[PATCH 1/2] block: pass BlockDriver reference to the .bdrv_co_create

Maxim Levitsky posted 2 patches 8 weeks ago
Maintainers: "Richard W.M. Jones" <rjones@redhat.com>, Jason Dillaman <dillaman@redhat.com>, Max Reitz <mreitz@redhat.com>, Kevin Wolf <kwolf@redhat.com>, Jeff Cody <codyprime@gmail.com>, Peter Lieven <pl@kamp.de>, Liu Yuan <namei.unix@gmail.com>, Stefan Hajnoczi <stefanha@redhat.com>, "Denis V. Lunev" <den@openvz.org>, Fam Zheng <fam@euphon.net>, Ronnie Sahlberg <ronniesahlberg@gmail.com>, Stefan Weil <sw@weilnetz.de>, Paolo Bonzini <pbonzini@redhat.com>, Eric Blake <eblake@redhat.com>

[PATCH 1/2] block: pass BlockDriver reference to the .bdrv_co_create

Posted by Maxim Levitsky 8 weeks ago
This will allow to reuse a single generic .bdrv_co_create
implementation for several drivers.
No functional changes.

Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
---
 block.c                   | 3 ++-
 block/crypto.c            | 3 ++-
 block/file-posix.c        | 4 +++-
 block/file-win32.c        | 4 +++-
 block/gluster.c           | 3 ++-
 block/nfs.c               | 4 +++-
 block/parallels.c         | 3 ++-
 block/qcow.c              | 3 ++-
 block/qcow2.c             | 4 +++-
 block/qed.c               | 3 ++-
 block/raw-format.c        | 4 +++-
 block/rbd.c               | 3 ++-
 block/sheepdog.c          | 4 +++-
 block/ssh.c               | 4 +++-
 block/vdi.c               | 4 +++-
 block/vhdx.c              | 3 ++-
 block/vmdk.c              | 4 +++-
 block/vpc.c               | 6 ++++--
 include/block/block_int.h | 3 ++-
 19 files changed, 49 insertions(+), 20 deletions(-)

diff --git a/block.c b/block.c
index cccae5add9..ff23e20443 100644
--- a/block.c
+++ b/block.c
@@ -483,7 +483,8 @@ static void coroutine_fn bdrv_create_co_entry(void *opaque)
     CreateCo *cco = opaque;
     assert(cco->drv);
 
-    ret = cco->drv->bdrv_co_create_opts(cco->filename, cco->opts, &local_err);
+    ret = cco->drv->bdrv_co_create_opts(cco->drv,
+                                        cco->filename, cco->opts, &local_err);
     error_propagate(&cco->err, local_err);
     cco->ret = ret;
 }
diff --git a/block/crypto.c b/block/crypto.c
index 4425ebeb47..d577f89659 100644
--- a/block/crypto.c
+++ b/block/crypto.c
@@ -601,7 +601,8 @@ fail:
     return ret;
 }
 
-static int coroutine_fn block_crypto_co_create_opts_luks(const char *filename,
+static int coroutine_fn block_crypto_co_create_opts_luks(BlockDriver *drv,
+                                                         const char *filename,
                                                          QemuOpts *opts,
                                                          Error **errp)
 {
diff --git a/block/file-posix.c b/block/file-posix.c
index 9bc3838b2a..65bc980bc4 100644
--- a/block/file-posix.c
+++ b/block/file-posix.c
@@ -2405,7 +2405,9 @@ out:
     return result;
 }
 
-static int coroutine_fn raw_co_create_opts(const char *filename, QemuOpts *opts,
+static int coroutine_fn raw_co_create_opts(BlockDriver *drv,
+                                           const char *filename,
+                                           QemuOpts *opts,
                                            Error **errp)
 {
     BlockdevCreateOptions options;
diff --git a/block/file-win32.c b/block/file-win32.c
index 77e8ff7b68..15859839a1 100644
--- a/block/file-win32.c
+++ b/block/file-win32.c
@@ -588,7 +588,9 @@ static int raw_co_create(BlockdevCreateOptions *options, Error **errp)
     return 0;
 }
 
