Line data    Source code

       1              : #ifndef __RGRP_DOT_H__
       2              : #define __RGRP_DOT_H__
       3              : 
       4              : #include "libgfs2.h"
       5              : 
       6              : struct rg_spec {
       7              :         uint32_t len; /* Rgrp length */
       8              :         uint32_t num; /* Number of contiguous rgrps of this length */
       9              : };
      10              : 
      11              : /* Heads a buffer of rg_specs */
      12              : struct rgs_plan {
      13              :         unsigned length; /* # entries */
      14              :         unsigned capacity; /* # entries for which memory has been allocated */
      15              :         struct rg_spec rg_specs[];
      16              : };
      17              : 
      18              : /**
      19              :  * This structure is defined in libgfs2.h as an opaque type. It stores the
      20              :  * constants and context required for creating resource groups from any point
      21              :  * in an application.
      22              :  */
      23              : struct _lgfs2_rgrps {
      24              :         struct osi_root rgs_root;
      25              :         struct rgs_plan *rgs_plan;
      26              :         struct lgfs2_sbd *rgs_sdp;
      27              :         unsigned long rgs_align;
      28              :         unsigned long rgs_align_off;
      29              : };
      30              : 
      31              : struct lgfs2_rbm {
      32              :         lgfs2_rgrp_t rgd;
      33              :         uint32_t offset;    /* The offset is bitmap relative */
      34              :         unsigned bii;       /* Bitmap index */
      35              : };
      36              : 
      37      5090263 : static inline struct lgfs2_bitmap *rbm_bi(const struct lgfs2_rbm *rbm)
      38              : {
      39      5090263 :         return rbm->rgd->rt_bits + rbm->bii;
      40              : }
      41              : 
      42        86664 : static inline uint64_t lgfs2_rbm_to_block(const struct lgfs2_rbm *rbm)
      43              : {
      44        86664 :         return rbm->rgd->rt_data0 + (rbm_bi(rbm)->bi_start * GFS2_NBBY) +
      45        86664 :                 rbm->offset;
      46              : }
      47              : 
      48              : static inline int lgfs2_rbm_eq(const struct lgfs2_rbm *rbm1, const struct lgfs2_rbm *rbm2)
      49              : {
      50              :         return (rbm1->rgd == rbm2->rgd) && (rbm1->bii == rbm2->bii) &&
      51              :                 (rbm1->offset == rbm2->offset);
      52              : }
      53              : 
      54              : extern int lgfs2_rbm_from_block(struct lgfs2_rbm *rbm, uint64_t block);
      55              : extern int lgfs2_rbm_find(struct lgfs2_rbm *rbm, uint8_t state, uint32_t *minext);
      56              : extern unsigned lgfs2_alloc_extent(const struct lgfs2_rbm *rbm, int state, const unsigned elen);
      57              : 
      58              : #endif /* __RGRP_DOT_H__ */