[RFC PATCH v2 4/7] KVM: Rename invalidate_begin to invalidate_start for consistency

[Takahiro Itazuri <itazur@amazon.com>]

Most MMU-related helpers use "_start" suffix.  Align with the prevailing
naming convention for consistency across MMU-related codebase.

```
$ git grep -E "invalidate(_range)?_start" | wc -l
123

$ git grep -E "invalidate(_range)?_begin" | wc -l
14
```

No functional change intended.

Signed-off-by: Takahiro Itazuri <itazur@amazon.com>
---
 arch/x86/kvm/mmu/mmu.c       |  2 +-
 include/linux/kvm_host.h     |  2 +-
 include/linux/mmu_notifier.h |  4 ++--
 virt/kvm/guest_memfd.c       | 14 +++++++-------
 virt/kvm/kvm_main.c          |  6 +++---
 5 files changed, 14 insertions(+), 14 deletions(-)

diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c
index d3e705ac4c6f..e82a357e2219 100644
--- a/arch/x86/kvm/mmu/mmu.c
+++ b/arch/x86/kvm/mmu/mmu.c
@@ -6859,7 +6859,7 @@ void kvm_zap_gfn_range(struct kvm *kvm, gfn_t gfn_start, gfn_t gfn_end)
 
 	write_lock(&kvm->mmu_lock);
 
-	kvm_mmu_invalidate_begin(kvm);
+	kvm_mmu_invalidate_start(kvm);
 
 	kvm_mmu_invalidate_range_add(kvm, gfn_start, gfn_end);
 
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index 2ea5d2f172f7..618a71894ed1 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -1566,7 +1566,7 @@ void kvm_mmu_free_memory_cache(struct kvm_mmu_memory_cache *mc);
 void *kvm_mmu_memory_cache_alloc(struct kvm_mmu_memory_cache *mc);
 #endif
 
-void kvm_mmu_invalidate_begin(struct kvm *kvm);
+void kvm_mmu_invalidate_start(struct kvm *kvm);
 void kvm_mmu_invalidate_range_add(struct kvm *kvm, gfn_t start, gfn_t end);
 void kvm_mmu_invalidate_end(struct kvm *kvm);
 bool kvm_mmu_unmap_gfn_range(struct kvm *kvm, struct kvm_gfn_range *range);
diff --git a/include/linux/mmu_notifier.h b/include/linux/mmu_notifier.h
index d1094c2d5fb6..8ecf36a84e3b 100644
--- a/include/linux/mmu_notifier.h
+++ b/include/linux/mmu_notifier.h
@@ -134,8 +134,8 @@ struct mmu_notifier_ops {
 	 * Invalidation of multiple concurrent ranges may be
 	 * optionally permitted by the driver. Either way the
 	 * establishment of sptes is forbidden in the range passed to
-	 * invalidate_range_begin/end for the whole duration of the
-	 * invalidate_range_begin/end critical section.
+	 * invalidate_range_start/end for the whole duration of the
+	 * invalidate_range_start/end critical section.
 	 *
 	 * invalidate_range_start() is called when all pages in the
 	 * range are still mapped and have at least a refcount of one.
diff --git a/virt/kvm/guest_memfd.c b/virt/kvm/guest_memfd.c
index 5d6e966d4f32..79f34dad0c2f 100644
--- a/virt/kvm/guest_memfd.c
+++ b/virt/kvm/guest_memfd.c
@@ -206,7 +206,7 @@ static enum kvm_gfn_range_filter kvm_gmem_get_invalidate_filter(struct inode *in
 	return KVM_FILTER_PRIVATE;
 }
 
-static void __kvm_gmem_invalidate_begin(struct gmem_file *f, pgoff_t start,
+static void __kvm_gmem_invalidate_start(struct gmem_file *f, pgoff_t start,
 					pgoff_t end,
 					enum kvm_gfn_range_filter attr_filter)
 {
@@ -230,7 +230,7 @@ static void __kvm_gmem_invalidate_begin(struct gmem_file *f, pgoff_t start,
 			found_memslot = true;
 
