Re: [PATCH] Freezer: Fix JFFS2 garbage collector freezing issue (was: Re: JFFS2 garbage collection threads not freezing?)

[Rafael J. Wysocki]

On Saturday, 1 of December 2007, Rafael J. Wysocki wrote:
> On Friday, 30 of November 2007, Pete MacKay wrote:
[--snip--]
> ---
> Subject: Freezer: Fix JFFS2 garbage collector freezing issue
> From: Rafael J. Wysocki <[EMAIL PROTECTED]>
> 
> Fix breakage caused by commit d5d8c5976d6adeddb8208c240460411e2198b393
> "freezer: do not send signals to kernel threads" in
> jffs2_garbage_collect_thread() that assumed it would be sent signals
> by the freezer.
> 
> Signed-off-by: Rafael J. Wysocki <[EMAIL PROTECTED]>
> Cc: Pete MacKay <[EMAIL PROTECTED]>
> Cc: Andrew Morton <[EMAIL PROTECTED]>
> ---
>  fs/jffs2/background.c |    8 +++++---
>  1 file changed, 5 insertions(+), 3 deletions(-)
> 
> Index: linux-2.6/fs/jffs2/background.c
> ===================================================================
> --- linux-2.6.orig/fs/jffs2/background.c
> +++ linux-2.6/fs/jffs2/background.c
> @@ -103,15 +103,17 @@ static int jffs2_garbage_collect_thread(
>                  get there first. */
>               yield();
>  
> +             /* If system suspend is in progress, go to the refrigerator and
> +                start again when the suspend is done */
> +             if (try_to_freeze())
> +                     goto again;
> +

This still has the problem that, if the freeze request comes exactly here, the
loop below will not allow us to freeze.

>               /* Put_super will send a SIGKILL and then wait on the sem.
>                */
>               while (signal_pending(current)) {
>                       siginfo_t info;
>                       unsigned long signr;
>  
> -                     if (try_to_freeze())
> -                             goto again;
> -
>                       signr = dequeue_signal_lock(current, &current->blocked, 
> &info);
>  
>                       switch(signr) {
> --

I'll send another patch for this in a while.

Greetings,
Rafael
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/