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| author | Mel Gorman <[email protected]> | 2019-02-21 06:19:49 +0000 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2019-02-21 17:01:00 +0000 |
| commit | 94b3334cbebea34d56a7e6321c6fe9d89b309a49 (patch) | |
| tree | 594051108f28d96925d28f169933ade8b23cad9d /tools/perf/scripts/python/export-to-sqlite.py | |
| parent | mm/debug.c: fix __dump_page() for poisoned pages (diff) | |
| download | kernel-94b3334cbebea34d56a7e6321c6fe9d89b309a49.tar.gz kernel-94b3334cbebea34d56a7e6321c6fe9d89b309a49.zip | |
mm, page_alloc: fix a division by zero error when boosting watermarks v2
Yury Norov reported that an arm64 KVM instance could not boot since
after v5.0-rc1 and could addressed by reverting the patches
1c30844d2dfe272d58c ("mm: reclaim small amounts of memory when an external
73444bc4d8f92e46a20 ("mm, page_alloc: do not wake kswapd with zone lock held")
The problem is that a division by zero error is possible if boosting
occurs very early in boot if the system has very little memory. This
patch avoids the division by zero error.
Link: http://lkml.kernel.org/r/[email protected]
Fixes: 1c30844d2dfe ("mm: reclaim small amounts of memory when an external fragmentation event occurs")
Signed-off-by: Mel Gorman <[email protected]>
Reported-by: Yury Norov <[email protected]>
Tested-by: Yury Norov <[email protected]>
Tested-by: Will Deacon <[email protected]>
Acked-by: Vlastimil Babka <[email protected]>
Cc: Andrea Arcangeli <[email protected]>
Cc: David Rientjes <[email protected]>
Cc: Michal Hocko <[email protected]>
Cc: Catalin Marinas <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/export-to-sqlite.py')
0 files changed, 0 insertions, 0 deletions