[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [PATCH v2 3/4] qemu-io: add -r option to register I/O buffer
From: |
Stefan Hajnoczi |
Subject: |
Re: [PATCH v2 3/4] qemu-io: add -r option to register I/O buffer |
Date: |
Wed, 1 Feb 2023 09:49:14 -0500 |
On Tue, Jan 31, 2023 at 03:23:24PM -0600, Eric Blake wrote:
> On Mon, Jan 30, 2023 at 04:54:14PM -0500, Stefan Hajnoczi wrote:
> > The blk_register_buf() API is an optimization hint that allows some
> > block drivers to avoid I/O buffer housekeeping or bounce buffers.
> >
> > Add an -r option to register the I/O buffer so that qemu-io can be used
> > to test the blk_register_buf() API. The next commit will add a test that
> > uses the new option.
> >
> > Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
> > ---
> > qemu-io-cmds.c | 167 +++++++++++++++++++++++++++++++++----------------
> > 1 file changed, 114 insertions(+), 53 deletions(-)
>
> Reviewed-by: Eric Blake <eblake@redhat.com>
>
> > @@ -1277,7 +1322,7 @@ static int writev_f(BlockBackend *blk, int argc, char
> > **argv)
> > int pattern = 0xcd;
> > QEMUIOVector qiov;
> >
> > - while ((c = getopt(argc, argv, "CfqP:")) != -1) {
> > + while ((c = getopt(argc, argv, "CfqrP:")) != -1) {
>
> This one is still odd - it is neither case-sensitive nor
> case-insensitive in order, because of P: coming after qr.
>
> > @@ -1476,7 +1529,7 @@ static int aio_read_f(BlockBackend *blk, int argc,
> > char **argv)
> > struct aio_ctx *ctx = g_new0(struct aio_ctx, 1);
> >
> > ctx->blk = blk;
> > - while ((c = getopt(argc, argv, "CP:iqv")) != -1) {
> > + while ((c = getopt(argc, argv, "CP:iqrv")) != -1) {
>
> This one could at least argue that all capitals are before any
> lower-case, although case-insensitive would put i before P:.
>
> > @@ -1582,22 +1641,24 @@ static int aio_write_f(BlockBackend *blk, int argc,
> > char **argv)
> > int nr_iov, c;
> > int pattern = 0xcd;
> > struct aio_ctx *ctx = g_new0(struct aio_ctx, 1);
> > - BdrvRequestFlags flags = 0;
> >
> > ctx->blk = blk;
> > - while ((c = getopt(argc, argv, "CfiqP:uz")) != -1) {
> > + while ((c = getopt(argc, argv, "CfiqrP:uz")) != -1) {
>
> Another odd spot where P: would fit better before qr.
>
> Those are still minor, so I don't care if you further touch them
> up. My R-b applies either way.
Ah, I only paid attention to the user-visible help strings. I'll fix up
the getopt strings.
Stefan
signature.asc
Description: PGP signature
[Prev in Thread] |
Current Thread |
[Next in Thread] |
- Re: [PATCH v2 3/4] qemu-io: add -r option to register I/O buffer,
Stefan Hajnoczi <=