quo.to>
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This function gets called a lot for large directories, and the answer
is almost always "no, no, there's no problem". This means using
unlikely() is a good thing.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Use advantage of kmem_cache_zalloc() to remove a memset() call in
ext4_init_io_end() and save a few bytes.
Before:
[jj@dragon linux-2.6]$ size fs/ext4/page-io.o
text data bss dec hex filename
3016 0 624 3640 e38 fs/ext4/page-io.o
After:
[jj@dragon linux-2.6]$ size fs/ext4/page-io.o
text data bss dec hex filename
3000 0 624 3624 e28 fs/ext4/page-io.o
Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
IS_ERR() already implies unlikely(), so it can be omitted here.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
'buffer_head' should be 'journal_head'
This is a port of a patch which Namhyung Kim <namhyung@gmail.com> made
to fs/jbd to jbd2.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
We had an open-coded version of printk_ratelimited(); use the provided
abstraction to make the code cleaner and easier to understand.
Based on a similar patch for fs/jbd from Namhyung Kim <namhyung@gmail.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This fixes up some broken argument descriptions that Namhyung Kim had
originally submitted for ext3. This fixes the comments that were
still applicable in ext4.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Change clear_opt() and set_opt() to take a superblock pointer instead
of a pointer to EXT4_SB(sb)->s_mount_opt. This makes it easier for us
to support a second mount option field.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
ext4: fix typo which broke '..' detection in ext4_find_entry()
ext4: Turn off multiple page-io submission by default
Without this, gcc 4.5 won't compile xen-netfront and xen-blkfront, where
this is being used to specify array sizes.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: David Miller <davem@davemloft.net>
Cc: Stable Kernel <stable@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The MSM main git tree has changed over to this new address.
Signed-off-by: Daniel Walker <dwalker@codeaurora.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The install_special_mapping routine (used, for example, to setup the
vdso) skips the security check before insert_vm_struct, allowing a local
attacker to bypass the mmap_min_addr security restriction by limiting
the available pages for special mappings.
bprm_mm_init() also skips the check, and although I don't think this can
be used to bypass any restrictions, I don't see any reason not to have
the security check.
$ uname -m
x86_64
$ cat /proc/sys/vm/mmap_min_addr
65536
$ cat install_special_mapping.s
section .bss
resb BSS_SIZE
section .text
global _start
_start:
mov eax, __NR_pause
int 0x80
$ nasm -D__NR_pause=29 -DBSS_SIZE=0xfffed000 -f elf -o install_special_mapping.o install_special_mapping.s
$ ld -m elf_i386 -Ttext=0x10000 -Tbss=0x11000 -o install_special_mapping install_special_mapping.o
$ ./install_special_mapping &
[1] 14303
$ cat /proc/14303/maps
0000f000-00010000 r-xp 00000000 00:00 0 [vdso]
00010000-00011000 r-xp 00001000 00:19 2453665 /home/taviso/install_special_mapping
00011000-ffffe000 rwxp 00000000 00:00 0 [stack]
It's worth noting that Red Hat are shipping with mmap_min_addr set to
4096.
Signed-off-by: Tavis Ormandy <taviso@google.com>
Acked-by: Kees Cook <kees@ubuntu.com>
Acked-by: Robert Swiecki <swiecki@google.com>
[ Changed to not drop the error code - akpm ]
Reviewed-by: James Morris <jmorris@namei.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Add missing header file:
arch/x86/crypto/ghash-clmulni-intel_glue.c:256: error: implicit declaration of function 'IS_ERR'
arch/x86/crypto/ghash-clmulni-intel_glue.c:257: error: implicit declaration of function 'PTR_ERR'
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq:
workqueue: It is likely that WORKER_NOT_RUNNING is true
MAINTAINERS: Add workqueue entry
workqueue: check the allocation of system_unbound_wq
* 'for-linus' of git://neil.brown.name/md:
md: protect against NULL reference when waiting to start a raid10.
md: fix bug with re-adding of partially recovered device.
md: fix possible deadlock in handling flush requests.
md: move code in to submit_flushes.
md: remove handling of flush_pending in md_submit_flush_data
There is a possibility that the last word of a transaction will be lost
if data is not ready. Re-read in poll_transfer() to solve this issue
when poll_mode is enabled.
