On 2017/10/17 7:04, Jaegeuk Kim wrote:
> On 10/16, Chao Yu wrote:
>> Hi Jaegeuk,
>>
>> On 2017/10/13 7:15, Jaegeuk Kim wrote:
>>> This patch returns an error number to quota_write in order for quota to handle
>>> it correctly.
>>
>> We should return error number like __generic_file_write_iter, right? it
>> needs to return written bytes if we have written one page or more, otherwise
>> return error number feedbacked from write_begin.
>>
>> So how about reverting 4f31d26b0c17 ("f2fs: return wrong error number on
>> f2fs_quota_write")?
>
> I thought like that, but realized the code change is somewhat different between
> them.
Hmm... main structure of codes here is copied from other file systems, is there
the same problem in *_quota_write of other file systems?
BTW, it looks making below judgment condition being useless.
if (len == towrite)
return 0;
Thanks,
>
> Thanks,
>
>>
>> Thanks,
>>
>>>
>>> Signed-off-by: Jaegeuk Kim <jaegeuk@xxxxxxxxxx>
>>> ---
>>> fs/f2fs/super.c | 5 ++++-
>>> 1 file changed, 4 insertions(+), 1 deletion(-)
>>>
>>> diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
>>> index 2feecf5e7f4c..840a0876005b 100644
>>> --- a/fs/f2fs/super.c
>>> +++ b/fs/f2fs/super.c
>>> @@ -1397,8 +1397,11 @@ static ssize_t f2fs_quota_write(struct super_block *sb, int type,
>>>
>>> err = a_ops->write_begin(NULL, mapping, off, tocopy, 0,
>>> &page, NULL);
>>> - if (unlikely(err))
>>> + if (unlikely(err)) {
>>> + if (len == towrite)
>>> + return err;
>>> break;
>>> + }
>>>
>>> kaddr = kmap_atomic(page);
>>> memcpy(kaddr + offset, data, tocopy);
>>>
>
> ------------------------------------------------------------------------------
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, Slashdot.org! http://sdm.link/slashdot
> _______________________________________________
> Linux-f2fs-devel mailing list
> Linux-f2fs-devel@xxxxxxxxxxxxxxxxxxxxx
> https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
>
