We can use the ext4_has_feature_bigalloc() function directly to check
bigalloc feature and the variable has_bigalloc is reduncant, so remove
it.
Signed-off-by: NKaixu Xia <kaixuxia@tencent.com>
Reviewed-by: NAndreas Dilger <adilger@dilger.ca>
Link: https://lore.kernel.org/r/1586935542-29588-1-git-send-email-kaixuxia@tencent.comSigned-off-by: NTheodore Ts'o <tytso@mit.edu>