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| author | Paolo Valente <paolo.valente@linaro.org> | 2020-03-21 10:45:20 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2020-03-21 21:31:02 +0100 |
| commit | 576682fa52cbd95deb3773449566274f206acc58 (patch) | |
| tree | d8c341262fb2476869d09dbe2ec9e340404683e6 /arch | |
| parent | block, bfq: turn put_queue into release_process_ref in __bfq_bic_change_cgroup (diff) | |
| download | linux-576682fa52cbd95deb3773449566274f206acc58.tar.xz linux-576682fa52cbd95deb3773449566274f206acc58.zip | |
block, bfq: make reparent_leaf_entity actually work only on leaf entities
bfq_reparent_leaf_entity() reparents the input leaf entity (a leaf
entity represents just a bfq_queue in an entity tree). Yet, the input
entity is guaranteed to always be a leaf entity only in two-level
entity trees. In this respect, because of the error fixed by
commit 14afc5936197 ("block, bfq: fix overwrite of bfq_group pointer
in bfq_find_set_group()"), all (wrongly collapsed) entity trees happened
to actually have only two levels. After the latter commit, this does not
hold any longer.
This commit fixes this problem by modifying
bfq_reparent_leaf_entity(), so that it searches an active leaf entity
down the path that stems from the input entity. Such a leaf entity is
guaranteed to exist when bfq_reparent_leaf_entity() is invoked.
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 'arch')
0 files changed, 0 insertions, 0 deletions