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| author | Oleg Nesterov <oleg@redhat.com> | 2012-03-05 14:59:13 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-03-05 15:49:42 -0800 |
| commit | 57b59c4a1400fa6c34764eab2e35a8762dc05a09 (patch) | |
| tree | e50e6a6f9f7fcd897856e5cdaca3d3caa18377d6 /fs/exec.c | |
| parent | d68b46fe16ad59b3a5f51ec73daaa5dc06753798 (diff) | |
| download | lwn-57b59c4a1400fa6c34764eab2e35a8762dc05a09.tar.gz lwn-57b59c4a1400fa6c34764eab2e35a8762dc05a09.zip | |
coredump_wait: don't call complete_vfork_done()
Now that CLONE_VFORK is killable, coredump_wait() no longer needs
complete_vfork_done(). zap_threads() should find and kill all tasks with
the same ->mm, this includes our parent if ->vfork_done is set.
mm_release() becomes the only caller, unexport complete_vfork_done().
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/exec.c')
| -rw-r--r-- | fs/exec.c | 14 |
1 files changed, 2 insertions, 12 deletions
diff --git a/fs/exec.c b/fs/exec.c index dccdcec913e9..153dee14fe55 100644 --- a/fs/exec.c +++ b/fs/exec.c @@ -1926,19 +1926,9 @@ static int coredump_wait(int exit_code, struct core_state *core_state) core_waiters = zap_threads(tsk, mm, core_state, exit_code); up_write(&mm->mmap_sem); - if (unlikely(core_waiters < 0)) - goto fail; - - /* - * Make sure nobody is waiting for us to release the VM, - * otherwise we can deadlock when we wait on each other - */ - if (tsk->vfork_done) - complete_vfork_done(tsk); - - if (core_waiters) + if (core_waiters > 0) wait_for_completion(&core_state->startup); -fail: + return core_waiters; } |