[PATCH 1/2] btrfs: remove MIXED_BACKREF sysfs file

[Nikolay Borisov <nborisov@suse.com>]

This feature has been the default for about 13 year. At this point it's
safe to consider it an indispensable feature of BTRFS as such there's
no need to advertise it in sysfs. Simply remove the sysfs file.

Signed-off-by: Nikolay Borisov <nborisov@suse.com>
---
 fs/btrfs/sysfs.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/fs/btrfs/sysfs.c b/fs/btrfs/sysfs.c
index d4502f0e4fca..715d1e725f2a 100644
--- a/fs/btrfs/sysfs.c
+++ b/fs/btrfs/sysfs.c
@@ -276,7 +276,6 @@ static umode_t btrfs_feature_visible(struct kobject *kobj,
 	return mode;
 }
 
-BTRFS_FEAT_ATTR_INCOMPAT(mixed_backref, MIXED_BACKREF);
 BTRFS_FEAT_ATTR_INCOMPAT(default_subvol, DEFAULT_SUBVOL);
 BTRFS_FEAT_ATTR_INCOMPAT(mixed_groups, MIXED_GROUPS);
 BTRFS_FEAT_ATTR_INCOMPAT(compress_lzo, COMPRESS_LZO);
@@ -308,7 +307,6 @@ BTRFS_FEAT_ATTR_COMPAT_RO(verity, VERITY);
  *                               can be changed on a mounted filesystem.
  */
 static struct attribute *btrfs_supported_feature_attrs[] = {
-	BTRFS_FEAT_ATTR_PTR(mixed_backref),
 	BTRFS_FEAT_ATTR_PTR(default_subvol),
 	BTRFS_FEAT_ATTR_PTR(mixed_groups),
 	BTRFS_FEAT_ATTR_PTR(compress_lzo),
-- 
2.25.1