[PATCH] fs/jfs: replace ternary operator with min_t()

[PATCH] fs/jfs: replace ternary operator with min_t()

[Jiangshan Yi]

From: Jiangshan Yi <yijiangshan@kylinos.cn>

Fix the following coccicheck warning:

fs/jfs/super.c:748: WARNING opportunity for min().
fs/jfs/super.c:788: WARNING opportunity for min().

min_t() macro is defined in include/linux/minmax.h. It avoids
multiple evaluations of the arguments when non-constant and performs
strict type-checking.

Signed-off-by: Jiangshan Yi <yijiangshan@kylinos.cn>
---
 fs/jfs/super.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/fs/jfs/super.c b/fs/jfs/super.c
index 85d4f44f2ac4..d2f82cb7db1b 100644
--- a/fs/jfs/super.c
+++ b/fs/jfs/super.c
@@ -745,8 +745,7 @@ static ssize_t jfs_quota_read(struct super_block *sb, int type, char *data,
 		len = i_size-off;
 	toread = len;
 	while (toread > 0) {
-		tocopy = sb->s_blocksize - offset < toread ?
-				sb->s_blocksize - offset : toread;
+		tocopy = min_t(size_t, sb->s_blocksize - offset, toread);
 
 		tmp_bh.b_state = 0;
 		tmp_bh.b_size = i_blocksize(inode);
@@ -785,8 +784,7 @@ static ssize_t jfs_quota_write(struct super_block *sb, int type,
 
 	inode_lock(inode);
 	while (towrite > 0) {
-		tocopy = sb->s_blocksize - offset < towrite ?
-				sb->s_blocksize - offset : towrite;
+		tocopy = min_t(size_t, sb->s_blocksize - offset, towrite);
 
 		tmp_bh.b_state = 0;
 		tmp_bh.b_size = i_blocksize(inode);
-- 
2.25.1

Re: [PATCH] fs/jfs: replace ternary operator with min_t()

[Dave Kleikamp]

Catching up on old patches. Sorry this took so long. Looks good to me. 
I'll push it to mainline.

Thanks,
Shaggy

On 7/13/22 9:56PM, Jiangshan Yi wrote:
> From: Jiangshan Yi <yijiangshan@kylinos.cn>
> 
> Fix the following coccicheck warning:
> 
> fs/jfs/super.c:748: WARNING opportunity for min().
> fs/jfs/super.c:788: WARNING opportunity for min().
> 
> min_t() macro is defined in include/linux/minmax.h. It avoids
> multiple evaluations of the arguments when non-constant and performs
> strict type-checking.
> 
> Signed-off-by: Jiangshan Yi <yijiangshan@kylinos.cn>
> ---
>   fs/jfs/super.c | 6 ++----
>   1 file changed, 2 insertions(+), 4 deletions(-)
> 
> diff --git a/fs/jfs/super.c b/fs/jfs/super.c
> index 85d4f44f2ac4..d2f82cb7db1b 100644
> --- a/fs/jfs/super.c
> +++ b/fs/jfs/super.c
> @@ -745,8 +745,7 @@ static ssize_t jfs_quota_read(struct super_block *sb, int type, char *data,
>   		len = i_size-off;
>   	toread = len;
>   	while (toread > 0) {
> -		tocopy = sb->s_blocksize - offset < toread ?
> -				sb->s_blocksize - offset : toread;
> +		tocopy = min_t(size_t, sb->s_blocksize - offset, toread);
>   
>   		tmp_bh.b_state = 0;
>   		tmp_bh.b_size = i_blocksize(inode);
> @@ -785,8 +784,7 @@ static ssize_t jfs_quota_write(struct super_block *sb, int type,
>   
>   	inode_lock(inode);
>   	while (towrite > 0) {
> -		tocopy = sb->s_blocksize - offset < towrite ?
> -				sb->s_blocksize - offset : towrite;
> +		tocopy = min_t(size_t, sb->s_blocksize - offset, towrite);
>   
>   		tmp_bh.b_state = 0;
>   		tmp_bh.b_size = i_blocksize(inode);