The patch titled
Subject: mm-handling-non-lru-pages-returned-by-vm_normal_pages-fix
has been added to the -mm mm-unstable branch. Its filename is
mm-handling-non-lru-pages-returned-by-vm_normal_pages-fix.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-handling-non-lru-pages-returned-by-vm_normal_pages-fix.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next via the mm-everything
branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
and is updated there every 2-3 working days
------------------------------------------------------
From: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Subject: mm-handling-non-lru-pages-returned-by-vm_normal_pages-fix
Date: Tue May 31 10:27:42 AM PDT 2022
adjust comment positioning, fix typo
Cc: Alex Sierra <alex.sierra@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/memory.c | 15 ++++++++-------
1 file changed, 8 insertions(+), 7 deletions(-)
--- a/mm/memory.c~mm-handling-non-lru-pages-returned-by-vm_normal_pages-fix
+++ a/mm/memory.c
@@ -623,14 +623,15 @@ struct page *vm_normal_page(struct vm_ar
return NULL;
if (is_zero_pfn(pfn))
return NULL;
+ /*
+ * NOTE: New users of ZONE_DEVICE will not set pte_devmap() and
+ * will have refcounts incremented on their struct pages when
+ * they are inserted into PTEs, thus they are safe to return
+ * here. Legacy ZONE_DEVICE pages that set pte_devmap() do not
+ * have refcounts. Example of legacy ZONE_DEVICE is
+ * MEMORY_DEVICE_FS_DAX type in pmem or virtio_fs drivers.
+ */
if (pte_devmap(pte))
-/*
- * NOTE: New uers of ZONE_DEVICE will not set pte_devmap() and will have
- * refcounts incremented on their struct pages when they are inserted into
- * PTEs, thus they are safe to return here. Legacy ZONE_DEVICE pages that set
- * pte_devmap() do not have refcounts. Example of legacy ZONE_DEVICE is
- * MEMORY_DEVICE_FS_DAX type in pmem or virtio_fs drivers.
- */
return NULL;
print_bad_pte(vma, addr, pte, NULL);
_
Patches currently in -mm which might be from akpm@xxxxxxxxxxxxxxxxxxxx are
mm-page_alloc-remotely-drain-per-cpu-lists-checkpatch-fixes.patch
mm-handling-non-lru-pages-returned-by-vm_normal_pages-fix.patch
linux-next-rejects.patch
linux-next-git-rejects.patch
mm-oom_killc-fix-vm_oom_kill_table-ifdeffery.patch
