| Message ID | 2befe2c13065bdf3ca74cb8b701727940310fd2a.1712126039.git.sweettea-kernel@dorminy.me (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | fiemap extension for more physical information | expand |
On Apr 3, 2024, at 1:22 AM, Sweet Tea Dorminy <sweettea-kernel@dorminy.me> 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@dorminy.me> Looks good. Reviewed-by: Andreas Dilger <adilger@dilger.ca> > --- > 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
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
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@dorminy.me> --- Documentation/filesystems/fiemap.rst | 4 ++++ fs/ioctl.c | 3 ++- include/uapi/linux/fiemap.h | 2 ++ 3 files changed, 8 insertions(+), 1 deletion(-)