diff options
| author |   Eric W. Biederman <ebiederm@xmission.com> | 2006-06-26 00:25:51 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-26 09:58:25 -0700 |
| commit | de7587343bfebc186995ad294e3de0da382eb9bc (patch) | |
| tree | db5d696d19c8255bd58929516be79409743c6081 /fs/proc | |
| parent | [PATCH] proc: Remove tasklist_lock from proc_pid_readdir (diff) | |
| download | linux-dev-de7587343bfebc186995ad294e3de0da382eb9bc.tar.xz linux-dev-de7587343bfebc186995ad294e3de0da382eb9bc.zip | |
[PATCH] proc: Remove tasklist_lock from proc_pid_lookup() and proc_task_lookup()
Since we no longer need the tasklist_lock for get_task_struct the lookup
methods no longer need the tasklist_lock.
This just depends on my previous patch that makes get_task_struct() rcu
safe.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'fs/proc')
| -rw-r--r-- | fs/proc/base.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/fs/proc/base.c b/fs/proc/base.c index cc578a300a2b..8180579f8792 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -1940,11 +1940,11 @@ struct dentry *proc_pid_lookup(struct inode *dir, struct dentry * dentry, struct if (tgid == ~0U) goto out; - read_lock(&tasklist_lock); + rcu_read_lock(); task = find_task_by_pid(tgid); if (task) get_task_struct(task); - read_unlock(&tasklist_lock); + rcu_read_unlock(); if (!task) goto out; @@ -1988,11 +1988,11 @@ static struct dentry *proc_task_lookup(struct inode *dir, struct dentry * dentry if (tid == ~0U) goto out; - read_lock(&tasklist_lock); + rcu_read_lock(); task = find_task_by_pid(tid); if (task) get_task_struct(task); - read_unlock(&tasklist_lock); + rcu_read_unlock(); if (!task) goto out; if (leader->tgid != task->tgid) |