From 14e46e04958df740c6c6a94849f176159a333f13 Mon Sep 17 00:00:00 2001 From: David Sterba Date: Thu, 21 Jan 2016 18:54:41 +0100 Subject: btrfs: synchronize incompat feature bits with sysfs files The files under /sys/fs/UUID/features get out of sync with the actual incompat bits set for the filesystem if they change after mount (eg. the LZO compression). Synchronize the feature bits with the sysfs files representing them right after we set/clear them. Signed-off-by: David Sterba --- fs/btrfs/ioctl.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'fs/btrfs/ioctl.c') diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index e392dd67f0ba..209dcfa9ab33 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -1455,6 +1455,8 @@ int btrfs_defrag_file(struct inode *inode, struct file *file, if (range->compress_type == BTRFS_COMPRESS_LZO) { btrfs_set_fs_incompat(root->fs_info, COMPRESS_LZO); + btrfs_sysfs_feature_update(root->fs_info, + BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO, FEAT_INCOMPAT); } ret = defrag_count; @@ -4063,6 +4065,8 @@ static long btrfs_ioctl_default_subvol(struct file *file, void __user *argp) btrfs_free_path(path); btrfs_set_fs_incompat(root->fs_info, DEFAULT_SUBVOL); + btrfs_sysfs_feature_update(root->fs_info, + BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL, FEAT_INCOMPAT); btrfs_end_transaction(trans, root); out: mnt_drop_write_file(file); -- cgit