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| author | David Sterba | 2016-02-17 15:24:14 +0100 |
|---|---|---|
| committer | David Sterba | 2016-02-23 12:56:21 +0100 |
| commit | c5868f8362f5620302c66848d400368f8d4b45f8 (patch) | |
| tree | 23238ca3d341afa5016af29323107f477c9f3c63 /fs/btrfs/ioctl.c | |
| parent | Linux 4.5-rc3 (diff) | |
| download | kernel-qcow2-linux-c5868f8362f5620302c66848d400368f8d4b45f8.tar.gz kernel-qcow2-linux-c5868f8362f5620302c66848d400368f8d4b45f8.tar.xz kernel-qcow2-linux-c5868f8362f5620302c66848d400368f8d4b45f8.zip | |
btrfs: add GET_SUPPORTED_FEATURES to the control device ioctls
The control device is accessible when no filesystem is mounted and we
may want to query features supported by the module. This is already
possible using the sysfs files, this ioctl is for parity and
convenience.
Reviewed-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/ioctl.c')
| -rw-r--r-- | fs/btrfs/ioctl.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index 952172ca7e45..f4c6ed5c5300 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -5187,8 +5187,7 @@ out_unlock: .compat_ro_flags = BTRFS_FEATURE_COMPAT_RO_##suffix, \ .incompat_flags = BTRFS_FEATURE_INCOMPAT_##suffix } -static int btrfs_ioctl_get_supported_features(struct file *file, - void __user *arg) +int btrfs_ioctl_get_supported_features(struct file *file, void __user *arg) { static const struct btrfs_ioctl_feature_flags features[3] = { INIT_FEATURE_FLAGS(SUPP), |