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btrfs: sysfs: check initialization state before updating features 

If the mount phase is not finished, we can't update the sysfs files.

Reported-by: Chris Mason <clm@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Chris Mason <clm@fb.com>
This commit is contained in:
David Sterba 2016-01-27 14:06:29 +01:00 committed by Chris Mason
parent 80ad623edd
commit bf6092066f
1 changed files with 3 additions and 0 deletions
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3
fs/btrfs/sysfs.c
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@ -804,6 +804,9 @@ void btrfs_sysfs_feature_update(struct btrfs_fs_info *fs_info,
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.