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From: Justin Tobler <jltobler@gmail.com>
To: Patrick Steinhardt <ps@pks.im>
Cc: git@vger.kernel.org
Subject: Re: [PATCH 5/6] object-file: generalize packfile writes to use odb_write_stream
Date: Tue, 31 Mar 2026 18:21:11 -0500	[thread overview]
Message-ID: <acxWV5U-yb2F_0lG@denethor> (raw)
In-Reply-To: <acxRwaUk4XNJiDx9@pks.im>

On 26/04/01 12:59AM, Patrick Steinhardt wrote:
> On Tue, Mar 31, 2026 at 09:31:25AM -0500, Justin Tobler wrote:
> > On 26/03/31 09:48AM, Patrick Steinhardt wrote:
> > > On Mon, Mar 30, 2026 at 10:38:34PM -0500, Justin Tobler wrote:
> > > > @@ -1543,6 +1542,40 @@ static void flush_packfile_transaction(struct odb_transaction_files *transaction
> > > >  	odb_reprepare(repo->objects);
> > > >  }
> > > >  
> > > > +struct read_object_fd_data {
> > > > +	int fd;
> > > > +	size_t size;
> > > > +	unsigned char buf[16384];
> > > > +};
> > > 
> > > This interface feels generally useful to me, not just in this subsystem
> > > here. Would it make sense to instead expose it in "odb/transaction.h"
> > > as a new `odb_write_stream_from_fd()` function? No need to expose the
> > > structure itself, I guess.
> > 
> > Hmmm, exposing an `odb_write_stream_from_fd()` function could probably
> > be useful. Would it be better for it to be put in "odb/streaming.h"
> > though? Maybe the its use case would always be related to transactions?
> 
> For now it's certainly always related to writing objects, but you're
> right in that it is not necessarily related to a transaction. After all,
> we also have `odb_write_object_stream()`.
> 
> Putting it into "odb.h" would feel off I think, so maybe
> "odb/streaming.h" is a good alternative.

Ok, I'll put it in "odb/streaming.h" for now. Out of curiousity, is
there any reason `struct odb_write_stream` isn't currently in
"odb/streaming.h" already? I was thinking it may make sense to move that
interface over as well.

Thanks,
-Justin

  reply	other threads:[~2026-03-31 23:21 UTC|newest]

