'\" t
.\"     Title: vfs_link
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: January 2017
.\"    Manual: The Linux VFS
.\"    Source: Kernel Hackers Manual 4.8.15
.\"  Language: English
.\"
.TH "VFS_LINK" "9" "January 2017" "Kernel Hackers Manual 4\&.8\&." "The Linux VFS"
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.SH "NAME"
vfs_link \- create a new link
.SH "SYNOPSIS"
.HP \w'int\ vfs_link('u
.BI "int vfs_link(struct\ dentry\ *\ " "old_dentry" ", struct\ inode\ *\ " "dir" ", struct\ dentry\ *\ " "new_dentry" ", struct\ inode\ **\ " "delegated_inode" ");"
.SH "ARGUMENTS"
.PP
\fIold_dentry\fR
.RS 4
object to be linked
.RE
.PP
\fIdir\fR
.RS 4
new parent
.RE
.PP
\fInew_dentry\fR
.RS 4
where to create the new link
.RE
.PP
\fIdelegated_inode\fR
.RS 4
returns inode needing a delegation break
.RE
.SH "DESCRIPTION"
.PP
The caller must hold dir\->i_mutex
.PP
If vfs_link discovers a delegation on the to\-be\-linked file in need of breaking, it will return \-EWOULDBLOCK and return a reference to the inode in delegated_inode\&. The caller should then break the delegation and retry\&. Because breaking a delegation may take a long time, the caller should drop the i_mutex before doing so\&.
.PP
Alternatively, a caller may pass NULL for delegated_inode\&. This may be appropriate for callers that expect the underlying filesystem not to be NFS exported\&.
.SH "COPYRIGHT"
.br