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PM / hibernate: Documentation: Fix script for unswapping

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System can have mmaped also character devices (e.g dri devices by X) or deleted
files. Running cat on character devices is really bad idea (system can hang) so
run cat only on regular files. Also mmaped files can have spaces in filenames.

Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
[rjw: Subject]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Pali Rohár 2014-05-06 13:01:56 +02:00 committed by Rafael J. Wysocki
parent aa9abe2c8e
commit 8a54cd5bd6
1 changed files with 4 additions and 1 deletions
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5
Documentation/power/swsusp.txt
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@ -220,7 +220,10 @@ Q: After resuming, system is paging heavily, leading to very bad interactivity.
A: Try running
cat `cat /proc/[0-9]*/maps | grep / | sed 's:.* /:/:' | sort -u` > /dev/null
cat /proc/[0-9]*/maps | grep / | sed 's:.* /:/:' | sort -u | while read file
do
test -f "$file" && cat "$file" > /dev/null
done
after resume. swapoff -a; swapon -a may also be useful.