ocfs2: Add ac_alloc_slot in ocfs2_alloc_context

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>

3 files changed, 4 insertions, 0 deletions

diff --git a/fs/ocfs2/localalloc.c b/fs/ocfs2/localalloc.c
index ab83fd562429..b6d07198118c 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 3be4e73e8b13..33d55734c514 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 8799033bb459..544c600662bd 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