fuse: Convert to kstrtoul_from_user

This patch replaces the code for getting an number from a
userspace buffer by a simple call to kstroul_from_user.
This makes it easier to read and less error prone.

Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>

1 files changed, 2 insertions, 8 deletions

diff --git a/fs/fuse/control.c b/fs/fuse/control.c
index 42593c587d48..03ff5b1eba93 100644
--- a/fs/fuse/control.c
+++ b/fs/fuse/control.c
@@ -75,19 +75,13 @@ static ssize_t fuse_conn_limit_write(struct file *file, const char __user *buf,
                                      unsigned global_limit)
 {
         unsigned long t;
-        char tmp[32];
         unsigned limit = (1 << 16) - 1;
         int err;
 
-        if (*ppos || count >= sizeof(tmp) - 1)
-                return -EINVAL;
-
-        if (copy_from_user(tmp, buf, count))
+        if (*ppos)
                 return -EINVAL;
 
-        tmp[count] = '\0';
-
-        err = strict_strtoul(tmp, 0, &t);
+        err = kstrtoul_from_user(buf, count, 0, &t);
         if (err)
                 return err;