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J. Bruce Fields ffe1137ba7 nfsd4: delay filling in write iovec array till after xdr decoding 
Our server rejects compounds containing more than one write operation.
It's unclear whether this is really permitted by the spec; with 4.0,
it's possibly OK, with 4.1 (which has clearer limits on compound
parameters), it's probably not OK.  No client that we're aware of has
ever done this, but in theory it could be useful.

The source of the limitation: we need an array of iovecs to pass to the
write operation.  In the worst case that array of iovecs could have
hundreds of elements (the maximum rwsize divided by the page size), so
it's too big to put on the stack, or in each compound op.  So we instead
keep a single such array in the compound argument.

We fill in that array at the time we decode the xdr operation.

But we decode every op in the compound before executing any of them.  So
once we've used that array we can't decode another write.

If we instead delay filling in that array till the time we actually
perform the write, we can reuse it.

Another option might be to switch to decoding compound ops one at a
time.  I considered doing that, but it has a number of other side
effects, and I'd rather fix just this one problem for now.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2012-11-26 09:08:15 -05:00
..
ABI SCSI misc on 20121012 2012-10-13 10:57:01 +09:00
accounting doc: getdelays.c: remember to close() socket on error in create_nl_socket() 2012-09-01 09:58:59 -07:00
acpi Update documentation for parameter *notrigger* in einj.txt 2012-03-30 03:30:19 -04:00
aoe aoe: update documentation to better reflect aoe-plus-udev usage 2012-10-06 03:05:30 +09:00
arm Merge branch 'fixes' into for-linus 2012-10-11 10:55:04 +01:00
arm64 arm64: MMU definitions 2012-09-17 13:41:56 +01:00
auxdisplay
backlight backlight: new backlight driver for LP855x devices 2012-03-23 16:58:33 -07:00
blackfin Documentation: Fix typo in multiple files in Documentation 2012-04-16 14:37:13 +02:00
block block: Kill bi_destructor 2012-09-09 10:35:39 +02:00
blockdev Documentation: remove references to /etc/modprobe.conf 2012-03-30 16:03:15 -07:00
cdrom doc: fix broken references 2011-09-27 18:08:04 +02:00
cgroups memcg: trivial fixes for Documentation/cgroups/memory.txt 2012-10-09 16:22:54 +09:00
connector connector: Move cn_test.c away from NLMSG_PUT(). 2012-06-26 21:19:02 -07:00
console
cpu-freq acpi-cpufreq: Add support for disabling dynamic overclocking 2012-09-09 22:05:12 +02:00
cpuidle Honor state disabling in the cpuidle ladder governor 2012-09-04 01:35:44 +02:00
cris CRIS: Update documentation 2012-04-03 13:09:18 +02:00
crypto KEYS: Document asymmetric key type 2012-10-08 13:50:12 +10:30
development-process Documentation: Update stable address 2011-12-12 14:14:31 -08:00
device-mapper DM RAID: Add rebuild capability for RAID10 2012-10-11 13:40:24 +11:00
devicetree Merge branch 'i2c-embedded/for-next' of git://git.pengutronix.de/git/wsa/linux 2012-10-11 10:27:51 +09:00
DocBook Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media 2012-10-18 16:10:42 -07:00
driver-model pwm: add devm_pwm_get() and devm_pwm_put() 2012-09-10 17:05:45 +02:00
