From: Yang Shi <shy828301@gmail.com>
To: vbabka@suse.cz, kirill.shutemov@linux.intel.com,
linmiaohe@huawei.com, songliubraving@fb.com, riel@surriel.com,
willy@infradead.org, ziy@nvidia.com, tytso@mit.edu,
akpm@linux-foundation.org
Cc: shy828301@gmail.com, linux-mm@kvack.org,
linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [v4 PATCH 1/8] sched: coredump.h: clarify the use of MMF_VM_HUGEPAGE
Date: Tue, 10 May 2022 13:32:15 -0700 [thread overview]
Message-ID: <20220510203222.24246-2-shy828301@gmail.com> (raw)
In-Reply-To: <20220510203222.24246-1-shy828301@gmail.com>
MMF_VM_HUGEPAGE is set as long as the mm is available for khugepaged by
khugepaged_enter(), not only when VM_HUGEPAGE is set on vma. Correct
the comment to avoid confusion.
Reviewed-by: Miaohe Lin <linmiaohe@huawei.com>
Acked-by: Song Liu <song@kernel.org>
Acked-by: Vlastmil Babka <vbabka@suse.cz>
Signed-off-by: Yang Shi <shy828301@gmail.com>
---
include/linux/sched/coredump.h | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/include/linux/sched/coredump.h b/include/linux/sched/coredump.h
index 4d9e3a656875..4d0a5be28b70 100644
--- a/include/linux/sched/coredump.h
+++ b/include/linux/sched/coredump.h
@@ -57,7 +57,8 @@ static inline int get_dumpable(struct mm_struct *mm)
#endif
/* leave room for more dump flags */
#define MMF_VM_MERGEABLE 16 /* KSM may merge identical pages */
-#define MMF_VM_HUGEPAGE 17 /* set when VM_HUGEPAGE is set on vma */
+#define MMF_VM_HUGEPAGE 17 /* set when mm is available for
+ khugepaged */
/*
* This one-shot flag is dropped due to necessity of changing exe once again
* on NFS restore
--
2.26.3
next prev parent reply other threads:[~2022-05-10 20:32 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-10 20:32 [mm-unstable v4 PATCH 0/8] Make khugepaged collapse readonly FS THP more consistent Yang Shi
2022-05-10 20:32 ` Yang Shi [this message]
2022-05-10 20:32 ` [v4 PATCH 2/8] mm: khugepaged: remove redundant check for VM_NO_KHUGEPAGED Yang Shi
2022-05-10 20:32 ` [v4 PATCH 3/8] mm: khugepaged: skip DAX vma Yang Shi
2022-05-10 20:32 ` [v4 PATCH 4/8] mm: thp: only regular file could be THP eligible Yang Shi
2022-05-10 20:32 ` [v4 PATCH 5/8] mm: khugepaged: make khugepaged_enter() void function Yang Shi
2022-05-10 20:32 ` [v4 PATCH 6/8] mm: khugepaged: make hugepage_vma_check() non-static Yang Shi
2022-05-10 21:05 ` Andrew Morton
2022-05-10 22:35 ` Yang Shi
2022-05-10 20:32 ` [v4 PATCH 7/8] mm: khugepaged: introduce khugepaged_enter_vma() helper Yang Shi
2022-05-10 20:32 ` [v4 PATCH 8/8] mm: mmap: register suitable readonly file vmas for khugepaged Yang Shi
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