-static int coroutine_fn raw_co_create_opts(const char *filename, QemuOpts *opts,
+static int coroutine_fn raw_co_create_opts(BlockDriver *drv,
+                                           const char *filename,
+                                           QemuOpts *opts,
                                            Error **errp)
 {
     BlockdevCreateOptions options;
diff --git a/block/gluster.c b/block/gluster.c
index 4fa4a77a47..0aa1f2cda4 100644
--- a/block/gluster.c
+++ b/block/gluster.c
@@ -1130,7 +1130,8 @@ out:
     return ret;
 }
 
-static int coroutine_fn qemu_gluster_co_create_opts(const char *filename,
+static int coroutine_fn qemu_gluster_co_create_opts(BlockDriver *drv,
+                                                    const char *filename,
                                                     QemuOpts *opts,
                                                     Error **errp)
 {
diff --git a/block/nfs.c b/block/nfs.c
index 9a6311e270..cc2413d5ab 100644
--- a/block/nfs.c
+++ b/block/nfs.c
@@ -662,7 +662,9 @@ out:
     return ret;
 }
 
-static int coroutine_fn nfs_file_co_create_opts(const char *url, QemuOpts *opts,
+static int coroutine_fn nfs_file_co_create_opts(BlockDriver *drv,
+                                                const char *url,
+                                                QemuOpts *opts,
                                                 Error **errp)
 {
     BlockdevCreateOptions *create_options;
diff --git a/block/parallels.c b/block/parallels.c
index 7a01997659..6d4ed77f16 100644
--- a/block/parallels.c
+++ b/block/parallels.c
@@ -609,7 +609,8 @@ exit:
     goto out;
 }
 
-static int coroutine_fn parallels_co_create_opts(const char *filename,
+static int coroutine_fn parallels_co_create_opts(BlockDriver *drv,
+                                                 const char *filename,
                                                  QemuOpts *opts,
                                                  Error **errp)
 {
diff --git a/block/qcow.c b/block/qcow.c
index fce8989868..8973e4e565 100644
--- a/block/qcow.c
+++ b/block/qcow.c
@@ -934,7 +934,8 @@ exit:
     return ret;
 }
 
-static int coroutine_fn qcow_co_create_opts(const char *filename,
+static int coroutine_fn qcow_co_create_opts(BlockDriver *drv,
+                                            const char *filename,
                                             QemuOpts *opts, Error **errp)
 {
     BlockdevCreateOptions *create_options = NULL;
diff --git a/block/qcow2.c b/block/qcow2.c
index d1da3d91db..5f65fce924 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -3558,7 +3558,9 @@ out:
     return ret;
 }
 
-static int coroutine_fn qcow2_co_create_opts(const char *filename, QemuOpts *opts,
+static int coroutine_fn qcow2_co_create_opts(BlockDriver *drv,
+                                             const char *filename,
+                                             QemuOpts *opts,
                                              Error **errp)
 {
     BlockdevCreateOptions *create_options = NULL;
diff --git a/block/qed.c b/block/qed.c
index d8c4e5fb1e..1af9b3cb1d 100644
--- a/block/qed.c
+++ b/block/qed.c
@@ -720,7 +720,8 @@ out:
     return ret;
 }
 
-static int coroutine_fn bdrv_qed_co_create_opts(const char *filename,
+static int coroutine_fn bdrv_qed_co_create_opts(BlockDriver *drv,
+                                                const char *filename,
                                                 QemuOpts *opts,
                                                 Error **errp)
 {
diff --git a/block/raw-format.c b/block/raw-format.c
index 3a76ec7dd2..93b25e1b6b 100644
--- a/block/raw-format.c
+++ b/block/raw-format.c
@@ -419,7 +419,9 @@ static int raw_has_zero_init_truncate(BlockDriverState *bs)
     return bdrv_has_zero_init_truncate(bs->file->bs);
 }
 
