linux-kernel - Re: [f2fs-dev] [PATCH] f2fs: zone: fix to don't trigger OPU on pinfile for direct IO

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Message-ID: <ef4788ca-1336-4adf-ac82-b5f2619bb83f@kernel.org>
Date: Sat, 27 Apr 2024 09:50:42 +0800
From: Chao Yu <chao@...nel.org>
To: Zhiguo Niu <niuzhiguo84@...il.com>
Cc: jaegeuk@...nel.org, linux-kernel@...r.kernel.org,
 linux-f2fs-devel@...ts.sourceforge.net
Subject: Re: [f2fs-dev] [PATCH] f2fs: zone: fix to don't trigger OPU on
 pinfile for direct IO

On 2024/4/26 19:30, Zhiguo Niu wrote:
> Dear Chao,
> 
> On Fri, Apr 26, 2024 at 6:37 PM Chao Yu <chao@...nel.org> wrote:
>>
>> Otherwise, it breaks pinfile's sematics.
>>
>> Cc: Daeho Jeong <daeho43@...il.com>
>> Signed-off-by: Chao Yu <chao@...nel.org>
>> ---
>>   fs/f2fs/data.c | 3 ++-
>>   1 file changed, 2 insertions(+), 1 deletion(-)
>>
>> diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
>> index bee1e45f76b8..e29000d83d52 100644
>> --- a/fs/f2fs/data.c
>> +++ b/fs/f2fs/data.c
>> @@ -1596,7 +1596,8 @@ int f2fs_map_blocks(struct inode *inode, struct f2fs_map_blocks *map, int flag)
>>
>>          /* use out-place-update for direct IO under LFS mode */
>>          if (map->m_may_create &&
>> -           (is_hole || (f2fs_lfs_mode(sbi) && flag == F2FS_GET_BLOCK_DIO))) {
>> +           (is_hole || (flag == F2FS_GET_BLOCK_DIO && (f2fs_lfs_mode(sbi) &&
>> +           (!f2fs_sb_has_blkzoned(sbi) || !f2fs_is_pinned_file(inode)))))) {
> Excuse me I a little question， should pin files not be written in OPU
> mode regardless of device type(conventional or  zone)?

Agreed, so it looks we need remove !f2fs_sb_has_blkzoned condition here...

Thanks,

> thanks!
>>                  if (unlikely(f2fs_cp_error(sbi))) {
>>                          err = -EIO;
>>                          goto sync_out;
>> --
>> 2.40.1
>>
>>
>>
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