[linux-mm-cc] compcache fills vmalloc memory

[John McCabe-Dansted]

Hi, I get the following error:
  xp at 7.10:~/bin$ sudo modprobe loop
  FATAL: Error inserting loop
(/lib/modules/2.6.22-14-generic/kernel/drivers/block/loop.ko): Cannot
allocate memory
  xp at 7.10:~/bin$ sudo umount compcache
  umount: compcache: not found
  xp at 7.10:~/bin$ sudo rmmod compcache
  ERROR: Module compcache is in use
  xp at 7.10:~/bin$ sudo swapoff compcache
  swapoff: compcache: No such file or directory
  xp at 7.10:~/bin$ sudo swapoff /dev/compcache
  xp at 7.10:~/bin$ sudo modprobe loop

The following appears to be the line in the syslog relating to why
loop wouldn't load:ko): Cannot allocate memory
allocation failed: out of vmalloc space - use vmalloc=<size> to increase size

They syslog was also filled with errors like the following:
Feb 26 21:09:06 ubuntu-xp kernel: [196046.926003] allocation failed:
out of vmalloc space - use vmalloc=<size> to increase size.
Feb 26 21:09:06 ubuntu-xp kernel: [196046.926009] compcache: Error
allocating memory for compressed page: 20631, size=2893
Feb 26 21:09:06 ubuntu-xp kernel: [196046.926015] Write-error on
swap-device (254:0:165056)
allocation failed: out of vmalloc space - use vmalloc=<size> to increase size.
compcache: Error allocating memory for compressed page: 20632, size=3195
Feb 26 22:37:36 ubuntu-xp kernel: [201352.547315] Write-error on
swap-device (254:0:165064)

-- 
John C. McCabe-Dansted
PhD Student
University of Western Australia
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