Hi,
On Mon, 2005-01-24 at 20:22, Alex Tomas wrote:
> during truncate ext3 calls journal_forget() for freed blocks, but
> before these blocks go to the transaction and jbd reserves space
> in log for them (->t_outstanding_credits). also, journal_forget()
> removes these blocks from the transaction, but doesn't correct
> log space reservation. for example, removal of 500MB file reserves
> 136 blocks, but only 10 blocks go to the log. a commit is expensive
> and correct reservation allows us to avoid needless commits. here
> is the patch. tested on UP.
> +drop:
> + if (drop_reserve) {
> + /* no need to reserve log space for this block -bzzz */
> + handle->h_buffer_credits++;
> + }
> +
Looks good to me.
--Stephen
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