Messages in this thread | | | Date | Mon, 5 Feb 2007 21:35:30 +0000 | From | Christoph Hellwig <> | Subject | Re: [patch 1/1] PM: Adds remount fs ro at suspend |
| |
On Tue, Feb 06, 2007 at 08:28:33AM +1100, Nigel Cunningham wrote: > Why do you think remounting filesystems is necessary? Are you getting > problems with some particular filesystem? > > If I recall correctly, we briefly tried remounting filesystems in > Suspend2, but it created problems with logging - some files open r/w > were readonly afterwards.
Yes, that's the biggest problem with the forced remount r/o hack - FMODE_WRITE is dropped from all files, and can't be recovered. (and at the same time in progress writes or writes through shared mmaps are totally ignored).
> We then tried bdev freezing with much better success.
Yes, that's the right thing to do if you want to be safe, but we already had that discussion..
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |