* [PATCH] f2fs: introduce a new per-sb directory in sysfs
@ 2020-11-27 9:01 Chao Yu
2020-12-03 8:56 ` Chao Yu
0 siblings, 1 reply; 5+ messages in thread
From: Chao Yu @ 2020-11-27 9:01 UTC (permalink / raw)
To: jaegeuk; +Cc: linux-f2fs-devel, linux-kernel, chao, Chao Yu
Add a new directory 'stat' in path of /sys/fs/f2fs/<devname>/, later
we can add new readonly stat sysfs file into this directory, it will
make <devname> directory less mess.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
---
fs/f2fs/f2fs.h | 5 +++-
fs/f2fs/sysfs.c | 69 +++++++++++++++++++++++++++++++++++++++++++++----
2 files changed, 68 insertions(+), 6 deletions(-)
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 0d38f2135016..a20059dece46 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -1510,9 +1510,12 @@ struct f2fs_sb_info {
unsigned int node_io_flag;
/* For sysfs suppport */
- struct kobject s_kobj;
+ struct kobject s_kobj; /* /sys/fs/f2fs/<devname> */
struct completion s_kobj_unregister;
+ struct kobject s_stat_kobj; /* /sys/fs/f2fs/<devname>/stat */
+ struct completion s_stat_kobj_unregister;
+
/* For shrinker support */
struct list_head s_list;
int s_ndevs; /* number of devices */
diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c
index ec77ccfea923..8c63a6e61dfd 100644
--- a/fs/f2fs/sysfs.c
+++ b/fs/f2fs/sysfs.c
@@ -708,6 +708,11 @@ static struct attribute *f2fs_feat_attrs[] = {
};
ATTRIBUTE_GROUPS(f2fs_feat);
+static struct attribute *f2fs_stat_attrs[] = {
+ NULL,
+};
+ATTRIBUTE_GROUPS(f2fs_stat);
+
static const struct sysfs_ops f2fs_attr_ops = {
.show = f2fs_attr_show,
.store = f2fs_attr_store,
@@ -736,6 +741,44 @@ static struct kobject f2fs_feat = {
.kset = &f2fs_kset,
};
+static ssize_t f2fs_stat_attr_show(struct kobject *kobj,
+ struct attribute *attr, char *buf)
+{
+ struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
+ s_stat_kobj);
+ struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
+
+ return a->show ? a->show(a, sbi, buf) : 0;
+}
+
+static ssize_t f2fs_stat_attr_store(struct kobject *kobj, struct attribute *attr,
+ const char *buf, size_t len)
+{
+ struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
+ s_stat_kobj);
+ struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
+
+ return a->store ? a->store(a, sbi, buf, len) : 0;
+}
+
+static void f2fs_stat_kobj_release(struct kobject *kobj)
+{
+ struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
+ s_stat_kobj);
+ complete(&sbi->s_stat_kobj_unregister);
+}
+
+static const struct sysfs_ops f2fs_stat_attr_ops = {
+ .show = f2fs_stat_attr_show,
+ .store = f2fs_stat_attr_store,
+};
+
+static struct kobj_type f2fs_stat_ktype = {
+ .default_groups = f2fs_stat_groups,
+ .sysfs_ops = &f2fs_stat_attr_ops,
+ .release = f2fs_stat_kobj_release,
+};
+
static int __maybe_unused segment_info_seq_show(struct seq_file *seq,
void *offset)
{
@@ -942,11 +985,15 @@ int f2fs_register_sysfs(struct f2fs_sb_info *sbi)
init_completion(&sbi->s_kobj_unregister);
err = kobject_init_and_add(&sbi->s_kobj, &f2fs_sb_ktype, NULL,
"%s", sb->s_id);
- if (err) {
- kobject_put(&sbi->s_kobj);
- wait_for_completion(&sbi->s_kobj_unregister);
