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Diffstat (limited to 'Documentation/power/swsusp.txt')
| -rw-r--r-- | Documentation/power/swsusp.txt | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/Documentation/power/swsusp.txt b/Documentation/power/swsusp.txt index 7a6b7896645..ddf907fbcc0 100644 --- a/Documentation/power/swsusp.txt +++ b/Documentation/power/swsusp.txt @@ -311,3 +311,10 @@ As a rule of thumb use encrypted swap to protect your data while your system is shut down or suspended. Additionally use the encrypted suspend image to prevent sensitive data from being stolen after resume. + +Q: Why we cannot suspend to a swap file? + +A: Because accessing swap file needs the filesystem mounted, and +filesystem might do something wrong (like replaying the journal) +during mount. [Probably could be solved by modifying every filesystem +to support some kind of "really read-only!" option. Patches welcome.] |