[Ocfs2-devel] [PATCH 2/3] Add ac_alloc_slot
in ocfs2_alloc_context.V3
Sunil Mushran
Sunil.Mushran at oracle.com
Mon Mar 3 18:25:34 PST 2008
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 at oracle.com>
>
Signed-off-by: Sunil Mushran <sunil.mushran at 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
>
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