diff --git a/fs/Makefile b/fs/Makefile
index b6f27dc26b7254a25c4dbf5223a2d24ce67f46d4..d0c69f57e5bfdebd65a668443428c44373360ab0 100644
--- a/fs/Makefile
+++ b/fs/Makefile
@@ -8,7 +8,7 @@
 obj-y :=	open.o read_write.o file_table.o super.o \
 		char_dev.o stat.o exec.o pipe.o namei.o fcntl.o \
 		ioctl.o readdir.o select.o fifo.o dcache.o inode.o \
-		attr.o bad_inode.o file.o filesystems.o namespace.o aio.o \
+		attr.o bad_inode.o file.o filesystems.o namespace.o \
 		seq_file.o xattr.o libfs.o fs-writeback.o \
 		pnode.o drop_caches.o splice.o sync.o utimes.o \
 		stack.o
@@ -27,6 +27,7 @@ obj-$(CONFIG_ANON_INODES)	+= anon_inodes.o
 obj-$(CONFIG_SIGNALFD)		+= signalfd.o
 obj-$(CONFIG_TIMERFD)		+= timerfd.o
 obj-$(CONFIG_EVENTFD)		+= eventfd.o
+obj-$(CONFIG_AIO)               += aio.o
 obj-$(CONFIG_FILE_LOCKING)      += locks.o
 obj-$(CONFIG_COMPAT)		+= compat.o compat_ioctl.o
 
diff --git a/include/linux/aio.h b/include/linux/aio.h
index 09b276c35227f43ef120d3e729dc0d27f68e303e..f6b8cf99b596a30820215766fb7e680dedf7e6e1 100644
--- a/include/linux/aio.h
+++ b/include/linux/aio.h
@@ -204,12 +204,21 @@ struct kioctx {
 /* prototypes */
 extern unsigned aio_max_size;
 
+#ifdef CONFIG_AIO
 extern ssize_t wait_on_sync_kiocb(struct kiocb *iocb);
 extern int aio_put_req(struct kiocb *iocb);
 extern void kick_iocb(struct kiocb *iocb);
 extern int aio_complete(struct kiocb *iocb, long res, long res2);
 struct mm_struct;
 extern void exit_aio(struct mm_struct *mm);
+#else
+static inline ssize_t wait_on_sync_kiocb(struct kiocb *iocb) { return 0; }
+static inline int aio_put_req(struct kiocb *iocb) { return 0; }
+static inline void kick_iocb(struct kiocb *iocb) { }
+static inline int aio_complete(struct kiocb *iocb, long res, long res2) { return 0; }
+struct mm_struct;
+static inline void exit_aio(struct mm_struct *mm) { }
+#endif /* CONFIG_AIO */
 
 #define io_wait_to_kiocb(wait) container_of(wait, struct kiocb, ki_wait)
 
diff --git a/init/Kconfig b/init/Kconfig
index 8a8e2d00c40e1f73a6dafe6c114057014ec15138..5ceff3249a2d84cd23110b99fb3f8a076e8cf56c 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -713,6 +713,14 @@ config SHMEM
 	  option replaces shmem and tmpfs with the much simpler ramfs code,
 	  which may be appropriate on small systems without swap.
 
+config AIO
+	bool "Enable AIO support" if EMBEDDED
+	default y
+	help
+	  This option enables POSIX asynchronous I/O which may by used
+          by some high performance threaded applications. Disabling
+          this option saves about 7k.
+
 config VM_EVENT_COUNTERS
 	default y
 	bool "Enable VM event counters for /proc/vmstat" if EMBEDDED
diff --git a/kernel/sys_ni.c b/kernel/sys_ni.c
index 503d8d4eb80acb5bc272e6dcb2be7d403955dab3..a77b27b11b048fee528e0628798f9fe8774ebbf9 100644
--- a/kernel/sys_ni.c
+++ b/kernel/sys_ni.c
@@ -126,6 +126,11 @@ cond_syscall(sys_vm86);
 cond_syscall(compat_sys_ipc);
 cond_syscall(compat_sys_sysctl);
 cond_syscall(sys_flock);
+cond_syscall(sys_io_setup);
+cond_syscall(sys_io_destroy);
+cond_syscall(sys_io_submit);
+cond_syscall(sys_io_cancel);
+cond_syscall(sys_io_getevents);
 
 /* arch-specific weak syscall entries */
 cond_syscall(sys_pciconfig_read);
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 9792c315676afab76e7896dab7dead7d21a900a2..617d41e4d6a08eae69152515e1ac47a9c8a3fc85 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -1281,6 +1281,7 @@ static struct ctl_table fs_table[] = {
 		.extra2		= &two,
 	},
 #endif
+#ifdef CONFIG_AIO
 	{
 		.procname	= "aio-nr",
 		.data		= &aio_nr,
@@ -1295,6 +1296,7 @@ static struct ctl_table fs_table[] = {
 		.mode		= 0644,
 		.proc_handler	= &proc_doulongvec_minmax,
 	},
+#endif /* CONFIG_AIO */
 #ifdef CONFIG_INOTIFY_USER
 	{
 		.ctl_name	= FS_INOTIFY,