X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=os%2Fos-linux.h;h=f7154a4af2c16e32ea9e51989f22e4e7af9a8d21;hp=df0ec2dbdb51a692cc52f93097a0238844aad1ef;hb=8e239cae8aae89f07a885ffcc985600ce9c65d5d;hpb=093729f73bc4be4095adc1743ad25bdeac0d3633

diff --git a/os/os-linux.h b/os/os-linux.h
index df0ec2db..f7154a4a 100644
--- a/os/os-linux.h
+++ b/os/os-linux.h
@@ -36,6 +36,7 @@
 #define FIO_HAVE_CGROUPS
 #define FIO_HAVE_FDATASYNC
 #define FIO_HAVE_FS_STAT
+#define FIO_HAVE_TRIM
 
 #ifdef SYNC_FILE_RANGE_WAIT_BEFORE
 #define FIO_HAVE_SYNC_FILE_RANGE
@@ -185,6 +186,10 @@ enum {
 #define BLKFLSBUF	_IO(0x12,97)
 #endif
 
+#ifndef BLKDISCARD
+#define BLKDISCARD	_IO(0x12,119)
+#endif
+
 static inline int blockdev_invalidate_cache(int fd)
 {
 	return ioctl(fd, BLKFLSBUF);
@@ -298,4 +303,18 @@ static inline unsigned long long get_fs_size(const char *path)
 	return ret;
 }
 
+static inline int os_trim(int fd, unsigned long long start,
+			  unsigned long long len)
+{
+	uint64_t range[2];
+
+	range[0] = start;
+	range[1] = len;
+
+	if (!ioctl(fd, BLKDISCARD, range))
+		return 0;
+
+	return errno;
+}
+
 #endif