- return err;
- }
+ if (err)
+ goto put_sb_kobj;
+
+ sbi->s_stat_kobj.kset = &f2fs_kset;
+ init_completion(&sbi->s_stat_kobj_unregister);
+ err = kobject_init_and_add(&sbi->s_stat_kobj, &f2fs_stat_ktype,
+ &sbi->s_kobj, "stat");
+ if (err)
+ goto put_stat_kobj;
if (f2fs_proc_root)
sbi->s_proc = proc_mkdir(sb->s_id, f2fs_proc_root);
@@ -962,6 +1009,13 @@ int f2fs_register_sysfs(struct f2fs_sb_info *sbi)
victim_bits_seq_show, sb);
}
return 0;
+put_stat_kobj:
+ kobject_put(&sbi->s_stat_kobj);
+ wait_for_completion(&sbi->s_stat_kobj_unregister);
+put_sb_kobj:
+ kobject_put(&sbi->s_kobj);
+ wait_for_completion(&sbi->s_kobj_unregister);
+ return err;
}
void f2fs_unregister_sysfs(struct f2fs_sb_info *sbi)
@@ -973,6 +1027,11 @@ void f2fs_unregister_sysfs(struct f2fs_sb_info *sbi)
remove_proc_entry("victim_bits", sbi->s_proc);
remove_proc_entry(sbi->sb->s_id, f2fs_proc_root);
}
+
+ kobject_del(&sbi->s_stat_kobj);
+ kobject_put(&sbi->s_stat_kobj);
+ wait_for_completion(&sbi->s_stat_kobj_unregister);
+
kobject_del(&sbi->s_kobj);
kobject_put(&sbi->s_kobj);
wait_for_completion(&sbi->s_kobj_unregister);
--
2.26.2
^ permalink raw reply related [flat|nested] 5+ messages in thread* Re: [PATCH] f2fs: introduce a new per-sb directory in sysfs
2020-11-27 9:01 [PATCH] f2fs: introduce a new per-sb directory in sysfs Chao Yu
@ 2020-12-03 8:56 ` Chao Yu
2020-12-04 18:23 ` Jaegeuk Kim
0 siblings, 1 reply; 5+ messages in thread
From: Chao Yu @ 2020-12-03 8:56 UTC (permalink / raw)
To: jaegeuk; +Cc: linux-f2fs-devel, linux-kernel, chao
Jaegeuk,
Can you comment on this patch?
On 2020/11/27 17:01, Chao Yu wrote:
> Add a new directory 'stat' in path of /sys/fs/f2fs/<devname>/, later
> we can add new readonly stat sysfs file into this directory, it will
> make <devname> directory less mess.
>
> Signed-off-by: Chao Yu <yuchao0@huawei.com>
> ---
> fs/f2fs/f2fs.h | 5 +++-
> fs/f2fs/sysfs.c | 69 +++++++++++++++++++++++++++++++++++++++++++++----
> 2 files changed, 68 insertions(+), 6 deletions(-)
>
> diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
> index 0d38f2135016..a20059dece46 100644
> --- a/fs/f2fs/f2fs.h
> +++ b/fs/f2fs/f2fs.h
> @@ -1510,9 +1510,12 @@ struct f2fs_sb_info {
> unsigned int node_io_flag;
>
> /* For sysfs suppport */
> - struct kobject s_kobj;
> + struct kobject s_kobj; /* /sys/fs/f2fs/<devname> */
> struct completion s_kobj_unregister;
>
> + struct kobject s_stat_kobj; /* /sys/fs/f2fs/<devname>/stat */
> + struct completion s_stat_kobj_unregister;
> +
> /* For shrinker support */
> struct list_head s_list;
> int s_ndevs; /* number of devices */
> diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c
> index ec77ccfea923..8c63a6e61dfd 100644
> --- a/fs/f2fs/sysfs.c
> +++ b/fs/f2fs/sysfs.c
> @@ -708,6 +708,11 @@ static struct attribute *f2fs_feat_attrs[] = {
> };
> ATTRIBUTE_GROUPS(f2fs_feat);
>
> +static struct attribute *f2fs_stat_attrs[] = {
> + NULL,
> +};
> +ATTRIBUTE_GROUPS(f2fs_stat);
> +
> static const struct sysfs_ops f2fs_attr_ops = {
> .show = f2fs_attr_show,
> .store = f2fs_attr_store,
> @@ -736,6 +741,44 @@ static struct kobject f2fs_feat = {
> .kset = &f2fs_kset,
> };
>