-static int coroutine_fn raw_co_create_opts(const char *filename, QemuOpts *opts,
+static int coroutine_fn raw_co_create_opts(BlockDriver *drv,
+                                           const char *filename,
+                                           QemuOpts *opts,
                                            Error **errp)
 {
     return bdrv_create_file(filename, opts, errp);
diff --git a/block/rbd.c b/block/rbd.c
index 84115d34b4..e637639a07 100644
--- a/block/rbd.c
+++ b/block/rbd.c
@@ -437,7 +437,8 @@ static int qemu_rbd_co_create(BlockdevCreateOptions *options, Error **errp)
     return qemu_rbd_do_create(options, NULL, NULL, errp);
 }
 
-static int coroutine_fn qemu_rbd_co_create_opts(const char *filename,
+static int coroutine_fn qemu_rbd_co_create_opts(BlockDriver *drv,
+                                                const char *filename,
                                                 QemuOpts *opts,
                                                 Error **errp)
 {
diff --git a/block/sheepdog.c b/block/sheepdog.c
index cfa84338a2..a8a7e32a41 100644
--- a/block/sheepdog.c
+++ b/block/sheepdog.c
@@ -2157,7 +2157,9 @@ out:
     return ret;
 }
 
-static int coroutine_fn sd_co_create_opts(const char *filename, QemuOpts *opts,
+static int coroutine_fn sd_co_create_opts(BlockDriver *drv,
+                                          const char *filename,
+                                          QemuOpts *opts,
                                           Error **errp)
 {
     BlockdevCreateOptions *create_options = NULL;
diff --git a/block/ssh.c b/block/ssh.c
index b4375cf7d2..84e92821c0 100644
--- a/block/ssh.c
+++ b/block/ssh.c
@@ -963,7 +963,9 @@ fail:
     return ret;
 }
 
-static int coroutine_fn ssh_co_create_opts(const char *filename, QemuOpts *opts,
+static int coroutine_fn ssh_co_create_opts(BlockDriver *drv,
+                                           const char *filename,
+                                           QemuOpts *opts,
                                            Error **errp)
 {
     BlockdevCreateOptions *create_options;
diff --git a/block/vdi.c b/block/vdi.c
index 0142da7233..e1a11f2aa0 100644
--- a/block/vdi.c
+++ b/block/vdi.c
@@ -896,7 +896,9 @@ static int coroutine_fn vdi_co_create(BlockdevCreateOptions *create_options,
     return vdi_co_do_create(create_options, DEFAULT_CLUSTER_SIZE, errp);
 }
 
-static int coroutine_fn vdi_co_create_opts(const char *filename, QemuOpts *opts,
+static int coroutine_fn vdi_co_create_opts(BlockDriver *drv,
+                                           const char *filename,
+                                           QemuOpts *opts,
                                            Error **errp)
 {
     QDict *qdict = NULL;
diff --git a/block/vhdx.c b/block/vhdx.c
index f02d2611be..33e57cd656 100644
--- a/block/vhdx.c
+++ b/block/vhdx.c
@@ -2046,7 +2046,8 @@ delete_and_exit:
     return ret;
 }
 
-static int coroutine_fn vhdx_co_create_opts(const char *filename,
+static int coroutine_fn vhdx_co_create_opts(BlockDriver *drv,
+                                            const char *filename,
                                             QemuOpts *opts,
                                             Error **errp)
 {
diff --git a/block/vmdk.c b/block/vmdk.c
index 8466051bc9..218d9c9800 100644
--- a/block/vmdk.c
+++ b/block/vmdk.c
@@ -2588,7 +2588,9 @@ exit:
     return blk;
 }
 
