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| author |   Ingo Molnar <mingo@kernel.org> | 2021-04-20 10:13:58 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2021-04-20 10:13:58 +0200 |
| commit | d0d252b8ca7a636640a7dca8606edf7c3bcfe0b8 (patch) | |
| tree | 992b53f3c91669f3597e05997b61fa09db2155df /kernel/fork.c | |
| parent | sched/debug: Rename the sched_debug parameter to sched_verbose (diff) | |
| parent | Linux 5.12-rc8 (diff) | |
| download | linux-dev-d0d252b8ca7a636640a7dca8606edf7c3bcfe0b8.tar.xz linux-dev-d0d252b8ca7a636640a7dca8606edf7c3bcfe0b8.zip | |
Merge tag 'v5.12-rc8' into sched/core, to pick up fixes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/fork.c')
| -rw-r--r-- | kernel/fork.c | 24 |
1 files changed, 16 insertions, 8 deletions
diff --git a/kernel/fork.c b/kernel/fork.c index 3c43a9f3e75c..a1a763019bfb 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -994,6 +994,13 @@ static void mm_init_owner(struct mm_struct *mm, struct task_struct *p) #endif } +static void mm_init_pasid(struct mm_struct *mm) +{ +#ifdef CONFIG_IOMMU_SUPPORT + mm->pasid = INIT_PASID; +#endif +} + static void mm_init_uprobes_state(struct mm_struct *mm) { #ifdef CONFIG_UPROBES @@ -1024,6 +1031,7 @@ static struct mm_struct *mm_init(struct mm_struct *mm, struct task_struct *p, mm_init_cpumask(mm); mm_init_aio(mm); mm_init_owner(mm, p); + mm_init_pasid(mm); RCU_INIT_POINTER(mm->exe_file, NULL); mmu_notifier_subscriptions_init(mm); init_tlb_flush_pending(mm); @@ -1940,8 +1948,14 @@ static __latent_entropy struct task_struct *copy_process( p = dup_task_struct(current, node); if (!p) goto fork_out; - if (args->io_thread) + if (args->io_thread) { + /* + * Mark us an IO worker, and block any signal that isn't + * fatal or STOP + */ p->flags |= PF_IO_WORKER; + siginitsetinv(&p->blocked, sigmask(SIGKILL)|sigmask(SIGSTOP)); + } /* * This _must_ happen before we call free_task(), i.e. before we jump @@ -2431,14 +2445,8 @@ struct task_struct *create_io_thread(int (*fn)(void *), void *arg, int node) .stack_size = (unsigned long)arg, .io_thread = 1, }; - struct task_struct *tsk; - tsk = copy_process(NULL, 0, node, &args); - if (!IS_ERR(tsk)) { - sigfillset(&tsk->blocked); - sigdelsetmask(&tsk->blocked, sigmask(SIGKILL)); - } - return tsk; + return copy_process(NULL, 0, node, &args); } /* |