Commit 073048d5 authored by Paul Eggert's avatar Paul Eggert
Browse files

Remove unnecessary ref to coreutils manual

* doc/lispref/files.texi: Document write-region-inhibit-fsync.
parent c417f08b
......@@ -661,6 +661,15 @@ feature is useful for programs that use files for internal purposes,
files that the user does not need to know about.
@end deffn
@defvar write-region-inhibit-fsync
If this variable's value is @code{nil}, @code{write-region} uses the
@code{fsync} system call after writing a file. Although this slows
Emacs down, it lessens the risk of data loss after power failure. If
the value is @code{t}, Emacs does not use @code{fsync}. The default
value is @code{nil} when Emacs is interactive, and @code{t} when Emacs
runs in batch mode. @xref{Files and Storage}.
@end defvar
@defmac with-temp-file file body@dots{}
@anchor{Definition of with-temp-file}
The @code{with-temp-file} macro evaluates the @var{body} forms with a
......@@ -1812,12 +1821,15 @@ copy on secondary storage is lost due to media failure. Second, the
operating system might not write data to secondary storage
immediately, which will lose the data if power is lost.
@findex write-region
@vindex write-region-inhibit-fsync
Although both sorts of failures can largely be avoided by a suitably
configured file system, such systems are typically more expensive or
less efficient. In more-typical systems, to survive media failure you
can copy the file to a different device, and to survive a power
failure you can invoke the @command{sync} utility (@pxref{sync
invocation,,, coreutils, The @sc{gnu} @code{Coreutils} Manual}).
failure you can use the @code{write-region} function with the
@code{write-region-inhibit-fsync} variable set to @code{nil}.
@xref{Writing to Files}.
@node File Names
@section File Names
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