add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/mm/init-mm.c
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@@ -5,10 +5,11 @@
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 #include <linux/spinlock.h>
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 #include <linux/list.h>
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 #include <linux/cpumask.h>
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+#include <linux/mman.h>
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+#include <linux/pgtable.h>
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 #include <linux/atomic.h>
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 #include <linux/user_namespace.h>
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-#include <asm/pgtable.h>
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 #include <asm/mmu.h>
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 #ifndef INIT_MM_CONTEXT
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@@ -27,14 +28,18 @@
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  */
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 struct mm_struct init_mm = {
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 	.mm_rb		= RB_ROOT,
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+#ifdef CONFIG_SPECULATIVE_PAGE_FAULT
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+	.mm_rb_lock	= __RW_LOCK_UNLOCKED(init_mm.mm_rb_lock),
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+#endif
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 	.pgd		= swapper_pg_dir,
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 	.mm_users	= ATOMIC_INIT(2),
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 	.mm_count	= ATOMIC_INIT(1),
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-	.mmap_sem	= __RWSEM_INITIALIZER(init_mm.mmap_sem),
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+	.write_protect_seq = SEQCNT_ZERO(init_mm.write_protect_seq),
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+	MMAP_LOCK_INITIALIZER(init_mm)
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 	.page_table_lock =  __SPIN_LOCK_UNLOCKED(init_mm.page_table_lock),
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 	.arg_lock	=  __SPIN_LOCK_UNLOCKED(init_mm.arg_lock),
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 	.mmlist		= LIST_HEAD_INIT(init_mm.mmlist),
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 	.user_ns	= &init_user_ns,
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-	.cpu_bitmap	= { [BITS_TO_LONGS(NR_CPUS)] = 0},
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+	.cpu_bitmap	= CPU_BITS_NONE,
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 	INIT_MM_CONTEXT(init_mm)
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 };