On Fri, Oct 22, 2010 at 7:15 PM, Venkateswararao Jujjuri (JV)
<jv...@linux.vnet.ibm.com> wrote:
> SYNOPSIS
> size[4] Tfsync tag[2] fid[4] datasync[4]
>
> size[4] Rfsync tag[2]
>
> DESCRIPTION
>
> The Tfsync transaction transfers ("flushes") all modified in-core data of
> file identified by fid to the disk device (or other permanent storage
> device) where that file resides.
>
> If datasync flag is specified data will be fleshed but does not flush
> modified metadata unless that metadata is needed in order to allow a
> subsequent data retrieval to be correctly handled.
>
> Signed-off-by: Venkateswararao Jujjuri <jv...@linux.vnet.ibm.com>
> ---
> hw/file-op-9p.h | 2 +-
> hw/virtio-9p-local.c | 8 ++++++--
> hw/virtio-9p.c | 11 ++++++-----
> 3 files changed, 13 insertions(+), 8 deletions(-)
>
> diff --git a/hw/file-op-9p.h b/hw/file-op-9p.h
> index 21d60b5..c7731c2 100644
> --- a/hw/file-op-9p.h
> +++ b/hw/file-op-9p.h
> @@ -86,7 +86,7 @@ typedef struct FileOperations
> int (*fstat)(FsContext *, int, struct stat *);
> int (*rename)(FsContext *, const char *, const char *);
> int (*truncate)(FsContext *, const char *, off_t);
> - int (*fsync)(FsContext *, int);
> + int (*fsync)(FsContext *, int, int);
> int (*statfs)(FsContext *s, const char *path, struct statfs *stbuf);
> ssize_t (*lgetxattr)(FsContext *, const char *,
> const char *, void *, size_t);
> diff --git a/hw/virtio-9p-local.c b/hw/virtio-9p-local.c
> index 0d52020..d0c79e4 100644
> --- a/hw/virtio-9p-local.c
> +++ b/hw/virtio-9p-local.c
> @@ -490,9 +490,13 @@ static int local_remove(FsContext *ctx, const char *path)
> return remove(rpath(ctx, path));
> }
>
> -static int local_fsync(FsContext *ctx, int fd)
> +static int local_fsync(FsContext *ctx, int fd, int datasync)
> {
> - return fsync(fd);
> + if (datasync) {
> + return fdatasync(fd);
Please use qemu_fdatasync().
