The feature has been introduced in kernel 3.7 and enabling it by
default is desired.
All features enabled by default are marked as such in
'mkfs.btrfs -O list-all' output.
Signed-off-by: David Sterba <dsterba@xxxxxxx>
---
mkfs.c | 13 ++++++++++---
1 file changed, 10 insertions(+), 3 deletions(-)
diff --git a/mkfs.c b/mkfs.c
index cd0af9ef8b4f..bdfc4b170700 100644
--- a/mkfs.c
+++ b/mkfs.c
@@ -46,6 +46,8 @@
static u64 index_cnt = 2;
+#define DEFAULT_MKFS_FEATURES (BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF)
+
#define DEFAULT_MKFS_LEAF_SIZE 16384
struct directory_name_entry {
@@ -1155,10 +1157,15 @@ static void list_all_fs_features(void)
fprintf(stderr, "Filesystem features available at mkfs time:\n");
for (i = 0; i < ARRAY_SIZE(mkfs_features) - 1; i++) {
- fprintf(stderr, "%-20s- %s (0x%llx)\n",
+ char *is_default = "";
+
+ if (mkfs_features[i].flag & DEFAULT_MKFS_FEATURES)
+ is_default = ", default";
+ fprintf(stderr, "%-20s- %s (0x%llx%s)\n",
mkfs_features[i].name,
mkfs_features[i].desc,
- mkfs_features[i].flag);
+ mkfs_features[i].flag,
+ is_default);
}
}
@@ -1249,7 +1256,7 @@ int main(int ac, char **av)
int dev_cnt = 0;
int saved_optind;
char estr[100];
- u64 features = 0;
+ u64 features = DEFAULT_MKFS_FEATURES;
while(1) {
int c;
--
1.8.4.2
--
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