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authorIngo Molnar <mingo@elte.hu>2010-07-01 08:49:28 +0200
committerIngo Molnar <mingo@elte.hu>2010-07-01 09:31:25 +0200
commit0a54cec0c25cc49e3b68b14c205f1f6cff13f5e1 (patch)
treeeb4e63ee9ae1fcaf9aa53a1668e55c09516052d9 /kernel/futex.c
parentec8c27e04f89a7575ca2c4facb99152e03d6a99c (diff)
parent980019d74e4b2428362b36a0506519d6d9460800 (diff)
Merge branch 'linus' into core/rcu
Conflicts: fs/fs-writeback.c Merge reason: Resolve the conflict Note, i picked the version from Linus's tree, which effectively reverts the fs-writeback.c bits of: b97181f: fs: remove all rcu head initializations, except on_stack initializations As the upstream changes to this file changed this code heavily and the first attempt to resolve the conflict resulted in a non-booting kernel. It's safer to re-try this portion of the commit cleanly. Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/futex.c')
-rw-r--r--kernel/futex.c17
1 files changed, 4 insertions, 13 deletions
diff --git a/kernel/futex.c b/kernel/futex.c
index e7a35f1039e7..6a3a5fa1526d 100644
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -429,20 +429,11 @@ static void free_pi_state(struct futex_pi_state *pi_state)
static struct task_struct * futex_find_get_task(pid_t pid)
{
struct task_struct *p;
- const struct cred *cred = current_cred(), *pcred;
rcu_read_lock();
p = find_task_by_vpid(pid);
- if (!p) {
- p = ERR_PTR(-ESRCH);
- } else {
- pcred = __task_cred(p);
- if (cred->euid != pcred->euid &&
- cred->euid != pcred->uid)
- p = ERR_PTR(-ESRCH);
- else
- get_task_struct(p);
- }
+ if (p)
+ get_task_struct(p);
rcu_read_unlock();
@@ -564,8 +555,8 @@ lookup_pi_state(u32 uval, struct futex_hash_bucket *hb,
if (!pid)
return -ESRCH;
p = futex_find_get_task(pid);
- if (IS_ERR(p))
- return PTR_ERR(p);
+ if (!p)
+ return -ESRCH;
/*
* We need to look at the task state flags to figure out,