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feat(mm): 修复mmap未延迟分配内存的问题 (#837)

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* 20240524 3:40

* 20240527 0010

* 修复mmap未延迟分配内存的问题

* Revert "Merge branch 'patch-add-file-mapping' into patch-fix-mmap"

This reverts commit 8eb687c60b, reversing
changes made to 33e9f0b34f.
This commit is contained in:
MemoryShore
2024-05-28 20:06:23 +08:00
committed by GitHub
parent 3d4cd853a3
commit de199e3c86
4 changed files with 21 additions and 18 deletions
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5
kernel/src/mm/page.rs
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@ -861,6 +861,11 @@ impl<Arch: MemoryManagementArch, F: FrameAllocator> PageMapper<Arch, F> {
let phys: PhysAddr = self.frame_allocator.allocate_one()?;
compiler_fence(Ordering::SeqCst);
unsafe {
let vaddr = MMArch::phys_2_virt(phys).unwrap();
MMArch::write_bytes(vaddr, 0, MMArch::PAGE_SIZE);
}
let mut page_manager_guard: SpinLockGuard<'static, PageManager> =
page_manager_lock_irqsave();
if !page_manager_guard.contains(&phys) {