1 files changed, 26 insertions, 5 deletions

diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index ac4f260155c8..9d7996e8e793 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -207,6 +207,19 @@ cifs_statfs(struct dentry *dentry, struct kstatfs *buf)
 	return 0;
 }
 
+static long cifs_fallocate(struct file *file, int mode, loff_t off, loff_t len)
+{
+	struct super_block *sb = file->f_path.dentry->d_sb;
+	struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
+	struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb);
+	struct TCP_Server_Info *server = tcon->ses->server;
+
+	if (server->ops->fallocate)
+		return server->ops->fallocate(file, tcon, mode, off, len);
+
+	return -EOPNOTSUPP;
+}
+
 static int cifs_permission(struct inode *inode, int mask)
 {
 	struct cifs_sb_info *cifs_sb;
@@ -800,7 +813,8 @@ static loff_t cifs_llseek(struct file *file, loff_t offset, int whence)
 	return generic_file_llseek(file, offset, whence);
 }
 
-static int cifs_setlease(struct file *file, long arg, struct file_lock **lease)
+static int
+cifs_setlease(struct file *file, long arg, struct file_lock **lease, void **priv)
 {
 	/*
 	 * Note that this is called by vfs setlease with i_lock held to
@@ -812,10 +826,11 @@ static int cifs_setlease(struct file *file, long arg, struct file_lock **lease)
 	if (!(S_ISREG(inode->i_mode)))
 		return -EINVAL;
 
-	/* check if file is oplocked */
-	if (((arg == F_RDLCK) && CIFS_CACHE_READ(CIFS_I(inode))) ||
+	/* Check if file is oplocked if this is request for new lease */
+	if (arg == F_UNLCK ||
+	    ((arg == F_RDLCK) && CIFS_CACHE_READ(CIFS_I(inode))) ||
 	    ((arg == F_WRLCK) && CIFS_CACHE_WRITE(CIFS_I(inode))))
-		return generic_setlease(file, arg, lease);
+		return generic_setlease(file, arg, lease, priv);
 	else if (tlink_tcon(cfile->tlink)->local_lease &&
 		 !CIFS_CACHE_READ(CIFS_I(inode)))
 		/*
@@ -826,7 +841,7 @@ static int cifs_setlease(struct file *file, long arg, struct file_lock **lease)
 		 * knows that the file won't be changed on the server by anyone
 		 * else.
 		 */
-		return generic_setlease(file, arg, lease);
+		return generic_setlease(file, arg, lease, priv);
 	else
 		return -EAGAIN;
 }
@@ -908,6 +923,7 @@ const struct file_operations cifs_file_ops = {
 	.unlocked_ioctl	= cifs_ioctl,
 #endif /* CONFIG_CIFS_POSIX */
 	.setlease = cifs_setlease,
+	.fallocate = cifs_fallocate,
 };
 
 const struct file_operations cifs_file_strict_ops = {
@@ -927,6 +943,7 @@ const struct file_operations cifs_file_strict_ops = {
 	.unlocked_ioctl	= cifs_ioctl,
 #endif /* CONFIG_CIFS_POSIX */
 	.setlease = cifs_setlease,
+	.fallocate = cifs_fallocate,
 };
 
 const struct file_operations cifs_file_direct_ops = {
@@ -947,6 +964,7 @@ const struct file_operations cifs_file_direct_ops = {
 #endif /* CONFIG_CIFS_POSIX */
 	.llseek = cifs_llseek,
 	.setlease = cifs_setlease,
+	.fallocate = cifs_fallocate,
 };
 
 const struct file_operations cifs_file_nobrl_ops = {
@@ -965,6 +983,7 @@ const struct file_operations cifs_file_nobrl_ops = {
 	.unlocked_ioctl	= cifs_ioctl,
 #endif /* CONFIG_CIFS_POSIX */
 	.setlease = cifs_setlease,
+	.fallocate = cifs_fallocate,
 };
 
 const struct file_operations cifs_file_strict_nobrl_ops = {
@@ -983,6 +1002,7 @@ const struct file_operations cifs_file_strict_nobrl_ops = {
 	.unlocked_ioctl	= cifs_ioctl,
 #endif /* CONFIG_CIFS_POSIX */
 	.setlease = cifs_setlease,
+	.fallocate = cifs_fallocate,
 };
 
 const struct file_operations cifs_file_direct_nobrl_ops = {
@@ -1002,6 +1022,7 @@ const struct file_operations cifs_file_direct_nobrl_ops = {
 #endif /* CONFIG_CIFS_POSIX */
 	.llseek = cifs_llseek,
 	.setlease = cifs_setlease,
+	.fallocate = cifs_fallocate,
 };
 
 const struct file_operations cifs_dir_ops = {