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authorAl Viro <viro@zeniv.linux.org.uk>2006-03-18 18:35:43 -0500
committerAl Viro <viro@zeniv.linux.org.uk>2006-03-18 18:35:43 -0500
commit3d1ab40f4c20767afbd361b258a531d73e3e6fc2 (patch)
tree2da79cc8b47a98b0496b6e762fa790a8d547977b /block/as-iosched.c
parent1cc9be68ebcc1de9904bf225441613878da9c0d8 (diff)
downloadlinux-2.6.34-ux500-3d1ab40f4c20767afbd361b258a531d73e3e6fc2.tar.gz
[PATCH] elevator_t lifetime rules and sysfs fixes
Diffstat (limited to 'block/as-iosched.c')
-rw-r--r--block/as-iosched.c69
1 files changed, 15 insertions, 54 deletions
diff --git a/block/as-iosched.c b/block/as-iosched.c
index 55a997fc4bb..3fb60eb7093 100644
--- a/block/as-iosched.c
+++ b/block/as-iosched.c
@@ -1709,11 +1709,6 @@ static int as_init_queue(request_queue_t *q, elevator_t *e)
/*
* sysfs parts below
*/
-struct as_fs_entry {
- struct attribute attr;
- ssize_t (*show)(struct as_data *, char *);
- ssize_t (*store)(struct as_data *, const char *, size_t);
-};
static ssize_t
as_var_show(unsigned int var, char *page)
@@ -1730,8 +1725,9 @@ as_var_store(unsigned long *var, const char *page, size_t count)
return count;
}
-static ssize_t as_est_show(struct as_data *ad, char *page)
+static ssize_t as_est_show(elevator_t *e, char *page)
{
+ struct as_data *ad = e->elevator_data;
int pos = 0;
pos += sprintf(page+pos, "%lu %% exit probability\n",
@@ -1747,8 +1743,9 @@ static ssize_t as_est_show(struct as_data *ad, char *page)
}
#define SHOW_FUNCTION(__FUNC, __VAR) \
-static ssize_t __FUNC(struct as_data *ad, char *page) \
+static ssize_t __FUNC(elevator_t *e, char *page) \
{ \
+ struct as_data *ad = e->elevator_data; \
return as_var_show(jiffies_to_msecs((__VAR)), (page)); \
}
SHOW_FUNCTION(as_readexpire_show, ad->fifo_expire[REQ_SYNC]);
@@ -1759,9 +1756,10 @@ SHOW_FUNCTION(as_write_batchexpire_show, ad->batch_expire[REQ_ASYNC]);
#undef SHOW_FUNCTION
#define STORE_FUNCTION(__FUNC, __PTR, MIN, MAX) \
-static ssize_t __FUNC(struct as_data *ad, const char *page, size_t count) \
+static ssize_t __FUNC(elevator_t *e, const char *page, size_t count) \
{ \
- int ret = as_var_store(__PTR, (page), count); \
+ struct as_data *ad = e->elevator_data; \
+ int ret = as_var_store(__PTR, (page), count); \
if (*(__PTR) < (MIN)) \
*(__PTR) = (MIN); \
else if (*(__PTR) > (MAX)) \
@@ -1778,37 +1776,37 @@ STORE_FUNCTION(as_write_batchexpire_store,
&ad->batch_expire[REQ_ASYNC], 0, INT_MAX);
#undef STORE_FUNCTION
-static struct as_fs_entry as_est_entry = {
+static struct elv_fs_entry as_est_entry = {
.attr = {.name = "est_time", .mode = S_IRUGO },
.show = as_est_show,
};
-static struct as_fs_entry as_readexpire_entry = {
+static struct elv_fs_entry as_readexpire_entry = {
.attr = {.name = "read_expire", .mode = S_IRUGO | S_IWUSR },
.show = as_readexpire_show,
.store = as_readexpire_store,
};
-static struct as_fs_entry as_writeexpire_entry = {
+static struct elv_fs_entry as_writeexpire_entry = {
.attr = {.name = "write_expire", .mode = S_IRUGO | S_IWUSR },
.show = as_writeexpire_show,
.store = as_writeexpire_store,
};
-static struct as_fs_entry as_anticexpire_entry = {
+static struct elv_fs_entry as_anticexpire_entry = {
.attr = {.name = "antic_expire", .mode = S_IRUGO | S_IWUSR },
.show = as_anticexpire_show,
.store = as_anticexpire_store,
};
-static struct as_fs_entry as_read_batchexpire_entry = {
+static struct elv_fs_entry as_read_batchexpire_entry = {
.attr = {.name = "read_batch_expire", .mode = S_IRUGO | S_IWUSR },
.show = as_read_batchexpire_show,
.store = as_read_batchexpire_store,
};
-static struct as_fs_entry as_write_batchexpire_entry = {
+static struct elv_fs_entry as_write_batchexpire_entry = {
.attr = {.name = "write_batch_expire", .mode = S_IRUGO | S_IWUSR },
.show = as_write_batchexpire_show,
.store = as_write_batchexpire_store,
};
-static struct attribute *default_attrs[] = {
+static struct attribute *as_attrs[] = {
&as_est_entry.attr,
&as_readexpire_entry.attr,
&as_writeexpire_entry.attr,
@@ -1818,43 +1816,6 @@ static struct attribute *default_attrs[] = {
NULL,
};
-#define to_as(atr) container_of((atr), struct as_fs_entry, attr)
-
-static ssize_t
-as_attr_show(struct kobject *kobj, struct attribute *attr, char *page)
-{
- elevator_t *e = container_of(kobj, elevator_t, kobj);
- struct as_fs_entry *entry = to_as(attr);
-
- if (!entry->show)
- return -EIO;
-
- return entry->show(e->elevator_data, page);
-}
-
-static ssize_t
-as_attr_store(struct kobject *kobj, struct attribute *attr,
- const char *page, size_t length)
-{
- elevator_t *e = container_of(kobj, elevator_t, kobj);
- struct as_fs_entry *entry = to_as(attr);
-
- if (!entry->store)
- return -EIO;
-
- return entry->store(e->elevator_data, page, length);
-}
-
-static struct sysfs_ops as_sysfs_ops = {
- .show = as_attr_show,
- .store = as_attr_store,
-};
-
-static struct kobj_type as_ktype = {
- .sysfs_ops = &as_sysfs_ops,
- .default_attrs = default_attrs,
-};
-
static struct elevator_type iosched_as = {
.ops = {
.elevator_merge_fn = as_merge,
@@ -1876,7 +1837,7 @@ static struct elevator_type iosched_as = {
.trim = as_trim,
},
- .elevator_ktype = &as_ktype,
+ .elevator_attrs = as_attrs,
.elevator_name = "anticipatory",
.elevator_owner = THIS_MODULE,
};