On 2017/10/19 18:58, Colin King wrote:
> From: Colin Ian King <colin.king@xxxxxxxxxxxxx>
>
> There are several assignments to variables that are redundant
> as the values are never read when the variables are updated later
> and so the redundant statements can be safely removed.
>
> Cleans up clang warnings:
> fs/f2fs/segment.c:923:19: warning: Value stored to 'p' during its initialization is never read
> fs/f2fs/segment.c:2060:2: warning: Value stored to 'hint' is never read
> fs/f2fs/segment.c:2353:2: warning: Value stored to 'start_block' is never read
> fs/f2fs/segment.c:2354:2: warning: Value stored to 'end_block' is never read
>
> Signed-off-by: Colin Ian King <colin.king@xxxxxxxxxxxxx>
Reviewed-by: Chao Yu <yuchao0@xxxxxxxxxx>
Thanks,
> ---
> fs/f2fs/segment.c | 6 +-----
> 1 file changed, 1 insertion(+), 5 deletions(-)
>
> diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
> index bfbcff8339c5..df7af294c1e0 100644
> --- a/fs/f2fs/segment.c
> +++ b/fs/f2fs/segment.c
> @@ -920,7 +920,7 @@ static struct discard_cmd *__insert_discard_tree(struct f2fs_sb_info *sbi,
> struct rb_node *insert_parent)
> {
> struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
> - struct rb_node **p = &dcc->root.rb_node;
> + struct rb_node **p;
> struct rb_node *parent = NULL;
> struct discard_cmd *dc = NULL;
>
> @@ -2057,7 +2057,6 @@ static void get_new_segment(struct f2fs_sb_info *sbi,
> }
> secno = left_start;
> skip_left:
> - hint = secno;
> segno = GET_SEG_FROM_SEC(sbi, secno);
> zoneno = GET_ZONE_FROM_SEC(sbi, secno);
>
> @@ -2350,9 +2349,6 @@ int f2fs_trim_fs(struct f2fs_sb_info *sbi, struct fstrim_range *range)
> end_segno = (end >= MAX_BLKADDR(sbi)) ? MAIN_SEGS(sbi) - 1 :
> GET_SEGNO(sbi, end);
>
> - start_block = START_BLOCK(sbi, start_segno);
> - end_block = START_BLOCK(sbi, end_segno + 1);
> -
> cpc.reason = CP_DISCARD;
> cpc.trim_minlen = max_t(__u64, 1, F2FS_BYTES_TO_BLK(range->minlen));
>
>
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