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authorDavid Sterba <dsterba@suse.com>2016-01-27 14:06:29 +0100
committerChris Mason <clm@fb.com>2016-01-27 05:40:10 -0800
commitbf6092066f80840410e3401cd962b23d54a95713 (patch)
tree0d2e6c360d15afc0ec04b488b682e9d8c99c7d17 /fs/btrfs/sysfs.c
parent80ad623edd2d0ccb47d85357ee31c97e6c684e82 (diff)
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>
Diffstat (limited to 'fs/btrfs/sysfs.c')
-rw-r--r--fs/btrfs/sysfs.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/btrfs/sysfs.c b/fs/btrfs/sysfs.c
index 6986886243bf..539e7b5e3f86 100644
--- a/fs/btrfs/sysfs.c
+++ b/fs/btrfs/sysfs.c
@@ -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.