'\" t
.\"     Title: d_invalidate
.\"    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 "D_INVALIDATE" "9" "January 2017" "Kernel Hackers Manual 4\&.8\&." "The Linux VFS"
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.SH "NAME"
d_invalidate \- detach submounts, prune dcache, and drop
.SH "SYNOPSIS"
.HP \w'void\ d_invalidate('u
.BI "void d_invalidate(struct\ dentry\ *\ " "dentry" ");"
.SH "ARGUMENTS"
.PP
\fIdentry\fR
.RS 4
dentry to invalidate (aka detach, prune and drop)
.RE
.SH "DESCRIPTION"
.PP
no dcache lock\&.
.PP
The final d_drop is done as an atomic operation relative to rename_lock ensuring there are no races with d_set_mounted\&. This ensures there are no unhashed dentries on the path to a mountpoint\&.
.SH "COPYRIGHT"
.br