dvb get_dvb_firmware: fix download site for tda10046 firmware 2012-09-28 16:16:00 -03:00
early-userspace
EDID drm: allow loading an EDID as firmware to override broken monitor 2012-03-20 10:09:28 +00:00
extcon Documentation/extcon: porting guide for Android kernel switch driver. 2012-04-20 09:24:27 -07:00
fault-injection fault-injection: add tool to run command with failslab or fail_page_alloc 2012-07-30 17:25:22 -07:00
fb Documentation: remove references to /etc/modprobe.conf 2012-03-30 16:03:15 -07:00
filesystems nfsd4: delay filling in write iovec array till after xdr decoding 2012-11-26 09:08:15 -05:00
firmware_class
frv doc: fix broken references 2011-09-27 18:08:04 +02:00
hid HID: sensors: add documentation 2012-09-06 19:11:04 +01:00
hwmon hwmon: (coretemp) Add support for Atom CE4110/4150/4170 2012-10-14 15:21:33 -07:00
i2c i2c-mux-gpio: Update documentation 2012-10-05 22:23:54 +02:00
i2o Documentation: Fix multiple typo in Documentation 2012-03-07 16:08:24 +01:00
ia64 doc: aliasing-test: close fd on write error 2012-09-01 09:57:10 -07:00
ide Documentation: remove references to /etc/modprobe.conf 2012-03-30 16:03:15 -07:00
infiniband IB/ipoib: Add rtnl_link_ops support 2012-09-20 16:49:17 -04:00
input Input: add driver for FT5x06 based EDT displays 2012-07-24 23:55:03 -07:00
ioctl ioctl-number.txt: Remove legacy private ioctl's from media drivers 2012-08-14 00:07:39 -03:00
isdn Documentation: remove references to /etc/modprobe.conf 2012-03-30 16:03:15 -07:00
ja_JP Merge branch 'driver-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6 2011-07-25 23:06:24 -07:00
kbuild UAPI: Remove the objhdr-y export list 2012-10-02 18:01:56 +01:00
kdump kexec: update URL of kexec homepage 2012-07-18 18:35:57 -07:00
ko_KR driver-core: documentation: fix up Greg's email address 2012-02-15 14:48:01 -08:00
laptops Documentation: fix the VM knobs descritpion WRT pdflush 2012-08-04 12:15:09 +04:00
leds leds-lp5523: add channel name in the platform data 2012-09-11 18:32:41 +08:00
m68k Documentation: add pointer to name_to_dev_t for root= values 2011-08-03 14:25:21 -10:00
make
memory-devices memory: emif: add basic infrastructure for EMIF driver 2012-05-02 00:10:49 -07:00
mips
misc-devices lis3lv02d: Add STMicroelectronics lis331dlh digital accelerometer 2012-09-05 13:44:04 -07:00
mmc mmc: core: Fixup delayed work clock gating patch 2012-01-11 23:58:43 -05:00
mn10300
mtd
namespaces
netlabel
networking vxlan: virtual extensible lan 2012-10-01 18:39:45 -04:00
nfc NFC: Error management documentation 2012-07-09 16:42:11 -04:00
parisc Documentation: Fix typo in multiple files in Documentation 2012-04-16 14:37:13 +02:00
PCI doc: fix broken references 2011-09-27 18:08:04 +02:00
pcmcia
power 1. New drivers: 2012-10-07 17:29:24 +09:00
powerpc Revert "powerpc/hw-breakpoint: Use generic hw-breakpoint interfaces for new PPC ptrace flags" 2012-05-22 14:37:24 +10:00
pps
prctl security: Minor improvements to no_new_privs documentation 2012-07-08 00:25:48 +10:00
pti Kernel documentation for the PTI feature. 2011-05-13 16:31:00 -07:00
ptp ptp: Added a brand new class driver for ptp clocks. 2011-05-23 13:01:00 -07:00
