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Subject[PATCH -next] btrfs: remove unused function btrfs_sysfs_feature_update
Date
There are no in-tree callers.

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
---
fs/btrfs/sysfs.c | 33 ---------------------------------
fs/btrfs/sysfs.h | 2 --
2 files changed, 35 deletions(-)

diff --git a/fs/btrfs/sysfs.c b/fs/btrfs/sysfs.c
index 5a5930e..88f546d 100644
--- a/fs/btrfs/sysfs.c
+++ b/fs/btrfs/sysfs.c
@@ -872,39 +872,6 @@ int btrfs_sysfs_add_mounted(struct btrfs_fs_info *fs_info)
return error;
}

-
-/*
- * Change per-fs features in /sys/fs/btrfs/UUID/features to match current
- * values in superblock. Call after any changes to incompat/compat_ro flags
- */
-void btrfs_sysfs_feature_update(struct btrfs_fs_info *fs_info,
- u64 bit, enum btrfs_feature_set set)
-{
- struct btrfs_fs_devices *fs_devs;
- struct kobject *fsid_kobj;
- u64 features;
- int ret;
-
- if (!fs_info)
- return;
-
- features = get_features(fs_info, set);
- ASSERT(bit & supported_feature_masks[set]);
-
- fs_devs = fs_info->fs_devices;
- fsid_kobj = &fs_devs->fsid_kobj;
-
- if (!fsid_kobj->state_initialized)
- return;
-
- /*
- * FIXME: this is too heavy to update just one value, ideally we'd like
- * to use sysfs_update_group but some refactoring is needed first.
- */
- sysfs_remove_group(fsid_kobj, &btrfs_feature_attr_group);
- ret = sysfs_create_group(fsid_kobj, &btrfs_feature_attr_group);
-}
-
static int btrfs_init_debugfs(void)
{
#ifdef CONFIG_DEBUG_FS
diff --git a/fs/btrfs/sysfs.h b/fs/btrfs/sysfs.h
index 40716b3..ce5f4f5 100644
--- a/fs/btrfs/sysfs.h
+++ b/fs/btrfs/sysfs.h
@@ -88,7 +88,5 @@ int btrfs_sysfs_add_fsid(struct btrfs_fs_devices *fs_devs,
struct kobject *parent);
int btrfs_sysfs_add_device(struct btrfs_fs_devices *fs_devs);
void btrfs_sysfs_remove_fsid(struct btrfs_fs_devices *fs_devs);
-void btrfs_sysfs_feature_update(struct btrfs_fs_info *fs_info,
- u64 bit, enum btrfs_feature_set set);

#endif
--
2.7.0

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