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

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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>
This commit is contained in:
Qu Wenruo 2022-05-10 15:10:18 +08:00 committed by David Sterba
parent 97bdf1a903
commit d5321a0fa8
1 changed files with 2 additions and 2 deletions
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4
fs/btrfs/disk-io.c
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@ -3612,7 +3612,7 @@ int __cold open_ctree(struct super_block *sb, struct btrfs_fs_devices *fs_device
~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;
@ -3650,7 +3650,7 @@ int __cold open_ctree(struct super_block *sb, struct btrfs_fs_devices *fs_device
~BTRFS_FEATURE_COMPAT_RO_SUPP;
if (!sb_rdonly(sb) && 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;