[PATCH] elevator_t lifetime rules and sysfs fixes
diff --git a/block/deadline-iosched.c b/block/deadline-iosched.c
index 27e494b..a3e3ff1 100644
--- a/block/deadline-iosched.c
+++ b/block/deadline-iosched.c
@@ -694,11 +694,6 @@
/*
* sysfs parts below
*/
-struct deadline_fs_entry {
- struct attribute attr;
- ssize_t (*show)(struct deadline_data *, char *);
- ssize_t (*store)(struct deadline_data *, const char *, size_t);
-};
static ssize_t
deadline_var_show(int var, char *page)
@@ -716,9 +711,10 @@
}
#define SHOW_FUNCTION(__FUNC, __VAR, __CONV) \
-static ssize_t __FUNC(struct deadline_data *dd, char *page) \
+static ssize_t __FUNC(elevator_t *e, char *page) \
{ \
- int __data = __VAR; \
+ struct deadline_data *dd = e->elevator_data; \
+ int __data = __VAR; \
if (__CONV) \
__data = jiffies_to_msecs(__data); \
return deadline_var_show(__data, (page)); \
@@ -731,8 +727,9 @@
#undef SHOW_FUNCTION
#define STORE_FUNCTION(__FUNC, __PTR, MIN, MAX, __CONV) \
-static ssize_t __FUNC(struct deadline_data *dd, const char *page, size_t count) \
+static ssize_t __FUNC(elevator_t *e, const char *page, size_t count) \
{ \
+ struct deadline_data *dd = e->elevator_data; \
int __data; \
int ret = deadline_var_store(&__data, (page), count); \
if (__data < (MIN)) \
@@ -752,33 +749,33 @@
STORE_FUNCTION(deadline_fifobatch_store, &dd->fifo_batch, 0, INT_MAX, 0);
#undef STORE_FUNCTION
-static struct deadline_fs_entry deadline_readexpire_entry = {
+static struct elv_fs_entry deadline_readexpire_entry = {
.attr = {.name = "read_expire", .mode = S_IRUGO | S_IWUSR },
.show = deadline_readexpire_show,
.store = deadline_readexpire_store,
};
-static struct deadline_fs_entry deadline_writeexpire_entry = {
+static struct elv_fs_entry deadline_writeexpire_entry = {
.attr = {.name = "write_expire", .mode = S_IRUGO | S_IWUSR },
.show = deadline_writeexpire_show,
.store = deadline_writeexpire_store,
};
-static struct deadline_fs_entry deadline_writesstarved_entry = {
+static struct elv_fs_entry deadline_writesstarved_entry = {
.attr = {.name = "writes_starved", .mode = S_IRUGO | S_IWUSR },
.show = deadline_writesstarved_show,
.store = deadline_writesstarved_store,
};
-static struct deadline_fs_entry deadline_frontmerges_entry = {
+static struct elv_fs_entry deadline_frontmerges_entry = {
.attr = {.name = "front_merges", .mode = S_IRUGO | S_IWUSR },
.show = deadline_frontmerges_show,
.store = deadline_frontmerges_store,
};
-static struct deadline_fs_entry deadline_fifobatch_entry = {
+static struct elv_fs_entry deadline_fifobatch_entry = {
.attr = {.name = "fifo_batch", .mode = S_IRUGO | S_IWUSR },
.show = deadline_fifobatch_show,
.store = deadline_fifobatch_store,
};
-static struct attribute *default_attrs[] = {
+static struct attribute *deadline_attrs[] = {
&deadline_readexpire_entry.attr,
&deadline_writeexpire_entry.attr,
&deadline_writesstarved_entry.attr,
@@ -787,43 +784,6 @@
NULL,
};
-#define to_deadline(atr) container_of((atr), struct deadline_fs_entry, attr)
-
-static ssize_t
-deadline_attr_show(struct kobject *kobj, struct attribute *attr, char *page)
-{
- elevator_t *e = container_of(kobj, elevator_t, kobj);
- struct deadline_fs_entry *entry = to_deadline(attr);
-
- if (!entry->show)
- return -EIO;
-
- return entry->show(e->elevator_data, page);
-}
-
-static ssize_t
-deadline_attr_store(struct kobject *kobj, struct attribute *attr,
- const char *page, size_t length)
-{
- elevator_t *e = container_of(kobj, elevator_t, kobj);
- struct deadline_fs_entry *entry = to_deadline(attr);
-
- if (!entry->store)
- return -EIO;
-
- return entry->store(e->elevator_data, page, length);
-}
-
-static struct sysfs_ops deadline_sysfs_ops = {
- .show = deadline_attr_show,
- .store = deadline_attr_store,
-};
-
-static struct kobj_type deadline_ktype = {
- .sysfs_ops = &deadline_sysfs_ops,
- .default_attrs = default_attrs,
-};
-
static struct elevator_type iosched_deadline = {
.ops = {
.elevator_merge_fn = deadline_merge,
@@ -840,7 +800,7 @@
.elevator_exit_fn = deadline_exit_queue,
},
- .elevator_ktype = &deadline_ktype,
+ .elevator_attrs = deadline_attrs,
.elevator_name = "deadline",
.elevator_owner = THIS_MODULE,
};