Paul Menage
cc31edceee
cgroups: convert tasks file to use a seq_file with shared pid array ...
Rather than pre-generating the entire text for the "tasks" file each
time the file is opened, we instead just generate/update the array of
process ids and use a seq_file to report these to userspace. All open
file handles on the same "tasks" file can share a pid array, which may
be updated any time that no thread is actively reading the array. By
sharing the array, the potential for userspace to DoS the system by
opening many handles on the same "tasks" file is removed.
[Based on a patch by Lai Jiangshan, extended to use seq_file]
Signed-off-by: Paul Menage <menage@google.com>
Reviewed-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Cc: Serge Hallyn <serue@us.ibm.com>
Cc: Balbir Singh <balbir@in.ibm.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-20 08:52:38 -07:00
V4L/DVB (9196): Add support for DSS delivery
2008-10-17 17:15:43 -03:00
NLM: Remove "proto" argument from lockd_up()
2008-10-04 17:12:27 -04:00
fbdev: add new TMIO framebuffer driver
2008-10-16 11:21:45 -07:00
IB/mlx4: Fix up fast register page list format
2008-09-15 14:25:23 -07:00
Fix comment in include/linux/mmc/host.h
2008-10-12 11:04:34 +02:00
Support 'discard sectors' operation in translation layer support core
2008-10-09 08:56:01 +02:00
netfilter: ctnetlink: remove bogus module dependency between ctnetlink and nf_nat
2008-10-14 11:58:31 -07:00
netfilter: xtables: move extension arguments into compound structure (5/6)
2008-10-08 11:35:19 +02:00
netfilter: rename ipt_recent to xt_recent
2008-10-08 11:35:00 +02:00
nfsd: permit unauthenticated stat of export root
2008-09-29 17:56:56 -04:00
md: remove space after function name in declaration and call.
2008-10-13 11:55:12 +11:00
regulator: Fix typo
2008-10-13 21:51:51 +01:00
orion_spi: handle 88F6183 erratum
2008-10-16 11:21:38 -07:00
Merge branch 'next'
2008-10-15 15:54:56 -04:00
pkt_action: add new action skbedit
2008-09-12 16:30:20 -07:00
usb: vstusb.c : new driver for spectrometers used by Vernier Software & Technology, Inc.
2008-10-17 14:41:01 -07:00
Configure out AIO support
2008-10-16 11:21:51 -07:00
ide: lba_capacity_is_ok() -> ata_id_is_lba_capacity_ok()
2008-10-10 22:39:31 +02:00
autofs4: add miscellaneous device for ioctls
2008-10-16 11:21:39 -07:00
autofs4: add miscellaneous device for ioctls
2008-10-16 11:21:39 -07:00
vmscan: split LRU lists into anon & file sets
2008-10-20 08:50:25 -07:00
Allow recursion in binfmt_script and binfmt_misc
2008-10-16 11:21:38 -07:00
Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block
2008-10-17 09:29:55 -07:00
Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block
2008-10-17 09:29:55 -07:00
blktrace: add support for driver data
2008-10-17 08:46:57 +02:00
fs: buffer lock use lock bitops
2008-10-20 08:52:32 -07:00
cgroups: convert tasks file to use a seq_file with shared pid array
2008-10-20 08:52:38 -07:00
container freezer: implement freezer cgroup subsystem
2008-10-20 08:52:34 -07:00
include/linux/clk.h: fix comment
2008-10-16 11:21:32 -07:00
MN10300: Move asm-arm/cnt32_to_63.h to include/linux/
2008-09-24 16:38:17 -07:00
compat: generic compat get/settimeofday
2008-10-16 11:21:33 -07:00
Revert "vt: fix background color on line feed"
2008-10-14 12:12:02 -07:00
[CPUFREQ][1/6] cpufreq: Add cpu number parameter to __cpufreq_driver_getavg()
2008-10-09 13:52:43 -04:00
dm: publish dm_vcalloc
2008-10-10 13:37:12 +01:00
Driver core: add bus_sort_breadthfirst() function
2008-10-16 09:24:52 -07:00
Add an instance parameter devpts interfaces
2008-10-13 09:51:43 -07:00
convert swiotlb to use dma_get_mask
2008-09-19 10:20:41 +02:00
VT-d: Changes to support KVM
2008-10-15 14:24:08 +02:00
Automatic MODULE_ALIAS() for DMI match tables.
