Re: [PATCH] src/t_stripealign.c: Fix complier error

Darrick J. Wong
2018-06-20T03:30:39Z

On Wed, Jun 20, 2018 at 11:12:00AM +0800, Xiao Yang wrote:
> The FIEMAP_EXTENT_SHARED flag was added into kernel since commit
> 8c0414cd524e, so undefined FIEMAP_EXTENT_SHARED resulted in complier
> error on old distros(e.g. RHEL6), as below:
> ----------------------------------------------------------------------
> t_stripealign.c:99: error: 'FIEMAP_EXTENT_SHARED' undeclared (first use in this function)
> ----------------------------------------------------------------------
>
> We fix it by defining the flag manually.
>
> Signed-off-by: Xiao Yang <yangx.jy@cn.fujitsu.com>

Oops, yeah, sorry about that.

Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>

--D

> ---
> src/t_stripealign.c | 4 ++++
> 1 files changed, 4 insertions(+), 0 deletions(-)
>
> diff --git a/src/t_stripealign.c b/src/t_stripealign.c
> index 690f743..2685d97 100644
> --- a/src/t_stripealign.c
> +++ b/src/t_stripealign.c
> @@ -20,6 +20,10 @@
> #include <linux/fiemap.h>
> #include <linux/fs.h>
>
> +#ifndef FIEMAP_EXTENT_SHARED
> +# define FIEMAP_EXTENT_SHARED 0x00002000
> +#endif
> +
> #define FIEMAP_EXTENT_ACCEPTABLE (FIEMAP_EXTENT_LAST | \
> FIEMAP_EXTENT_DATA_ENCRYPTED | FIEMAP_EXTENT_ENCODED | \
> FIEMAP_EXTENT_UNWRITTEN | FIEMAP_EXTENT_MERGED | \
> --
> 1.7.1
>
>
>