 			KVM_MMU_LOCK(kvm);
-			kvm_mmu_invalidate_begin(kvm);
+			kvm_mmu_invalidate_start(kvm);
 		}
 
 		flush |= kvm_mmu_unmap_gfn_range(kvm, &gfn_range);
@@ -243,7 +243,7 @@ static void __kvm_gmem_invalidate_begin(struct gmem_file *f, pgoff_t start,
 		KVM_MMU_UNLOCK(kvm);
 }
 
-static void kvm_gmem_invalidate_begin(struct inode *inode, pgoff_t start,
+static void kvm_gmem_invalidate_start(struct inode *inode, pgoff_t start,
 				      pgoff_t end)
 {
 	enum kvm_gfn_range_filter attr_filter;
@@ -252,7 +252,7 @@ static void kvm_gmem_invalidate_begin(struct inode *inode, pgoff_t start,
 	attr_filter = kvm_gmem_get_invalidate_filter(inode);
 
 	kvm_gmem_for_each_file(f, inode->i_mapping)
-		__kvm_gmem_invalidate_begin(f, start, end, attr_filter);
+		__kvm_gmem_invalidate_start(f, start, end, attr_filter);
 }
 
 static void __kvm_gmem_invalidate_end(struct gmem_file *f, pgoff_t start,
@@ -287,7 +287,7 @@ static long kvm_gmem_punch_hole(struct inode *inode, loff_t offset, loff_t len)
 	 */
 	filemap_invalidate_lock(inode->i_mapping);
 
-	kvm_gmem_invalidate_begin(inode, start, end);
+	kvm_gmem_invalidate_start(inode, start, end);
 
 	truncate_inode_pages_range(inode->i_mapping, offset, offset + len - 1);
 
@@ -401,7 +401,7 @@ static int kvm_gmem_release(struct inode *inode, struct file *file)
 	 * Zap all SPTEs pointed at by this file.  Do not free the backing
 	 * memory, as its lifetime is associated with the inode, not the file.
 	 */
-	__kvm_gmem_invalidate_begin(f, 0, -1ul,
+	__kvm_gmem_invalidate_start(f, 0, -1ul,
 				    kvm_gmem_get_invalidate_filter(inode));
 	__kvm_gmem_invalidate_end(f, 0, -1ul);
 
@@ -582,7 +582,7 @@ static int kvm_gmem_error_folio(struct address_space *mapping, struct folio *fol
 	start = folio->index;
 	end = start + folio_nr_pages(folio);
 
-	kvm_gmem_invalidate_begin(mapping->host, start, end);
+	kvm_gmem_invalidate_start(mapping->host, start, end);
 
 	/*
 	 * Do not truncate the range, what action is taken in response to the
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 60a8b7ca8ab4..5871882ff1db 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -678,7 +678,7 @@ static __always_inline int kvm_age_hva_range_no_flush(struct mmu_notifier *mn,
 	return kvm_age_hva_range(mn, start, end, handler, false);
 }
 
-void kvm_mmu_invalidate_begin(struct kvm *kvm)
+void kvm_mmu_invalidate_start(struct kvm *kvm)
 {
 	lockdep_assert_held_write(&kvm->mmu_lock);
 	/*
@@ -734,7 +734,7 @@ static int kvm_mmu_notifier_invalidate_range_start(struct mmu_notifier *mn,
 		.start		= range->start,
 		.end		= range->end,
 		.handler	= kvm_mmu_unmap_gfn_range,
-		.on_lock	= kvm_mmu_invalidate_begin,
+		.on_lock	= kvm_mmu_invalidate_start,
 		.flush_on_ret	= true,
 		.may_block	= mmu_notifier_range_blockable(range),
 	};
@@ -2571,7 +2571,7 @@ static int kvm_vm_set_mem_attributes(struct kvm *kvm, gfn_t start, gfn_t end,
 		.end = end,
 		.arg.attributes = attributes,
 		.handler = kvm_pre_set_memory_attributes,
-		.on_lock = kvm_mmu_invalidate_begin,
+		.on_lock = kvm_mmu_invalidate_start,
 		.flush_on_ret = true,
 		.may_block = true,
 	};
-- 
2.50.1