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SubjectRe: [PATCH v2 3/8] block: Replace all ktype default_attrs with groups
On Tue, Apr 02, 2019 at 09:02:38AM -0700, Bart Van Assche wrote:
> On Mon, 2019-04-01 at 22:51 -0400, Kimberly Brown wrote:
> > The kobj_type default_attrs field is being replaced by the
> > default_groups field. Replace all of the ktype default_attrs fields in
> > the block subsystem with default_groups and use the ATTRIBUTE_GROUPS
> > macro to create the default groups.
> >
> > Remove default_ctx_attrs[] because it doesn't contain any attributes.
> >
> > This patch was tested by verifying that the sysfs files for the
> > attributes in the default groups were created.
> >
> > Signed-off-by: Kimberly Brown <kimbrownkd@gmail.com>
> > ---
> > block/blk-integrity.c | 3 ++-
> > block/blk-mq-sysfs.c | 8 ++------
> > block/blk-sysfs.c | 3 ++-
> > 3 files changed, 6 insertions(+), 8 deletions(-)
> >
> > diff --git a/block/blk-integrity.c b/block/blk-integrity.c
> > index d1ab089e0919..85864c71e858 100644
> > --- a/block/blk-integrity.c
> > +++ b/block/blk-integrity.c
> > @@ -365,6 +365,7 @@ static struct attribute *integrity_attrs[] = {
> > &integrity_device_entry.attr,
> > NULL,
> > };
> > +ATTRIBUTE_GROUPS(integrity);
> >
> > static const struct sysfs_ops integrity_ops = {
> > .show = &integrity_attr_show,
> > @@ -372,7 +373,7 @@ static const struct sysfs_ops integrity_ops = {
> > };
> >
> > static struct kobj_type integrity_ktype = {
> > - .default_attrs = integrity_attrs,
> > + .default_groups = integrity_groups,
> > .sysfs_ops = &integrity_ops,
> > };
> >
> > diff --git a/block/blk-mq-sysfs.c b/block/blk-mq-sysfs.c
> > index 3f9c3f4ac44c..5315e538b3b1 100644
> > --- a/block/blk-mq-sysfs.c
> > +++ b/block/blk-mq-sysfs.c
> > @@ -173,10 +173,6 @@ static ssize_t blk_mq_hw_sysfs_cpus_show(struct blk_mq_hw_ctx *hctx, char *page)
> > return ret;
> > }
> >
> > -static struct attribute *default_ctx_attrs[] = {
> > - NULL,
> > -};
> > -
> > static struct blk_mq_hw_ctx_sysfs_entry blk_mq_hw_sysfs_nr_tags = {
> > .attr = {.name = "nr_tags", .mode = 0444 },
> > .show = blk_mq_hw_sysfs_nr_tags_show,
> > @@ -196,6 +192,7 @@ static struct attribute *default_hw_ctx_attrs[] = {
> > &blk_mq_hw_sysfs_cpus.attr,
> > NULL,
> > };
> > +ATTRIBUTE_GROUPS(default_hw_ctx);
> >
> > static const struct sysfs_ops blk_mq_sysfs_ops = {
> > .show = blk_mq_sysfs_show,
> > @@ -214,13 +211,12 @@ static struct kobj_type blk_mq_ktype = {
> >
> > static struct kobj_type blk_mq_ctx_ktype = {
> > .sysfs_ops = &blk_mq_sysfs_ops,
> > - .default_attrs = default_ctx_attrs,
> > .release = blk_mq_ctx_sysfs_release,
> > };
> >
> > static struct kobj_type blk_mq_hw_ktype = {
> > .sysfs_ops = &blk_mq_hw_sysfs_ops,
> > - .default_attrs = default_hw_ctx_attrs,
> > + .default_groups = default_hw_ctx_groups,
> > .release = blk_mq_hw_sysfs_release,
> > };
> >
> > diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c
> > index 422327089e0f..7a95a1eb27e1 100644
> > --- a/block/blk-sysfs.c
> > +++ b/block/blk-sysfs.c
> > @@ -769,6 +769,7 @@ static struct attribute *default_attrs[] = {
> > #endif
> > NULL,
> > };
> > +ATTRIBUTE_GROUPS(default);
> >
> > #define to_queue(atr) container_of((atr), struct queue_sysfs_entry, attr)
> >
> > @@ -890,7 +891,7 @@ static const struct sysfs_ops queue_sysfs_ops = {
> >
> > struct kobj_type blk_queue_ktype = {
> > .sysfs_ops = &queue_sysfs_ops,
> > - .default_attrs = default_attrs,
> > + .default_groups = default_groups,
> > .release = blk_release_queue,
> > };
>
> I think this should have been four patches instead of one.

4? I could maybe see 3, how would you make 4 patches out of this?

> Anyway:
>
> Reviewed-by: Bart Van Assche <bvanassche@acm.org>

Thanks for the review, I'll queue this up in a few days.

greg k-h

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