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     5024594 : static inline struct lgfs2_bitmap *rbm_bi(const struct lgfs2_rbm *rbm)
      38             : {
      39     5024594 :         return rbm->rgd->rt_bits + rbm->bii;
      40             : }
      41             : 
      42       86662 : static inline uint64_t lgfs2_rbm_to_block(const struct lgfs2_rbm *rbm)
      43             : {
      44       86662 :         return rbm->rgd->rt_data0 + (rbm_bi(rbm)->bi_start * GFS2_NBBY) +
      45       86662 :                 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__ */