On 3/12/25 21:29, Eric Sandeen wrote:
> On 3/11/25 10:10 PM, Chao Yu wrote:
>> On 3/4/25 01:12, Eric Sandeen wrote:
>>> From: Eric Sandeen <sand...@sandeen.net>
>>>
>>> The current options parsing function both parses options and validates
>>> them - factor the validation out to reduce the size of the function and
>>> make transition to the new mount API possible, because under the new mount
>>> API, options are parsed one at a time, and cannot all be tested at the end
>>> of the parsing function.
>>>
>>> Signed-off-by: Eric Sandeen <sand...@redhat.com>
>>> ---
>>>  fs/f2fs/super.c | 16 ++++++++++++++--
>>>  1 file changed, 14 insertions(+), 2 deletions(-)
>>>
>>> diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
>>> index 29b3aa1ee99c..7cfd5e4e806e 100644
>>> --- a/fs/f2fs/super.c
>>> +++ b/fs/f2fs/super.c
>>> @@ -687,7 +687,7 @@ static int parse_options(struct super_block *sb, char 
>>> *options, bool is_remount)
>>>     int ret;
>>>  
>>>     if (!options)
>>> -           goto default_check;
>>
>> Eric, do you know in which condition options can be NULL, mount w/o any
>> specified options?
>>
>> If so, maybe we'd keep this in order to chech whether default options
>> generated from default_options() is conflicted or not? What do you think?
>>
>> Thanks,
> 
> Yes, that's I think that is correct - (!options) is true when no f2fs-specific
> options are present for parsing.
> 
> However, I think that we do still check default options with my patch in this
> case, because both calls to parse_options() still call f2fs_default_check()
> when parse_options() completes.
> 
> Or am I misunderstanding your question?
> 
> I added printks to check:
> 
> # mount -o loop,ro  f2fsfile.img mnt
> [root@fedora-rawhide f2fs-test]# dmesg 
> [847946.326384] loop2: detected capacity change from 0 to 819200
> [847946.337625] parse_options: (!options) is true
> [847946.337637] enter f2fs_default_check()

Oh, I missed that we will call f2fs_default_check() after default_options()
anyway, so I guess it's fine here.

Thanks for your confirmation.

> 
> Thank you for reviewing this series. I think at least the first 2 or 3 patches
> are suitable for merge now, if you agree. I am fairly certain that the rest of

I've reviewed other patches, they look clean to me, Jaegeuk has merged them into
dev-test branch, let's test them for a while.

> them are proper steps towards mount API conversion as well, but as I have not
> yet finished the work, I can't guarantee it yet. :)

Thanks for the effect, and good to see progress on changing to use new
mount API. :)

Thanks,

> 
> Thanks,
> -Eric
> 



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