[CIFS] Correct cifs tcp retry when some data sent before getting EAGAIN.

Continue implementation of cifs umount begin to allow force unmounts of
cifs mounts.

Signed-off-by: Steve French <sfrench@us.ibm.com>

diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index e3177a0..fd5eae3 100644 (file)
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -407,9 +407,24 @@ static struct quotactl_ops cifs_quotactl_ops = {
 
 static void cifs_umount_begin(struct super_block * sblock)
 {
-       cERROR(1,("kill all tasks now - umount begin not implemented yet"));
+       struct cifs_sb_info *cifs_sb;
 
-/* BB FIXME - finish BB */
+       cifs_sb = CIFS_SB(sb);
+       if(cifs_sb == NULL)
+               return -EIO;
+       if(cifs_sb->tcon == NULL)
+               return -EIO;
+       down(&tcon->tconSem);
+       if (atomic_read(&tcon->useCount) == 1)
+               tcon->tidStatus = CifsExiting;
+       up(&tcon->tconSem);
+
+       if((cifs->sb->tcon->ses) && (cifs_sb->tcon->ses->server))
+       {
+               cERROR(1,("wake up tasks now - umount begin not complete"));
+               wake_up_all(&server->request_q);
+       }
+/* BB FIXME - finish add checks for tidStatus BB */
 
        return;
 }

diff --git a/fs/cifs/transport.c b/fs/cifs/transport.c
index d9b1169..d8865fb 100644 (file)
--- a/fs/cifs/transport.c
+++ b/fs/cifs/transport.c
@@ -169,6 +169,8 @@ smb_send(struct socket *ssocket, struct smb_hdr *smb_buffer,
                }
                if (rc < 0) 
                        break;
+               else
+                       i = 0; /* reset i after each successful send */
                iov.iov_base += rc;
                iov.iov_len -= rc;
                len -= rc;
@@ -263,6 +265,7 @@ smb_send2(struct socket *ssocket, struct kvec *iov, int n_vec,
                                }
                        }
                }
+               i = 0; /* in case we get ENOSPC on the next send */
        }
 
        if (rc < 0) {