.\" This manpage has been automatically generated by docbook2man 
.\" from a DocBook document.  This tool can be found at:
.\" <http://shell.ipoline.com/~elmert/comp/docbook2X/> 
.\" Please send any bug reports, improvements, comments, patches, 
.\" etc. to Steve Cheng <steve@ggi-project.org>.
.TH "NTFS_TRUNCATE" "9" "09 October 2005" "" ""

.SH NAME
ntfs_truncate \- called when the i_size of an ntfs inode is changed
.SH SYNOPSIS
"SYNOPSIS"
.sp
\fB
.sp
int ntfs_truncate  (struct inode * \fIvi\fB);
\fR
.SH "ARGUMENTS"
.TP
\fB\fIvi\fB\fR
inode for which the i_size was changed
.SH "DESCRIPTION"
.PP
We do not support i_size changes yet.
.PP
The kernel guarantees that \fIvi\fR is a regular file (\fBS_ISREG\fR is true) and
that the change is allowed.
.PP
This implies for us that \fIvi\fR is a file inode rather than a directory, index,
or attribute inode as well as that \fIvi\fR is a base inode.
.PP
Returns 0 on success or -errno on error.
.PP
Called with ->i_sem held.  In all but one case ->i_alloc_sem is held for
writing.  The only case where ->i_alloc_sem is not held is
mm/filemap.c::\fBgeneric_file_buffered_write\fR where \fBvmtruncate\fR is called
with the current i_size as the offset which means that it is a noop as far
as \fBntfs_truncate\fR is concerned.