Revision 97db39a1f6f69e906e98118392400de5217aa33a authored by Eric Sandeen on 27 July 2009, 02:52:01 UTC, committed by Felix Blyakher on 31 July 2009, 05:56:58 UTC
commit 6321e3ed2acf3ee9643cdd403e1c88605d7944ba caused
the full bmv_count's worth of getbmapx structures to get
allocated; telling it to do MAXEXTNUM was a bit insane,
resulting in ENOMEM every time.

Chop it down to something reasonable, the number of slots
in the caller's input buffer.  If this is too large the
caller may get ENOMEM but the reason should not be a
mystery, and they can try again with something smaller.

We add 1 to the value because in the normal getbmap
world, bmv_count includes the header and xfs_getbmap does:

        nex = bmv->bmv_count - 1;
        if (nex <= 0)
                return XFS_ERROR(EINVAL);

Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
Reviewed-by: Olaf Weber <olaf@sgi.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Felix Blyakher <felixb@sgi.com>
1 parent fd40261
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ABI
DocBook
PCI
RCU
accounting
acpi
aoe
arm
auxdisplay
blackfin
block
blockdev
cdrom
cgroups
connector
console
cpu-freq
cpuidle
cris
crypto
development-process
device-mapper
driver-model
dvb
early-userspace
fault-injection
fb
filesystems
firmware_class
frv
hwmon
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i2o
ia64
ide
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ioctl
isdn
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kbuild
kdump
ko_KR
laptops
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m68k
make
mips
misc-devices
mn10300
mtd
namespaces
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pcmcia
power
powerpc
prctl
s390
scheduler
scsi
serial
sh
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sparc
spi
sysctl
telephony
thermal
timers
trace
uml
usb
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vm
w1
watchdog
wimax
x86
zh_CN
00-INDEX -rw-r--r-- 11.8 KB
BUG-HUNTING -rw-r--r-- 8.1 KB
Changes -rw-r--r-- 11.5 KB
CodingStyle -rw-r--r-- 29.1 KB
DMA-API.txt -rw-r--r-- 28.2 KB
DMA-ISA-LPC.txt -rw-r--r-- 5.2 KB
DMA-attributes.txt -rw-r--r-- 1.3 KB
DMA-mapping.txt -rw-r--r-- 27.3 KB
HOWTO -rw-r--r-- 28.6 KB
IO-mapping.txt -rw-r--r-- 7.9 KB
IPMI.txt -rw-r--r-- 27.0 KB
IRQ-affinity.txt -rw-r--r-- 2.1 KB
IRQ.txt -rw-r--r-- 962 bytes
Intel-IOMMU.txt -rw-r--r-- 3.9 KB
Makefile -rw-r--r-- 143 bytes
ManagementStyle -rw-r--r-- 12.9 KB
SAK.txt -rw-r--r-- 2.8 KB
SELinux.txt -rw-r--r-- 1.0 KB
SM501.txt -rw-r--r-- 2.8 KB
SecurityBugs -rw-r--r-- 1.8 KB
Smack.txt -rw-r--r-- 21.6 KB
SubmitChecklist -rw-r--r-- 3.5 KB
SubmittingDrivers -rw-r--r-- 6.2 KB
SubmittingPatches -rw-r--r-- 25.4 KB
VGA-softcursor.txt -rw-r--r-- 2.0 KB
applying-patches.txt -rw-r--r-- 19.5 KB
atomic_ops.txt -rw-r--r-- 19.0 KB
bad_memory.txt -rw-r--r-- 1.1 KB
basic_profiling.txt -rw-r--r-- 1.7 KB
binfmt_misc.txt -rw-r--r-- 6.0 KB
braille-console.txt -rw-r--r-- 1.4 KB
bt8xxgpio.txt -rw-r--r-- 4.3 KB
c2port.txt -rw-r--r-- 2.8 KB
cachetlb.txt -rw-r--r-- 15.9 KB
cpu-hotplug.txt -rw-r--r-- 14.6 KB
