[PATCH] configfs: Consolidate locking around configfs_detach_prep() in configfs_rmdir()

[linux-2.6] / fs / xfs / xfs_inode.h

diff --git a/fs/xfs/xfs_inode.h b/fs/xfs/xfs_inode.h
index 571724404355eb8ea0502027a972adedca635af5..1420c49674d7451f196fabbd1df76b731dfc7703 100644 (file)
--- a/fs/xfs/xfs_inode.h
+++ b/fs/xfs/xfs_inode.h
@@ -87,8 +87,7 @@ typedef struct xfs_ifork {
  * Flags for xfs_ichgtime().
  */
 #define        XFS_ICHGTIME_MOD        0x1     /* data fork modification timestamp */
-#define        XFS_ICHGTIME_ACC        0x2     /* data fork access timestamp */
-#define        XFS_ICHGTIME_CHG        0x4     /* inode field change timestamp */
+#define        XFS_ICHGTIME_CHG        0x2     /* inode field change timestamp */
 
 /*
  * Per-fork incore inode flags.
@@ -223,7 +222,7 @@ typedef struct xfs_inode {
        struct xfs_inode_log_item *i_itemp;     /* logging information */
        mrlock_t                i_lock;         /* inode lock */
        mrlock_t                i_iolock;       /* inode IO lock */
-       sema_t                  i_flock;        /* inode flush lock */
+       struct completion       i_flush;        /* inode flush completion q */
        atomic_t                i_pincount;     /* inode pin count */
        wait_queue_head_t       i_ipin_wait;    /* inode pinning wait queue */
        spinlock_t              i_flags_lock;   /* inode i_flags lock */
@@ -482,11 +481,8 @@ int                xfs_ilock_nowait(xfs_inode_t *, uint);
 void           xfs_iunlock(xfs_inode_t *, uint);
 void           xfs_ilock_demote(xfs_inode_t *, uint);
 int            xfs_isilocked(xfs_inode_t *, uint);
-void           xfs_iflock(xfs_inode_t *);
-int            xfs_iflock_nowait(xfs_inode_t *);
 uint           xfs_ilock_map_shared(xfs_inode_t *);
 void           xfs_iunlock_map_shared(xfs_inode_t *, uint);
-void           xfs_ifunlock(xfs_inode_t *);
 void           xfs_ireclaim(xfs_inode_t *);
 int            xfs_finish_reclaim(xfs_inode_t *, int, int);
 int            xfs_finish_reclaim_all(struct xfs_mount *, int);
@@ -580,6 +576,26 @@ extern struct kmem_zone    *xfs_ifork_zone;
 extern struct kmem_zone        *xfs_inode_zone;
 extern struct kmem_zone        *xfs_ili_zone;
 
+/*
+ * Manage the i_flush queue embedded in the inode.  This completion
+ * queue synchronizes processes attempting to flush the in-core
+ * inode back to disk.
+ */
+static inline void xfs_iflock(xfs_inode_t *ip)
+{
+       wait_for_completion(&ip->i_flush);
+}
+
+static inline int xfs_iflock_nowait(xfs_inode_t *ip)
+{
+       return try_wait_for_completion(&ip->i_flush);
+}
+
+static inline void xfs_ifunlock(xfs_inode_t *ip)
+{
+       complete(&ip->i_flush);
+}
+
 #endif /* __KERNEL__ */
 
 #endif /* __XFS_INODE_H__ */