[RFC 04/11] khugepaged: rename hpage_collapse_* to khugepaged_*

[Nico Pache <npache@redhat.com>]

functions in khugepaged.c use a mix of hpage_collapse and khugepaged
as the function prefix.

rename all of them to khugepaged to keep things consistent and slightly
shorten the function names.

Signed-off-by: Nico Pache <npache@redhat.com>
---
 mm/khugepaged.c | 52 ++++++++++++++++++++++++-------------------------
 1 file changed, 26 insertions(+), 26 deletions(-)

diff --git a/mm/khugepaged.c b/mm/khugepaged.c
index ba85a8fcee88..90de49d11a98 100644
--- a/mm/khugepaged.c
+++ b/mm/khugepaged.c
@@ -402,14 +402,14 @@ void __init khugepaged_destroy(void)
 	kmem_cache_destroy(mm_slot_cache);
 }
 
-static inline int hpage_collapse_test_exit(struct mm_struct *mm)
+static inline int khugepaged_test_exit(struct mm_struct *mm)
 {
 	return atomic_read(&mm->mm_users) == 0;
 }
 
-static inline int hpage_collapse_test_exit_or_disable(struct mm_struct *mm)
+static inline int khugepaged_test_exit_or_disable(struct mm_struct *mm)
 {
-	return hpage_collapse_test_exit(mm) ||
+	return khugepaged_test_exit(mm) ||
 	       test_bit(MMF_DISABLE_THP, &mm->flags);
 }
 
@@ -444,7 +444,7 @@ void __khugepaged_enter(struct mm_struct *mm)
 	int wakeup;
 
 	/* __khugepaged_exit() must not run from under us */
-	VM_BUG_ON_MM(hpage_collapse_test_exit(mm), mm);
+	VM_BUG_ON_MM(khugepaged_test_exit(mm), mm);
 	if (unlikely(test_and_set_bit(MMF_VM_HUGEPAGE, &mm->flags)))
 		return;
 
@@ -503,7 +503,7 @@ void __khugepaged_exit(struct mm_struct *mm)
 	} else if (mm_slot) {
 		/*
 		 * This is required to serialize against
-		 * hpage_collapse_test_exit() (which is guaranteed to run
+		 * khugepaged_test_exit() (which is guaranteed to run
 		 * under mmap sem read mode). Stop here (after we return all
 		 * pagetables will be destroyed) until khugepaged has finished
 		 * working on the pagetables under the mmap_lock.
@@ -606,7 +606,7 @@ static int __collapse_huge_page_isolate(struct vm_area_struct *vma,
 		folio = page_folio(page);
 		VM_BUG_ON_FOLIO(!folio_test_anon(folio), folio);
 
-		/* See hpage_collapse_scan_pmd(). */
+		/* See khugepaged_scan_pmd(). */
 		if (folio_likely_mapped_shared(folio)) {
 			++shared;
 			if (cc->is_khugepaged &&
@@ -851,7 +851,7 @@ struct collapse_control khugepaged_collapse_control = {
 	.is_khugepaged = true,
 };
 
-static bool hpage_collapse_scan_abort(int nid, struct collapse_control *cc)
+static bool khugepaged_scan_abort(int nid, struct collapse_control *cc)
 {
 	int i;
 
@@ -886,7 +886,7 @@ static inline gfp_t alloc_hugepage_khugepaged_gfpmask(void)
 }
 
 #ifdef CONFIG_NUMA
-static int hpage_collapse_find_target_node(struct collapse_control *cc)
+static int khugepaged_find_target_node(struct collapse_control *cc)
 {
 	int nid, target_node = 0, max_value = 0;
 
@@ -905,7 +905,7 @@ static int hpage_collapse_find_target_node(struct collapse_control *cc)
 	return target_node;
 }
 #else
-static int hpage_collapse_find_target_node(struct collapse_control *cc)
+static int khugepaged_find_target_node(struct collapse_control *cc)
 {
 	return 0;
 }
@@ -925,7 +925,7 @@ static int hugepage_vma_revalidate(struct mm_struct *mm, unsigned long address,
 	struct vm_area_struct *vma;
 	unsigned long tva_flags = cc->is_khugepaged ? TVA_ENFORCE_SYSFS : 0;
 
-	if (unlikely(hpage_collapse_test_exit_or_disable(mm)))
+	if (unlikely(khugepaged_test_exit_or_disable(mm)))
 		return SCAN_ANY_PROCESS;
 
 	*vmap = vma = find_vma(mm, address);
@@ -988,7 +988,7 @@ static int check_pmd_still_valid(struct mm_struct *mm,
 
 /*
  * Bring missing pages in from swap, to complete THP collapse.
- * Only done if hpage_collapse_scan_pmd believes it is worthwhile.
+ * Only done if khugepaged_scan_pmd believes it is worthwhile.
  *
  * Called and returns without pte mapped or spinlocks held.
  * Returns result: if not SCAN_SUCCEED, mmap_lock has been released.
@@ -1074,7 +1074,7 @@ static int alloc_charge_folio(struct folio **foliop, struct mm_struct *mm,
 {
 	gfp_t gfp = (cc->is_khugepaged ? alloc_hugepage_khugepaged_gfpmask() :
 		     GFP_TRANSHUGE);
-	int node = hpage_collapse_find_target_node(cc);
+	int node = khugepaged_find_target_node(cc);
 	struct folio *folio;
 
 	folio = __folio_alloc(gfp, HPAGE_PMD_ORDER, node, &cc->alloc_nmask);
@@ -1260,7 +1260,7 @@ static int collapse_huge_page(struct mm_struct *mm, unsigned long address,
 	return result;
 }
 
