[GFS2] The core of GFS2

This patch contains all the core files for GFS2.

Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>

1 files changed, 180 insertions, 0 deletions

diff --git a/fs/gfs2/util.h b/fs/gfs2/util.h
new file mode 100644
index 000000000000..21466fe9bf43
--- /dev/null
+++ b/fs/gfs2/util.h
@@ -0,0 +1,180 @@
+/*
+ * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
+ * Copyright (C) 2004-2005 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 v.2.
+ */
+
+#ifndef __UTIL_DOT_H__
+#define __UTIL_DOT_H__
+
+uint32_t gfs2_disk_hash(const char *data, int len);
+
+
+#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;
+        uint32_t magic = mh->mh_magic;
+        magic = be32_to_cpu(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,
+                           uint16_t type, uint16_t t,
+                           const char *function,
+                           char *file, unsigned int line);
+
+static inline int gfs2_metatype_check_i(struct gfs2_sbd *sdp,
+                                        struct buffer_head *bh,
+                                        uint16_t type,
+                                        const char *function,
+                                        char *file, unsigned int line)
+{
+        struct gfs2_meta_header *mh = (struct gfs2_meta_header *)bh->b_data;
+        uint32_t magic = mh->mh_magic;
+        uint16_t t = mh->mh_type;
+        magic = be32_to_cpu(magic);
+        if (unlikely(magic != GFS2_MAGIC))
+                return gfs2_meta_check_ii(sdp, bh, "magic number", function,
+                                          file, line);
+        t = be16_to_cpu(t);
+        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, uint16_t type,
+                                     uint16_t format)
+{
+        struct gfs2_meta_header *mh;
+        mh = (struct gfs2_meta_header *)bh->b_data;
+        mh->mh_type = cpu_to_be16(type);
+        mh->mh_format = cpu_to_be16(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 kmem_cache_t *gfs2_glock_cachep;
+extern kmem_cache_t *gfs2_inode_cachep;
+extern kmem_cache_t *gfs2_bufdata_cachep;
+
+struct gfs2_user_buffer {
+        char __user *ub_data;
+        unsigned int ub_size;
+        unsigned int ub_count;
+};
+
+int gfs2_add_bh_to_ub(struct gfs2_user_buffer *ub, struct buffer_head *bh);
+
+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__ */
+