crimson/os/seastore/rbm: add assert to check if bptr is page-aligned

Signed-off-by: Myoungwon Oh <[email protected]>

Author: myoungwon

src/crimson/os/seastore/random_block_manager/block_rb_manager.cc

@@ -132,6 +132,7 @@ BlockRBManager::write_ertr::future<> BlockRBManager::write(
   bufferptr bptr)
 {
   ceph_assert(device);
+  ceph_assert(bptr.is_page_aligned());
   rbm_abs_addr addr = convert_paddr_to_abs_addr(paddr);
   if (!check_valid_range(addr, bptr)) {
     return crimson::ct_error::erange::make();
@@ -146,6 +147,7 @@ BlockRBManager::read_ertr::future<> BlockRBManager::read(
   bufferptr &bptr)
 {
   ceph_assert(device);
+  ceph_assert(bptr.is_page_aligned());
   rbm_abs_addr addr = convert_paddr_to_abs_addr(paddr);
   if (!check_valid_range(addr, bptr)) {
     return crimson::ct_error::erange::make();

src/test/crimson/seastore/test_randomblock_manager.cc

@@ -107,7 +107,9 @@ struct rbm_test_t :
       std::numeric_limits<char>::max()
     );
     char contents = distribution(generator);
-    return buffer::ptr(buffer::create(blocks * block_size, contents));
+    auto bp = bufferptr(ceph::buffer::create_page_aligned(blocks * block_size));
+    memset(bp.c_str(), contents, bp.length());
+    return bp;
   }
 
   void close() {