[PATCH V6 08/10] fork: remove create_io_thread
flat view
STALE1764d
From: Mike Christie <michael.christie@oracle.com>
Date: 2021-11-29 19:50:10
Also in:
lkml
Subsystem:
exec & binfmt api, elf, memory management - core, scheduler, the rest · Maintainers:
Kees Cook, Andrew Morton, David Hildenbrand, Ingo Molnar, Peter Zijlstra, Juri Lelli, Vincent Guittot, Linus Torvalds
create_io_thread is not used anymore so remove it. Signed-off-by: Mike Christie <michael.christie@oracle.com> --- include/linux/sched/task.h | 1 - kernel/fork.c | 22 ---------------------- 2 files changed, 23 deletions(-)
diff --git a/include/linux/sched/task.h b/include/linux/sched/task.h
index ecb21c0d95ce..cef69ce64e6f 100644
--- a/include/linux/sched/task.h
+++ b/include/linux/sched/task.h@@ -89,7 +89,6 @@ extern void exit_files(struct task_struct *); extern void exit_itimers(struct signal_struct *); extern pid_t kernel_clone(struct kernel_clone_args *kargs); -struct task_struct *create_io_thread(int (*fn)(void *), void *arg, int node); struct task_struct *fork_idle(int); struct mm_struct *copy_init_mm(void); extern pid_t kernel_thread(int (*fn)(void *), void *arg, unsigned long flags);
diff --git a/kernel/fork.c b/kernel/fork.c
index e72239ae1e08..3d4586502190 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c@@ -2521,28 +2521,6 @@ struct mm_struct *copy_init_mm(void) return dup_mm(NULL, &init_mm); } -/* - * This is like kernel_clone(), but shaved down and tailored to just - * creating io_uring workers. It returns a created task, or an error pointer. - * The returned task is inactive, and the caller must fire it up through - * wake_up_new_task(p). All signals are blocked in the created task. - */ -struct task_struct *create_io_thread(int (*fn)(void *), void *arg, int node) -{ - unsigned long flags = CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD| - CLONE_IO; - struct kernel_clone_args args = { - .flags = ((lower_32_bits(flags) | CLONE_VM | - CLONE_UNTRACED) & ~CSIGNAL), - .exit_signal = (lower_32_bits(flags) & CSIGNAL), - .stack = (unsigned long)fn, - .stack_size = (unsigned long)arg, - .worker_flags = USER_WORKER | USER_WORKER_IO, - }; - - return copy_process(NULL, 0, node, &args); -} - static bool user_worker_flags_valid(struct kernel_clone_args *kargs) { /* Verify that no unknown flags are passed along. */
--
2.25.1
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