| commit | 554d21efb0d2e102a14f8c4b6bdfbcfbe54b3c65 | [log] [tgz] |
|---|---|---|
| author | Wen Yang <wenyang@linux.alibaba.com> | Mon Jan 20 18:04:43 2020 +0800 |
| committer | Jens Axboe <axboe@kernel.dk> | Wed Jan 22 10:34:11 2020 -0700 |
| tree | 0e784efc85671e7bb4e4668d115bacba43ebf54a | |
| parent | b7f22d993f51c64d79b7fd7ad2c060e3fdc006c0 [diff] |
block, bfq: improve arithmetic division in bfq_delta() do_div() does a 64-by-32 division. Use div64_ul() instead of it if the divisor is unsigned long, to avoid truncation to 32-bit. And as a nice side effect also cleans up the function a bit. Signed-off-by: Wen Yang <wenyang@linux.alibaba.com> Cc: Paolo Valente <paolo.valente@linaro.org> Cc: Jens Axboe <axboe@fb.com> Cc: linux-block@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Jens Axboe <axboe@kernel.dk>