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losetup: clean up --direct-io 

Signed-off-by: Karel Zak <kzak@redhat.com>
This commit is contained in:
Karel Zak 2015-11-19 11:57:05 +01:00
parent faeef4d2e9
commit f98d9641a3
2 changed files with 9 additions and 4 deletions
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4
sys-utils/losetup.8
View File

@ -91,6 +91,10 @@ Detach the file or device associated with the specified loop device(s).
.BR \-D , " \-\-detach\-all"
Detach all associated loop devices.
.TP
.BR "\-\-direct\-io"[\fI=on|off\fR]
Enable or disable direct I/O for the backing file. The optional argument can be
\fIon\fR or \fIoff\fR. If the optional argument is omitted, it defaults to \fIon\fR.
.TP
.BR \-f , " \-\-find"
Find the first unused loop device. If a
.I file

9
sys-utils/losetup.c
View File

@ -399,7 +399,7 @@ static void usage(FILE *out)
fputs(_(" --sizelimit <num> device is limited to <num> bytes of the file\n"), out);
fputs(_(" -P, --partscan create a partitioned loop device\n"), out);
fputs(_(" -r, --read-only set up a read-only loop device\n"), out);
fputs(_(" --direct-io open backing file with O_DIRECT\n"), out);
fputs(_(" --direct-io[=<on|off>] open backing file with O_DIRECT\n"), out);
fputs(_(" --show print device name after setup (with -f)\n"), out);
fputs(_(" -v, --verbose verbose mode\n"), out);
@ -477,7 +477,7 @@ int main(int argc, char **argv)
{ "sizelimit", 1, 0, OPT_SIZELIMIT },
{ "partscan", 0, 0, 'P' },
{ "read-only", 0, 0, 'r' },
{ "direct-io", 1, 0, OPT_DIO },
{ "direct-io", 2, 0, OPT_DIO },
{ "raw", 0, 0, OPT_RAW },
{ "show", 0, 0, OPT_SHOW },
{ "verbose", 0, 0, 'v' },
@ -568,8 +568,9 @@ int main(int argc, char **argv)
showdev = 1;
break;
case OPT_DIO:
set_dio = 1;
use_dio = strtoul_or_err(optarg, _("failed to parse dio"));
use_dio = set_dio = 1;
if (optarg)
use_dio = parse_switch(optarg, _("argument error"), "on", "off", NULL);
break;
case 'v':
break;