rapidio RapidIO: documentation update 2011-11-02 16:07:02 -07:00
RCU Merge branches 'bigrt.2012.09.23a', 'doctorture.2012.09.23a', 'fixes.2012.09.23a', 'hotplug.2012.09.23a' and 'idlechop.2012.09.23a' into HEAD 2012-09-24 20:02:22 -07:00
s390 Documentation: remove references to /etc/modprobe.conf 2012-03-30 16:03:15 -07:00
scheduler sched: Remove __ARCH_WANT_INTERRUPTS_ON_CTXSW 2012-09-13 16:52:04 +02:00
scsi [SCSI] megaraid_sas: Version, Changelog, Copyright update 2012-10-09 11:21:48 +01:00
security Merge branch 'modules-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux 2012-10-14 13:39:34 -07:00
serial firmware: remove computone driver firmware and documentation 2012-08-16 12:31:18 -07:00
sh
sound Merge branch 'topic/tlv-chmap' into for-next 2012-09-15 16:32:31 +02:00
spi spi: Updates for v3.7 2012-10-02 17:26:42 -07:00
sysctl coredump: add support for %d=__get_dumpable() in core name 2012-10-06 03:05:15 +09:00
target target: Simplify fabric sense data length handling 2012-09-17 17:12:58 -07:00
telephony
thermal hwmon: exynos4: move thermal sensor driver to driver/thermal directory 2012-09-24 14:44:38 +08:00
timers doc: fix broken references 2011-09-27 18:08:04 +02:00
trace doc: fix old config name of kprobetrace 2012-09-27 12:11:29 +02:00
usb usb: add decriptor of persist fail for some morph usb devices 2012-08-10 12:06:39 -07:00
vDSO Document the vDSO and add a reference parser 2011-07-14 17:57:09 -07:00
video4linux [media] media: v4l2-ctrl: add a helper function to add standard control with driver specific menu 2012-10-05 21:48:03 -03:00
virtual Merge branch 'for-linus-37rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml 2012-10-10 11:15:20 +09:00
vm mm: remove vma arg from page_evictable 2012-10-09 16:22:55 +09:00
w1 1-Wire: Add support for the maxim ds1825 temperature sensor 2012-08-16 12:33:59 -07:00
watchdog watchdog: fix watchdog-test.c build warning 2012-08-29 17:12:58 +02:00
wimax
x86 x86/mce: Provide boot argument to honour bios-set CMCI threshold 2012-09-27 10:08:00 -07:00
zh_CN Documentation: Fixes some translation error in Documentation/zh_CN/gpio.txt 2012-09-26 13:12:32 -07:00
.gitignore
00-INDEX prio_tree: remove 2012-10-09 16:22:40 +09:00
applying-patches.txt
atomic_ops.txt doc: Add load/store guarantees to Documentation/atomic-ops.txt 2011-12-11 10:31:58 -08:00
bad_memory.txt
basic_profiling.txt
binfmt_misc.txt
braille-console.txt
bt8xxgpio.txt
btmrvl.txt
BUG-HUNTING
bus-virt-phys-mapping.txt doc: fix broken references 2011-09-27 18:08:04 +02:00
cachetlb.txt mm: convert mm->cpu_vm_cpumask into cpumask_var_t 2011-05-25 08:39:21 -07:00
Changes Documentation/Changes: remove some really obsolete text 2011-07-11 16:48:38 -07:00
circular-buffers.txt
clk.txt Documentation: common clk API 2012-03-16 20:35:01 +00:00
coccinelle.txt coccinelle.txt: update documentation to include M= option 2012-01-14 22:25:56 +01:00
CodingStyle CodingStyle: add networking specific block comment style 2012-10-06 03:04:59 +09:00
cpu-hotplug.txt documentation: remove references to cpu_*_map. 2012-03-29 15:38:31 +10:30
cpu-load.txt
cputopology.txt
crc32.txt crc32: move long comment about crc32 fundamentals to Documentation/ 2012-03-23 16:58:37 -07:00
dcdbas.txt
