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Diffstat (limited to 'arch/s390/hypfs/hypfs_dbfs.c')
-rw-r--r--arch/s390/hypfs/hypfs_dbfs.c49
1 files changed, 12 insertions, 37 deletions
diff --git a/arch/s390/hypfs/hypfs_dbfs.c b/arch/s390/hypfs/hypfs_dbfs.c
index 47fe1055c714..752f6df3e697 100644
--- a/arch/s390/hypfs/hypfs_dbfs.c
+++ b/arch/s390/hypfs/hypfs_dbfs.c
@@ -17,33 +17,16 @@ static struct hypfs_dbfs_data *hypfs_dbfs_data_alloc(struct hypfs_dbfs_file *f)
data = kmalloc(sizeof(*data), GFP_KERNEL);
if (!data)
return NULL;
- kref_init(&data->kref);
data->dbfs_file = f;
return data;
}
-static void hypfs_dbfs_data_free(struct kref *kref)
+static void hypfs_dbfs_data_free(struct hypfs_dbfs_data *data)
{
- struct hypfs_dbfs_data *data;
-
- data = container_of(kref, struct hypfs_dbfs_data, kref);
data->dbfs_file->data_free(data->buf_free_ptr);
kfree(data);
}
-static void data_free_delayed(struct work_struct *work)
-{
- struct hypfs_dbfs_data *data;
- struct hypfs_dbfs_file *df;
-
- df = container_of(work, struct hypfs_dbfs_file, data_free_work.work);
- mutex_lock(&df->lock);
- data = df->data;
- df->data = NULL;
- mutex_unlock(&df->lock);
- kref_put(&data->kref, hypfs_dbfs_data_free);
-}
-
static ssize_t dbfs_read(struct file *file, char __user *buf,
size_t size, loff_t *ppos)
{
@@ -56,28 +39,21 @@ static ssize_t dbfs_read(struct file *file, char __user *buf,
df = file_inode(file)->i_private;
mutex_lock(&df->lock);
- if (!df->data) {
- data = hypfs_dbfs_data_alloc(df);
- if (!data) {
- mutex_unlock(&df->lock);
- return -ENOMEM;
- }
- rc = df->data_create(&data->buf, &data->buf_free_ptr,
- &data->size);
- if (rc) {
- mutex_unlock(&df->lock);
- kfree(data);
- return rc;
- }
- df->data = data;
- schedule_delayed_work(&df->data_free_work, HZ);
+ data = hypfs_dbfs_data_alloc(df);
+ if (!data) {
+ mutex_unlock(&df->lock);
+ return -ENOMEM;
+ }
+ rc = df->data_create(&data->buf, &data->buf_free_ptr, &data->size);
+ if (rc) {
+ mutex_unlock(&df->lock);
+ kfree(data);
+ return rc;
}
- data = df->data;
- kref_get(&data->kref);
mutex_unlock(&df->lock);
rc = simple_read_from_buffer(buf, size, ppos, data->buf, data->size);
- kref_put(&data->kref, hypfs_dbfs_data_free);
+ hypfs_dbfs_data_free(data);
return rc;
}
@@ -108,7 +84,6 @@ int hypfs_dbfs_create_file(struct hypfs_dbfs_file *df)
if (IS_ERR(df->dentry))
return PTR_ERR(df->dentry);
mutex_init(&df->lock);
- INIT_DELAYED_WORK(&df->data_free_work, data_free_delayed);
return 0;
}