> +static ssize_t f2fs_stat_attr_show(struct kobject *kobj,
> + struct attribute *attr, char *buf)
> +{
> + struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
> + s_stat_kobj);
> + struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
> +
> + return a->show ? a->show(a, sbi, buf) : 0;
> +}
> +
> +static ssize_t f2fs_stat_attr_store(struct kobject *kobj, struct attribute *attr,
> + const char *buf, size_t len)
> +{
> + struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
> + s_stat_kobj);
> + struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
> +
> + return a->store ? a->store(a, sbi, buf, len) : 0;
> +}
> +
> +static void f2fs_stat_kobj_release(struct kobject *kobj)
> +{
> + struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
> + s_stat_kobj);
> + complete(&sbi->s_stat_kobj_unregister);
> +}
> +
> +static const struct sysfs_ops f2fs_stat_attr_ops = {
> + .show = f2fs_stat_attr_show,
> + .store = f2fs_stat_attr_store,
> +};
> +
> +static struct kobj_type f2fs_stat_ktype = {
> + .default_groups = f2fs_stat_groups,
> + .sysfs_ops = &f2fs_stat_attr_ops,
> + .release = f2fs_stat_kobj_release,
> +};
> +
> static int __maybe_unused segment_info_seq_show(struct seq_file *seq,
> void *offset)
> {
> @@ -942,11 +985,15 @@ int f2fs_register_sysfs(struct f2fs_sb_info *sbi)
> init_completion(&sbi->s_kobj_unregister);
> err = kobject_init_and_add(&sbi->s_kobj, &f2fs_sb_ktype, NULL,
> "%s", sb->s_id);
> - if (err) {
> - kobject_put(&sbi->s_kobj);
> - wait_for_completion(&sbi->s_kobj_unregister);
> - return err;
> - }
> + if (err)
> + goto put_sb_kobj;
> +
> + sbi->s_stat_kobj.kset = &f2fs_kset;
> + init_completion(&sbi->s_stat_kobj_unregister);
> + err = kobject_init_and_add(&sbi->s_stat_kobj, &f2fs_stat_ktype,
> + &sbi->s_kobj, "stat");
> + if (err)
> + goto put_stat_kobj;
>
> if (f2fs_proc_root)
> sbi->s_proc = proc_mkdir(sb->s_id, f2fs_proc_root);
> @@ -962,6 +1009,13 @@ int f2fs_register_sysfs(struct f2fs_sb_info *sbi)
> victim_bits_seq_show, sb);
> }
> return 0;
> +put_stat_kobj:
> + kobject_put(&sbi->s_stat_kobj);
> + wait_for_completion(&sbi->s_stat_kobj_unregister);
> +put_sb_kobj:
> + kobject_put(&sbi->s_kobj);
> + wait_for_completion(&sbi->s_kobj_unregister);
> + return err;
> }
>
> void f2fs_unregister_sysfs(struct f2fs_sb_info *sbi)
> @@ -973,6 +1027,11 @@ void f2fs_unregister_sysfs(struct f2fs_sb_info *sbi)
> remove_proc_entry("victim_bits", sbi->s_proc);
> remove_proc_entry(sbi->sb->s_id, f2fs_proc_root);
> }
> +
> + kobject_del(&sbi->s_stat_kobj);
> + kobject_put(&sbi->s_stat_kobj);
> + wait_for_completion(&sbi->s_stat_kobj_unregister);
> +
> kobject_del(&sbi->s_kobj);
> kobject_put(&sbi->s_kobj);
> wait_for_completion(&sbi->s_kobj_unregister);
>
^ permalink raw reply [flat|nested] 5+ messages in thread* Re: [PATCH] f2fs: introduce a new per-sb directory in sysfs
2020-12-03 8:56 ` Chao Yu
@ 2020-12-04 18:23 ` Jaegeuk Kim
2020-12-05 1:29 ` Chao Yu
0 siblings, 1 reply; 5+ messages in thread
From: Jaegeuk Kim @ 2020-12-04 18:23 UTC (permalink / raw)
To: Chao Yu; +Cc: linux-f2fs-devel, linux-kernel, chao
On 12/03, Chao Yu wrote:
> Jaegeuk,
>
> Can you comment on this patch?
