diff options
| author | Zi Yan <ziy@nvidia.com> | 2022-05-26 19:15:30 -0400 |
|---|---|---|
| committer | akpm <akpm@linux-foundation.org> | 2022-05-27 09:33:42 -0700 |
| commit | 9b209e557d698f24317d2619d8628b98b6728e4f (patch) | |
| tree | 22147bc373ba47fda550097bbc3e4b0cdfe31f84 /mm/page_alloc.c | |
| parent | f403f22f8ccb12860b2b62fec3173c6ccd45938b (diff) | |
| download | linux-9b209e557d698f24317d2619d8628b98b6728e4f.tar.bz2 | |
mm: page-isolation: skip isolated pageblock in start_isolate_page_range()
start_isolate_page_range() first isolates the first and the last
pageblocks in the range and ensure pages across range boundaries are split
during isolation. But it missed the case when the range is <= a pageblock
and the first and the last pageblocks are the same one, so the second
isolate_single_pageblock() will always fail. To fix it, skip the
pageblock isolation in second isolate_single_pageblock().
Link: https://lkml.kernel.org/r/20220526231531.2404977-1-zi.yan@sent.com
Fixes: 88ee134320b8 ("mm: fix a potential infinite loop in start_isolate_page_range()")
Signed-off-by: Zi Yan <ziy@nvidia.com>
Reported-by: Marek Szyprowski <m.szyprowski@samsung.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Link: https://lore.kernel.org/linux-mm/ac65adc0-a7e4-cdfe-a0d8-757195b86293@samsung.com/
Reported-by: Michael Walle <michael@walle.cc>
Tested-by: Michael Walle <michael@walle.cc>
Link: https://lore.kernel.org/linux-mm/8ca048ca8b547e0dd1c95387ee05c23d@walle.cc/
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: David Hildenbrand <david@redhat.com>
Cc: Doug Berger <opendmb@gmail.com>
Cc: Eric Ren <renzhengeek@gmail.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Qian Cai <quic_qiancai@quicinc.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/page_alloc.c')
0 files changed, 0 insertions, 0 deletions