[PATCH 3/4] fs: Use dedicated helper to access rlimit value

[Krzysztof Opasiak]

Use rlimit() helper instead of manually writing whole
chain from current task to rlim_cur

Signed-off-by: Krzysztof Opasiak <k.opas...@samsung.com>
---
 fs/exec.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/fs/exec.c b/fs/exec.c
index 904199086490..964e34e307df 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -221,7 +221,6 @@ static struct page *get_arg_page(struct linux_binprm *bprm, 
unsigned long pos,
        if (write) {
                unsigned long size = bprm->vma->vm_end - bprm->vma->vm_start;
                unsigned long ptr_size;
-               struct rlimit *rlim;
 
                /*
                 * Since the stack will hold pointers to the strings, we
@@ -256,8 +255,7 @@ static struct page *get_arg_page(struct linux_binprm *bprm, 
unsigned long pos,
                 *  - the program will have a reasonable amount of stack left
                 *    to work from.
                 */
-               rlim = current->signal->rlim;
-               if (size > READ_ONCE(rlim[RLIMIT_STACK].rlim_cur) / 4)
+               if (size > rlimit(RLIMIT_STACK) / 4)
                        goto fail;
        }
 
-- 
2.9.3