Re: [PATCH] fs: FAT: Cleanup string initializations (char[] instead of char *)

From: OGAWA Hirofumi
Date: Sat May 17 2014 - 11:45:32 EST


Manuel Schölling <manuel.schoelling@xxxxxx> writes:

> Initializations like 'char *foo = "bar"' will create two variables: a static
> string and a pointer (foo) to that static string. Instead 'char foo[] = "bar"'
> will declare a single variable and will end up in shorter
> assembly (according to Jeff Garzik on the KernelJanitor's TODO list).
>
> Signed-off-by: Manuel Schölling <manuel.schoelling@xxxxxx>

Looks good.

Acked-by: OGAWA Hirofumi <hirofumi@xxxxxxxxxxxxxxxxxx>

> ---
> fs/fat/inode.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/fs/fat/inode.c b/fs/fat/inode.c
> index b3361fe..8b7d00e 100644
> --- a/fs/fat/inode.c
> +++ b/fs/fat/inode.c
> @@ -359,7 +359,7 @@ struct inode *fat_iget(struct super_block *sb, loff_t i_pos)
>
> static int is_exec(unsigned char *extension)
> {
> - unsigned char *exe_extensions = "EXECOMBAT", *walk;
> + unsigned char exe_extensions[] = "EXECOMBAT", *walk;
>
> for (walk = exe_extensions; *walk; walk += 3)
> if (!strncmp(extension, walk, 3))

--
OGAWA Hirofumi <hirofumi@xxxxxxxxxxxxxxxxxx>
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