mmap IO engine cannot extend a file

[fio.git] / os-linux.h

diff --git a/os-linux.h b/os-linux.h
index 4c54c8ccc6f0991af3dfbf4edd16d3267c45e0ea..657a679e23486e0e8e319d3cc10dd8f8a7c635f4 100644 (file)
--- a/os-linux.h
+++ b/os-linux.h
@@ -18,6 +18,14 @@
 #define FIO_HAVE_SPLICE
 #define FIO_HAVE_IOSCHED_SWITCH
 #define FIO_HAVE_ODIRECT
+#define FIO_HAVE_HUGETLB
+
+/*
+ * Only for x86 currently
+ */
+#if defined(__i386__)
+#define FIO_HAVE_SYSLET
+#endif
 
 #define OS_MAP_ANON            (MAP_ANONYMOUS)
 
@@ -72,6 +80,36 @@ static inline int vmsplice(int fd, const struct iovec *iov,
 
 #define SPLICE_DEF_SIZE        (64*1024)
 
+#ifdef FIO_HAVE_SYSLET
+/*
+ * syslet stuff
+ */
+static inline long async_register(void *uah, unsigned int len)
+{
+       return syscall(__NR_async_register, uah, len);
+}
+
+static inline void *async_exec(void *data)
+{
+       return (void *) syscall(__NR_async_exec, data);
+}
+
+static inline long async_wait(unsigned long min_events)
+{
+       return syscall(__NR_async_wait, min_events);
+}
+
+static inline long async_unregister(void *uah, unsigned int len)
+{
+       return syscall(__NR_async_unregister, uah, len);
+}
+
+static inline long umem_add(unsigned long *uptr, unsigned long inc)
+{
+       return syscall(__NR_umem_add, uptr, inc);
+}
+#endif /* FIO_HAVE_SYSLET */
+
 enum {
        IOPRIO_WHO_PROCESS = 1,
        IOPRIO_WHO_PGRP,
@@ -84,6 +122,18 @@ enum {
 #define BLKGETSIZE64   _IOR(0x12,114,size_t)
 #endif
 
+#ifndef BLKFLSBUF
+#define BLKFLSBUF      _IO(0x12,97)
+#endif
+
+static inline int blockdev_invalidate_cache(int fd)
+{
+       if (!ioctl(fd, BLKFLSBUF))
+               return 0;
+
+       return errno;
+}
+
 static inline int blockdev_size(int fd, unsigned long long *bytes)
 {
        if (!ioctl(fd, BLKGETSIZE64, bytes))