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staging: erofs: localize erofs_workgroup_get 

Staticize erofs_workgroup_get since no external user
out of utils.c directly calls erofs_workgroup_get.

Signed-off-by: Gao Xiang <gaoxiang25@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Gao Xiang 2019-01-16 16:59:53 +08:00 committed by Greg Kroah-Hartman
parent 61c9314fdd
commit d60eff4396
2 changed files with 19 additions and 21 deletions
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21
drivers/staging/erofs/internal.h
View File

@ -252,28 +252,7 @@ static inline int erofs_wait_on_workgroup_freezed(struct erofs_workgroup *grp)
}
#endif
static inline int erofs_workgroup_get(struct erofs_workgroup *grp, int *ocnt)
{
int o;
repeat:
o = erofs_wait_on_workgroup_freezed(grp);
if (unlikely(o <= 0))
return -1;
if (unlikely(atomic_cmpxchg(&grp->refcount, o, o + 1) != o))
goto repeat;
*ocnt = o;
return 0;
}
#define __erofs_workgroup_get(grp) atomic_inc(&(grp)->refcount)
#define __erofs_workgroup_put(grp) atomic_dec(&(grp)->refcount)
extern int erofs_workgroup_put(struct erofs_workgroup *grp);
extern struct erofs_workgroup *erofs_find_workgroup(
struct super_block *sb, pgoff_t index, bool *tag);

19
drivers/staging/erofs/utils.c
View File

@ -31,6 +31,25 @@ struct page *erofs_allocpage(struct list_head *pool, gfp_t gfp)
static atomic_long_t erofs_global_shrink_cnt;
#ifdef CONFIG_EROFS_FS_ZIP
#define __erofs_workgroup_get(grp) atomic_inc(&(grp)->refcount)
#define __erofs_workgroup_put(grp) atomic_dec(&(grp)->refcount)
static int erofs_workgroup_get(struct erofs_workgroup *grp, int *ocnt)
{
int o;
repeat:
o = erofs_wait_on_workgroup_freezed(grp);
if (unlikely(o <= 0))
return -1;
if (unlikely(atomic_cmpxchg(&grp->refcount, o, o + 1) != o))
goto repeat;
*ocnt = o;
return 0;
}
struct erofs_workgroup *erofs_find_workgroup(
struct super_block *sb, pgoff_t index, bool *tag)