diff options
| author | James Morris <james.morris@microsoft.com> | 2018-09-04 11:35:54 -0700 |
|---|---|---|
| committer | James Morris <james.morris@microsoft.com> | 2018-09-04 11:35:54 -0700 |
| commit | e42f6f9be4f83c537aa81b4c6239ea94ff5b29ce (patch) | |
| tree | f956a5ea0e83fc6d0df3e64681e7bbc1f201f3ee /kernel/user.c | |
| parent | 4408e300a67ab2ce2505087986a9fe922c800ffd (diff) | |
| parent | 57361846b52bc686112da6ca5368d11210796804 (diff) | |
Merge tag 'v4.19-rc2' into next-general
Sync to Linux 4.19-rc2 for downstream developers.
Diffstat (limited to 'kernel/user.c')
| -rw-r--r-- | kernel/user.c | 11 |
1 files changed, 4 insertions, 7 deletions
diff --git a/kernel/user.c b/kernel/user.c index 36288d840675..0df9b1640b2a 100644 --- a/kernel/user.c +++ b/kernel/user.c @@ -96,7 +96,7 @@ static DEFINE_SPINLOCK(uidhash_lock); /* root_user.__count is 1, for init task cred */ struct user_struct root_user = { - .__count = ATOMIC_INIT(1), + .__count = REFCOUNT_INIT(1), .processes = ATOMIC_INIT(1), .sigpending = ATOMIC_INIT(0), .locked_shm = 0, @@ -123,7 +123,7 @@ static struct user_struct *uid_hash_find(kuid_t uid, struct hlist_head *hashent) hlist_for_each_entry(user, hashent, uidhash_node) { if (uid_eq(user->uid, uid)) { - atomic_inc(&user->__count); + refcount_inc(&user->__count); return user; } } @@ -169,11 +169,8 @@ void free_uid(struct user_struct *up) if (!up) return; - local_irq_save(flags); - if (atomic_dec_and_lock(&up->__count, &uidhash_lock)) + if (refcount_dec_and_lock_irqsave(&up->__count, &uidhash_lock, &flags)) free_user(up, flags); - else - local_irq_restore(flags); } struct user_struct *alloc_uid(kuid_t uid) @@ -191,7 +188,7 @@ struct user_struct *alloc_uid(kuid_t uid) goto out_unlock; new->uid = uid; - atomic_set(&new->__count, 1); + refcount_set(&new->__count, 1); ratelimit_state_init(&new->ratelimit, HZ, 100); ratelimit_set_flags(&new->ratelimit, RATELIMIT_MSG_ON_RELEASE); |