X-Git-Url: https://git.kernel.dk/?a=blobdiff_plain;ds=sidebyside;f=memory.c;h=8d6f95579a3366cb633226237965c5de971243e4;hb=a05bd42ddbe73c726d062829c3295e7e315ee653;hp=be664c9c22a40285cd07c6f7f69da120408618d7;hpb=6b56baf5c8c544194e82a45999391de155cd94a3;p=fio.git

diff --git a/memory.c b/memory.c
index be664c9c..8d6f9557 100644
--- a/memory.c
+++ b/memory.c
@@ -72,6 +72,8 @@ int allocate_io_mem(struct thread_data *td)
 			td_verror(td, errno, "shmget");
 			if (geteuid() != 0 && errno == ENOMEM)
 				log_err("fio: you may need to run this job as root\n");
+			if (errno == EINVAL && td->o.mem_type == MEM_SHMHUGE)
+				log_err("fio: check that you have free huge pages and that hugepage-size is correct.\n");
 			
 			return 1;
 		}
@@ -96,6 +98,11 @@ int allocate_io_mem(struct thread_data *td)
 				td->orig_buffer = NULL;
 				return 1;
 			}
+			if (ftruncate(td->mmapfd, td->orig_buffer_size) < 0) {
+				td_verror(td, errno, "truncate mmap file");
+				td->orig_buffer = NULL;
+				return 1;
+			}
 		} else
 			flags |= OS_MAP_ANON;