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>
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@ -1087,8 +1087,8 @@ int flush_old_exec(struct linux_binprm * bprm)
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bprm->mm = NULL; /* We're using it now */
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bprm->mm = NULL; /* We're using it now */
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set_fs(USER_DS);
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set_fs(USER_DS);
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current->flags &=
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current->flags &= ~(PF_RANDOMIZE | PF_FORKNOEXEC | PF_KTHREAD |
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~(PF_RANDOMIZE | PF_FORKNOEXEC | PF_KTHREAD | PF_NOFREEZE);
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PF_NOFREEZE | PF_NO_SETAFFINITY);
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flush_thread();
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flush_thread();
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current->personality &= ~bprm->per_clear;
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current->personality &= ~bprm->per_clear;
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