-static int coroutine_fn vmdk_co_create_opts(const char *filename, QemuOpts *opts,
+static int coroutine_fn vmdk_co_create_opts(BlockDriver *drv,
+                                            const char *filename,
+                                            QemuOpts *opts,
                                             Error **errp)
 {
     Error *local_err = NULL;
diff --git a/block/vpc.c b/block/vpc.c
index a65550298e..6df75e22dc 100644
--- a/block/vpc.c
+++ b/block/vpc.c
@@ -1089,8 +1089,10 @@ out:
     return ret;
 }
 
-static int coroutine_fn vpc_co_create_opts(const char *filename,
-                                           QemuOpts *opts, Error **errp)
+static int coroutine_fn vpc_co_create_opts(BlockDriver *drv,
+                                           const char *filename,
+                                           QemuOpts *opts,
+                                           Error **errp)
 {
     BlockdevCreateOptions *create_options = NULL;
     QDict *qdict;
diff --git a/include/block/block_int.h b/include/block/block_int.h
index ae9c4da4d0..57c8ea24b2 100644
--- a/include/block/block_int.h
+++ b/include/block/block_int.h
@@ -135,7 +135,8 @@ struct BlockDriver {
     void (*bdrv_close)(BlockDriverState *bs);
     int coroutine_fn (*bdrv_co_create)(BlockdevCreateOptions *opts,
                                        Error **errp);
-    int coroutine_fn (*bdrv_co_create_opts)(const char *filename,
+    int coroutine_fn (*bdrv_co_create_opts)(BlockDriver *drv,
+                                            const char *filename,
                                             QemuOpts *opts,
                                             Error **errp);
     int (*bdrv_make_empty)(BlockDriverState *bs);
-- 
2.17.2


Re: [PATCH 1/2] block: pass BlockDriver reference to the .bdrv_co_create

Posted by Eric Blake 8 weeks ago
On 3/25/20 8:12 PM, Maxim Levitsky wrote:
> This will allow to reuse a single generic .bdrv_co_create

"allow to ${verb}" is not idiomatic, better is "allow ${subject} to 
${verb}" or "allow ${verb}ing".  In this case, I'd go with:

This will allow the reuse of a single...

> implementation for several drivers.
> No functional changes.
> 
> Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
> ---
-- 
Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3226
Virtualization:  qemu.org | libvirt.org


Re: [PATCH 1/2] block: pass BlockDriver reference to the .bdrv_co_create

Posted by Maxim Levitsky 8 weeks ago
On Thu, 2020-03-26 at 08:18 -0500, Eric Blake wrote:
> On 3/25/20 8:12 PM, Maxim Levitsky wrote:
> > This will allow to reuse a single generic .bdrv_co_create
> 
> "allow to ${verb}" is not idiomatic, better is "allow ${subject} to 
> ${verb}" or "allow ${verb}ing".  In this case, I'd go with:
> 
> This will allow the reuse of a single...
I agree! This commit will probably go as is but next time I'll keep it in mind!

Best regards,
	Maxim Levitsky

> 
> > implementation for several drivers.
> > No functional changes.
> > 
> > Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
> > ---



Re: [PATCH 1/2] block: pass BlockDriver reference to the .bdrv_co_create

Posted by Eric Blake 8 weeks ago
On 3/26/20 8:22 AM, Maxim Levitsky wrote:
> On Thu, 2020-03-26 at 08:18 -0500, Eric Blake wrote:
>> On 3/25/20 8:12 PM, Maxim Levitsky wrote:
>>> This will allow to reuse a single generic .bdrv_co_create
>>
>> "allow to ${verb}" is not idiomatic, better is "allow ${subject} to
>> ${verb}" or "allow ${verb}ing".  In this case, I'd go with:
>>
>> This will allow the reuse of a single...
> I agree! This commit will probably go as is but next time I'll keep it in mind!

Max hasn't sent the pull request yet; there's still time for him to 
amend his staging queue if he wants.  But yeah, it's not a huge deal if 
the patch goes in without spelling/grammar polish.

-- 
Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3226
Virtualization:  qemu.org | libvirt.org