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btrfs-progs: revert skinny extents changes from mkfs

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We are going to unify enabling filesystem features via option -O.
For now, use btrfstune to enable the features.

Signed-off-by: David Sterba <dsterba@suse.cz>
This commit is contained in:
David Sterba 2013-04-09 19:11:36 +02:00
parent 7b20da8d52
commit a90354c5a1
2 changed files with 1 additions and 18 deletions
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8
man/mkfs.btrfs.8.in
View File

@ -17,7 +17,6 @@ mkfs.btrfs \- create a btrfs filesystem
[ \fB\-K\fP ]
[ \fB\-h\fP ]
[ \fB\-V\fP ]
[ \fB\-x\fP\fI skinny-extents\fP ]
\fI device\fP [ \fIdevice ...\fP ]
.SH DESCRIPTION
.B mkfs.btrfs
@ -80,13 +79,6 @@ Do not perform whole device TRIM operation by default.
.TP
\fB\-V\fR, \fB\-\-version\fR
Print the \fBmkfs.btrfs\fP version and exit.
.TP
\fB\-x\fR, \fB\-\-skinny\-extents\fR
Use the new skinny extents disk format. This is an non-backwards compatible
format change. This allows btrfs to use a smaller item for describing
metadata blocks in the extent tree. This results in a 30% savings in the
extent tree size, which improves performance on file systems with lots of
metadata.
.SH UNIT
As default the unit is the byte, however it is possible to append a suffix
to the arguments like \fBk\fP for KBytes, \fBm\fP for MBytes...

11
mkfs.c
View File

@ -337,7 +337,6 @@ static void print_usage(void)
fprintf(stderr, "\t -r --rootdir the source directory\n");
fprintf(stderr, "\t -K --nodiscard do not perform whole device TRIM\n");
fprintf(stderr, "\t -V --version print the mkfs.btrfs version and exit\n");
fprintf(stderr, "\t -x --skinny-extents use the new skinny extent disk format");
fprintf(stderr, "%s\n", BTRFS_BUILD_VERSION);
exit(1);
}
@ -398,7 +397,6 @@ static struct option long_options[] = {
{ "version", 0, NULL, 'V' },
{ "rootdir", 1, NULL, 'r' },
{ "nodiscard", 0, NULL, 'K' },
{ "skinny-extents", 0, NULL, 'x'},
{ 0, 0, 0, 0}
};
@ -1291,7 +1289,6 @@ int main(int ac, char **av)
int nodiscard = 0;
int ssd = 0;
int force_overwrite = 0;
int skinny_meta_extents = 0;
char *source_dir = NULL;
int source_dir_set = 0;
@ -1307,7 +1304,7 @@ int main(int ac, char **av)
while(1) {
int c;
c = getopt_long(ac, av, "A:b:fl:n:s:m:d:L:r:VMKx",
c = getopt_long(ac, av, "A:b:fl:n:s:m:d:L:r:VMK",
long_options, &option_index);
if (c < 0)
break;
@ -1359,9 +1356,6 @@ int main(int ac, char **av)
case 'K':
nodiscard=1;
break;
case 'x':
skinny_meta_extents = 1;
break;
default:
print_usage();
}
@ -1539,9 +1533,6 @@ raid_groups:
if (mixed)
flags |= BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS;
if (skinny_meta_extents)
flags |= BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA;
btrfs_set_super_incompat_flags(super, flags);
if ((data_profile | metadata_profile) &