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List:       linux-ide
Subject:    Re: [PATCH][V2] libata: make const arrays static, reduces object code size
From:       Sergei Shtylyov <sergei.shtylyov () cogentembedded ! com>
Date:       2017-09-18 16:54:35
Message-ID: 5dd9e5be-22c3-f2c3-9a55-ac44591600fe () cogentembedded ! com
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Hello!

On 09/18/2017 04:32 PM, Colin King wrote:

> From: Colin Ian King <colin.king@canonical.com>
> 
> Don't populate const arrays on the stack, instead make them static.
> Makes the object code smaller by over 260 bytes:
> 
> Signed-off-by: Colin Ian King <colin.king@canonical.com>
> ---
>   drivers/ata/libata-scsi.c  | 10 +++++-----
>   fs/ocfs2/dlm/dlmrecovery.c |  1 -
>   2 files changed, 5 insertions(+), 6 deletions(-)
[...]
> diff --git a/fs/ocfs2/dlm/dlmrecovery.c b/fs/ocfs2/dlm/dlmrecovery.c
> index 74407c6dd592..31a61e8e0152 100644
> --- a/fs/ocfs2/dlm/dlmrecovery.c
> +++ b/fs/ocfs2/dlm/dlmrecovery.c
> @@ -1129,7 +1129,6 @@ static int dlm_send_mig_lockres_msg(struct dlm_ctxt *dlm,
>   		(mres->num_locks * sizeof(struct dlm_migratable_lock));
>   
>   	/* add an all-done flag if we reached the last lock */
> -	orig_flags = mres->flags;

    What's that? :-/

>   	BUG_ON(total_locks > mres_total_locks);
>   	if (total_locks == mres_total_locks)
>   		mres->flags |= DLM_MRES_ALL_DONE;

MBR, Sergei
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