x86, mm: Separate x86_64 vmalloc_sync_all() into separate functions
No behavior change. Move some of vmalloc_sync_all() code into a new function sync_global_pgds() that will be useful for memory hotplug. Signed-off-by: Haicheng Li <haicheng.li@linux.intel.com> LKML-Reference: <4C6E4ECD.1090607@linux.intel.com> Reviewed-by: Wu Fengguang <fengguang.wu@intel.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
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committed by
H. Peter Anvin

parent
61c77326d1
commit
6afb5157b9
@@ -326,29 +326,7 @@ out:
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void vmalloc_sync_all(void)
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{
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unsigned long address;
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for (address = VMALLOC_START & PGDIR_MASK; address <= VMALLOC_END;
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address += PGDIR_SIZE) {
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const pgd_t *pgd_ref = pgd_offset_k(address);
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unsigned long flags;
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struct page *page;
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if (pgd_none(*pgd_ref))
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continue;
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spin_lock_irqsave(&pgd_lock, flags);
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list_for_each_entry(page, &pgd_list, lru) {
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pgd_t *pgd;
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pgd = (pgd_t *)page_address(page) + pgd_index(address);
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if (pgd_none(*pgd))
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set_pgd(pgd, *pgd_ref);
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else
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BUG_ON(pgd_page_vaddr(*pgd) != pgd_page_vaddr(*pgd_ref));
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}
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spin_unlock_irqrestore(&pgd_lock, flags);
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}
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sync_global_pgds(VMALLOC_START & PGDIR_MASK, VMALLOC_END);
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}
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/*
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