Waiting for use-case? :)
>
> On 2020/11/27 17:01, Chao Yu wrote:
> > Add a new directory 'stat' in path of /sys/fs/f2fs/<devname>/, later
> > we can add new readonly stat sysfs file into this directory, it will
> > make <devname> directory less mess.
> >
> > Signed-off-by: Chao Yu <yuchao0@huawei.com>
> > ---
> > fs/f2fs/f2fs.h | 5 +++-
> > fs/f2fs/sysfs.c | 69 +++++++++++++++++++++++++++++++++++++++++++++----
> > 2 files changed, 68 insertions(+), 6 deletions(-)
> >
> > diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
> > index 0d38f2135016..a20059dece46 100644
> > --- a/fs/f2fs/f2fs.h
> > +++ b/fs/f2fs/f2fs.h
> > @@ -1510,9 +1510,12 @@ struct f2fs_sb_info {
> > unsigned int node_io_flag;
> > /* For sysfs suppport */
> > - struct kobject s_kobj;
> > + struct kobject s_kobj; /* /sys/fs/f2fs/<devname> */
> > struct completion s_kobj_unregister;
> > + struct kobject s_stat_kobj; /* /sys/fs/f2fs/<devname>/stat */
> > + struct completion s_stat_kobj_unregister;
> > +
> > /* For shrinker support */
> > struct list_head s_list;
> > int s_ndevs; /* number of devices */
> > diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c
> > index ec77ccfea923..8c63a6e61dfd 100644
> > --- a/fs/f2fs/sysfs.c
> > +++ b/fs/f2fs/sysfs.c
> > @@ -708,6 +708,11 @@ static struct attribute *f2fs_feat_attrs[] = {
> > };
> > ATTRIBUTE_GROUPS(f2fs_feat);
> > +static struct attribute *f2fs_stat_attrs[] = {
> > + NULL,
> > +};
> > +ATTRIBUTE_GROUPS(f2fs_stat);
> > +
> > static const struct sysfs_ops f2fs_attr_ops = {
> > .show = f2fs_attr_show,
> > .store = f2fs_attr_store,
> > @@ -736,6 +741,44 @@ static struct kobject f2fs_feat = {
> > .kset = &f2fs_kset,
> > };
> > +static ssize_t f2fs_stat_attr_show(struct kobject *kobj,
> > + struct attribute *attr, char *buf)
> > +{
> > + struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
> > + s_stat_kobj);
> > + struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
> > +
> > + return a->show ? a->show(a, sbi, buf) : 0;
> > +}
> > +
> > +static ssize_t f2fs_stat_attr_store(struct kobject *kobj, struct attribute *attr,
> > + const char *buf, size_t len)
> > +{
> > + struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
> > + s_stat_kobj);
> > + struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
> > +
> > + return a->store ? a->store(a, sbi, buf, len) : 0;
> > +}
> > +
> > +static void f2fs_stat_kobj_release(struct kobject *kobj)
> > +{
> > + struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
> > + s_stat_kobj);
