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Should have been included in the previous commit.

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This commit is contained in:
Steven Whitehouse 2001-09-18 16:53:18 +00:00
parent 397f76ad31
commit ab05a11ef5
1 changed files with 7 additions and 42 deletions
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49
driver/device-mapper/dm.c
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@ -561,27 +561,6 @@ static struct mapped_device *alloc_dev(int minor)
return md;
}
static inline struct mapped_device *__find_by_name(const char *name)
{
int i;
for (i = 0; i < MAX_DEVICES; i++)
if (_devs[i] && !strcmp(_devs[i]->name, name))
return _devs[i];
return 0;
}
struct mapped_device *dm_find_by_name(const char *name)
{
struct mapped_device *md;
down_read(&_dev_lock);
md = __find_by_name(name);
up_read(&_dev_lock);
return md;
}
struct mapped_device *dm_find_by_minor(int minor)
{
struct mapped_device *md;
@ -650,36 +629,28 @@ static void dm_sbin_hotplug(struct mapped_device *md, int create)
/*
* constructor for a new device
*/
int dm_create(const char *name, int minor)
struct mapped_device *dm_create(const char *name, int minor)
{
int r;
struct mapped_device *md;
if (minor >= MAX_DEVICES)
return -ENXIO;
return ERR_PTR(-ENXIO);
if (!(md = alloc_dev(minor)))
return -ENXIO;
return ERR_PTR(-ENXIO);
down_write(&_dev_lock);
if (__find_by_name(name)) {
WARN("device with that name already exists");
kfree(md);
up_write(&_dev_lock);
return -EINVAL;
}
strcpy(md->name, name);
if ((r = register_device(md))) {
up_write(&_dev_lock);
return r;
return ERR_PTR(r);
}
up_write(&_dev_lock);
dm_sbin_hotplug(md, 1);
return 0;
return md;
}
/*
@ -687,17 +658,11 @@ int dm_create(const char *name, int minor)
* deliberately not destroyed, dm-fs should manage
* table objects.
*/
int dm_remove(const char *name)
int dm_remove(struct mapped_device *md)
{
struct mapped_device *md;
int minor, r;
down_write(&_dev_lock);
if (!(md = __find_by_name(name))) {
up_write(&_dev_lock);
return -ENXIO;
}
if (md->use_count) {
up_write(&_dev_lock);
return -EPERM;
@ -709,11 +674,11 @@ int dm_remove(const char *name)
}
minor = MINOR(md->dev);
kfree(md);
_devs[minor] = 0;
up_write(&_dev_lock);
dm_sbin_hotplug(md, 0);
kfree(md);
return 0;
}