Variable "free" was declarated as __u64 so conidition (free < 0) always
false, even if free was overflowed during substraction.
---
fs/ext4/balloc.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/fs/ext4/balloc.c b/fs/ext4/balloc.c
index 43ae8f8..a9655f1 100644
--- a/fs/ext4/balloc.c
+++ b/fs/ext4/balloc.c
@@ -1909,8 +1909,8 @@ void ext4_rebalance_reservation(struct ext4_reservation_slot *rs, __u64 free)
chunk = free;
if (rs[i].rs_reserved || i == smp_processor_id()) {
rs[i].rs_reserved = chunk;
+ BUG_ON(free < chunk);
free -= chunk;
- BUG_ON(free < 0);
}
}
BUG_ON(free);
--
1.5.2
-
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