X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=os-linux.h;h=752d17e1e84db3af75726560574aaa20b712a8e1;hp=4c54c8ccc6f0991af3dfbf4edd16d3267c45e0ea;hb=25205e975e6dce6079a4b94d656724011f1aabd0;hpb=97fbdfa1a48a6b535d420e3f53bcb62ed4eff3f1;ds=sidebyside

diff --git a/os-linux.h b/os-linux.h
index 4c54c8cc..752d17e1 100644
--- a/os-linux.h
+++ b/os-linux.h
@@ -84,6 +84,18 @@ 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))