Verified on SPI touch screen device.
Signed-off-by: Major Lee <major_lee@wistron.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This gets caught by the new sanity check code. Instead of the slash use a
different symbol. This was originally found by Major Lee who proposed a
rather more complex patch which changed the name according to the chip
type.
On the basis that we are in a late -rc and making Linus grumpy isn't always
a good idea (however fun) this is a simple alternative.
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
There should be a check for the NUL character instead of '0'.
Fortunately the only thing that cares about this is NFS serving, which
is why we didn't notice this in the merge window testing.
Reported-by: Phil Carmody <ext-phil.2.carmody@nokia.com>
Signed-off-by: Aaro Koskinen <aaro.koskinen@nokia.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
* master.kernel.org:/home/rmk/linux-2.6-arm:
ARM: 6535/1: V6 MPCore v6_dma_inv_range and v6_dma_flush_range RWFO fix
ARM: 6534/1: Make CONFIG_FPE_NWFPE depend on !CONFIG_THUMB2_KERNEL
ARM: 6533/1: Thumb-2: Make CONFIG_THUMB2_KERNEL depend on !CPU_V6
Change bcmring Maintainer list.
ARM: Update mach-types
ARM: 6528/1: Use CTR for the I-cache line size on ARMv7
ARM: 6527/1: Use CTR instead of CCSIDR for the D-cache line size on ARMv7
ARM: pxa/palm: fix ifdef around gen_nand driver registration
ARM: pxa: fix pxa2xx-flash section mismatch
ARM: mmp2: remove not used clk_rtc
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
sparc: Write to prom console using indirect buffer.
sparc: Delete prom_*getchar().
sparc: Pass buffer pointer all the way down to prom_{get,put}char().
sparc: Do not export prom_nb{get,put}char().
sparc64: Delete prom_setcallback().
sparc64: Unexport prom_service_exists().
sparc: Kill prom devops_{32,64}.c
sparc: Remove prom_pathtoinode()
sparc64: Delete prom_puts() unused.
SPARC/LEON: removed constant timer initialization as if HZ=100, now it reflects the value of HZ
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (75 commits)
pppoe.c: Fix kernel panic caused by __pppoe_xmit
WAN: Fix a TX IRQ causing BUG() in PC300 and PCI200SYN drivers.
bnx2x: Advance a version number to 1.60.01-0
bnx2x: Fixed a compilation warning
bnx2x: LSO code was broken on BE platforms
qlge: Fix deadlock when cancelling worker.
net: fix skb_defer_rx_timestamp()
cxgb4vf: Ingress Queue Entry Size needs to be 64 bytes
phy: add the IC+ IP1001 driver
atm: correct sysfs 'device' link creation and parent relationships
MAINTAINERS: remove me from tulip
SCTP: Fix SCTP_SET_PEER_PRIMARY_ADDR to accpet v4mapped address
enic: Bug Fix: Pass napi reference to the isr that services receive queue
ipv6: fix nl group when advertising a new link
connector: add module alias
net: Document the kernel_recvmsg() function
r8169: Fix runtime power management
hso: IP checksuming doesn't work on GE0301 option cards
xfrm: Fix xfrm_state_migrate leak
net: Convert netpoll blocking api in bonding driver to be a counter
...
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6:
[SCSI] hpsa: fix redefinition of PCI_DEVICE_ID_CISSF
[SCSI] qla2xxx: Update version number to 8.03.05-k0.
[SCSI] qla2xxx: Properly set the return value in qla2xxx_eh_abort function.
[SCSI] qla2xxx: Correct issue where NPIV-config data was not being allocated for 82xx parts.
[SCSI] qla2xxx: Change MSI initialization from using incorrect request_irq parameter.
