[GFS2] Fix unlinked file handling

[linux-block.git] / fs / gfs2 / glock.h

diff --git a/fs/gfs2/glock.h b/fs/gfs2/glock.h
index 06847ebebdee5ffe869fdf28a397feed35f39f59..fdf58db44ae3dcfd4be89abc002cd41533d44e99 100644 (file)
--- a/fs/gfs2/glock.h
+++ b/fs/gfs2/glock.h
@@ -1,6 +1,6 @@
 /*
  * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
- * Copyright (C) 2004-2005 Red Hat, Inc.  All rights reserved.
+ * Copyright (C) 2004-2006 Red Hat, Inc.  All rights reserved.
  *
  * This copyrighted material is made available to anyone wishing to use,
  * modify, copy, or redistribute it subject to the terms and conditions
@@ -26,7 +26,8 @@
 #define GL_NOCACHE             0x00000400
 #define GL_SYNC                        0x00000800
 #define GL_NOCANCEL            0x00001000
-#define GL_NEVER_RECURSE       0x00002000
+#define GL_AOP                 0x00004000
+#define GL_DUMP                        0x00008000
 
 #define GLR_TRYFAILED          13
 #define GLR_CANCELED           14
@@ -73,41 +74,27 @@ static inline int gfs2_glock_is_blocking(struct gfs2_glock *gl)
        return ret;
 }
 
-struct gfs2_glock *gfs2_glock_find(struct gfs2_sbd *sdp,
-                                  struct lm_lockname *name);
 int gfs2_glock_get(struct gfs2_sbd *sdp,
                   uint64_t number, struct gfs2_glock_operations *glops,
                   int create, struct gfs2_glock **glp);
 void gfs2_glock_hold(struct gfs2_glock *gl);
 int gfs2_glock_put(struct gfs2_glock *gl);
-
-void gfs2_holder_init(struct gfs2_glock *gl, unsigned int state, int flags,
+void gfs2_holder_init(struct gfs2_glock *gl, unsigned int state, unsigned flags,
                      struct gfs2_holder *gh);
-void gfs2_holder_reinit(unsigned int state, int flags, struct gfs2_holder *gh);
+void gfs2_holder_reinit(unsigned int state, unsigned flags,
+                       struct gfs2_holder *gh);
 void gfs2_holder_uninit(struct gfs2_holder *gh);
-struct gfs2_holder *gfs2_holder_get(struct gfs2_glock *gl, unsigned int state,
-                                   int flags, gfp_t gfp_flags);
-void gfs2_holder_put(struct gfs2_holder *gh);
 
 void gfs2_glock_xmote_th(struct gfs2_glock *gl, unsigned int state, int flags);
 void gfs2_glock_drop_th(struct gfs2_glock *gl);
 
-void gfs2_glmutex_lock(struct gfs2_glock *gl);
-int gfs2_glmutex_trylock(struct gfs2_glock *gl);
-void gfs2_glmutex_unlock(struct gfs2_glock *gl);
-
 int gfs2_glock_nq(struct gfs2_holder *gh);
 int gfs2_glock_poll(struct gfs2_holder *gh);
 int gfs2_glock_wait(struct gfs2_holder *gh);
 void gfs2_glock_dq(struct gfs2_holder *gh);
 
-void gfs2_glock_prefetch(struct gfs2_glock *gl, unsigned int state, int flags);
-void gfs2_glock_force_drop(struct gfs2_glock *gl);
-
 int gfs2_glock_be_greedy(struct gfs2_glock *gl, unsigned int time);
 
-int gfs2_glock_nq_init(struct gfs2_glock *gl, unsigned int state, int flags,
-                      struct gfs2_holder *gh);
 void gfs2_glock_dq_uninit(struct gfs2_holder *gh);
 int gfs2_glock_nq_num(struct gfs2_sbd *sdp,
                      uint64_t number, struct gfs2_glock_operations *glops,
@@ -120,16 +107,40 @@ void gfs2_glock_dq_uninit_m(unsigned int num_gh, struct gfs2_holder *ghs);
 void gfs2_glock_prefetch_num(struct gfs2_sbd *sdp, uint64_t number,
                             struct gfs2_glock_operations *glops,
                             unsigned int state, int flags);
+void gfs2_glock_inode_squish(struct inode *inode);
+
+/**
+ * gfs2_glock_nq_init - intialize a holder and enqueue it on a glock
+ * @gl: the glock
+ * @state: the state we're requesting
+ * @flags: the modifier flags
+ * @gh: the holder structure
+ *
+ * Returns: 0, GLR_*, or errno
+ */
+
+static inline int gfs2_glock_nq_init(struct gfs2_glock *gl,
+                                    unsigned int state, int flags,
+                                    struct gfs2_holder *gh)
+{
+       int error;
+
+       gfs2_holder_init(gl, state, flags, gh);
+
+       error = gfs2_glock_nq(gh);
+       if (error)
+               gfs2_holder_uninit(gh);
+
+       return error;
+}
 
 /*  Lock Value Block functions  */
 
 int gfs2_lvb_hold(struct gfs2_glock *gl);
 void gfs2_lvb_unhold(struct gfs2_glock *gl);
-void gfs2_lvb_sync(struct gfs2_glock *gl);
 
 void gfs2_glock_cb(lm_fsdata_t *fsdata, unsigned int type, void *data);
 
-void gfs2_try_toss_inode(struct gfs2_sbd *sdp, struct gfs2_inum *inum);
 void gfs2_iopen_go_callback(struct gfs2_glock *gl, unsigned int state);
 
 void gfs2_glock_schedule_for_reclaim(struct gfs2_glock *gl);
@@ -138,6 +149,4 @@ void gfs2_reclaim_glock(struct gfs2_sbd *sdp);
 void gfs2_scand_internal(struct gfs2_sbd *sdp);
 void gfs2_gl_hash_clear(struct gfs2_sbd *sdp, int wait);
 
-int gfs2_dump_lockstate(struct gfs2_sbd *sdp);
-
 #endif /* __GLOCK_DOT_H__ */