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@xxxxxxxxxxxxxx/ 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
