Re: [linux-pm] Re: [PATCH] Remove process freezer from suspend to RAMpathway

[Paul Mackerras]

Miklos Szeredi writes:

> That's weird, I never had a suspend problem due to a fuse mount,
> though I have them all the time.  And I suspect, that even the sync()

Well, I don't either, because we don't freeze processes on
powerbooks.  But I have heard that other people have problems with
suspending with a fuse filesystem mounted.  Maybe the difference is
whether or not the filesystem is writable?

> thing that suspend does is not the real cause, because sync() actually
> does nothing in fuse filesystems.

It's not the filesystem sync method, as I understand it, it's that if
there are dirty pages in the page cache for files on the fuse
filesystem, the system will initiate a write-out on them and wait for
it to finish.  But if the fuse userspace is frozen, the write-out will
never complete.

Paul.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/