btrfs: add "0x" prefix for unsupported optional features

commit d5321a0fa8 upstream.

The following error message lack the "0x" obviously:

  cannot mount because of unsupported optional features (4000)

Add the prefix to make it less confusing. This can happen on older
kernels that try to mount a filesystem with newer features so it makes
sense to backport to older trees.

CC: stable@vger.kernel.org # 4.14+
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Qu Wenruo
2022-05-10 15:10:18 +08:00
committed by Chris
parent d3b54c5d1e
commit f63b6fb3a7

View File

@@ -2716,7 +2716,7 @@ int open_ctree(struct super_block *sb,
~BTRFS_FEATURE_INCOMPAT_SUPP;
if (features) {
btrfs_err(fs_info,
"cannot mount because of unsupported optional features (%llx)",
"cannot mount because of unsupported optional features (0x%llx)",
features);
err = -EINVAL;
goto fail_alloc;
@@ -2769,7 +2769,7 @@ int open_ctree(struct super_block *sb,
~BTRFS_FEATURE_COMPAT_RO_SUPP;
if (!(sb->s_flags & MS_RDONLY) && features) {
btrfs_err(fs_info,
"cannot mount read-write because of unsupported optional features (%llx)",
"cannot mount read-write because of unsupported optional features (0x%llx)",
features);
err = -EINVAL;
goto fail_alloc;