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| author | Liang Chen <liangchen.linux@gmail.com> | 2017-10-13 16:35:40 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2017-10-16 09:07:26 -0600 |
| commit | 6446c684f9418d0175c9c3e5134e7744fe79181a (patch) | |
| tree | 0ecab99341033e1f332c05eddd6d0abbb17e19a7 /tools/perf/scripts/python | |
| parent | bcache: rearrange writeback main thread ratelimit (diff) | |
| download | linux-6446c684f9418d0175c9c3e5134e7744fe79181a.tar.gz linux-6446c684f9418d0175c9c3e5134e7744fe79181a.zip | |
bcache: safeguard a dangerous addressing in closure_queue
The use of the union reduces the size of closure struct by taking advantage
of the current size of its members. The offset of func in work_struct
equals the size of the first three members, so that work.work_func will
just reference the forth member - fn.
This is smart but dangerous. It can be broken if work_struct or the other
structs get changed, and can be a bit difficult to debug.
Signed-off-by: Liang Chen <liangchen.linux@gmail.com>
Reviewed-by: Michael Lyle <mlyle@lyle.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions