| From: | Andres Freund <andres(at)anarazel(dot)de> |
|---|---|
| To: | Kyotaro Horiguchi <horikyota(dot)ntt(at)gmail(dot)com> |
| Cc: | bharath(dot)rupireddyforpostgres(at)gmail(dot)com, michael(at)paquier(dot)xyz, alvherre(at)alvh(dot)no-ip(dot)org, nathandbossart(at)gmail(dot)com, thomas(dot)munro(at)gmail(dot)com, pgsql-hackers(at)lists(dot)postgresql(dot)org |
| Subject: | Re: Use pg_pwritev_with_retry() instead of write() in dir_open_for_write() to avoid partial writes? |
| Date: | 2023-02-15 02:00:28 |
| Message-ID: | 20230215020028.z3czhaje3fkd745f@awork3.anarazel.de |
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| Lists: | pgsql-hackers |
Hi
On 2023-02-15 10:28:37 +0900, Kyotaro Horiguchi wrote:
> At Tue, 14 Feb 2023 16:55:25 -0800, Andres Freund <andres(at)anarazel(dot)de> wrote in
> > Hi,
> >
> > On 2023-02-14 18:00:00 +0530, Bharath Rupireddy wrote:
> > > Done, PSA v2 patch.
> >
> > This feels way too complicated to me. How about something more like the
> > attached?
>
> I like this one, but the parameters offset and size are in a different
> order from pwrite(fd, buf, count, offset). I perfer the arrangement
> suggested by Bharath.
Yes, it probably is better. Not sure why I went with that order.
> And isn't it better to use Min(remaining_size, BLCKSZ) instead of a bare if
> statement?
I really can't make myself care about which version is better :)
Greetings,
Andres Freund
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