cpu-load.txt -rw-r--r-- 3.0 KB
cputopology.txt -rw-r--r-- 2.9 KB
credentials.txt -rw-r--r-- 20.4 KB
dcdbas.txt -rw-r--r-- 3.6 KB
debugging-modules.txt -rw-r--r-- 954 bytes
debugging-via-ohci1394.txt -rw-r--r-- 7.5 KB
dell_rbu.txt -rw-r--r-- 4.9 KB
devices.txt -rw-r--r-- 115.4 KB
dmaengine.txt -rw-r--r-- 42 bytes
dontdiff -rw-r--r-- 1.9 KB
dynamic-debug-howto.txt -rw-r--r-- 8.4 KB
edac.txt -rw-r--r-- 20.8 KB
eisa.txt -rw-r--r-- 7.1 KB
email-clients.txt -rw-r--r-- 9.0 KB
exception.txt -rw-r--r-- 12.1 KB
feature-removal-schedule.txt -rw-r--r-- 16.2 KB
futex-requeue-pi.txt -rw-r--r-- 5.0 KB
gpio.txt -rw-r--r-- 25.5 KB
highuid.txt -rw-r--r-- 2.4 KB
hw_random.txt -rw-r--r-- 3.5 KB
ics932s401 -rw-r--r-- 1018 bytes
initrd.txt -rw-r--r-- 14.1 KB
io-mapping.txt -rw-r--r-- 3.2 KB
io_ordering.txt -rw-r--r-- 1.9 KB
iostats.txt -rw-r--r-- 7.9 KB
irqflags-tracing.txt -rw-r--r-- 2.6 KB
isapnp.txt -rw-r--r-- 433 bytes
java.txt -rw-r--r-- 10.7 KB
kernel-doc-nano-HOWTO.txt -rw-r--r-- 11.1 KB
kernel-docs.txt -rw-r--r-- 34.8 KB
kernel-parameters.txt -rw-r--r-- 82.9 KB
keys-request-key.txt -rw-r--r-- 7.4 KB
keys.txt -rw-r--r-- 46.2 KB
kmemleak.txt -rw-r--r-- 6.2 KB
kobject.txt -rw-r--r-- 16.9 KB
kprobes.txt -rw-r--r-- 21.9 KB
kref.txt -rw-r--r-- 6.2 KB
ldm.txt -rw-r--r-- 3.9 KB
leds-class.txt -rw-r--r-- 3.8 KB
local_ops.txt -rw-r--r-- 6.1 KB
lockdep-design.txt -rw-r--r-- 8.8 KB
lockstat.txt -rw-r--r-- 7.9 KB
logo.gif -rw-r--r-- 16.0 KB
logo.txt -rw-r--r-- 563 bytes
magic-number.txt -rw-r--r-- 9.7 KB
markers.txt -rw-r--r-- 4.2 KB
mca.txt -rw-r--r-- 11.3 KB
md.txt -rw-r--r-- 20.8 KB
memory-barriers.txt -rw-r--r-- 79.6 KB
memory-hotplug.txt -rw-r--r-- 14.0 KB
memory.txt -rw-r--r-- 2.1 KB
mono.txt -rw-r--r-- 2.5 KB
mutex-design.txt -rw-r--r-- 5.8 KB
nmi_watchdog.txt -rw-r--r-- 4.2 KB
nommu-mmap.txt -rw-r--r-- 11.2 KB
numastat.txt -rw-r--r-- 861 bytes
oops-tracing.txt -rw-r--r-- 12.3 KB
parport-lowlevel.txt -rw-r--r-- 32.2 KB
parport.txt -rw-r--r-- 8.8 KB
pi-futex.txt -rw-r--r-- 5.7 KB
pnp.txt -rw-r--r-- 6.8 KB
preempt-locking.txt -rw-r--r-- 5.2 KB
printk-formats.txt -rw-r--r-- 1.0 KB
prio_tree.txt -rw-r--r-- 5.2 KB
rbtree.txt -rw-r--r-- 6.6 KB
rfkill.txt -rw-r--r-- 26.2 KB
robust-futex-ABI.txt -rw-r--r-- 8.7 KB
robust-futexes.txt -rw-r--r-- 9.4 KB
rt-mutex-design.txt -rw-r--r-- 32.8 KB
rt-mutex.txt -rw-r--r-- 3.5 KB
rtc.txt -rw-r--r-- 15.1 KB
serial-console.txt -rw-r--r-- 4.0 KB
sgi-ioc4.txt -rw-r--r-- 2.0 KB
sgi-visws.txt -rw-r--r-- 678 bytes
slow-work.txt -rw-r--r-- 5.4 KB
sparse.txt -rw-r--r-- 3.1 KB
spinlocks.txt -rw-r--r-- 8.8 KB
stable_api_nonsense.txt -rw-r--r-- 9.2 KB
stable_kernel_rules.txt -rw-r--r-- 2.8 KB
svga.txt -rw-r--r-- 14.1 KB
sysfs-rules.txt -rw-r--r-- 8.1 KB
sysrq.txt -rw-r--r-- 11.4 KB
tomoyo.txt -rw-r--r-- 2.2 KB
unaligned-memory-access.txt -rw-r--r-- 10.0 KB
unicode.txt -rw-r--r-- 6.5 KB
unshare.txt -rw-r--r-- 13.1 KB
video-output.txt -rw-r--r-- 1.1 KB
volatile-considered-harmful.txt -rw-r--r-- 5.6 KB
voyager.txt -rw-r--r-- 3.4 KB
zorro.txt -rw-r--r-- 2.8 KB

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