This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / fs / gfs2 / util.h

diff --git a/fs/gfs2/util.h b/fs/gfs2/util.h
new file mode 100644 (file)
index 0000000..28938a4
--- /dev/null
+++ b/fs/gfs2/util.h
@@ -0,0 +1,168 @@
+/*
+ * Copyright (C) Sistina Software, Inc.  1997-2003 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
+ * of the GNU General Public License version 2.
+ */
+
+#ifndef __UTIL_DOT_H__
+#define __UTIL_DOT_H__
+
+#include "incore.h"
+
+#define fs_printk(level, fs, fmt, arg...) \
+       printk(level "GFS2: fsid=%s: " fmt , (fs)->sd_fsname , ## arg)
+
+#define fs_info(fs, fmt, arg...) \
+       fs_printk(KERN_INFO , fs , fmt , ## arg)
+
+#define fs_warn(fs, fmt, arg...) \
+       fs_printk(KERN_WARNING , fs , fmt , ## arg)
+
+#define fs_err(fs, fmt, arg...) \
+       fs_printk(KERN_ERR, fs , fmt , ## arg)
+
+
+void gfs2_assert_i(struct gfs2_sbd *sdp);
+
+#define gfs2_assert(sdp, assertion) \
+do { \
+       if (unlikely(!(assertion))) { \
+               gfs2_assert_i(sdp); \
+               BUG(); \
+        } \
+} while (0)
+
+
+int gfs2_assert_withdraw_i(struct gfs2_sbd *sdp, char *assertion,
+                          const char *function, char *file, unsigned int line);
+
+#define gfs2_assert_withdraw(sdp, assertion) \
+((likely(assertion)) ? 0 : gfs2_assert_withdraw_i((sdp), #assertion, \
+                                       __FUNCTION__, __FILE__, __LINE__))
+
+
+int gfs2_assert_warn_i(struct gfs2_sbd *sdp, char *assertion,
+                      const char *function, char *file, unsigned int line);
+
+#define gfs2_assert_warn(sdp, assertion) \
+((likely(assertion)) ? 0 : gfs2_assert_warn_i((sdp), #assertion, \
+                                       __FUNCTION__, __FILE__, __LINE__))
+
+
+int gfs2_consist_i(struct gfs2_sbd *sdp, int cluster_wide,
+                  const char *function, char *file, unsigned int line);
+
+#define gfs2_consist(sdp) \
+gfs2_consist_i((sdp), 0, __FUNCTION__, __FILE__, __LINE__)
+
+
+int gfs2_consist_inode_i(struct gfs2_inode *ip, int cluster_wide,
+                        const char *function, char *file, unsigned int line);
+
+#define gfs2_consist_inode(ip) \
+gfs2_consist_inode_i((ip), 0, __FUNCTION__, __FILE__, __LINE__)
+
+
+int gfs2_consist_rgrpd_i(struct gfs2_rgrpd *rgd, int cluster_wide,
+                        const char *function, char *file, unsigned int line);
+
+#define gfs2_consist_rgrpd(rgd) \
+gfs2_consist_rgrpd_i((rgd), 0, __FUNCTION__, __FILE__, __LINE__)
+
+
+int gfs2_meta_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh,
+                      const char *type, const char *function,
+                      char *file, unsigned int line);
+
+static inline int gfs2_meta_check_i(struct gfs2_sbd *sdp,
+                                   struct buffer_head *bh,
+                                   const char *function,
+                                   char *file, unsigned int line)
+{
+       struct gfs2_meta_header *mh = (struct gfs2_meta_header *)bh->b_data;
+       u32 magic = be32_to_cpu(mh->mh_magic);
+       if (unlikely(magic != GFS2_MAGIC))
+               return gfs2_meta_check_ii(sdp, bh, "magic number", function,
+                                         file, line);
+       return 0;
+}
+
+#define gfs2_meta_check(sdp, bh) \
+gfs2_meta_check_i((sdp), (bh), __FUNCTION__, __FILE__, __LINE__)
+
+
+int gfs2_metatype_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh,
+                          u16 type, u16 t,
+                          const char *function,
+                          char *file, unsigned int line);
+
+static inline int gfs2_metatype_check_i(struct gfs2_sbd *sdp,
+                                       struct buffer_head *bh,
+                                       u16 type,
+                                       const char *function,
+                                       char *file, unsigned int line)
+{
+       struct gfs2_meta_header *mh = (struct gfs2_meta_header *)bh->b_data;
+       u32 magic = be32_to_cpu(mh->mh_magic);
+       u16 t = be32_to_cpu(mh->mh_type);
+       if (unlikely(magic != GFS2_MAGIC))
+               return gfs2_meta_check_ii(sdp, bh, "magic number", function,
+                                         file, line);
+        if (unlikely(t != type))
+               return gfs2_metatype_check_ii(sdp, bh, type, t, function,
+                                             file, line);
+       return 0;
+}
+
+#define gfs2_metatype_check(sdp, bh, type) \
+gfs2_metatype_check_i((sdp), (bh), (type), __FUNCTION__, __FILE__, __LINE__)
+
+static inline void gfs2_metatype_set(struct buffer_head *bh, u16 type,
+                                    u16 format)
+{
+       struct gfs2_meta_header *mh;
+       mh = (struct gfs2_meta_header *)bh->b_data;
+       mh->mh_type = cpu_to_be32(type);
+       mh->mh_format = cpu_to_be32(format);
+}
+
+
+int gfs2_io_error_i(struct gfs2_sbd *sdp, const char *function,
+                   char *file, unsigned int line);
+
+#define gfs2_io_error(sdp) \
+gfs2_io_error_i((sdp), __FUNCTION__, __FILE__, __LINE__);
+
+
+int gfs2_io_error_bh_i(struct gfs2_sbd *sdp, struct buffer_head *bh,
+                      const char *function, char *file, unsigned int line);
+
+#define gfs2_io_error_bh(sdp, bh) \
+gfs2_io_error_bh_i((sdp), (bh), __FUNCTION__, __FILE__, __LINE__);
+
+
+extern struct kmem_cache *gfs2_glock_cachep;
+extern struct kmem_cache *gfs2_inode_cachep;
+extern struct kmem_cache *gfs2_bufdata_cachep;
+
+static inline unsigned int gfs2_tune_get_i(struct gfs2_tune *gt,
+                                          unsigned int *p)
+{
+       unsigned int x;
+       spin_lock(&gt->gt_spin);
+       x = *p;
+       spin_unlock(&gt->gt_spin);
+       return x;
+}
+
+#define gfs2_tune_get(sdp, field) \
+gfs2_tune_get_i(&(sdp)->sd_tune, &(sdp)->sd_tune.field)
+
+void gfs2_icbit_munge(struct gfs2_sbd *sdp, unsigned char **bitmap,
+                     unsigned int bit, int new_value);
+
+#endif /* __UTIL_DOT_H__ */
+