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| author |   Omar Sandoval <osandov@fb.com> | 2018-05-09 17:29:24 -0700 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2018-05-10 11:27:52 -0600 |
| commit | 61445b56d031bc12feafb477848cf4ef9a725fc9 (patch) | |
| tree | f4e6aef2571f9566c287342f4fe0fc9fa37c3a61 | |
| parent | kyber-iosched: update shallow depth when setting up hardware queue (diff) | |
| download | linux-dev-61445b56d031bc12feafb477848cf4ef9a725fc9.tar.xz linux-dev-61445b56d031bc12feafb477848cf4ef9a725fc9.zip | |
sbitmap: warn if using smaller shallow depth than was setup
Make sure the user passed the right value to
sbitmap_queue_min_shallow_depth().
Acked-by: Paolo Valente <paolo.valente@linaro.org>
Signed-off-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
| -rw-r--r-- | lib/sbitmap.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/sbitmap.c b/lib/sbitmap.c index d21473b42465..8f0950fbaa5c 100644 --- a/lib/sbitmap.c +++ b/lib/sbitmap.c @@ -402,6 +402,8 @@ int __sbitmap_queue_get_shallow(struct sbitmap_queue *sbq, unsigned int hint, depth; int nr; + WARN_ON_ONCE(shallow_depth < sbq->min_shallow_depth); + hint = this_cpu_read(*sbq->alloc_hint); depth = READ_ONCE(sbq->sb.depth); if (unlikely(hint >= depth)) { |