X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=smalloc.c;h=42008ebfdb6e44732c469b596b7be65786031231;hp=3dd1b4960dd9f15186399432800412fa1c45255d;hb=8489dae4360f2b00d89a6e9603c6167314b1974d;hpb=5e012980ff5f8396a3e3ebc432e1dd32cebedaa1

diff --git a/smalloc.c b/smalloc.c
index 3dd1b496..42008ebf 100644
--- a/smalloc.c
+++ b/smalloc.c
@@ -10,9 +10,11 @@
 #include <unistd.h>
 #include <sys/types.h>
 #include <limits.h>
+#include <fcntl.h>
 
 #include "mutex.h"
 #include "arch/arch.h"
+#include "os/os.h"
 
 #define SMALLOC_REDZONE		/* define to detect memory corruption */
 
@@ -196,10 +198,22 @@ static int add_pool(struct pool *pool, unsigned int alloc_size)
 	bitmap_blocks = alloc_size / SMALLOC_BPL;
 	alloc_size += bitmap_blocks * sizeof(unsigned int);
 	pool->mmap_size = alloc_size;
-	
+
 	pool->nr_blocks = bitmap_blocks;
 	pool->free_blocks = bitmap_blocks * SMALLOC_BPB;
 
+#ifdef FIO_HAVE_FALLOCATE
+	{
+		int ret;
+
+		ret = posix_fallocate(fd, 0, alloc_size);
+		if (ret > 0) {
+			fprintf(stderr, "posix_fallocate pool file failed: %s\n", strerror(ret));
+			goto out_unlink;
+		}
+	}
+#endif
+
 	if (ftruncate(fd, alloc_size) < 0)
 		goto out_unlink;