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Date:   Fri, 18 Mar 2022 13:26:50 +0800
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Subject: Re: [Linux-cachefs] [PATCH v5 10/22] erofs: add mode checking helper
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To:     dhowells@redhat.com, linux-cachefs@redhat.com, xiang@kernel.org,
        chao@kernel.org, linux-erofs@lists.ozlabs.org,
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References: <20220316131723.111553-1-jefflexu@linux.alibaba.com>
 <20220316131723.111553-11-jefflexu@linux.alibaba.com>
 <YjLI0cCcxtg/rEHj@B-P7TQMD6M-0146.local>
From:   JeffleXu <jefflexu@linux.alibaba.com>
In-Reply-To: <YjLI0cCcxtg/rEHj@B-P7TQMD6M-0146.local>
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On 3/17/22 1:36 PM, Gao Xiang wrote:
> On Wed, Mar 16, 2022 at 09:17:11PM +0800, Jeffle Xu wrote:
>> Until then erofs is exactly blockdev based filesystem. In other using
>> scenarios (e.g. container image), erofs needs to run upon files.
>>
>> This patch set is going to introduces a new nodev mode, in which erofs
>> could be mounted from a bootstrap blob file containing complete erofs
>> image.
>>
>> Add a helper checking which mode erofs works in.
>>
>> Signed-off-by: Jeffle Xu <jefflexu@linux.alibaba.com>
>> ---
>>  fs/erofs/internal.h | 5 +++++
>>  1 file changed, 5 insertions(+)
>>
>> diff --git a/fs/erofs/internal.h b/fs/erofs/internal.h
>> index e424293f47a2..f66af9ebda43 100644
>> --- a/fs/erofs/internal.h
>> +++ b/fs/erofs/internal.h
>> @@ -161,6 +161,11 @@ struct erofs_sb_info {
>>  #define set_opt(opt, option)	((opt)->mount_opt |= EROFS_MOUNT_##option)
>>  #define test_opt(opt, option)	((opt)->mount_opt & EROFS_MOUNT_##option)
>>  
>> +static inline bool erofs_bdev_mode(struct super_block *sb)
> 
> How about renaming it as erofs_is_nodev_mode()?

Sure, will be renamed in the next version.


-- 
Thanks,
Jeffle