LU-3606 fallocate: Implement fallocate preallocate operation

[fs/lustre-release.git] / lustre / include / dt_object.h

diff --git a/lustre/include/dt_object.h b/lustre/include/dt_object.h
index 47e2591..79f6ac3 100644 (file)
--- a/lustre/include/dt_object.h
+++ b/lustre/include/dt_object.h
@@ -1413,6 +1413,39 @@ struct dt_body_operations {
                             __u64 start,
                             __u64 end,
                             enum lu_ladvise_type advice);
+
+       /**
+        * Declare intention to preallocate space for an object
+        *
+        * \param[in] env       execution environment for this thread
+        * \param[in] dt        object
+        * \param[in] th        transaction handle
+        *
+        * \retval 0            on success
+        * \retval negative     negated errno on error
+        */
+       int (*dbo_declare_fallocate)(const struct lu_env *env,
+                                   struct dt_object *dt,
+                                   struct thandle *th);
+       /**
+        * Allocate specified region for an object
+        *
+        * \param[in] env       execution environment for this thread
+        * \param[in] dt        object
+        * \param[in] start     the start of the region to allocate
+        * \param[in] end       the end of the region to allocate
+        * \param[in] mode      fallocate mode
+        * \param[in] th        transaction handle
+        *
+        * \retval 0            on success
+        * \retval negative     negated errno on error
+        */
+       int (*dbo_fallocate)(const struct lu_env *env,
+                           struct dt_object *dt,
+                           __u64 start,
+                           __u64 end,
+                           int mode,
+                           struct thandle *th);
 };
 
 /**
@@ -2518,6 +2551,29 @@ static inline int dt_ladvise(const struct lu_env *env, struct dt_object *dt,
        return dt->do_body_ops->dbo_ladvise(env, dt, start, end, advice);
 }
 
+static inline int dt_declare_falloc(const struct lu_env *env,
+                                     struct dt_object *dt, struct thandle *th)
+{
+       LASSERT(dt);
+       if (!dt->do_body_ops)
+               return -EOPNOTSUPP;
+       LASSERT(dt->do_body_ops);
+       LASSERT(dt->do_body_ops->dbo_declare_fallocate);
+       return dt->do_body_ops->dbo_declare_fallocate(env, dt, th);
+}
+
+static inline int dt_falloc(const struct lu_env *env, struct dt_object *dt,
+                             __u64 start, __u64 end, int mode,
+                             struct thandle *th)
+{
+       LASSERT(dt);
+       if (!dt->do_body_ops)
+               return -EOPNOTSUPP;
+       LASSERT(dt->do_body_ops);
+       LASSERT(dt->do_body_ops->dbo_fallocate);
+       return dt->do_body_ops->dbo_fallocate(env, dt, start, end, mode, th);
+}
+
 static inline int dt_fiemap_get(const struct lu_env *env, struct dt_object *d,
                                struct fiemap *fm)
 {