LU-2675 obdclass: remove uses of lov_stripe_md

[fs/lustre-release.git] / lustre / lov / lov_internal.h

diff --git a/lustre/lov/lov_internal.h b/lustre/lov/lov_internal.h
index 3b0acf3..6a01148 100644 (file)
--- a/lustre/lov/lov_internal.h
+++ b/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
+
 #define pool_tgt_size(p) ((p)->pool_obds.op_size)
 #define pool_tgt_count(p) ((p)->pool_obds.op_count)
 #define pool_tgt_array(p) ((p)->pool_obds.op_array)
@@ -184,6 +214,7 @@ 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);
 
 /* lproc_lov.c */
 extern struct file_operations lov_proc_target_fops;