[PATCH] Allow mem=mmap to also use a file backing

[fio.git] / memory.c

diff --git a/memory.c b/memory.c
index 909baf7d51f19b15f1553679eeb5c7d5f9535e7a..079c0760f0993d22baee775c43561e11d90c7bb1 100644 (file)
--- a/memory.c
+++ b/memory.c
@@ -84,27 +84,29 @@ int allocate_io_mem(struct thread_data *td)
        } else if (td->mem_type == MEM_MMAP || td->mem_type == MEM_MMAPHUGE) {
                int flags = MAP_PRIVATE;
 
-               td->hugefd = 0;
+               td->mmapfd = 0;
 
-               if (td->mem_type == MEM_MMAPHUGE) {
-                       td->hugefd = open(td->hugefile, O_RDWR|O_CREAT, 0644);
+               if (td->mmapfile) {
+                       td->mmapfd = open(td->mmapfile, O_RDWR|O_CREAT, 0644);
 
-                       if (td->hugefd < 0) {
+                       if (td->mmapfd < 0) {
                                td_verror(td, errno);
-                               perror("open huge file");
+                               perror("open mmap file");
                                td->orig_buffer = NULL;
                                return 1;
                        }
                } else
                        flags |= OS_MAP_ANON;
 
-               td->orig_buffer = mmap(NULL, td->orig_buffer_size, PROT_READ | PROT_WRITE, flags, td->hugefd, 0);
+               td->orig_buffer = mmap(NULL, td->orig_buffer_size, PROT_READ | PROT_WRITE, flags, td->mmapfd, 0);
                if (td->orig_buffer == MAP_FAILED) {
                        td_verror(td, errno);
                        perror("mmap");
                        td->orig_buffer = NULL;
-                       if (td->hugefd)
-                               close(td->hugefd);
+                       if (td->mmapfd) {
+                               close(td->mmapfd);
+                               unlink(td->mmapfile);
+                       }
                                
                        return 1;
                }
@@ -124,10 +126,10 @@ void free_io_mem(struct thread_data *td)
                shmctl(td->shm_id, IPC_RMID, &sbuf);
        } else if (td->mem_type == MEM_MMAP || td->mem_type == MEM_MMAPHUGE) {
                munmap(td->orig_buffer, td->orig_buffer_size);
-               if (td->mem_type == MEM_MMAPHUGE) {
-                       close(td->hugefd);
-                       unlink(td->hugefile);
-                       free(td->hugefile);
+               if (td->mmapfile) {
+                       close(td->mmapfd);
+                       unlink(td->mmapfile);
+                       free(td->mmapfile);
                }
        } else
                log_err("Bad memory type %u\n", td->mem_type);