2008-10-13 16:05:06 +01:00
MIPS: IP22/28: Switch over to RTC class driver
2008-10-15 12:46:51 +01:00
driver core: basic infrastructure for per-module dynamic debug messages
2008-10-16 09:24:47 -07:00
block: Add interface to abort queued requests
2008-10-09 08:56:13 +02:00
x86: ioperm user_regset
2008-10-12 12:05:55 +02:00
include: replace __FUNCTION__ with __func__
2008-10-16 11:21:30 -07:00
ext3: add an option to control error handling on file data
2008-10-20 08:52:37 -07:00
include: replace __FUNCTION__ with __func__
2008-10-16 11:21:30 -07:00
fb: convert lock/unlock_kernel() into local fb mutex
2008-10-20 08:52:36 -07:00
floppy: support arbitrary first-sector numbers
2008-10-09 08:56:19 +02:00
vfs: vfs-level fiemap interface
2008-10-08 19:44:18 -04:00
firewire: Add more documentation to firewire-cdev.h
2008-10-15 22:21:11 +02:00
container freezer: implement freezer cgroup subsystem
2008-10-20 08:52:34 -07:00
Merge branch 'for-2.6.28' of git://linux-nfs.org/~bfields/linux
2008-10-14 12:31:14 -07:00
block: allow disk to have extended device number
2008-10-09 08:56:08 +02:00
GFS2: Add UUID to GFS2 sb
2008-09-22 07:29:31 +01:00
gpio_free might sleep, generic part
2008-10-16 11:21:40 -07:00
HID: fix a lockup regression when using force feedback on a PID device
2008-10-14 23:51:02 +02:00
HID: hiddev.h: Fix example code.
2008-10-14 23:51:02 +02:00
hrtimer: prevent migration of per CPU hrtimers
2008-09-29 17:09:14 +02:00
V4L/DVB (9240): saa7127: Fix two typos
2008-10-17 17:25:11 -03:00
i2o: Fix 32/64bit DMA locking
2008-10-16 11:21:38 -07:00
IPV6: Fix default gateway criteria wrt. HIGH/LOW preference radv option
2008-10-15 16:03:01 -07:00
ide: Implement disk shock protection support (v4)
2008-10-13 21:39:50 +02:00
mac80211: mesh portal functionality support
2008-09-24 16:18:02 -04:00
net: network device name ifalias support
2008-09-22 21:28:11 -07:00
net: Rationalise email address: Network Specific Parts
2008-10-13 19:01:08 -07:00
net: Rationalise email address: Network Specific Parts
2008-10-13 19:01:08 -07:00
net: Rationalise email address: Network Specific Parts
2008-10-13 19:01:08 -07:00
net: network device name ifalias support
2008-09-22 21:28:11 -07:00
phonet: Protect if_phonet.h against multiple inclusions.
2008-10-01 01:30:19 -07:00
gre: Add netlink interface
2008-10-09 11:59:55 -07:00
net: Rationalise email address: Network Specific Parts
2008-10-13 19:01:08 -07:00
ipv4: Implement IP_TRANSPARENT socket option
2008-10-01 07:30:02 -07:00
ipv4: add mc_count to in_device.
2008-10-07 15:34:37 -07:00
init.h: remove long-dead __setup_null_param() macro
2008-10-16 11:21:30 -07:00
VT-d: Changes to support KVM
2008-10-15 14:24:08 +02:00
softirq: Add support for triggering softirq work on softirqs.
2008-10-17 08:46:56 +02:00
introduce generic iommu_num_pages function
2008-10-16 11:21:33 -07:00
Merge branch 'core-v28-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2008-10-16 15:17:40 -07:00
VT-d: Changes to support KVM
2008-10-15 14:24:08 +02:00
isdn: isdn_ppp: Use SKB list facilities instead of home-grown implementation.