> > + complete(&sbi->s_stat_kobj_unregister);
> > +}
> > +
> > +static const struct sysfs_ops f2fs_stat_attr_ops = {
> > + .show = f2fs_stat_attr_show,
> > + .store = f2fs_stat_attr_store,
> > +};
> > +
> > +static struct kobj_type f2fs_stat_ktype = {
> > + .default_groups = f2fs_stat_groups,
> > + .sysfs_ops = &f2fs_stat_attr_ops,
> > + .release = f2fs_stat_kobj_release,
> > +};
> > +
> > static int __maybe_unused segment_info_seq_show(struct seq_file *seq,
> > void *offset)
> > {
> > @@ -942,11 +985,15 @@ int f2fs_register_sysfs(struct f2fs_sb_info *sbi)
> > init_completion(&sbi->s_kobj_unregister);
> > err = kobject_init_and_add(&sbi->s_kobj, &f2fs_sb_ktype, NULL,
> > "%s", sb->s_id);
> > - if (err) {
> > - kobject_put(&sbi->s_kobj);
> > - wait_for_completion(&sbi->s_kobj_unregister);
> > - return err;
> > - }
> > + if (err)
> > + goto put_sb_kobj;
> > +
> > + sbi->s_stat_kobj.kset = &f2fs_kset;
> > + init_completion(&sbi->s_stat_kobj_unregister);
> > + err = kobject_init_and_add(&sbi->s_stat_kobj, &f2fs_stat_ktype,
> > + &sbi->s_kobj, "stat");
> > + if (err)
> > + goto put_stat_kobj;
> > if (f2fs_proc_root)
> > sbi->s_proc = proc_mkdir(sb->s_id, f2fs_proc_root);
> > @@ -962,6 +1009,13 @@ int f2fs_register_sysfs(struct f2fs_sb_info *sbi)
> > victim_bits_seq_show, sb);
> > }
> > return 0;
> > +put_stat_kobj:
> > + kobject_put(&sbi->s_stat_kobj);
> > + wait_for_completion(&sbi->s_stat_kobj_unregister);
> > +put_sb_kobj:
> > + kobject_put(&sbi->s_kobj);
> > + wait_for_completion(&sbi->s_kobj_unregister);
> > + return err;
> > }
> > void f2fs_unregister_sysfs(struct f2fs_sb_info *sbi)
> > @@ -973,6 +1027,11 @@ void f2fs_unregister_sysfs(struct f2fs_sb_info *sbi)
> > remove_proc_entry("victim_bits", sbi->s_proc);
> > remove_proc_entry(sbi->sb->s_id, f2fs_proc_root);
> > }
> > +
> > + kobject_del(&sbi->s_stat_kobj);
> > + kobject_put(&sbi->s_stat_kobj);
> > + wait_for_completion(&sbi->s_stat_kobj_unregister);
> > +
> > kobject_del(&sbi->s_kobj);
> > kobject_put(&sbi->s_kobj);
> > wait_for_completion(&sbi->s_kobj_unregister);
> >
^ permalink raw reply [flat|nested] 5+ messages in thread* Re: [PATCH] f2fs: introduce a new per-sb directory in sysfs
2020-12-04 18:23 ` Jaegeuk Kim
@ 2020-12-05 1:29 ` Chao Yu
2020-12-05 20:42 ` Jaegeuk Kim
0 siblings, 1 reply; 5+ messages in thread
From: Chao Yu @ 2020-12-05 1:29 UTC (permalink / raw)
To: Jaegeuk Kim, Chao Yu; +Cc: linux-f2fs-devel, linux-kernel
On 2020/12/5 2:23, Jaegeuk Kim wrote:
> On 12/03, Chao Yu wrote:
>> Jaegeuk,
>>
>> Can you comment on this patch?
