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| author | Damien Le Moal <damien.lemoal@opensource.wdc.com> | 2022-04-12 16:25:34 +0900 |
|---|---|---|
| committer | Damien Le Moal <damien.lemoal@opensource.wdc.com> | 2022-04-21 08:37:51 +0900 |
| commit | 9277a6d4fbd4aaa668b19b819015f87f0da53a38 (patch) | |
| tree | 8cc9063a2d760878e18b7077b1f86f3a08933dcb /fs/zonefs/zonefs.h | |
| parent | 7d6dfbe03bd3bef51ead25d129dabebd8bae1ec4 (diff) | |
| download | linux-9277a6d4fbd4aaa668b19b819015f87f0da53a38.tar.gz | |
zonefs: Export open zone resource information through sysfs
To allow applications to easily check the current usage status of the open zone resources of the mounted device, export through sysfs the counter of write open sequential files s_wro_seq_files field of struct zonefs_sb_info. The attribute is named nr_wro_seq_files and is read only. The maximum number of write open sequential files (zones) indicated by the s_max_wro_seq_files field of struct zonefs_sb_info is also exported as the read only attribute max_wro_seq_files. Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com> Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Reviewed-by: Hans Holmberg <hans.holmberg@wdc.com>
Diffstat (limited to 'fs/zonefs/zonefs.h')
| -rw-r--r-- | fs/zonefs/zonefs.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/fs/zonefs/zonefs.h b/fs/zonefs/zonefs.h index 67fd00ab173f..77d2d153c59d 100644 --- a/fs/zonefs/zonefs.h +++ b/fs/zonefs/zonefs.h @@ -12,6 +12,7 @@ #include <linux/uuid.h> #include <linux/mutex.h> #include <linux/rwsem.h> +#include <linux/kobject.h> /* * Maximum length of file names: this only needs to be large enough to fit @@ -184,6 +185,10 @@ struct zonefs_sb_info { unsigned int s_max_wro_seq_files; atomic_t s_wro_seq_files; + + bool s_sysfs_registered; + struct kobject s_kobj; + struct completion s_kobj_unregister; }; static inline struct zonefs_sb_info *ZONEFS_SB(struct super_block *sb) @@ -198,4 +203,9 @@ static inline struct zonefs_sb_info *ZONEFS_SB(struct super_block *sb) #define zonefs_warn(sb, format, args...) \ pr_warn("zonefs (%s) WARNING: " format, sb->s_id, ## args) +int zonefs_sysfs_register(struct super_block *sb); +void zonefs_sysfs_unregister(struct super_block *sb); +int zonefs_sysfs_init(void); +void zonefs_sysfs_exit(void); + #endif |