linux-kernel - [PATCH 0/3] Some cleanups for page isolation

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Message-Id: <cover.1676342827.git.baolin.wang@linux.alibaba.com>
Date:   Tue, 14 Feb 2023 11:18:05 +0800
From:   Baolin Wang <baolin.wang@...ux.alibaba.com>
To:     akpm@...ux-foundation.org
Cc:     torvalds@...ux-foundation.org, sj@...nel.org, hannes@...xchg.org,
        mhocko@...nel.org, roman.gushchin@...ux.dev, shakeelb@...gle.com,
        muchun.song@...ux.dev, baolin.wang@...ux.alibaba.com,
        damon@...ts.linux.dev, cgroups@...r.kernel.org, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 0/3] Some cleanups for page isolation

Hi,

The page isolation functions did not return a boolean to indicate
success or not, instead it will return a negative error when failed
to isolate a page. So it's better to check the negative error explicitly
for isolation to make the code more clear per Linus's suggestion in [1].

No functional changes intended in this patch series.

[1] https://lore.kernel.org/all/CAHk-=wiBrY+O-4=2mrbVyxR+hOqfdJ=Do6xoucfJ9_5az01L4Q@mail.gmail.com/

Baolin Wang (3):
  mm: check negative error of folio_isolate_lru() when failed to isolate
    a folio
  mm: check negative error of isolate_lru_page() when failed to isolate
    a page
  mm: mempolicy: check negative error of isolate_hugetlb() when failed
    to isolate a hugetlb

 mm/damon/paddr.c    | 2 +-
 mm/gup.c            | 2 +-
 mm/khugepaged.c     | 4 ++--
 mm/memcontrol.c     | 2 +-
 mm/mempolicy.c      | 2 +-
 mm/migrate.c        | 4 ++--
 mm/migrate_device.c | 2 +-
 7 files changed, 9 insertions(+), 9 deletions(-)

-- 
2.27.0