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| author | Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> | 2011-10-12 19:11:23 +0530 |
|---|---|---|
| committer | Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> | 2011-10-12 19:11:23 +0530 |
| commit | d3ab98e6919e9491f8ed7ffe37af73d35a55e1ca (patch) | |
| tree | 0e805d6c9a58229dbc51f92b3ff3ee9d430e1c02 /hw/9pfs/virtio-9p.c | |
| parent | 5745e38afeaa15153c2209674fe37e1cbdd65707 (diff) | |
| download | qemu-d3ab98e6919e9491f8ed7ffe37af73d35a55e1ca.tar.gz qemu-d3ab98e6919e9491f8ed7ffe37af73d35a55e1ca.tar.bz2 qemu-d3ab98e6919e9491f8ed7ffe37af73d35a55e1ca.zip | |
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 <stefanha@linux.vnet.ibm.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Diffstat (limited to 'hw/9pfs/virtio-9p.c')
| -rw-r--r-- | hw/9pfs/virtio-9p.c | 22 |
1 files changed, 16 insertions, 6 deletions
diff --git a/hw/9pfs/virtio-9p.c b/hw/9pfs/virtio-9p.c index c01c31aa25..3958788248 100644 --- a/hw/9pfs/virtio-9p.c +++ b/hw/9pfs/virtio-9p.c @@ -80,6 +80,20 @@ void cred_init(FsCred *credp) credp->fc_rdev = -1; } +static int get_dotl_openflags(V9fsState *s, int oflags) +{ + int flags; + /* + * Filter the client open flags + */ + flags = oflags & ~(O_NOCTTY | O_ASYNC | O_CREAT); + /* + * Ignore direct disk access hint until the server supports it. + */ + flags &= ~O_DIRECT; + return flags; +} + void v9fs_string_init(V9fsString *str) { str->data = NULL; @@ -1598,10 +1612,7 @@ static void v9fs_open(void *opaque) err = offset; } else { if (s->proto_version == V9FS_PROTO_2000L) { - flags = mode; - flags &= ~(O_NOCTTY | O_ASYNC | O_CREAT); - /* Ignore direct disk access hint until the server supports it. */ - flags &= ~O_DIRECT; + flags = get_dotl_openflags(s, mode); } else { flags = omode_to_uflags(mode); } @@ -1650,8 +1661,7 @@ static void v9fs_lcreate(void *opaque) goto out_nofid; } - /* Ignore direct disk access hint until the server supports it. */ - flags &= ~O_DIRECT; + flags = get_dotl_openflags(pdu->s, flags); err = v9fs_co_open2(pdu, fidp, &name, gid, flags | O_CREAT, mode, &stbuf); if (err < 0) { |