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| author | SeongJae Park <sj@kernel.org> | 2026-04-28 07:29:40 +0300 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2026-05-29 07:04:41 +0300 |
| commit | 5a2d162e22bf33eb89d53e802d0fc1ec422e19b6 (patch) | |
| tree | 853d4752b0c267ba13bf855376a1eaf82ac332e1 /include | |
| parent | 214f9ab72ce6e16120c20ad670389656f059e685 (diff) | |
| download | linux-5a2d162e22bf33eb89d53e802d0fc1ec422e19b6.tar.xz | |
mm/damon/core: make charge_addr_from aware of end-address exclusivity
DAMON region end address is exclusive one, but charge_addr_from is
assigned assuming the end address is inclusive. As a result, DAMOS action
to next up to min_region_sz memory can be skipped. This is quite
negligible user impact. But, the bug is a bug that can be very simply
fixed. Fix the wrong assignment to respect the exclusiveness of the
address.
The issue was discovered [1] by Sashiko.
Link: https://lore.kernel.org/20260428042942.118230-1-sj@kernel.org
Link: https://lore.kernel.org/20260428032324.115663-1-sj@kernel.org [1]
Fixes: 50585192bc2e ("mm/damon/schemes: skip already charged targets and regions")
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: <stable@vger.kernel.org> # 5.16.x
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions