From: Goldwyn Rodrigues <rgoldwyn@xxxxxxxx>
This would create sysfs entries under /sys/fs/<fstype>/<s_id>.
fill_super() must initialize attrs. This may not be the best
way to do it. Suggestions?
Signed-off-by: Goldwyn Rodrigues <rgoldwyn@xxxxxxxx>
---
fs/super.c | 8 ++++----
include/linux/fs.h | 1 +
2 files changed, 5 insertions(+), 4 deletions(-)
diff --git a/fs/super.c b/fs/super.c
index 5f5e25d..f6cef10 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -179,12 +179,12 @@ static const struct sysfs_ops sb_sysfs_ops = {
static int register_kobj(struct super_block *sb)
{
- struct kobj_type *ktype;
- ktype = kzalloc(sizeof(struct kobj_type), GFP_USER);
- if (IS_ERR(ktype))
- return PTR_ERR(ktype);
+ struct kobj_type *ktype = kzalloc(sizeof(struct kobj_type), GFP_USER);
+ if (!ktype)
+ return -ENOMEM;
ktype->sysfs_ops = &sb_sysfs_ops;
ktype->release = release_super;
+ ktype->default_attrs = sb->s_attr;
sb->s_kobj.kset = sb->s_type->kset;
return kobject_init_and_add(&sb->s_kobj, ktype, NULL,
"%s", sb->s_id);
diff --git a/include/linux/fs.h b/include/linux/fs.h
index e6b9d89..59b84a8 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1441,6 +1441,7 @@ struct super_block {
spinlock_t s_inode_list_lock ____cacheline_aligned_in_smp;
struct list_head s_inodes; /* all inodes */
struct kobject s_kobj;
+ struct attribute **s_attr;
};
extern struct timespec current_fs_time(struct super_block *sb);
--
2.6.6
--
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