[prev in list] [next in list] [prev in thread] [next in thread] 

List:       linux-ext4
Subject:    Re: [PATCH v4 1/9] statx: add direct I/O alignment information
From:       "Martin K. Petersen" <martin.petersen () oracle ! com>
Date:       2022-07-22 17:31:37
Message-ID: yq1fsitjbqn.fsf () ca-mkp ! ca ! oracle ! com
[Download RAW message or body]


Eric,

> Therefore, let's expose this information via statx().  Add the
> STATX_DIOALIGN flag and two new statx fields associated with it:
>
> * stx_dio_mem_align: the alignment (in bytes) required for user memory
>   buffers for DIO, or 0 if DIO is not supported on the file.
>
> * stx_dio_offset_align: the alignment (in bytes) required for file
>   offsets and I/O segment lengths for DIO, or 0 if DIO is not supported
>   on the file.  This will only be nonzero if stx_dio_mem_align is
>   nonzero, and vice versa.

Nice to finally have a generic interface for this!

Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>

-- 
Martin K. Petersen	Oracle Linux Engineering
[prev in list] [next in list] [prev in thread] [next in thread]