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| author | Pali Rohár <pali.rohar@gmail.com> | 2014-05-06 13:01:56 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2014-05-07 01:51:16 +0200 |
| commit | 8a54cd5bd6ebf009b96ec79510b593f7ba5c0ff3 (patch) | |
| tree | 3ca0ab1a76dec969fabf3e2adb97d1842b0de4dd /Documentation/power | |
| parent | aa9abe2c8eddf426c9b89757129b132c484ee223 (diff) | |
| download | lwn-8a54cd5bd6ebf009b96ec79510b593f7ba5c0ff3.tar.gz lwn-8a54cd5bd6ebf009b96ec79510b593f7ba5c0ff3.zip | |
PM / hibernate: Documentation: Fix script for unswapping
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>
Diffstat (limited to 'Documentation/power')
| -rw-r--r-- | Documentation/power/swsusp.txt | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/Documentation/power/swsusp.txt b/Documentation/power/swsusp.txt index 079160e22bcc..f732a8321e8a 100644 --- a/Documentation/power/swsusp.txt +++ b/Documentation/power/swsusp.txt @@ -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. |