On 2025/4/30 11:20, Matthew Wilcox wrote:
> On Wed, Apr 30, 2025 at 09:13:01AM +0800, Zhang Yi wrote:
>> From: Zhang Yi <yi.zhang@xxxxxxxxxx>
>>
>> The inode i_size cannot be larger than maxbytes, check it while loading
>> inode from the disk.
>
> With this patch, why do we need patch 1?
The max_end in ext4_punch_hole() is maxbytes - blocksize. Therefore,
without the patch 1, it is still possible to encounter a negative
length if the offset exceeds max_end but is less than an i_size that
also exceeds max_end.
max_end i_size max_bytes
| | |
0------------------------------------
|
offset
Thanks,
Yi.
