1 files changed, 25 insertions, 3 deletions

diff --git a/fs/xfs/xfs_ialloc.c b/fs/xfs/xfs_ialloc.c
index b5feb3e77116..f943368c9b93 100644
--- a/fs/xfs/xfs_ialloc.c
+++ b/fs/xfs/xfs_ialloc.c
@@ -123,6 +123,7 @@ xfs_ialloc_ag_alloc(
         int             blks_per_cluster;  /* fs blocks per inode cluster */
         xfs_btree_cur_t *cur;           /* inode btree cursor */
         xfs_daddr_t     d;              /* disk addr of buffer */
+        xfs_agnumber_t  agno;
         int             error;
         xfs_buf_t       *fbuf;          /* new free inodes' buffer */
         xfs_dinode_t    *free;          /* new free inode structure */
@@ -302,15 +303,15 @@ xfs_ialloc_ag_alloc(
         }
         be32_add(&agi->agi_count, newlen);
         be32_add(&agi->agi_freecount, newlen);
+        agno = be32_to_cpu(agi->agi_seqno);
         down_read(&args.mp->m_peraglock);
-        args.mp->m_perag[be32_to_cpu(agi->agi_seqno)].pagi_freecount += newlen;
+        args.mp->m_perag[agno].pagi_freecount += newlen;
         up_read(&args.mp->m_peraglock);
         agi->agi_newino = cpu_to_be32(newino);
         /*
          * Insert records describing the new inode chunk into the btree.
          */
-        cur = xfs_btree_init_cursor(args.mp, tp, agbp,
-                        be32_to_cpu(agi->agi_seqno),
+        cur = xfs_btree_init_cursor(args.mp, tp, agbp, agno,
                         XFS_BTNUM_INO, (xfs_inode_t *)0, 0);
         for (thisino = newino;
              thisino < newino + newlen;
@@ -1387,6 +1388,7 @@ xfs_ialloc_read_agi(
         pag = &mp->m_perag[agno];
         if (!pag->pagi_init) {
                 pag->pagi_freecount = be32_to_cpu(agi->agi_freecount);
+                pag->pagi_count = be32_to_cpu(agi->agi_count);
                 pag->pagi_init = 1;
         } else {
                 /*
@@ -1410,3 +1412,23 @@ xfs_ialloc_read_agi(
         *bpp = bp;
         return 0;
 }
+
+/*
+ * Read in the agi to initialise the per-ag data in the mount structure
+ */
+int
+xfs_ialloc_pagi_init(
+        xfs_mount_t     *mp,            /* file system mount structure */
+        xfs_trans_t     *tp,            /* transaction pointer */
+        xfs_agnumber_t  agno)           /* allocation group number */
+{
+        xfs_buf_t       *bp = NULL;
+        int             error;
+
+        error = xfs_ialloc_read_agi(mp, tp, agno, &bp);
+        if (error)
+                return error;
+        if (bp)
+                xfs_trans_brelse(tp, bp);
+        return 0;
+}