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Diffstat (limited to 'qemu-io.c')
-rw-r--r--qemu-io.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/qemu-io.c b/qemu-io.c
index a68f195c1..f96a4de6b 100644
--- a/qemu-io.c
+++ b/qemu-io.c
@@ -1401,6 +1401,7 @@ static void usage(const char *name)
" -n, --nocache disable host cache\n"
" -g, --growable allow file to grow (only applies to protocols)\n"
" -m, --misalign misalign allocations for O_DIRECT\n"
+" -k, --native-aio use kernel AIO implementation (on Linux only)\n"
" -h, --help display this help and exit\n"
" -V, --version output version information and exit\n"
"\n",
@@ -1412,7 +1413,7 @@ int main(int argc, char **argv)
{
int readonly = 0;
int growable = 0;
- const char *sopt = "hVc:Crsnmg";
+ const char *sopt = "hVc:Crsnmgk";
struct option lopt[] = {
{ "help", 0, NULL, 'h' },
{ "version", 0, NULL, 'V' },
@@ -1424,6 +1425,7 @@ int main(int argc, char **argv)
{ "nocache", 0, NULL, 'n' },
{ "misalign", 0, NULL, 'm' },
{ "growable", 0, NULL, 'g' },
+ { "native-aio", 0, NULL, 'k' },
{ NULL, 0, NULL, 0 }
};
int c;
@@ -1455,6 +1457,9 @@ int main(int argc, char **argv)
case 'g':
growable = 1;
break;
+ case 'k':
+ flags |= BDRV_O_NATIVE_AIO;
+ break;
case 'V':
printf("%s version %s\n", progname, VERSION);
exit(0);