[Bug 24330] Re: CIFS mount blocks suspend/hibernate

[Chris J Arges]

Test setup:
t420 with a wireless connection and a cifs share on another machine
vanilla natty (2.6.38-8-generic)
sudo apt-get install cifs-utils
mount -t cifs //192.168.1.102/test /mnt -o user=$USER

Test cases:

* mount with no activity
	sudo fwts --s3-multiple=5 s3
	result: suspend / resume works with a cifs share mounted

* mount with reads
	while true; do cat /mnt/hello > /dev/null; done &
	sudo fwts s3
	result: suspend fails, get 'Freezing of tasks failed...' computer is responsive.

* mount with writes
	while true; do cat /dev/urandom > /mnt/rnd; done &
	sudo fwts s3
	result: suspend fails, and computer becomes unresponsive

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https://bugs.launchpad.net/bugs/24330

Title:
  CIFS mount blocks suspend/hibernate

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