Re: [f2fs-dev] [PATCH 4/6] f2fs: avoid unnecessary fscrypt_finalize_bounce_page()

[Chao Yu <chao@kernel.org>]

On 6/16/26 06:14, Jaegeuk Kim wrote:
> On 06/15, Chao Yu via Linux-f2fs-devel wrote:
>> fscrypt_finalize_bounce_page() should be called only if we use fs layer
>> crypto, let's avoid unnecessary fscrypt_finalize_bounce_page() in error
>> path of f2fs_write_compressed_pages().
>>
>> BTW, fscrypt_finalize_bounce_page() will check mapping of bounced page
>> before retrieving original page, so, previously it won't cause any issue
>> w/ fscrypt_finalize_bounce_page(), but still we'd better avoid coupling
>> w/ any logic inside fscrypt_finalize_bounce_page().
>>
>> Signed-off-by: Chao Yu <chao@kernel.org>
>> ---
>>  fs/f2fs/compress.c | 10 ++++++----
>>  1 file changed, 6 insertions(+), 4 deletions(-)
>>
>> diff --git a/fs/f2fs/compress.c b/fs/f2fs/compress.c
>> index caf522d667d6..aaa0813eabcd 100644
>> --- a/fs/f2fs/compress.c
>> +++ b/fs/f2fs/compress.c
>> @@ -1455,10 +1455,12 @@ static int f2fs_write_compressed_pages(struct compress_ctx *cc,
>>  out_destroy_crypt:
>>  	page_array_free(sbi, cic->rpages, cc->cluster_size);
>>  
>> -	for (--i; i >= 0; i--) {
>> -		if (!cc->cpages[i])
>> -			continue;
>> -		fscrypt_finalize_bounce_page(&cc->cpages[i]);
>> +	if (fio.encrypted) {
>> +		for (--i; i >= 0; i--) {
>> +			if (!cc->cpages[i])
>> +				continue;
>> +			fscrypt_finalize_bounce_page(&cc->cpages[i]);
>> +		}
> 
> Applied as:
> 
> --- a/fs/f2fs/compress.c
> +++ b/fs/f2fs/compress.c
> @@ -1455,6 +1455,9 @@ static int f2fs_write_compressed_pages(struct compress_ctx *cc,
>  out_destroy_crypt:
>         page_array_free(sbi, cic->rpages, cc->cluster_size);
> 
> +       if (!fio.encrypted)
> +               goto out_put_cic;

Looks fine to me.

Thanks,

> +
>         for (--i; i >= 0; i--) {
>                 if (!cc->cpages[i])
>                         continue;
> 
> 
>>  	}
>>  out_put_cic:
>>  	kmem_cache_free(cic_entry_slab, cic);
>> -- 
>> 2.49.0
>>
>>
>>
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