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Bug 174000 - Should umount tmpfs before swapoff
Summary: Should umount tmpfs before swapoff
Alias: None
Product: Fedora
Classification: Fedora
Component: initscripts
Version: rawhide
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Bill Nottingham
QA Contact: Brock Organ
Depends On:
Blocks: FC5Target
TreeView+ depends on / blocked
Reported: 2005-11-23 15:24 UTC by Russell Coker
Modified: 2014-03-17 02:57 UTC (History)
3 users (show)

Fixed In Version: 8.26-1
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2006-02-07 12:46:14 UTC

Attachments (Terms of Use)

Description Russell Coker 2005-11-23 15:24:14 UTC
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (compatible; Konqueror/3.4; Linux) KHTML/3.4.92 (like Gecko)

Description of problem:
The contents of a tmpfs file system may be paged out.  Paged out memory is 
paged in at swapoff time, while the contents of a tmpfs are discarded when it 
is umounted. 
Putting "umount -a -t tmpfs" before the swapoff line in /etc/rc.d/init.d/halt 
can potentially save hundreds of megs of data from being needlessly read from 
disk.  This can save battery on a laptop and will save time on any machine 
while not providing any disadvantage. 
If the amount of data stored on the tmpfs file system is greater than the size 
of physical memory then swapoff isn't going to work. 

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:

Additional info:

Comment 1 Miloslav Trmač 2006-02-07 12:46:14 UTC
Fixed in initscripts-8.26-1.  Thanks for your report.

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