xfs: Add trace points for per-ag refcount debugging.

[mv-sheeva.git] / fs / xfs / xfs_mount.h

diff --git a/fs/xfs/xfs_mount.h b/fs/xfs/xfs_mount.h
index 1df7e4502967a2623a9e5fa79f9f1556ae55e136..e62fd1cde464df8e3432995a3b9933f4c710be0e 100644 (file)
--- a/fs/xfs/xfs_mount.h
+++ b/fs/xfs/xfs_mount.h
@@ -207,8 +207,8 @@ typedef struct xfs_mount {
        uint                    m_ag_maxlevels; /* XFS_AG_MAXLEVELS */
        uint                    m_bm_maxlevels[2]; /* XFS_BM_MAXLEVELS */
        uint                    m_in_maxlevels; /* max inobt btree levels. */
-       struct xfs_perag        *m_perag;       /* per-ag accounting info */
-       struct rw_semaphore     m_peraglock;    /* lock for m_perag (pointer) */
+       struct radix_tree_root  m_perag_tree;   /* per-ag accounting info */
+       spinlock_t              m_perag_lock;   /* lock for m_perag_tree */
        struct mutex            m_growlock;     /* growfs mutex */
        int                     m_fixedfsid[2]; /* unchanged for life of FS */
        uint                    m_dmevmask;     /* DMI events for this FS */
@@ -384,19 +384,10 @@ xfs_daddr_to_agbno(struct xfs_mount *mp, xfs_daddr_t d)
 }
 
 /*
- * perag get/put wrappers for eventual ref counting
+ * perag get/put wrappers for ref counting
  */
-static inline xfs_perag_t *
-xfs_get_perag(struct xfs_mount *mp, xfs_ino_t ino)
-{
-       return &mp->m_perag[XFS_INO_TO_AGNO(mp, ino)];
-}
-
-static inline void
-xfs_put_perag(struct xfs_mount *mp, xfs_perag_t *pag)
-{
-       /* nothing to see here, move along */
-}
+struct xfs_perag *xfs_perag_get(struct xfs_mount *mp, xfs_agnumber_t agno);
+void   xfs_perag_put(struct xfs_perag *pag);
 
 /*
  * Per-cpu superblock locking functions
@@ -450,7 +441,8 @@ extern struct xfs_dmops xfs_dmcore_xfs;
 #endif /* __KERNEL__ */
 
 extern void    xfs_mod_sb(struct xfs_trans *, __int64_t);
-extern xfs_agnumber_t  xfs_initialize_perag(struct xfs_mount *, xfs_agnumber_t);
+extern int     xfs_initialize_perag(struct xfs_mount *, xfs_agnumber_t,
+                                       xfs_agnumber_t *);
 extern void    xfs_sb_from_disk(struct xfs_sb *, struct xfs_dsb *);
 extern void    xfs_sb_to_disk(struct xfs_dsb *, struct xfs_sb *, __int64_t);