Re: [PATCH v3 0/6] btrfs: use the super_block as bdev holder

[Qu Wenruo <wqu@suse.com>]

在 2025/6/19 22:59, David Sterba 写道:
> On Tue, Jun 17, 2025 at 02:49:33PM +0930, Qu Wenruo wrote:
>> [CHANGELOG]
>> v3:
>> - Drop the btrfs_fs_devices::opened split
>>    It turns out to cause problems during tests.
>>
>> - Extra cleanup related to the btrfs_get_tree_*()
>>    Now the re-entry through vfs_get_tree() is completely dropped.
>>
>> - Extra comments explaining the sget_fc() behavior
>>
>> - Call bdev_fput() instead of fput()
>>    This alignes us to all the other fses.
>>
>> - Updated patch to delay btrfs_open_devices() until sget_fc()
>>    Instead of relying on the previous solution (split
>>    btrfs_open_devices::opened), just expand the uuid_mutex critical
>>    section.
> 
> I've added the patches to linux-next for testing.

Thanks, although I have a 3-lines small patch to pass &fs_holder_ops 
into all the bdev_file_open_by_path() calls, to enable bdev freeze/thaw 
support.

That has already passed several rounds of tests here, and I believe it 
may solve the problem of btrfs corruption during hibernation/suspension.

Should I just send it right now for extra tests, or stick to my original 
plan to submit that along with the full shutdown support?

Thanks,
Qu