From ae1ef571fc4ce5cc016311a030357c6a8d851dfe Mon Sep 17 00:00:00 2001
From: Venkateswararao Jujjuri <jvrao@linux.vnet.ibm.com>
Date: Mon, 8 Aug 2011 23:50:20 +0530
Subject: [PATCH] hw/9pfs: Update v9fs_remove to use coroutines

Signed-off-by: Venkateswararao Jujjuri <jvrao@linux.vnet.ibm.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
---
 hw/9pfs/virtio-9p.c | 50 +++++++++++++-------------------------------------
 hw/9pfs/virtio-9p.h |  6 ------
 2 files changed, 13 insertions(+), 43 deletions(-)

diff --git a/hw/9pfs/virtio-9p.c b/hw/9pfs/virtio-9p.c
index 37ba72c..86d4dec 100644
--- a/hw/9pfs/virtio-9p.c
+++ b/hw/9pfs/virtio-9p.c
@@ -211,11 +211,6 @@ static int v9fs_do_utimensat(V9fsState *s, V9fsString *path,
     return s->ops->utimensat(&s->ctx, path->data, times);
 }
 
-static int v9fs_do_remove(V9fsState *s, V9fsString *path)
-{
-    return s->ops->remove(&s->ctx, path->data);
-}
-
 static int v9fs_do_fsync(V9fsState *s, int fd, int datasync)
 {
     return s->ops->fsync(&s->ctx, fd, datasync);
@@ -2579,49 +2574,30 @@ out:
     complete_pdu(s, pdu, err);
 }
 
-static void v9fs_remove_post_remove(V9fsState *s, V9fsRemoveState *vs,
-                                                                int err)
-{
-    if (err < 0) {
-        err = -errno;
-    } else {
-        err = vs->offset;
-    }
-
-    /* For TREMOVE we need to clunk the fid even on failed remove */
-    free_fid(s, vs->fidp->fid);
-
-    complete_pdu(s, vs->pdu, err);
-    qemu_free(vs);
-}
-
 static void v9fs_remove(void *opaque)
 {
-    V9fsPDU *pdu = opaque;
-    V9fsState *s = pdu->s;
     int32_t fid;
-    V9fsRemoveState *vs;
     int err = 0;
+    size_t offset = 7;
+    V9fsFidState *fidp;
+    V9fsPDU *pdu = opaque;
 
-    vs = qemu_malloc(sizeof(*vs));
-    vs->pdu = pdu;
-    vs->offset = 7;
-
-    pdu_unmarshal(vs->pdu, vs->offset, "d", &fid);
+    pdu_unmarshal(pdu, offset, "d", &fid);
 
-    vs->fidp = lookup_fid(s, fid);
-    if (vs->fidp == NULL) {
+    fidp = lookup_fid(pdu->s, fid);
+    if (fidp == NULL) {
         err = -EINVAL;
         goto out;
     }
+    err = v9fs_co_remove(pdu->s, &fidp->path);
+    if (!err) {
+        err = offset;
+    }
 
-    err = v9fs_do_remove(s, &vs->fidp->path);
-    v9fs_remove_post_remove(s, vs, err);
-    return;
-
+    /* For TREMOVE we need to clunk the fid even on failed remove */
+    free_fid(pdu->s, fidp->fid);
 out:
-    complete_pdu(s, pdu, err);
-    qemu_free(vs);
+    complete_pdu(pdu->s, pdu, err);
 }
 
 static void v9fs_wstat_post_truncate(V9fsState *s, V9fsWstatState *vs, int err)
diff --git a/hw/9pfs/virtio-9p.h b/hw/9pfs/virtio-9p.h
index 3ed46ab..194f0ea 100644
--- a/hw/9pfs/virtio-9p.h
+++ b/hw/9pfs/virtio-9p.h
@@ -333,12 +333,6 @@ typedef struct V9fsWriteState {
     int cnt;
 } V9fsWriteState;
 
-typedef struct V9fsRemoveState {
-    V9fsPDU *pdu;
-    size_t offset;
-    V9fsFidState *fidp;
-} V9fsRemoveState;
-
 typedef struct V9fsWstatState
 {
     V9fsPDU *pdu;
-- 
2.7.4