[lustre-devel] [PATCH v2] staging: lustre: Fix sparse endianness warnings cast to restricted __le64 and __le32

Dilger, Andreas andreas.dilger at intel.com
Tue Apr 18 02:54:05 PDT 2017


On Apr 15, 2017, at 18:48, skanda.kashyap at gmail.com wrote:
> 
> From: Skanda Guruanand <skanda.kashyap at gmail.com>
> 
> The struct lu_dirpage elements in lustre_idl.h file are modified to
> __le64 and __le32 types since the  elements are always converted from
> litte endian to processor native format in mdc_request.c file.
> 
> Following warnings are removed by this fix.
> 
> drivers/staging/lustre/lustre/mdc/mdc_request.c:958:42: warning: cast to restricted __le64
> drivers/staging/lustre/lustre/mdc/mdc_request.c:959:42: warning: cast to restricted __le64
> drivers/staging/lustre/lustre/mdc/mdc_request.c:962:42: warning: cast to restricted __le64
> drivers/staging/lustre/lustre/mdc/mdc_request.c:963:42: warning: cast to restricted __le64
> drivers/staging/lustre/lustre/mdc/mdc_request.c:985:50: warning: cast to restricted __le32
> drivers/staging/lustre/lustre/mdc/mdc_request.c:1193:24: warning: cast to restricted __le64
> drivers/staging/lustre/lustre/mdc/mdc_request.c:1328:25: warning: cast to restricted __le64
> drivers/staging/lustre/lustre/mdc/mdc_request.c:1329:23: warning: cast to restricted __le64
> drivers/staging/lustre/lustre/mdc/mdc_request.c:1332:25: warning: cast to restricted __le64
> drivers/staging/lustre/lustre/mdc/mdc_request.c:1333:23: warning: cast to restricted __le64
> 
> Signed-off-by: Skanda Guruanand <skanda.kashyap at gmail.com>

Thanks for the patch.

The resend of this patch should really have been marked "[PATCH v3]", but hopefully Greg
will still notice this one.

Reviewed-by: Andreas Dilger <andreas.dilger at intel.com>

> ---
> drivers/staging/lustre/lustre/include/lustre/lustre_idl.h | 8 ++++----
> 1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/staging/lustre/lustre/include/lustre/lustre_idl.h b/drivers/staging/lustre/lustre/include/lustre/lustre_idl.h
> index 60b827e..df48b8d 100644
> --- a/drivers/staging/lustre/lustre/include/lustre/lustre_idl.h
> +++ b/drivers/staging/lustre/lustre/include/lustre/lustre_idl.h
> @@ -846,10 +846,10 @@ struct luda_type {
> #endif
> 
> struct lu_dirpage {
> -	__u64	    ldp_hash_start;
> -	__u64	    ldp_hash_end;
> -	__u32	    ldp_flags;
> -	__u32	    ldp_pad0;
> +	__le64	    ldp_hash_start;
> +	__le64	    ldp_hash_end;
> +	__le32	    ldp_flags;
> +	__le32	    ldp_pad0;
> 	struct lu_dirent ldp_entries[0];
> };
> 
> -- 
> 1.9.1
> 

Cheers, Andreas
--
Andreas Dilger
Lustre Principal Architect
Intel Corporation









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