>
> Waiting for use-case? :)
How do you think of duplicating below stats into /sys/fs/f2fs/<devname>/stat/
F2FS_GENERAL_RO_ATTR(dirty_segments);
F2FS_GENERAL_RO_ATTR(free_segments);
F2FS_GENERAL_RO_ATTR(lifetime_write_kbytes);
F2FS_GENERAL_RO_ATTR(features);
F2FS_GENERAL_RO_ATTR(current_reserved_blocks);
F2FS_GENERAL_RO_ATTR(unusable);
F2FS_GENERAL_RO_ATTR(encoding);
F2FS_GENERAL_RO_ATTR(mounted_time_sec);
F2FS_GENERAL_RO_ATTR(main_blkaddr);
#ifdef CONFIG_F2FS_STAT_FS
F2FS_STAT_ATTR(STAT_INFO, f2fs_stat_info, cp_foreground_calls, cp_count);
F2FS_STAT_ATTR(STAT_INFO, f2fs_stat_info, cp_background_calls, bg_cp_count);
F2FS_STAT_ATTR(STAT_INFO, f2fs_stat_info, gc_foreground_calls, call_count);
F2FS_STAT_ATTR(STAT_INFO, f2fs_stat_info, gc_background_calls, bg_gc);
F2FS_GENERAL_RO_ATTR(moved_blocks_background);
F2FS_GENERAL_RO_ATTR(moved_blocks_foreground);
F2FS_GENERAL_RO_ATTR(avg_vblocks);
#endif
Thanks,
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH] f2fs: introduce a new per-sb directory in sysfs
2020-12-05 1:29 ` Chao Yu
@ 2020-12-05 20:42 ` Jaegeuk Kim
0 siblings, 0 replies; 5+ messages in thread
From: Jaegeuk Kim @ 2020-12-05 20:42 UTC (permalink / raw)
To: Chao Yu; +Cc: Chao Yu, linux-f2fs-devel, linux-kernel
On 12/05, Chao Yu wrote:
> On 2020/12/5 2:23, Jaegeuk Kim wrote:
> > On 12/03, Chao Yu wrote:
> > > Jaegeuk,
> > >
> > > Can you comment on this patch?
> >
> > Waiting for use-case? :)
>
> How do you think of duplicating below stats into /sys/fs/f2fs/<devname>/stat/
We can't move them to /stat, since it requires lots of mess. Let's think
about new ones only.
>
> F2FS_GENERAL_RO_ATTR(dirty_segments);
> F2FS_GENERAL_RO_ATTR(free_segments);
> F2FS_GENERAL_RO_ATTR(lifetime_write_kbytes);
> F2FS_GENERAL_RO_ATTR(features);
> F2FS_GENERAL_RO_ATTR(current_reserved_blocks);
> F2FS_GENERAL_RO_ATTR(unusable);
> F2FS_GENERAL_RO_ATTR(encoding);
> F2FS_GENERAL_RO_ATTR(mounted_time_sec);
> F2FS_GENERAL_RO_ATTR(main_blkaddr);
> #ifdef CONFIG_F2FS_STAT_FS
> F2FS_STAT_ATTR(STAT_INFO, f2fs_stat_info, cp_foreground_calls, cp_count);
> F2FS_STAT_ATTR(STAT_INFO, f2fs_stat_info, cp_background_calls, bg_cp_count);
> F2FS_STAT_ATTR(STAT_INFO, f2fs_stat_info, gc_foreground_calls, call_count);
> F2FS_STAT_ATTR(STAT_INFO, f2fs_stat_info, gc_background_calls, bg_gc);
> F2FS_GENERAL_RO_ATTR(moved_blocks_background);
> F2FS_GENERAL_RO_ATTR(moved_blocks_foreground);
> F2FS_GENERAL_RO_ATTR(avg_vblocks);
> #endif
>
> Thanks,
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2020-12-05 20:43 UTC | newest]
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2020-11-27 9:01 [PATCH] f2fs: introduce a new per-sb directory in sysfs Chao Yu
2020-12-03 8:56 ` Chao Yu
2020-12-04 18:23 ` Jaegeuk Kim
2020-12-05 1:29 ` Chao Yu
2020-12-05 20:42 ` Jaegeuk Kim
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for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).