2008-09-22 01:15:02 -07:00
V4L/DVB (8959): include <linux/videodev2.h> into linux/ivtv.h
2008-10-12 09:37:01 -02:00
ext3: add an option to control error handling on file data
2008-10-20 08:52:37 -07:00
ext4: Replace hackish ext4_mb_poll_new_transaction with commit callback
2008-10-16 20:00:24 -04:00
Remove Andrew Morton's old email accounts
2008-10-16 11:21:32 -07:00
vsprintf: use new vsprintf symbolic function pointer format
2008-10-16 11:21:31 -07:00
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
2008-10-16 11:52:08 -07:00
Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6
2008-10-17 09:50:12 -07:00
add key_revoke() dummy for KEYS=n
2008-10-12 11:44:37 -07:00
klist: don't iterate over deleted entries
2008-10-09 08:56:04 +02:00
pm: rework disabling of user mode helpers during suspend/hibernation
2008-10-16 11:21:29 -07:00
KVM: ia64: Add intel iommu support for guests.
2008-10-15 14:25:39 +02:00
KVM: Separate irq ack notification out of arch/x86/kvm/irq.c
2008-10-15 14:25:35 +02:00
lcd: allow lcd device to handle mode change events
2008-09-23 22:01:33 +01:00
libata: reorder ata_device to remove 8 bytes of padding on 64 bits
2008-09-29 00:28:36 -04:00
integrity: special fs magic
2008-10-13 09:47:43 +11:00
block: implement extended dev numbers
2008-10-09 08:56:06 +02:00
Input: move map_to_7segment.h to include/linux
2008-10-10 23:16:16 -04:00
Unevictable LRU Infrastructure
2008-10-20 08:50:26 -07:00
memstick: fix MSProHG 8-bit interface mode support
2008-09-13 14:41:52 -07:00
vmscan: move isolate_lru_page() to vmscan.c
2008-10-20 08:50:25 -07:00
mlock: mlocked pages are unevictable
2008-10-20 08:52:30 -07:00
vmscan: kill unused lru functions
2008-10-20 08:52:31 -07:00
vmstat: mlocked pages statistics
2008-10-20 08:52:31 -07:00
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
2008-10-16 11:52:08 -07:00
driver core: basic infrastructure for per-module dynamic debug messages
2008-10-16 09:24:47 -07:00
include/linux/mount.h: remove CVS keyword
2008-10-16 11:21:30 -07:00
net: Rationalise email address: Network Specific Parts
2008-10-13 19:01:08 -07:00
netfilter: netns: remove nf_*_net() wrappers
2008-10-08 11:35:01 +02:00
ipsec: Put dumpers on the dump list
2008-10-01 07:03:24 -07:00
NFS: Fix the resolution problem with nfs_inode_attrs_need_update()
2008-10-14 19:23:17 -04:00
NFS: Clean up nfs_sb_active/nfs_sb_deactive
2008-10-06 20:08:26 -04:00
NFS: Add options for finer control of the lookup cache
2008-10-07 17:22:20 -04:00
NFS: Fix the resolution problem with nfs_inode_attrs_need_update()
2008-10-14 19:23:17 -04:00
cfg80211: Add new wireless regulatory infrastructure
2008-09-15 16:48:19 -04:00
of: Add new helper of_parse_phandles_with_args()
2008-10-13 10:55:47 +11:00
mlock: mlocked pages are unevictable
2008-10-20 08:52:30 -07:00
mm: page lock use lock bitops
2008-10-20 08:52:32 -07:00
Unevictable LRU Infrastructure
2008-10-20 08:50:26 -07:00
parport: remove CVS keywords
2008-10-16 11:21:49 -07:00
vfs: Use const for kernel parser table
2008-10-13 10:10:37 -07:00
PCI: fix compiler warnings in pci_get_subsys()
2008-09-16 15:52:08 -07:00
matroxfb: support G200eV chip
2008-10-16 11:21:45 -07:00
percpu counter: clean up percpu_counter_sum_and_set()
2008-10-09 12:50:59 -04:00
xfrm: MIGRATE enhancements (draft-ebalard-mext-pfkey-enhanced-migrate)
2008-10-05 13:33:42 -07:00
generic: make PFN_PHYS explicitly return phys_addr_t
2008-09-14 17:24:26 +02:00
Phonet: implement GPRS virtual interface over PEP socket