debugging-modules.txt
debugging-via-ohci1394.txt
dell_rbu.txt
devices.txt Doc: document max raw dev number 2012-06-03 12:05:50 +02:00
digsig.txt crypto: digital signature verification support 2011-11-09 12:10:37 +02:00
DMA-API-HOWTO.txt Documentation/DMA-API-HOWTO.txt: fix misleading example 2011-07-26 16:49:45 -07:00
DMA-API.txt include/linux/dma-mapping.h: add dma_zalloc_coherent() 2011-11-02 16:07:02 -07:00
DMA-attributes.txt common: DMA-mapping: add DMA_ATTR_SKIP_CPU_SYNC attribute 2012-07-30 12:25:47 +02:00
dma-buf-sharing.txt dma-buf: add initial vmap documentation 2012-05-25 12:51:11 +05:30
DMA-ISA-LPC.txt
dmaengine.txt Documentation: Fix multiple typo in Documentation 2012-03-07 16:08:24 +01:00
dontdiff Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2012-10-01 09:06:36 -07:00
dynamic-debug-howto.txt dynamic_debug: update Documentation/*, Kconfig.debug 2012-04-30 16:26:30 -04:00
edac.txt Merge branch 'devel' 2012-07-29 21:11:05 -03:00
eisa.txt MCA: delete all remaining traces of microchannel bus support. 2012-05-17 19:06:13 -04:00
email-clients.txt Documentation: email-clients: Add better Thunderbird information 2011-08-13 18:34:03 -07:00
flexible-arrays.txt
futex-requeue-pi.txt
gcov.txt
gpio.txt gpio: add flags to export GPIOs when requesting 2012-04-05 21:24:06 -07:00
highuid.txt
HOWTO docs: update HOWTO for 2.6.x -> 3.x versioning 2012-04-19 19:13:08 -07:00
hw_random.txt
hwspinlock.txt hwspinlock/core: register a bank of hwspinlocks in a single API call 2011-09-21 19:45:34 +03:00
init.txt
initrd.txt Documentation/initrd.txt: Change the location of util-linux 2012-05-25 16:18:34 +02:00
Intel-IOMMU.txt
intel_txt.txt
io-mapping.txt
io_ordering.txt
iostats.txt
IPMI.txt IPMI: Remove SMBus driver info from the docs 2012-10-16 18:07:12 -07:00
IRQ-affinity.txt bitmap, irq: add smp_affinity_list interface to /proc/irq 2011-05-25 08:39:45 -07:00
IRQ-domain.txt irq_domain: Standardise legacy/linear domain selection 2012-07-11 14:59:17 +01:00
IRQ.txt
irqflags-tracing.txt
isapnp.txt
java.txt
kernel-doc-nano-HOWTO.txt
kernel-docs.txt doc: fix broken references 2011-09-27 18:08:04 +02:00
kernel-parameters.txt Merge branch 'modules-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux 2012-10-14 13:39:34 -07:00
kmemcheck.txt
kmemleak.txt kmemleak: Handle percpu memory allocation 2011-12-02 16:12:42 +00:00
kobject.txt Documentation: Fix "struct kobj_type" to include newer members. 2012-09-04 16:06:34 -07:00
kprobes.txt
kref.txt
ldm.txt
local_ops.txt
lockdep-design.txt lockdep: Update documentation for lock-class leak detection 2011-12-11 10:31:23 -08:00
lockstat.txt Documentation: Add statistics about nested locks 2011-05-28 17:03:29 +02:00
lockup-watchdogs.txt watchdog: Update documentation 2012-02-11 15:11:28 +01:00
logo.gif
logo.txt
magic-number.txt drivers/net: fix up stale paths from driver reorg 2012-01-30 12:54:40 -05:00
Makefile mei: move doc files Documentation/misc-devices/mei 2012-05-09 13:59:09 -07:00
ManagementStyle Documentation: ManagementStyle: fixed typo 2012-06-28 12:03:15 +02:00
md.txt md: create externally visible flags for supporting hot-replace. 2011-12-23 10:17:51 +11:00