Thread overview: 57+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-03-31  3:38 [PATCH 0/6] odb: add write operation to ODB transaction interface Justin Tobler
2026-03-31  3:38 ` [PATCH 1/6] odb: split `struct odb_transaction` into separate header Justin Tobler
2026-03-31  7:48   ` Patrick Steinhardt
2026-03-31 13:56     ` Justin Tobler
2026-03-31 15:58       ` Junio C Hamano
2026-03-31 16:44         ` Justin Tobler
2026-03-31  3:38 ` [PATCH 2/6] odb/transaction: use pluggable `begin_transaction()` Justin Tobler
2026-03-31  7:48   ` Patrick Steinhardt
2026-03-31  3:38 ` [PATCH 3/6] object-file: remove flags from transaction packfile writes Justin Tobler
2026-03-31  7:48   ` Patrick Steinhardt
2026-03-31 14:10     ` Justin Tobler
2026-03-31  3:38 ` [PATCH 4/6] object-file: avoid fd seekback by checking object size upfront Justin Tobler
2026-03-31  7:48   ` Patrick Steinhardt
2026-03-31 14:14     ` Justin Tobler
2026-03-31  3:38 ` [PATCH 5/6] object-file: generalize packfile writes to use odb_write_stream Justin Tobler
2026-03-31  7:48   ` Patrick Steinhardt
2026-03-31 14:31     ` Justin Tobler
2026-03-31 22:59       ` Patrick Steinhardt
2026-03-31 23:21         ` Justin Tobler [this message]
2026-03-31 23:40           ` Patrick Steinhardt
2026-03-31  3:38 ` [PATCH 6/6] odb/transaction: make `write_object_stream()` pluggable Justin Tobler
2026-03-31  7:48   ` Patrick Steinhardt
2026-03-31 14:40     ` Justin Tobler
2026-04-01  3:03 ` [PATCH v2 0/7] odb: add write operation to ODB transaction interface Justin Tobler
2026-04-01  3:03   ` [PATCH v2 1/7] odb: split `struct odb_transaction` into separate header Justin Tobler
2026-04-01  3:03   ` [PATCH v2 2/7] odb/transaction: use pluggable `begin_transaction()` Justin Tobler
2026-04-01  3:03   ` [PATCH v2 3/7] odb: update `struct odb_write_stream` read() callback Justin Tobler
2026-04-01 11:23     ` Patrick Steinhardt
2026-04-01  3:03   ` [PATCH v2 4/7] object-file: remove flags from transaction packfile writes Justin Tobler
2026-04-01 11:23     ` Patrick Steinhardt
2026-04-01 14:02       ` Justin Tobler
2026-04-01  3:03   ` [PATCH v2 5/7] object-file: avoid fd seekback by checking object size upfront Justin Tobler
2026-04-01  3:03   ` [PATCH v2 6/7] object-file: generalize packfile writes to use odb_write_stream Justin Tobler
2026-04-01  3:03   ` [PATCH v2 7/7] odb/transaction: make `write_object_stream()` pluggable Justin Tobler
2026-04-01 11:24   ` [PATCH v2 0/7] odb: add write operation to ODB transaction interface Patrick Steinhardt
2026-04-02 21:32   ` [PATCH v3 " Justin Tobler
2026-04-02 21:32     ` [PATCH v3 1/7] odb: split `struct odb_transaction` into separate header Justin Tobler
2026-04-02 21:32     ` [PATCH v3 2/7] odb/transaction: use pluggable `begin_transaction()` Justin Tobler
2026-04-02 21:32     ` [PATCH v3 3/7] odb: update `struct odb_write_stream` read() callback Justin Tobler
2026-05-11 17:58       ` Jeff King
2026-05-12 15:19         ` Justin Tobler
2026-04-02 21:32     ` [PATCH v3 4/7] object-file: remove flags from transaction packfile writes Justin Tobler
2026-04-06 20:16       ` Jeff King
2026-04-06 20:19         ` Jeff King
2026-04-02 21:32     ` [PATCH v3 5/7] object-file: avoid fd seekback by checking object size upfront Justin Tobler
2026-04-02 21:32     ` [PATCH v3 6/7] object-file: generalize packfile writes to use odb_write_stream Justin Tobler
2026-04-02 21:32     ` [PATCH v3 7/7] odb/transaction: make `write_object_stream()` pluggable Justin Tobler
2026-04-08  7:25     ` [PATCH v3 0/7] odb: add write operation to ODB transaction interface Patrick Steinhardt
2026-05-14 18:37     ` [PATCH v4 " Justin Tobler
2026-05-14 18:37       ` [PATCH v4 1/7] odb: split `struct odb_transaction` into separate header Justin Tobler
2026-05-14 18:37       ` [PATCH v4 2/7] odb/transaction: use pluggable `begin_transaction()` Justin Tobler
2026-05-14 18:37       ` [PATCH v4 3/7] odb: update `struct odb_write_stream` read() callback Justin Tobler
2026-05-14 18:37       ` [PATCH v4 4/7] object-file: remove flags from transaction packfile writes Justin Tobler
2026-05-14 18:37       ` [PATCH v4 5/7] object-file: avoid fd seekback by checking object size upfront Justin Tobler
2026-05-14 18:37       ` [PATCH v4 6/7] object-file: generalize packfile writes to use odb_write_stream Justin Tobler
2026-05-14 18:37       ` [PATCH v4 7/7] odb/transaction: make `write_object_stream()` pluggable Justin Tobler
2026-05-15  3:56       ` [PATCH v4 0/7] odb: add write operation to ODB transaction interface Jeff King

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