Re: [PATCH 3/4] jbd: abort when failed to log metadata buffers(rebased)

[Jan Kara]

On Wed 14-05-08 13:49:51, Hidehiro Kawai wrote:
> Subject: [PATCH 3/4] jbd: abort when failed to log metadata buffers
> 
> If we failed to write metadata buffers to the journal space and
> succeeded to write the commit record, stale data can be written
> back to the filesystem as metadata in the recovery phase.
> 
> To avoid this, when we failed to write out metadata buffers,
> abort the journal before writing the commit record.
> 
> Signed-off-by: Hidehiro Kawai <hidehiro.kawai.ez@xxxxxxxxxxx>
> ---
>  fs/jbd/commit.c |    3 +++
>  1 file changed, 3 insertions(+)
> 
> Index: linux-2.6.26-rc2/fs/jbd/commit.c
> ===================================================================
> --- linux-2.6.26-rc2.orig/fs/jbd/commit.c
> +++ linux-2.6.26-rc2/fs/jbd/commit.c
> @@ -703,6 +703,9 @@ wait_for_iobuf:
>  		__brelse(bh);
>  	}
>  
> +	if (err)
> +		journal_abort(journal, err);
> +
>  	J_ASSERT (commit_transaction->t_shadow_list == NULL);
  Shouldn't this rather be further just before
journal_write_commit_record()? We should abort also if writing revoke
records etc. failed, shouldn't we?

>  	jbd_debug(3, "JBD: commit phase 5\n");
> 

								Honza
-- 
Jan Kara <jack@xxxxxxx>
SUSE Labs, CR
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