1 files changed, 47 insertions, 0 deletions

diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index 7935816fa111..293e9b767621 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -219,6 +219,53 @@ posix_open_ret:
         return rc;
 }
 
+struct cifsFileInfo *
+cifs_new_fileinfo(__u16 fileHandle, struct file *file,
+                  struct tcon_link *tlink, __u32 oplock)
+{
+        struct dentry *dentry = file->f_path.dentry;
+        struct inode *inode = dentry->d_inode;
+        struct cifsInodeInfo *pCifsInode = CIFS_I(inode);
+        struct cifsFileInfo *pCifsFile;
+
+        pCifsFile = kzalloc(sizeof(struct cifsFileInfo), GFP_KERNEL);
+        if (pCifsFile == NULL)
+                return pCifsFile;
+
+        pCifsFile->netfid = fileHandle;
+        pCifsFile->pid = current->tgid;
+        pCifsFile->uid = current_fsuid();
+        pCifsFile->dentry = dget(dentry);
+        pCifsFile->f_flags = file->f_flags;
+        pCifsFile->invalidHandle = false;
+        pCifsFile->closePend = false;
+        pCifsFile->tlink = cifs_get_tlink(tlink);
+        mutex_init(&pCifsFile->fh_mutex);
+        mutex_init(&pCifsFile->lock_mutex);
+        INIT_LIST_HEAD(&pCifsFile->llist);
+        atomic_set(&pCifsFile->count, 1);
+        INIT_WORK(&pCifsFile->oplock_break, cifs_oplock_break);
+
+        write_lock(&GlobalSMBSeslock);
+        list_add(&pCifsFile->tlist, &(tlink_tcon(tlink)->openFileList));
+        /* if readable file instance put first in list*/
+        if (file->f_mode & FMODE_READ)
+                list_add(&pCifsFile->flist, &pCifsInode->openFileList);
+        else
+                list_add_tail(&pCifsFile->flist, &pCifsInode->openFileList);
+        write_unlock(&GlobalSMBSeslock);
+
+        if ((oplock & 0xF) == OPLOCK_EXCLUSIVE) {
+                pCifsInode->clientCanCacheAll = true;
+                pCifsInode->clientCanCacheRead = true;
+                cFYI(1, "Exclusive Oplock inode %p", inode);
+        } else if ((oplock & 0xF) == OPLOCK_READ)
+                pCifsInode->clientCanCacheRead = true;
+
+        file->private_data = pCifsFile;
+        return pCifsFile;
+}
+
 int cifs_open(struct inode *inode, struct file *file)
 {
         int rc = -EACCES;