[Ocfs2-devel] [PATCH 2/3] Add ac_alloc_slot in ocfs2_alloc_context.V3

[Sunil Mushran <Sunil.Mushran@oracle.com>]

Tao Ma wrote:
> In inode stealing, we no longer restrict the allocation to
> happen in the local node. So it is neccessary for us to add
> a new member in ocfs2_alloc_context to indicate which slot
> we are using for allocation. We also modify the process of
> local alloc so that this member can be used there also.
>
> Signed-off-by: Tao Ma <tao.ma@oracle.com>
>   

Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>

> ---
>  fs/ocfs2/localalloc.c |    2 ++
>  fs/ocfs2/suballoc.c   |    1 +
>  fs/ocfs2/suballoc.h   |    1 +
>  3 files changed, 4 insertions(+), 0 deletions(-)
>
> diff --git a/fs/ocfs2/localalloc.c b/fs/ocfs2/localalloc.c
> index add1ffd..80d1c75 100644
> --- a/fs/ocfs2/localalloc.c
> +++ b/fs/ocfs2/localalloc.c
> @@ -526,6 +526,8 @@ int ocfs2_reserve_local_alloc_bits(struct ocfs2_super *osb,
>  	}
>  
>  	ac->ac_inode = local_alloc_inode;
> +	/* We should never use localalloc from another slot */
> +	ac->ac_alloc_slot = osb->slot_num;
>  	ac->ac_which = OCFS2_AC_USE_LOCAL;
>  	get_bh(osb->local_alloc_bh);
>  	ac->ac_bh = osb->local_alloc_bh;
> diff --git a/fs/ocfs2/suballoc.c b/fs/ocfs2/suballoc.c
> index 3be4e73..33d5573 100644
> --- a/fs/ocfs2/suballoc.c
> +++ b/fs/ocfs2/suballoc.c
> @@ -424,6 +424,7 @@ static int ocfs2_reserve_suballoc_bits(struct ocfs2_super *osb,
>  	}
>  
>  	ac->ac_inode = alloc_inode;
> +	ac->ac_alloc_slot = slot;
>  
>  	fe = (struct ocfs2_dinode *) bh->b_data;
>  	if (!OCFS2_IS_VALID_DINODE(fe)) {
> diff --git a/fs/ocfs2/suballoc.h b/fs/ocfs2/suballoc.h
> index 8799033..544c600 100644
> --- a/fs/ocfs2/suballoc.h
> +++ b/fs/ocfs2/suballoc.h
> @@ -36,6 +36,7 @@ typedef int (group_search_t)(struct inode *,
>  struct ocfs2_alloc_context {
>  	struct inode *ac_inode;    /* which bitmap are we allocating from? */
>  	struct buffer_head *ac_bh; /* file entry bh */
> +	u32    ac_alloc_slot;   /* which slot are we allocating from? */
>  	u32    ac_bits_wanted;
>  	u32    ac_bits_given;
>  #define OCFS2_AC_USE_LOCAL 1
>