media-framework.txt [media] media: Add link_validate() op to check links to the sink pad 2012-05-14 08:44:11 -03:00
memory-barriers.txt doc: fix broken references 2011-09-27 18:08:04 +02:00
memory-hotplug.txt Documentation: Fix typo in multiple files in Documentation 2012-04-16 14:37:13 +02:00
mono.txt Documentation: remove references to /etc/modprobe.conf 2012-03-30 16:03:15 -07:00
mutex-design.txt
nommu-mmap.txt
numastat.txt Doc: Update numastat.txt 2012-02-28 16:05:06 +01:00
oops-tracing.txt module,bug: Add TAINT_OOT_MODULE flag for modules not built in-tree 2011-11-07 07:54:42 +10:30
padata.txt
parport-lowlevel.txt
parport.txt Documentation: remove references to /etc/modprobe.conf 2012-03-30 16:03:15 -07:00
percpu-rw-semaphore.txt percpu-rw-semaphore: fix documentation typos 2012-09-26 19:56:15 +02:00
pi-futex.txt
pinctrl.txt pinctrl: document semantics vs GPIO 2012-09-17 10:53:57 +02:00
pnp.txt
preempt-locking.txt
printk-formats.txt lib/vsprintf: update documentation to cover all of %p[Mm][FR] 2012-10-06 03:04:50 +09:00
pwm.txt pwm: add devm_pwm_get() and devm_pwm_put() 2012-09-10 17:05:45 +02:00
ramoops.txt pstore/ftrace: Convert to its own enable/disable debugfs knob 2012-09-06 22:16:58 -07:00
rbtree.txt rbtree: move augmented rbtree functionality to rbtree_augmented.h 2012-10-09 16:22:40 +09:00
remoteproc.txt remoteproc: add rproc_report_crash function to notify rproc crashes 2012-09-18 12:53:22 +03:00
rfkill.txt doc: fix broken references 2011-09-27 18:08:04 +02:00
robust-futex-ABI.txt
robust-futexes.txt
rpmsg.txt rpmsg: add virtio-based remote processor messaging bus 2012-02-08 22:53:58 +02:00
rt-mutex-design.txt
rt-mutex.txt
rtc.txt rtc-proc: permit the /proc/driver/rtc device to use other devices 2012-10-06 03:05:01 +09:00
SAK.txt
SecurityBugs
serial-console.txt
sgi-ioc4.txt
sgi-visws.txt
SM501.txt
smsc_ece1099.txt mfd: smsc: Add support for smsc gpio io/keypad driver 2012-10-01 15:27:48 +02:00
sparse.txt
spinlocks.txt Documentation/spinlocks.txt: Remove reference to sti()/cli() 2011-07-11 12:45:04 -07:00
stable_api_nonsense.txt
stable_kernel_rules.txt stable: Allow merging of backports for serious user-visible performance issues 2012-06-25 12:11:58 -07:00
static-keys.txt Documentation: Fix typo in multiple files in Documentation 2012-04-16 14:37:13 +02:00
SubmitChecklist Documentation/SubmitChecklist: add RCU debug config options 2011-07-25 20:57:17 -07:00
SubmittingDrivers Documentation: SubmittingDrivers: fix Linus's git tree URL 2011-08-13 18:34:03 -07:00
SubmittingPatches Documentation/SubmittingPatches: suggested the use of scripts/get_maintainer.pl 2012-05-25 16:18:30 +02:00
svga.txt
sysfs-rules.txt
sysrq.txt sparc64: Add global PMU register dumping via sysrq. 2012-10-16 09:34:01 -07:00
unaligned-memory-access.txt
unicode.txt
unshare.txt
vfio.txt vfio: Trivial Documentation correction 2012-09-21 10:48:03 -06:00
VGA-softcursor.txt
vgaarbiter.txt misc latin1 to utf8 conversions 2012-01-02 13:04:55 +01:00
video-output.txt
vme_api.txt VME: Move API documentation to Documentation folder 2012-05-08 16:01:34 -07:00
volatile-considered-harmful.txt
workqueue.txt workqueue: reimplement WQ_HIGHPRI using a separate worker_pool 2012-07-13 22:24:45 -07:00
xz.txt
zorro.txt