diff options
| author | Al Viro <viro@zeniv.linux.org.uk> | 2015-01-10 18:47:38 +0100 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2015-01-26 05:17:27 +0100 |
| commit | 34cece2e8a1d2b66f00e153a19b80b4d4cec4eb8 (patch) | |
| tree | acb981809dfccd4aead012d604650435be41f7ef /kernel/acct.c | |
| parent | dcache: let the dentry count go down to zero without taking d_lock (diff) | |
| download | linux-34cece2e8a1d2b66f00e153a19b80b4d4cec4eb8.tar.xz linux-34cece2e8a1d2b66f00e153a19b80b4d4cec4eb8.zip | |
take count and rcu_head out of fs_pin
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to '')
| -rw-r--r-- | kernel/acct.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/kernel/acct.c b/kernel/acct.c index a74f3d1a0c26..b8fbefb8678f 100644 --- a/kernel/acct.c +++ b/kernel/acct.c @@ -80,6 +80,8 @@ static void do_acct_process(struct bsd_acct_struct *acct); struct bsd_acct_struct { struct fs_pin pin; + atomic_long_t count; + struct rcu_head rcu; struct mutex lock; int active; unsigned long needcheck; @@ -126,8 +128,8 @@ out: static void acct_put(struct bsd_acct_struct *p) { - if (atomic_long_dec_and_test(&p->pin.count)) - kfree_rcu(p, pin.rcu); + if (atomic_long_dec_and_test(&p->count)) + kfree_rcu(p, rcu); } static struct bsd_acct_struct *acct_get(struct pid_namespace *ns) @@ -141,7 +143,7 @@ again: rcu_read_unlock(); return NULL; } - if (!atomic_long_inc_not_zero(&res->pin.count)) { + if (!atomic_long_inc_not_zero(&res->count)) { rcu_read_unlock(); cpu_relax(); goto again; @@ -179,7 +181,7 @@ static void acct_kill(struct bsd_acct_struct *acct, pin_remove(&acct->pin); ns->bacct = new; acct->ns = NULL; - atomic_long_dec(&acct->pin.count); + atomic_long_dec(&acct->count); mutex_unlock(&acct->lock); acct_put(acct); } @@ -189,7 +191,7 @@ static void acct_pin_kill(struct fs_pin *pin) { struct bsd_acct_struct *acct; acct = container_of(pin, struct bsd_acct_struct, pin); - if (!atomic_long_inc_not_zero(&pin->count)) { + if (!atomic_long_inc_not_zero(&acct->count)) { rcu_read_unlock(); cpu_relax(); return; @@ -250,7 +252,7 @@ static int acct_on(struct filename *pathname) mnt = file->f_path.mnt; file->f_path.mnt = internal; - atomic_long_set(&acct->pin.count, 1); + atomic_long_set(&acct->count, 1); acct->pin.kill = acct_pin_kill; acct->file = file; acct->needcheck = jiffies; |