proc: use "unsigned int" for /proc/*/stack

struct stack_trace::nr_entries is defined as "unsigned int" (YAY!) so
the iterator should be unsigned as well.

It saves 1 byte of code or something like that.

Link: http://lkml.kernel.org/r/20180423215248.GG9043@avx2
Signed-off-by: Alexey Dobriyan <[email protected]>
Reviewed-by: Andrew Morton <[email protected]>
Cc: Al Viro <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

diff --git a/fs/proc/base.c b/fs/proc/base.c
index 720205aa1e34732de915e1045191666f05f9a577..44dec22e5e9e61e2f6b90befec5a5355ac6676f9 100644 (file)
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -401,7 +401,6 @@ static int proc_pid_stack(struct seq_file *m, struct pid_namespace *ns,
        struct stack_trace trace;
        unsigned long *entries;
        int err;
-       int i;
 
        entries = kmalloc(MAX_STACK_TRACE_DEPTH * sizeof(*entries), GFP_KERNEL);
        if (!entries)
@@ -414,6 +413,8 @@ static int proc_pid_stack(struct seq_file *m, struct pid_namespace *ns,
 
        err = lock_trace(task);
        if (!err) {
+               unsigned int i;
+
                save_stack_trace_tsk(task, &trace);
 
                for (i = 0; i < trace.nr_entries; i++) {