On Apr 3, 2024, at 1:22 AM, Sweet Tea Dorminy <sweettea-kernel@xxxxxxxxxx> wrote:
>
> This goes closely with the new physical length field in struct
> fiemap_extent, as when physical length is not equal to logical length
> the reason is frequently compression.
>
> Signed-off-by: Sweet Tea Dorminy <sweettea-kernel@xxxxxxxxxx>
Looks good.
Reviewed-by: Andreas Dilger <adilger@xxxxxxxxx>
> ---
> Documentation/filesystems/fiemap.rst | 4 ++++
> fs/ioctl.c | 3 ++-
> include/uapi/linux/fiemap.h | 2 ++
> 3 files changed, 8 insertions(+), 1 deletion(-)
>
> diff --git a/Documentation/filesystems/fiemap.rst b/Documentation/filesystems/fiemap.rst
> index c060bb83f5d8..16bd7faba5e0 100644
> --- a/Documentation/filesystems/fiemap.rst
> +++ b/Documentation/filesystems/fiemap.rst
> @@ -162,6 +162,10 @@ FIEMAP_EXTENT_DATA_ENCRYPTED
> This will also set FIEMAP_EXTENT_ENCODED
> The data in this extent has been encrypted by the file system.
>
> +FIEMAP_EXTENT_DATA_COMPRESSED
> + This will also set FIEMAP_EXTENT_ENCODED
> + The data in this extent is compressed by the file system.
> +
> FIEMAP_EXTENT_NOT_ALIGNED
> Extent offsets and length are not guaranteed to be block aligned.
>
> diff --git a/fs/ioctl.c b/fs/ioctl.c
> index 1830baca532b..b47e2da7ec17 100644
> --- a/fs/ioctl.c
> +++ b/fs/ioctl.c
> @@ -126,7 +126,8 @@ int fiemap_fill_next_extent(struct fiemap_extent_info *fieinfo, u64 logical,
> return 1;
>
> #define SET_UNKNOWN_FLAGS (FIEMAP_EXTENT_DELALLOC)
> -#define SET_NO_UNMOUNTED_IO_FLAGS (FIEMAP_EXTENT_DATA_ENCRYPTED)
> +#define SET_NO_UNMOUNTED_IO_FLAGS (FIEMAP_EXTENT_DATA_ENCRYPTED|\
> + FIEMAP_EXTENT_DATA_COMPRESSED)
> #define SET_NOT_ALIGNED_FLAGS (FIEMAP_EXTENT_DATA_TAIL|FIEMAP_EXTENT_DATA_INLINE)
>
> if (flags & SET_UNKNOWN_FLAGS)
> diff --git a/include/uapi/linux/fiemap.h b/include/uapi/linux/fiemap.h
> index 3079159b8e94..ea97e33ddbb3 100644
> --- a/include/uapi/linux/fiemap.h
> +++ b/include/uapi/linux/fiemap.h
> @@ -67,6 +67,8 @@ struct fiemap {
> * Sets EXTENT_UNKNOWN. */
> #define FIEMAP_EXTENT_ENCODED 0x00000008 /* Data can not be read
> * while fs is unmounted */
> +#define FIEMAP_EXTENT_DATA_COMPRESSED 0x00000040 /* Data is compressed by fs.
> + * Sets EXTENT_ENCODED. */
> #define FIEMAP_EXTENT_DATA_ENCRYPTED 0x00000080 /* Data is encrypted by fs.
> * Sets EXTENT_NO_BYPASS. */
> #define FIEMAP_EXTENT_NOT_ALIGNED 0x00000100 /* Extent offsets may not be
> --
> 2.43.0
>
>
Cheers, Andreas
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