[patch 07/86] fs/proc/generic.c: delete useless "len" variable

Andrew Morton
2019-12-05T00:50:05Z

From: Alexey Dobriyan <adobriyan@gmail.com>
Subject: fs/proc/generic.c: delete useless "len" variable

Pointer to next '/' encodes length of path element and next start position.
Subtraction and increment are redundant.

Link: http://lkml.kernel.org/r/20191004234521.GA30246@avx2
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

fs/proc/generic.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)

--- a/fs/proc/generic.c~proc-delete-useless-len-variable
+++ a/fs/proc/generic.c
@@ -163,7 +163,6 @@ static int __xlate_proc_name(const char
{
const char *cp = name, *next;
struct proc_dir_entry *de;
- unsigned int len;

de = *ret;
if (!de)
@@ -174,13 +173,12 @@ static int __xlate_proc_name(const char
if (!next)
break;

- len = next - cp;
- de = pde_subdir_find(de, cp, len);
+ de = pde_subdir_find(de, cp, next - cp);
if (!de) {
WARN(1, "name '%s'\n", name);
return -ENOENT;
}
- cp += len + 1;
+ cp = next + 1;
}
*residual = cp;
*ret = de;
_