diff options
Diffstat (limited to 'drivers/md/dm-path-selector.c')
| -rw-r--r-- | drivers/md/dm-path-selector.c | 25 |
1 files changed, 6 insertions, 19 deletions
diff --git a/drivers/md/dm-path-selector.c b/drivers/md/dm-path-selector.c index ca1bb636a3e..fa0ccc585cb 100644 --- a/drivers/md/dm-path-selector.c +++ b/drivers/md/dm-path-selector.c @@ -9,16 +9,16 @@ * Path selector registration. */ -#include "dm.h" +#include <linux/device-mapper.h> +#include <linux/module.h> + #include "dm-path-selector.h" #include <linux/slab.h> struct ps_internal { struct path_selector_type pst; - struct list_head list; - long use; }; #define pst_to_psi(__pst) container_of((__pst), struct ps_internal, pst) @@ -44,12 +44,8 @@ static struct ps_internal *get_path_selector(const char *name) down_read(&_ps_lock); psi = __find_path_selector_type(name); - if (psi) { - if ((psi->use == 0) && !try_module_get(psi->pst.module)) - psi = NULL; - else - psi->use++; - } + if (psi && !try_module_get(psi->pst.module)) + psi = NULL; up_read(&_ps_lock); return psi; @@ -83,11 +79,7 @@ void dm_put_path_selector(struct path_selector_type *pst) if (!psi) goto out; - if (--psi->use == 0) - module_put(psi->pst.module); - - BUG_ON(psi->use < 0); - + module_put(psi->pst.module); out: up_read(&_ps_lock); } @@ -135,11 +127,6 @@ int dm_unregister_path_selector(struct path_selector_type *pst) return -EINVAL; } - if (psi->use) { - up_write(&_ps_lock); - return -ETXTBSY; - } - list_del(&psi->list); up_write(&_ps_lock); |