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| author | Kent Overstreet <kent.overstreet@gmail.com> | 2016-10-04 08:01:14 -0800 |
|---|---|---|
| committer | Kent Overstreet <kent.overstreet@gmail.com> | 2017-01-18 21:40:32 -0900 |
| commit | 025d6e3b72a7c9fc349c556467e91f86c4b75e20 (patch) | |
| tree | 3b6dea6e7727f641bc07ffae24d24a093ccc94d8 | |
| parent | 8956db0dc6e2ba979b7a9cb55a50dd7a2302f3db (diff) | |
bcache: fix a divide by zero
| -rw-r--r-- | drivers/md/bcache/alloc.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/md/bcache/alloc.c b/drivers/md/bcache/alloc.c index c2964b47d209..ce8b548e252b 100644 --- a/drivers/md/bcache/alloc.c +++ b/drivers/md/bcache/alloc.c @@ -938,6 +938,10 @@ static void recalc_alloc_group_weights(struct cache_set *c, available_buckets += devs->d[i].weight; } + /* avoid divide by zero... */ + if (!available_buckets) + return; + for (i = 0; i < devs->nr_devices; i++) { const unsigned min_weight = U32_MAX >> 4; const unsigned max_weight = U32_MAX; |