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authorPavel Machek <pavel@ucw.cz>2005-09-03 15:56:56 -0700
committerLinus Torvalds <torvalds@evo.osdl.org>2005-09-05 00:06:14 -0700
commit7e958883bced7e435f5a76349e15684858d3477c (patch)
treed5b5a670c5917825ac08a67cb9efd0e64afe9799 /Documentation/power/swsusp.txt
parent7dc24db1757f950f8bd21b7191106d4bf5134be7 (diff)
[PATCH] suspend: update documentation
Update suspend documentation. Signed-off-by: Pavel Machek <pavel@suse.cz> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'Documentation/power/swsusp.txt')
-rw-r--r--Documentation/power/swsusp.txt7
1 files changed, 7 insertions, 0 deletions
diff --git a/Documentation/power/swsusp.txt b/Documentation/power/swsusp.txt
index 7a6b78966459..ddf907fbcc05 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.]