Re: [f2fs-dev] [PATCH v7 10/12] f2fs: cache: support fault injection

[Chao Yu <chao@kernel.org>]

On 9/14/26 17:35, Zhiguo Niu wrote:
> Chao Yu via Linux-f2fs-devel <linux-f2fs-devel@lists.sourceforge.net>
> 于2026年9月12日周六 07:28写道：
>>
>> From: Chao Yu <chao@kernel.org>
>>
>> This patch adds fault injection support for metadata cache allocations
>> to improve error-path test coverage.
>> - it integrates entry allocations with FAULT_KALLOC
> FAULT_KALLOC ->  FAULT_KMALLOC?

Will fix.

Thanks,

>>
>> Signed-off-by: Chao Yu <chao@kernel.org>
>> ---
>>   fs/f2fs/cache.c | 24 ++++++++++++++----------
>>   1 file changed, 14 insertions(+), 10 deletions(-)
>>
>> diff --git a/fs/f2fs/cache.c b/fs/f2fs/cache.c
>> index 7260c157654b..dcab0f321730 100644
>> --- a/fs/f2fs/cache.c
>> +++ b/fs/f2fs/cache.c
>> @@ -154,23 +154,27 @@ static struct f2fs_cached_block *f2fs_create_cache(
>>                  struct f2fs_cached_block_list *cache,
>>                  unsigned long index, bool nofail)
>>   {
>> +       struct f2fs_sb_info *sbi = cache->sbi;
>>          struct f2fs_cached_block *entry;
>>          unsigned int flags = GFP_NOFS;
>>
>>          if (index == ULONG_MAX)
>>                  return ERR_PTR(-ERANGE);
>>
>> -       if (nofail)
>> +       if (nofail) {
>>                  flags |= __GFP_NOFAIL;
>> -
>> -       entry = kzalloc_obj(*entry, flags);
>> -       if (!entry)
>> -               return ERR_PTR(-ENOMEM);
>> -
>> -       entry->data = kmalloc(cache->sbi->blocksize, flags);
>> -       if (!entry->data) {
>> -               kfree(entry);
>> -               return ERR_PTR(-ENOMEM);
>> +               entry = kzalloc_obj(*entry, flags);
>> +               entry->data = kmalloc(sbi->blocksize, flags);
>> +       } else {
>> +               entry = f2fs_kzalloc(sbi, sizeof(*entry), flags);
>> +               if (!entry)
>> +                       return ERR_PTR(-ENOMEM);
>> +
>> +               entry->data = f2fs_kmalloc(sbi, sbi->blocksize, flags);
>> +               if (!entry->data) {
>> +                       kfree(entry);
>> +                       return ERR_PTR(-ENOMEM);
>> +               }
>>          }
>>
>>          entry->index = index;
>> --
>> 2.49.0
>>
>>
>>
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