Messages in this thread | | | From | Haiyue Wang <> | Subject | [PATCH v6 0/2] fix follow_page related issues | Date | Tue, 16 Aug 2022 10:20:59 +0800 |
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v6: Simplify the multiple layers of conditionals for if {}
- if (page) { - err = !is_zone_device_page(page) ? page_to_nid(page) - : -ENOENT; - if (foll_flags & FOLL_GET) - put_page(page); - } else { - err = -ENOENT; - } + err = -ENOENT; + if (!page) + goto set_status; + + if (!is_zone_device_page(page)) + err = page_to_nid(page); + + if (foll_flags & FOLL_GET) + put_page(page);
v5: reword the commit message for FOLL_GET with more information.
v4: add '()' for the function for readability. add more words about the Non-LRU pages fix in commit message.
v3: Merge the fix for handling Non-LRU pages into one patch. Drop the break_ksm zone device page check.
v2: Add the Non-LRU pages fix with two patches, so that 'mm: migration: fix the FOLL_GET' can be applied directly on linux-5.19 stable branch.
Haiyue Wang (2): mm: migration: fix the FOLL_GET failure on following huge page mm: fix the handling Non-LRU pages returned by follow_page
mm/huge_memory.c | 4 ++-- mm/ksm.c | 12 +++++++++--- mm/migrate.c | 23 +++++++++++++++++------ 3 files changed, 28 insertions(+), 11 deletions(-)
-- 2.37.2
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