diff options
Diffstat (limited to 'drivers/staging/lustre/lustre/lov/lov_internal.h')
| -rw-r--r-- | drivers/staging/lustre/lustre/lov/lov_internal.h | 37 |
1 files changed, 32 insertions, 5 deletions
diff --git a/drivers/staging/lustre/lustre/lov/lov_internal.h b/drivers/staging/lustre/lustre/lov/lov_internal.h index 2b22a03c038e..38508a5c827f 100644 --- a/drivers/staging/lustre/lustre/lov/lov_internal.h +++ b/drivers/staging/lustre/lustre/lov/lov_internal.h @@ -38,9 +38,39 @@ #define LOV_INTERNAL_H #include <obd_class.h> -#include <obd_lov.h> #include <lustre/lustre_user.h> +/* lov_do_div64(a, b) returns a % b, and a = a / b. + * The 32-bit code is LOV-specific due to knowing about stripe limits in + * order to reduce the divisor to a 32-bit number. If the divisor is + * already a 32-bit value the compiler handles this directly. */ +#if BITS_PER_LONG == 64 +# define lov_do_div64(n, base) ({ \ + uint64_t __base = (base); \ + uint64_t __rem; \ + __rem = ((uint64_t)(n)) % __base; \ + (n) = ((uint64_t)(n)) / __base; \ + __rem; \ +}) +#elif BITS_PER_LONG == 32 +# define lov_do_div64(n, base) ({ \ + uint64_t __rem; \ + if ((sizeof(base) > 4) && (((base) & 0xffffffff00000000ULL) != 0)) { \ + int __remainder; \ + LASSERTF(!((base) & (LOV_MIN_STRIPE_SIZE - 1)), "64 bit lov " \ + "division %llu / %llu\n", (n), (uint64_t)(base)); \ + __remainder = (n) & (LOV_MIN_STRIPE_SIZE - 1); \ + (n) >>= LOV_MIN_STRIPE_BITS; \ + __rem = do_div(n, (base) >> LOV_MIN_STRIPE_BITS); \ + __rem <<= LOV_MIN_STRIPE_BITS; \ + __rem += __remainder; \ + } else { \ + __rem = do_div(n, base); \ + } \ + __rem; \ +}) +#endif + struct lov_lock_handles { struct portals_handle llh_handle; atomic_t llh_refcount; @@ -251,10 +281,6 @@ int lov_process_config_base(struct obd_device *obd, struct lustre_cfg *lcfg, __u32 *indexp, int *genp); int lov_del_target(struct obd_device *obd, __u32 index, struct obd_uuid *uuidp, int gen); -/* lov_log.c */ -int lov_llog_init(struct obd_device *obd, struct obd_llog_group *olg, - struct obd_device *tgt, int *idx); -int lov_llog_finish(struct obd_device *obd, int count); /* lov_pack.c */ int lov_packmd(struct obd_export *exp, struct lov_mds_md **lmm, @@ -279,6 +305,7 @@ void lov_dump_lmm(int level, void *lmm); /* lov_ea.c */ struct lov_stripe_md *lsm_alloc_plain(__u16 stripe_count, int *size); void lsm_free_plain(struct lov_stripe_md *lsm); +void dump_lsm(unsigned int level, const struct lov_stripe_md *lsm); int lovea_destroy_object(struct lov_obd *lov, struct lov_stripe_md *lsm, struct obdo *oa, void *data); |