Re: [PATCH] f2fs: report sub-block project quotas in statfs

[Chao Yu <chao@kernel.org>]

On 11/2/26 07:05, Hungyu Lin wrote:
> f2fs_statfs_project() converts the selected block quota from bytes to
> filesystem blocks before checking whether a limit is set. A nonzero
> limit smaller than one filesystem block therefore becomes zero and
> skips the project block statistics.
> 
> For example, on a filesystem with 4 KiB blocks, setquota accepts a
> 1 KiB project hard limit, but df on the project-inherit directory
> reports the filesystem-wide capacity and free space instead of zero
> whole blocks. Quota enforcement still rejects a write that requires
> another data block.
> 
> Check the byte limit before converting it to blocks. This distinguishes
> a sub-block limit from an unlimited quota while retaining the existing
> rounding and free-space calculations.
> 

Cc: stable@vger.kernel.org

> Fixes: ddc34e328d06 ("f2fs: introduce f2fs_statfs_project")
> Signed-off-by: Hungyu Lin <dennylin0707@gmail.com>

Reviewed-by: Chao Yu <chao@kernel.org>

Thanks,