On Sat, 2007-06-16 at 12:02 +0400, Dmitriy Monakhov wrote:
> Variable "free" was declarated as __u64 so conidition (free < 0) always
> false, even if free was overflowed during substraction.
Agreed.
Can you add your Signed-off to this patch? I can add mine after yours.
Thanks,
Mingming
> ---
> 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);
-
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