[PATCH -v2] ext4: speed up _require_ext4_bigalloc and _require_ext4_mkfs_bigalloc

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We don't need to make a full-sized file system in order to test
whether "mkfs.ext4 -O bigalloc" works.

Signed-off-by: Theodore Ts'o <tytso@xxxxxxx>
---
 common/rc | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/common/rc b/common/rc
index 285bd7c..0baac86 100644
--- a/common/rc
+++ b/common/rc
@@ -1189,7 +1189,7 @@ _require_xfs_crc()
 #
 _require_ext4_mkfs_bigalloc()
 {
-	_scratch_mkfs_ext4 -O bigalloc >/dev/null 2>&1 \
+	$MKFS_EXT4_PROG -F -O bigalloc -n $SCRATCH_DEV 200k >/dev/null 2>&1 \
 	   || _notrun "mkfs.ext4 doesn't have bigalloc feature"
 }
 
@@ -1197,7 +1197,7 @@ _require_ext4_mkfs_bigalloc()
 #
 _require_ext4_bigalloc()
 {
-	_scratch_mkfs_ext4 -O bigalloc >/dev/null 2>&1
+	$MKFS_EXT4_PROG -F -O bigalloc $SCRATCH_DEV 200k >/dev/null 2>&1
 	_scratch_mount >/dev/null 2>&1 \
 	   || _notrun "Ext4 kernel doesn't support bigalloc feature"
 	umount $SCRATCH_MNT
-- 
2.1.0

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