[SCSI] qla2xxx: Populate Command Type 6 LUN field properly.
[SCSI] zfcp: Issue FCP command without holding SCSI host_lock
[SCSI] zfcp: Prevent usage w/o holding a reference
[SCSI] zfcp: No ERP escalation on gpn_ft eval
[SCSI] zfcp: Correct false abort data assignment.
[SCSI] zfcp: Fix common FCP request reception
[SCSI] Eliminate error handler overload of the SCSI serial number
[SCSI] pmcraid: disable msix and expand device config entry
[SCSI] bsg: correct fault if queue object removed while dev_t open
[SCSI] osd: checking NULL instead of ERR_PTR()
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/linux-2.6-kgdb:
kgdboc,input: Fix regression with keyboard release key and early debugging
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6:
ACPI / PM: Do not save/restore NVS on Sony Vaio VGN-NW130D
ACPI/HEST: adjust section selection
ACPI: eliminate unused variable warning for !ACPI_SLEEP
ACPI/PNP: avoid section mismatch warning
ACPI thermal: remove two unused functions
ACPI: fix a section mismatch
ACPI, APEI, use raw spinlock in ERST
ACPI: video: fix build for CONFIG_ACPI=n
ACPI: video: fix build for VIDEO_OUTPUT_CONTROL=n
ACPI: fix allowing to add/remove multiple _OSI strings
acpi: fix _OSI string setup regression
ACPI: EC: Add another dmi match entry for MSI hardware
ACPI battery: update status upon sysfs query
ACPI ac: update AC status upon sysfs query
ACPI / PM: Do not refcount power resources that can't be turned on
ACPI / PM: Check device state before refcounting power resources
Cache ownership must be acquired by reading/writing data from the
cache line to make cache operation have the desired effect on the
SMP MPCore CPU. However, the ownership is never acquired in the
v6_dma_inv_range function when cleaning the first line and
flushing the last one, in case the address is not aligned
to D_CACHE_LINE_SIZE boundary.
Fix this by reading/writing data if needed, before performing
cache operations.
While at it, fix v6_dma_flush_range to prevent RWFO outside
the buffer.
Cc: stable@kernel.org
Signed-off-by: Valentine Barshak <vbarshak@mvista.com>
Signed-off-by: George G. Davis <gdavis@mvista.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Because the nwfpe support is unlikely to be used on new platforms
and requires CONFIG_OABI_COMPAT, which is not generally used with
ARMv7+, we shouldn't expect to build nwfpe support into a Thumb-2
kernel.
At present, nwfpe contains assembly code which isn't Thumb-2
compatible, and for now it doesn't appear useful to port this
code.
All ARMv7-A/R platforms necessarily have VFPv3 hardware floating-
point natively, making emulation unnecessary.
Signed-off-by: Dave Martin <dave.martin@linaro.org>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This makes sense, because Thumb-2 code can't execute on plain
ARMv6 processors.
This will avoid accidentally configuring a broken kernel where the
config otherwise would allow multiple architecture versions to
coexist in the same kernel.
Not adding !CPU_V5 etc., because the chance of anyone trying to
put v5 and v7 in the same kernel is low, and I'm not aware of
any mach which can do this. These could be added later if it
matters.
Note that the rules may need to be refined if support for the
ARM1156J(F)-S processor is later added to the kernel, since this
processor supports the rare ARMv6T2 extensions, which add support
for Thumb-2 and a few other ARMv7 features.
Signed-off-by: Dave Martin <dave.martin@linaro.org>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
I am Jiandong Zheng working on BCMRING in Broadcom Canada Ltd. I am
replacing Leo Chen (leochen@broadcom.com) as "ARM/BCMRING ARM
ARCHITECTURE" and "ARM/BCMRING MTD NAND DRIVER" maintainer from
Broadcom as he is no longer the maintainer of these components.
Signed-off-by: Jiandong Zheng <jdzheng@broadcom.com>
Acked-by: Scott Branden <sbranden@broadcom.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