2008-10-05 11:16:16 -07:00
phylib: add mdiobus_{read,write}
2008-10-08 16:38:41 -07:00
pid_ns: kill the now unused task_child_reaper()
2008-10-16 11:21:48 -07:00
pkt_sched: Add multiqueue scheduler support
2008-09-12 16:29:34 -07:00
platform: add new device registration helper
2008-10-16 09:24:51 -07:00
include: replace __FUNCTION__ with __func__
2008-10-16 11:21:30 -07:00
pnp: make the resource type an unsigned long
2008-10-16 11:21:45 -07:00
powerpc: Remove remains of /proc/ppc_htab
2008-10-07 14:26:19 +11:00
profiling: dynamically enable readprofile at runtime
2008-10-16 11:21:31 -07:00
quota: remove CVS keywords
2008-10-16 11:21:46 -07:00
quota: remove CVS keywords
2008-10-16 11:21:46 -07:00
mm: tiny-shmem nommu fix
2008-10-02 15:53:13 -07:00
rcu: RCU-based detection of stalled CPUs for Classic RCU
2008-10-03 10:36:08 +02:00
rcu: add rcu_read_lock_sched() / rcu_read_unlock_sched()
2008-09-30 12:08:41 +02:00
include: replace __FUNCTION__ with __func__
2008-10-16 11:21:30 -07:00
vmscan: unevictable LRU scan sysctl
2008-10-20 08:52:31 -07:00
include: replace __FUNCTION__ with __func__
2008-10-16 11:21:30 -07:00
Phonet: global definitions
2008-09-22 19:51:15 -07:00
coredump_filter: add hugepage dumping
2008-10-20 08:52:32 -07:00
tty: Cris has a nice RS485 ioctl so we should steal it
2008-10-13 09:51:40 -07:00
serial: Make uart_port's ioport "unsigned long".
2008-10-13 09:51:39 -07:00
net: packet split receive api
2008-10-07 14:22:33 -07:00
smb.h: do not include linux/time.h in userspace
2008-09-23 08:09:13 -07:00
softirq: Add support for triggering softirq work on softirqs.
2008-10-17 08:46:56 +02:00
Phonet: implement GPRS virtual interface over PEP socket
2008-10-05 11:16:16 -07:00
include/linux/stacktrace.h: declare struct task_struct
2008-10-03 18:22:18 -07:00
[SCSI] lib: add generic helper to print sizes rounded to the correct SI range
2008-10-03 11:46:14 -05:00
vmscan: unevictable LRU scan sysctl
2008-10-20 08:52:31 -07:00
introduce generic header file for the software IO/TLB
2008-10-16 11:21:28 -07:00
sysctl: simplify ->strategy
2008-10-16 11:21:47 -07:00
kobject: Cleanup kobject_rename and !CONFIG_SYSFS
2008-10-16 09:24:52 -07:00
Remove Andrew Morton's old email accounts
2008-10-16 11:21:32 -07:00
tcp: kill pointless urg_mode
2008-10-07 14:43:06 -07:00
telephony: remove CVS keywords
2008-10-16 11:21:45 -07:00
tty: Add termiox
2008-10-13 09:51:40 -07:00
[CPUFREQ][5/6] cpufreq: Changes to get_cpu_idle_time_us(), used by ondemand governor
2008-10-09 13:52:44 -04:00
compat: generic compat get/settimeofday
2008-10-16 11:21:33 -07:00
tty: some ICANON magic is in the wrong places
2008-10-13 09:51:44 -07:00
Add an instance parameter devpts interfaces
2008-10-13 09:51:43 -07:00
generic: redefine resource_size_t as phys_addr_t
2008-09-14 17:24:27 +02:00
USB: anchor API changes needed for btusb
2008-10-17 14:41:02 -07:00
V4L/DVB (8649): v4l2: add AAC bitrate control
2008-10-12 09:36:49 -02:00
mm: rewrite vmap layer
2008-10-20 08:52:32 -07:00
mlock: count attempts to free mlocked page
2008-10-20 08:52:31 -07:00
tty: Remove more special casing and out of place code
2008-10-13 09:51:42 -07:00
wait: kill is_sync_wait()
2008-10-16 11:21:31 -07:00
[ARM] 5248/1: wm97xx generic battery driver
2008-10-02 22:48:34 +01:00
vfs: Add no_nrwrite_index_update writeback control flag
2008-10-16 10:09:17 -04:00
xfrm: MIGRATE enhancements (draft-ebalard-mext-pfkey-enhanced-migrate)
2008-10-05 13:33:42 -07:00