-static int hpage_collapse_scan_pmd(struct mm_struct *mm,
+static int khugepaged_scan_pmd(struct mm_struct *mm,
 				   struct vm_area_struct *vma,
 				   unsigned long address, bool *mmap_locked,
 				   struct collapse_control *cc)
@@ -1376,7 +1376,7 @@ static int hpage_collapse_scan_pmd(struct mm_struct *mm,
 		 * hit record.
 		 */
 		node = folio_nid(folio);
-		if (hpage_collapse_scan_abort(node, cc)) {
+		if (khugepaged_scan_abort(node, cc)) {
 			result = SCAN_SCAN_ABORT;
 			goto out_unmap;
 		}
@@ -1445,7 +1445,7 @@ static void collect_mm_slot(struct khugepaged_mm_slot *mm_slot)
 
 	lockdep_assert_held(&khugepaged_mm_lock);
 
-	if (hpage_collapse_test_exit(mm)) {
+	if (khugepaged_test_exit(mm)) {
 		/* free mm_slot */
 		hash_del(&slot->hash);
 		list_del(&slot->mm_node);
@@ -1740,7 +1740,7 @@ static void retract_page_tables(struct address_space *mapping, pgoff_t pgoff)
 		if (find_pmd_or_thp_or_none(mm, addr, &pmd) != SCAN_SUCCEED)
 			continue;
 
-		if (hpage_collapse_test_exit(mm))
+		if (khugepaged_test_exit(mm))
 			continue;
 		/*
 		 * When a vma is registered with uffd-wp, we cannot recycle
@@ -2249,7 +2249,7 @@ static int collapse_file(struct mm_struct *mm, unsigned long addr,
 	return result;
 }
 
-static int hpage_collapse_scan_file(struct mm_struct *mm, unsigned long addr,
+static int khugepaged_scan_file(struct mm_struct *mm, unsigned long addr,
 				    struct file *file, pgoff_t start,
 				    struct collapse_control *cc)
 {
@@ -2294,7 +2294,7 @@ static int hpage_collapse_scan_file(struct mm_struct *mm, unsigned long addr,
 		}
 
 		node = folio_nid(folio);
-		if (hpage_collapse_scan_abort(node, cc)) {
+		if (khugepaged_scan_abort(node, cc)) {
 			result = SCAN_SCAN_ABORT;
 			break;
 		}
@@ -2340,7 +2340,7 @@ static int hpage_collapse_scan_file(struct mm_struct *mm, unsigned long addr,
 	return result;
 }
 #else
-static int hpage_collapse_scan_file(struct mm_struct *mm, unsigned long addr,
+static int khugepaged_scan_file(struct mm_struct *mm, unsigned long addr,
 				    struct file *file, pgoff_t start,
 				    struct collapse_control *cc)
 {
@@ -2372,19 +2372,19 @@ static int khugepaged_collapse_single_pmd(unsigned long addr, struct mm_struct *
 
 			mmap_read_unlock(mm);
 			*mmap_locked = false;
-			result = hpage_collapse_scan_file(mm, addr, file, pgoff,
+			result = khugepaged_scan_file(mm, addr, file, pgoff,
 							  cc);
 			fput(file);
 			if (result == SCAN_PTE_MAPPED_HUGEPAGE) {
 				mmap_read_lock(mm);
-				if (hpage_collapse_test_exit_or_disable(mm))
+				if (khugepaged_test_exit_or_disable(mm))
 					goto end;
 				result = collapse_pte_mapped_thp(mm, addr,
 								 !cc->is_khugepaged);
 				mmap_read_unlock(mm);
 			}
 		} else {
-			result = hpage_collapse_scan_pmd(mm, vma, addr,
+			result = khugepaged_scan_pmd(mm, vma, addr,
 							 mmap_locked, cc);
 		}
 		if (result == SCAN_SUCCEED || result == SCAN_PMD_MAPPED)
@@ -2432,7 +2432,7 @@ static unsigned int khugepaged_scan_mm_slot(unsigned int pages, int *result,
 		goto breakouterloop_mmap_lock;
 
 	progress++;
-	if (unlikely(hpage_collapse_test_exit_or_disable(mm)))
+	if (unlikely(khugepaged_test_exit_or_disable(mm)))
 		goto breakouterloop;
 
 	vma_iter_init(&vmi, mm, khugepaged_scan.address);
@@ -2440,7 +2440,7 @@ static unsigned int khugepaged_scan_mm_slot(unsigned int pages, int *result,
 		unsigned long hstart, hend;
 
 		cond_resched();
-		if (unlikely(hpage_collapse_test_exit_or_disable(mm))) {
+		if (unlikely(khugepaged_test_exit_or_disable(mm))) {
 			progress++;
 			break;
 		}
@@ -2462,7 +2462,7 @@ static unsigned int khugepaged_scan_mm_slot(unsigned int pages, int *result,
 			bool mmap_locked = true;
 
 			cond_resched();
-			if (unlikely(hpage_collapse_test_exit_or_disable(mm)))
+			if (unlikely(khugepaged_test_exit_or_disable(mm)))
 				goto breakouterloop;
 
 			VM_BUG_ON(khugepaged_scan.address < hstart ||
@@ -2498,7 +2498,7 @@ static unsigned int khugepaged_scan_mm_slot(unsigned int pages, int *result,
 	 * Release the current mm_slot if this mm is about to die, or
 	 * if we scanned all vmas of this mm.
 	 */
-	if (hpage_collapse_test_exit(mm) || !vma) {
+	if (khugepaged_test_exit(mm) || !vma) {
 		/*
 		 * Make sure that if mm_users is reaching zero while
 		 * khugepaged runs here, khugepaged_exit will find
-- 
2.47.1