diff mbox series

[v3,01/11] mm/memory-failure: Remove fsdax_pgoff argument from __add_to_kill

Message ID 20240412193510.2356957-2-willy@infradead.org (mailing list archive)
State New
Headers show
Series Some cleanups for memory-failure | expand

Commit Message

Matthew Wilcox April 12, 2024, 7:34 p.m. UTC 
Unify the KSM and DAX codepaths by calculating the addr in
add_to_kill_fsdax() instead of telling __add_to_kill() to calculate it.

Acked-by: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: Jane Chu <jane.chu@oracle.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Reviewed-by: Oscar Salvador <osalvador@suse.de>
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
---
 mm/memory-failure.c | 27 +++++++++------------------
 1 file changed, 9 insertions(+), 18 deletions(-)
diff mbox series

Patch

diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index ee2f4b8905ef..8adf233837bf 100644
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -421,21 +421,13 @@  static unsigned long dev_pagemap_mapping_shift(struct vm_area_struct *vma,
  * not much we can do.	We just print a message and ignore otherwise.
  */
 
-#define FSDAX_INVALID_PGOFF ULONG_MAX
-
 /*
  * Schedule a process for later kill.
  * Uses GFP_ATOMIC allocations to avoid potential recursions in the VM.
- *
- * Note: @fsdax_pgoff is used only when @p is a fsdax page and a
- * filesystem with a memory failure handler has claimed the
- * memory_failure event. In all other cases, page->index and
- * page->mapping are sufficient for mapping the page back to its
- * corresponding user virtual address.
  */
 static void __add_to_kill(struct task_struct *tsk, struct page *p,
 			  struct vm_area_struct *vma, struct list_head *to_kill,
-			  unsigned long ksm_addr, pgoff_t fsdax_pgoff)
+			  unsigned long addr)
 {
 	struct to_kill *tk;
 
@@ -445,12 +437,10 @@  static void __add_to_kill(struct task_struct *tsk, struct page *p,
 		return;
 	}
 
-	tk->addr = ksm_addr ? ksm_addr : page_address_in_vma(p, vma);
-	if (is_zone_device_page(p)) {
-		if (fsdax_pgoff != FSDAX_INVALID_PGOFF)
-			tk->addr = vma_address(vma, fsdax_pgoff, 1);
+	tk->addr = addr ? addr : page_address_in_vma(p, vma);
+	if (is_zone_device_page(p))
 		tk->size_shift = dev_pagemap_mapping_shift(vma, tk->addr);
-	} else
+	else
 		tk->size_shift = page_shift(compound_head(p));
 
 	/*
@@ -480,7 +470,7 @@  static void add_to_kill_anon_file(struct task_struct *tsk, struct page *p,
 				  struct vm_area_struct *vma,
 				  struct list_head *to_kill)
 {
-	__add_to_kill(tsk, p, vma, to_kill, 0, FSDAX_INVALID_PGOFF);
+	__add_to_kill(tsk, p, vma, to_kill, 0);
 }
 
 #ifdef CONFIG_KSM
@@ -498,10 +488,10 @@  static bool task_in_to_kill_list(struct list_head *to_kill,
 }
 void add_to_kill_ksm(struct task_struct *tsk, struct page *p,
 		     struct vm_area_struct *vma, struct list_head *to_kill,
-		     unsigned long ksm_addr)
+		     unsigned long addr)
 {
 	if (!task_in_to_kill_list(to_kill, tsk))
-		__add_to_kill(tsk, p, vma, to_kill, ksm_addr, FSDAX_INVALID_PGOFF);
+		__add_to_kill(tsk, p, vma, to_kill, addr);
 }
 #endif
 /*
@@ -675,7 +665,8 @@  static void add_to_kill_fsdax(struct task_struct *tsk, struct page *p,
 			      struct vm_area_struct *vma,
 			      struct list_head *to_kill, pgoff_t pgoff)
 {
-	__add_to_kill(tsk, p, vma, to_kill, 0, pgoff);
+	unsigned long addr = vma_address(vma, pgoff, 1);
+	__add_to_kill(tsk, p, vma, to_kill, addr);
 }
 
 /*