From d3ab98e6919e9491f8ed7ffe37af73d35a55e1ca Mon Sep 17 00:00:00 2001 From: "Aneesh Kumar K.V" Date: Wed, 12 Oct 2011 19:11:23 +0530 Subject: hw/9pfs: Add new virtfs option writeout=immediate skip host page cache writeout=immediate implies the after pwritev we do a sync_file_range. Reviewed-by: Stefan Hajnoczi Signed-off-by: Aneesh Kumar K.V --- vl.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'vl.c') diff --git a/vl.c b/vl.c index dbf77781a7..b3c27f6660 100644 --- a/vl.c +++ b/vl.c @@ -2785,6 +2785,7 @@ int main(int argc, char **argv, char **envp) case QEMU_OPTION_virtfs: { QemuOpts *fsdev; QemuOpts *device; + const char *writeout; olist = qemu_find_opts("virtfs"); if (!olist) { @@ -2814,6 +2815,17 @@ int main(int argc, char **argv, char **envp) qemu_opt_get(opts, "mount_tag")); exit(1); } + + writeout = qemu_opt_get(opts, "writeout"); + if (writeout) { +#ifdef CONFIG_SYNC_FILE_RANGE + qemu_opt_set(fsdev, "writeout", writeout); +#else + fprintf(stderr, "writeout=immediate not supported on " + "this platform\n"); + exit(1); +#endif + } qemu_opt_set(fsdev, "fstype", qemu_opt_get(opts, "fstype")); qemu_opt_set(fsdev, "path", qemu_opt_get(opts, "path")); qemu_opt_set(fsdev, "security_model", -- cgit v1.2.1