| Message ID | 20241031183757.49610-1-sj@kernel.org (mailing list archive) |
|---|---|
| Headers | show |
| Series | mm/damon/core: fix handling of zero non-sampling intervals | expand |
On Thu, 31 Oct 2024 11:37:55 -0700 SeongJae Park <sj@kernel.org> wrote: > DAMON's internal intervals accounting logic is not correctly handling > non-sampling intervals of zero values for a wrong assumption. This > could cause unexpected monitoring behavior, and even result in infinite > hang of DAMON sysfs interface user threads in case of zero aggregation > interval. Fix those by updating the intervals accounting logic. For > details of the root case and solutions, please refer to commit messages > of fixes. Thanks. fyi, there has been email lossage here. Only [2/2] hit my inbox. Neither [1/2] not [2/2] are in my linux-mm folder. I found the whole series in my linux-kernel folder.
DAMON's internal intervals accounting logic is not correctly handling non-sampling intervals of zero values for a wrong assumption. This could cause unexpected monitoring behavior, and even result in infinite hang of DAMON sysfs interface user threads in case of zero aggregation interval. Fix those by updating the intervals accounting logic. For details of the root case and solutions, please refer to commit messages of fixes. SeongJae Park (2): mm/damon/core: handle zero {aggregation,ops_update} intervals mm/damon/core: handle zero schemes apply interval mm/damon/core.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) base-commit: 0c9ffe1412203c72280f67567bb53200f4de44fb