Re: [PATCH] reiserfs: journal: Increase jl pointer check

[NeilBrown]

On Tue, 25 Oct 2022, Li zeming wrote:
> If kzalloc fails to allocate the jl pointer, NULL is returned directly.
> 
> Signed-off-by: Li zeming <zeming@xxxxxxxxxxxx>
> ---
>  fs/reiserfs/journal.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/fs/reiserfs/journal.c b/fs/reiserfs/journal.c
> index 94addfcefede..d64e9de126c1 100644
> --- a/fs/reiserfs/journal.c
> +++ b/fs/reiserfs/journal.c
> @@ -2569,6 +2569,9 @@ static struct reiserfs_journal_list *alloc_journal_list(struct super_block *s)
>  	struct reiserfs_journal_list *jl;
>  	jl = kzalloc(sizeof(struct reiserfs_journal_list),
>  		     GFP_NOFS | __GFP_NOFAIL);
> +	if (!jl)
> +		return NULL;
> +

What do you think the __GFP_NOFAIL flag might mean?

NeilBrown



>  	INIT_LIST_HEAD(&jl->j_list);
>  	INIT_LIST_HEAD(&jl->j_working_list);
>  	INIT_LIST_HEAD(&jl->j_tail_bh_list);
> -- 
> 2.18.2
> 
>