VisionFive2 Linux kernel

author: Michel Lespinasse <walken@google.com> 2020-06-08 21:33:25 -0700 committer: Linus Torvalds <torvalds@linux-foundation.org> 2020-06-09 09:39:14 -0700 commit: d8ed45c5dcd455fc5848d47f86883a1b872ac0d0 parent: 0adf65f53aae86aa86d8dccada02890545de8938

Commit Summary:

mmap locking API: use coccinelle to convert mmap_sem rwsem call sites

Diffstat:

2 files changed, 6 insertions, 6 deletions

diff --git a/virt/kvm/async_pf.c b/virt/kvm/async_pf.c
index f1e07fae84e9..5f8f3e8b5add 100644
--- a/virt/kvm/async_pf.c
+++ b/virt/kvm/async_pf.c
@@ -60,11 +60,11 @@ static void async_pf_execute(struct work_struct *work)
 	 * mm and might be done in another context, so we must
 	 * access remotely.
 	 */
-	down_read(&mm->mmap_sem);
+	mmap_read_lock(mm);
 	get_user_pages_remote(NULL, mm, addr, 1, FOLL_WRITE, NULL, NULL,
 			&locked);
 	if (locked)
-		up_read(&mm->mmap_sem);
+		mmap_read_unlock(mm);
 
 	if (IS_ENABLED(CONFIG_KVM_ASYNC_PF_SYNC))
 		kvm_arch_async_page_present(vcpu, apf);
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index abdfb01b3e36..0dfee7576e88 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -1631,7 +1631,7 @@ unsigned long kvm_host_page_size(struct kvm_vcpu *vcpu, gfn_t gfn)
 	if (kvm_is_error_hva(addr))
 		return PAGE_SIZE;
 
-	down_read(&current->mm->mmap_sem);
+	mmap_read_lock(current->mm);
 	vma = find_vma(current->mm, addr);
 	if (!vma)
 		goto out;
@@ -1639,7 +1639,7 @@ unsigned long kvm_host_page_size(struct kvm_vcpu *vcpu, gfn_t gfn)
 	size = vma_kernel_pagesize(vma);
 
 out:
-	up_read(&current->mm->mmap_sem);
+	mmap_read_unlock(current->mm);
 
 	return size;
 }
@@ -1892,7 +1892,7 @@ static kvm_pfn_t hva_to_pfn(unsigned long addr, bool atomic, bool *async,
 	if (npages == 1)
 		return pfn;
 
-	down_read(&current->mm->mmap_sem);
+	mmap_read_lock(current->mm);
 	if (npages == -EHWPOISON ||
 	      (!async && check_user_page_hwpoison(addr))) {
 		pfn = KVM_PFN_ERR_HWPOISON;
@@ -1916,7 +1916,7 @@ retry:
 		pfn = KVM_PFN_ERR_FAULT;
 	}
 exit:
-	up_read(&current->mm->mmap_sem);
+	mmap_read_unlock(current->mm);
 	return pfn;
 }