From: Anshuman Khandual <anshuman.khandual@xxxxxxx>
Subject: mm/debug_vm_pgtable: update comments regarding migration swap entries
The commit 4dd845b5a3e5 ("mm/swapops: rework swap entry manipulation code")
had changed migtation entry related helpers. Just update debug_vm_pgatble()
synced documentation to reflect those changes.
Link: https://lkml.kernel.org/r/1641880417-24848-1-git-send-email-anshuman.khandual@xxxxxxx
Signed-off-by: Anshuman Khandual <anshuman.khandual@xxxxxxx>
Cc: Jonathan Corbet <corbet@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
Documentation/vm/arch_pgtable_helpers.rst | 14 +++++++-------
mm/debug_vm_pgtable.c | 4 ++--
2 files changed, 9 insertions(+), 9 deletions(-)
--- a/Documentation/vm/arch_pgtable_helpers.rst~mm-debug_vm_pgtable-update-comments-regarding-migration-swap-entries
+++ a/Documentation/vm/arch_pgtable_helpers.rst
@@ -247,12 +247,12 @@ SWAP Page Table Helpers
| __swp_to_pmd_entry | Creates a mapped PMD from a swapped entry (arch) |
+---------------------------+--------------------------------------------------+
| is_migration_entry | Tests a migration (read or write) swapped entry |
-+---------------------------+--------------------------------------------------+
-| is_write_migration_entry | Tests a write migration swapped entry |
-+---------------------------+--------------------------------------------------+
-| make_migration_entry_read | Converts into read migration swapped entry |
-+---------------------------+--------------------------------------------------+
-| make_migration_entry | Creates a migration swapped entry (read or write)|
-+---------------------------+--------------------------------------------------+
++-------------------------------+----------------------------------------------+
+| is_writable_migration_entry | Tests a write migration swapped entry |
++-------------------------------+----------------------------------------------+
+| make_readable_migration_entry | Creates a read migration swapped entry |
++-------------------------------+----------------------------------------------+
+| make_writable_migration_entry | Creates a write migration swapped entry |
++-------------------------------+----------------------------------------------+
[1] https://lore.kernel.org/linux-mm/20181017020930.GN30832@xxxxxxxxxx/
--- a/mm/debug_vm_pgtable.c~mm-debug_vm_pgtable-update-comments-regarding-migration-swap-entries
+++ a/mm/debug_vm_pgtable.c
@@ -888,8 +888,8 @@ static void __init swap_migration_tests(
pr_debug("Validating swap migration\n");
/*
- * make_migration_entry() expects given page to be
- * locked, otherwise it stumbles upon a BUG_ON().
+ * make_[readable|writable]_migration_entry() expects given page to
+ * be locked, otherwise it stumbles upon a BUG_ON().
*/
__SetPageLocked(page);
swp = make_writable_migration_entry(page_to_pfn(page));
_
