Hi Jaegeuk,
On 12/05/2014 08:49 AM, Jaegeuk Kim wrote:
> This patch fixes missing kmem_cache_free when handling errors.
>
> Signed-off-by: Jaegeuk Kim <jaegeuk@xxxxxxxxxx>
> ---
> fs/f2fs/node.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
> index b1466cf..c59341d 100644
> --- a/fs/f2fs/node.c
> +++ b/fs/f2fs/node.c
> @@ -158,7 +158,7 @@ retry:
> head->entry_cnt = 0;
>
> if (radix_tree_insert(&nm_i->nat_set_root, set, head)) {
> - cond_resched();
> + kmem_cache_free(nat_entry_set_slab, head);
Why not reuse the allocated entry?
This routine is under nat_tree_lock, so the free_old->research->alloc_new
is needless, because no other ones can race with us.
> goto retry;
And radix_tree_insert can only fail -ENOMEM here, IMO, the in-time retry step
makes very little sense here. How about retaining the "cond_resched()" and retry
insert later?
If I misread something, please correct me.:)
Thanks,
Gu
> }
> }
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