1 files changed, 72 insertions, 0 deletions

diff --git a/storage/xtradb/os/os0file.c b/storage/xtradb/os/os0file.c
index f4a6c33655f..8f1b3e46bb2 100644
--- a/storage/xtradb/os/os0file.c
+++ b/storage/xtradb/os/os0file.c
@@ -1454,6 +1454,43 @@ os_file_set_nocache(
 #endif
 }
 
+
+#ifdef __linux__
+#include <sys/ioctl.h>
+#ifndef DFS_IOCTL_ATOMIC_WRITE_SET 
+#define DFS_IOCTL_ATOMIC_WRITE_SET _IOW(0x95, 2, uint)
+#endif
+static int os_file_set_atomic_writes(os_file_t file, const char *name) 
+{
+	static int first_time = 1;
+	int atomic_option = 1;
+
+	int ret = ioctl (file, DFS_IOCTL_ATOMIC_WRITE_SET, &atomic_option);
+
+	if (ret) {
+		fprintf(stderr, 
+		"InnoDB : can't use atomic write on %s, errno %d\n",
+		name, errno);
+		return ret;
+	}
+	return ret;
+}
+#else 
+static int os_file_set_atomic_writes(os_file_t file, const char *name) 
+{
+	fprintf(stderr,
+	"InnoDB : can't use atomic writes on %s - not implemented on this platform."
+	"innodb_use_atomic_writes needs to be 0.\n", 
+	name);
+#ifdef _WIN32
+	SetLastError(ERROR_INVALID_FUNCTION);
+#else
+	errno = EINVAL;
+#endif
+	return -1;
+}
+#endif
+
 /****************************************************************//**
 NOTE! Use the corresponding macro os_file_create(), not directly
 this function!
@@ -1618,6 +1655,13 @@ try_again:
 		}
 	}
 
+	if (srv_use_atomic_writes && type == OS_DATA_FILE && 
+		os_file_set_atomic_writes(file, name)) {
+			 CloseHandle(file);
+			*success = FALSE;
+			file = INVALID_HANDLE_VALUE;
+	}
+
 	return(file);
 #else /* __WIN__ */
 	os_file_t	file;
@@ -1737,6 +1781,12 @@ try_again:
 		file = -1;
 	}
 #endif /* USE_FILE_LOCK */
+	if (srv_use_atomic_writes && type == OS_DATA_FILE 
+		&& os_file_set_atomic_writes(file, name)) {
+			close(file);
+			*success = FALSE;
+			file = -1;
+	}
 
 	return(file);
 #endif /* __WIN__ */
@@ -2081,6 +2131,28 @@ os_file_set_size(
 	current_size = 0;
 	desired_size = (ib_int64_t)size + (((ib_int64_t)size_high) << 32);
 
+#ifdef HAVE_POSIX_FALLOCATE
+        if (srv_use_posix_fallocate) {
+		if (posix_fallocate(file, current_size, desired_size) == -1) {
+			fprintf(stderr,
+		 	"InnoDB: Error: preallocating data for"
+			" file %s failed at\n"
+			"InnoDB: offset 0 size %lld %lld. Operating system"
+			" error number %llu.\n"
+			"InnoDB: Check that the disk is not full"
+			" or a disk quota exceeded.\n"
+			"InnoDB: Some operating system error numbers"
+			" are described at\n"
+			"InnoDB: "
+			REFMAN "operating-system-error-codes.html\n",
+			name,  (long long)size_high,  (long long)size, errno);
+
+			return (FALSE);
+		}
+		return (TRUE);
+	}
+#endif
+
 	/* Write up to 1 megabyte at a time. */
 	buf_size = ut_min(64, (ulint) (desired_size / UNIV_PAGE_SIZE))
 		* UNIV_PAGE_SIZE;