diff options
| author | Paolo Valente | 2020-03-21 10:45:18 +0100 |
|---|---|---|
| committer | Jens Axboe | 2020-03-21 14:30:58 -0600 |
| commit | fd1bb3ae54a9a2e0c42709de861c69aa146b8955 (patch) | |
| tree | 865016ef8439e74c8e2e427ce471adc140950968 /block/blk-merge.c | |
| parent | 2f95fa5c955d0a9987ffdc3a095e2f4e62c5f2a9 (diff) | |
block, bfq: move forward the getting of an extra ref in bfq_bfqq_move
Commit ecedd3d7e199 ("block, bfq: get extra ref to prevent a queue
from being freed during a group move") gets an extra reference to a
bfq_queue before possibly deactivating it (temporarily), in
bfq_bfqq_move(). This prevents the bfq_queue from disappearing before
being reactivated in its new group.
Yet, the bfq_queue may also be expired (i.e., its service may be
stopped) before the bfq_queue is deactivated. And also an expiration
may lead to a premature freeing. This commit fixes this issue by
simply moving forward the getting of the extra reference already
introduced by commit ecedd3d7e199 ("block, bfq: get extra ref to
prevent a queue from being freed during a group move").
Reported-by: cki-project@redhat.com
Tested-by: cki-project@redhat.com
Signed-off-by: Paolo Valente <paolo.valente@linaro.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-merge.c')
0 files changed, 0 insertions, 0 deletions