diff options
| author | Zhang Yi <zhang.yi20@zte.com.cn> | 2014-01-23 15:55:57 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-01-23 16:37:02 -0800 |
| commit | b88fae644e5e3922251a4b242f435f5e3b49c381 (patch) | |
| tree | 98bfd036a6df9cad49cb58a372a4fe94d89e7f5a /fs/exec.c | |
| parent | 8d38f203b46c36626285400b9466b08abecaaa80 (diff) | |
| download | lwn-b88fae644e5e3922251a4b242f435f5e3b49c381.tar.gz lwn-b88fae644e5e3922251a4b242f435f5e3b49c381.zip | |
exec: avoid propagating PF_NO_SETAFFINITY into userspace child
Userspace process doesn't want the PF_NO_SETAFFINITY, but its parent may be
a kernel worker thread which has PF_NO_SETAFFINITY set, and this worker thread
can do kernel_thread() to create the child.
Clearing this flag in usersapce child to enable its migrating capability.
Signed-off-by: Zhang Yi <zhang.yi20@zte.com.cn>
Acked-by: Oleg Nesterov <oleg@redhat.com>
Cc: 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 | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/exec.c b/fs/exec.c index 493b102a27c1..44218a7267b2 100644 --- a/fs/exec.c +++ b/fs/exec.c @@ -1087,8 +1087,8 @@ int flush_old_exec(struct linux_binprm * bprm) bprm->mm = NULL; /* We're using it now */ set_fs(USER_DS); - current->flags &= - ~(PF_RANDOMIZE | PF_FORKNOEXEC | PF_KTHREAD | PF_NOFREEZE); + current->flags &= ~(PF_RANDOMIZE | PF_FORKNOEXEC | PF_KTHREAD | + PF_NOFREEZE | PF_NO_SETAFFINITY); flush_thread(); current->personality &= ~bprm->per_clear; |