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-rw-r--r--fs/btrfs/sysfs.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/fs/btrfs/sysfs.c b/fs/btrfs/sysfs.c
index 25294e624851..b1d1ac25237b 100644
--- a/fs/btrfs/sysfs.c
+++ b/fs/btrfs/sysfs.c
@@ -414,6 +414,12 @@ static ssize_t supported_sectorsizes_show(struct kobject *kobj,
BTRFS_ATTR(static_feature, supported_sectorsizes,
supported_sectorsizes_show);
+static ssize_t acl_show(struct kobject *kobj, struct kobj_attribute *a, char *buf)
+{
+ return sysfs_emit(buf, "%d\n", !!IS_ENABLED(CONFIG_BTRFS_FS_POSIX_ACL));
+}
+BTRFS_ATTR(static_feature, acl, acl_show);
+
/*
* Features which only depend on kernel version.
*
@@ -421,6 +427,7 @@ BTRFS_ATTR(static_feature, supported_sectorsizes,
* btrfs_supported_feature_attrs.
*/
static struct attribute *btrfs_supported_static_feature_attrs[] = {
+ BTRFS_ATTR_PTR(static_feature, acl),
BTRFS_ATTR_PTR(static_feature, rmdir_subvol),
BTRFS_ATTR_PTR(static_feature, supported_checksums),
BTRFS_ATTR_PTR(static_feature, send_stream_version),