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    Subject[PATCH 55/62] ocfs2: Add ac_alloc_slot in ocfs2_alloc_context
    Date
    From: Tao Ma <tao.ma@oracle.com>

    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>
    Signed-off-by: Mark Fasheh <mfasheh@suse.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 ab83fd5..b6d0719 100644
    --- a/fs/ocfs2/localalloc.c
    +++ b/fs/ocfs2/localalloc.c
    @@ -523,6 +523,8 @@ 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
    --
    1.5.4.1


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