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SubjectRe: remount reiserfs hangs under heavy load 2.4.20pre5

I upgraded to 2.4.20-pre7 and the problem seems to have gone away.


Thanks,
Jeff
[ jchua@fedex.com ]

On Mon, 9 Sep 2002, Oleg Drokin wrote:

> Hello!
>
> On Fri, Sep 06, 2002 at 11:35:16PM +0800, Jeff Chua wrote:
> > > > Whenever "mount -o remount -n -w /dev/hdax" is issued under disk
> > > > activities, the system would freezed, and had to be hard booted.
> > > What kind of disk activies?
> > Activities such as compiling the kernel or rcp large files on /dev/hda3
> > > What was mount status of filesystems before that command was it readonly
> > > mounted ?
> > Yes, read-only on /dev/hda2, trying to change to read-write.
>
> Hm. Well, I have not found this same bug as you describe but a very similar
> problem.
> Can you please try patch below and see it it helps in your situation too?
> It should apply to almost anything including 2.4.19 and 2.4.20-pre5.
>
> Thank you.
>
> Bye,
> Oleg
>
>
> ===== super.c 1.23 vs edited =====
> --- 1.23/fs/reiserfs/super.c Mon Sep 9 14:41:12 2002
> +++ edited/super.c Mon Sep 9 17:48:55 2002
> @@ -664,7 +664,7 @@
> }
>
> if (*mount_flags & MS_RDONLY) {
> - /* remount rean-only */
> + /* remount read-only */
> if (s->s_flags & MS_RDONLY)
> /* it is read-only already */
> return 0;
> @@ -680,6 +680,10 @@
> journal_mark_dirty(&th, s, SB_BUFFER_WITH_SB (s));
> s->s_dirt = 0;
> } else {
> + /* remount read-write */
> + if (!(s->s_flags & MS_RDONLY))
> + return 0; /* We are read-write already */
> +
> s->u.reiserfs_sb.s_mount_state = sb_state(rs) ;
> s->s_flags &= ~MS_RDONLY ; /* now it is safe to call journal_begin */
> journal_begin(&th, s, 10) ;
>

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