diff options
| author | Gao Xiang <gaoxiang25@huawei.com> | 2018-07-26 20:22:03 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-07-27 17:24:09 +0200 |
| commit | 2497ee41295c769dc74cb8bac7e03842bc51d331 (patch) | |
| tree | 680ddbe6352f42c885f4b82560737049de9be88a /drivers/staging/erofs/utils.c | |
| parent | 0d40d6e399c12c662eda395fe4f0602327d0d01f (diff) | |
staging: erofs: introduce superblock registration
In order to introducing shrinker solution for erofs,
let's manage all mounted erofs instances at first.
Signed-off-by: Gao Xiang <gaoxiang25@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/erofs/utils.c')
| -rw-r--r-- | drivers/staging/erofs/utils.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/staging/erofs/utils.c b/drivers/staging/erofs/utils.c index 3dec4f80ed99..6748def67e74 100644 --- a/drivers/staging/erofs/utils.c +++ b/drivers/staging/erofs/utils.c @@ -29,3 +29,20 @@ struct page *erofs_allocpage(struct list_head *pool, gfp_t gfp) return page; } +static DEFINE_MUTEX(erofs_sb_list_lock); +static LIST_HEAD(erofs_sb_list); + +void erofs_register_super(struct super_block *sb) +{ + mutex_lock(&erofs_sb_list_lock); + list_add(&EROFS_SB(sb)->list, &erofs_sb_list); + mutex_unlock(&erofs_sb_list_lock); +} + +void erofs_unregister_super(struct super_block *sb) +{ + mutex_lock(&erofs_sb_list_lock); + list_del(&EROFS_SB(sb)->list); + mutex_unlock(&erofs_sb_list_lock); +} + |