fs/gfs2/incore.h

101 struct gfs2_rgrpd {  struct
102 	struct rb_node rd_node;		/* Link with superblock */
103 	struct gfs2_glock *rd_gl;	/* Glock for this rgrp */
104 	u64 rd_addr;			/* grp block disk address */
105 	u64 rd_data0;			/* first data location */
106 	u32 rd_length;			/* length of rgrp header in fs blocks */
107 	u32 rd_data;			/* num of data blocks in rgrp */
108 	u32 rd_bitbytes;		/* number of bytes in data bitmaps */
109 	u32 rd_free;
110 	u32 rd_requested;		/* number of blocks in rd_rstree */
111 	u32 rd_reserved;		/* number of reserved blocks */
112 	u32 rd_free_clone;
113 	u32 rd_dinodes;
114 	u64 rd_igeneration;
115 	struct gfs2_bitmap *rd_bits;
116 	struct gfs2_sbd *rd_sbd;
117 	struct gfs2_rgrp_lvb *rd_rgl;
118 	u32 rd_last_alloc;
119 	u32 rd_flags;
120 	u32 rd_extfail_pt;		/* extent failure point */
125 	spinlock_t rd_rsspin;           /* protects reservation related vars */
126 	struct mutex rd_mutex;
127 	struct rb_root rd_rstree;       /* multi-block reservation tree */