mmap: EINVAL not ENOMEM when rejecting VM_GROWS

Currently error is -ENOMEM when rejecting VM_GROWSDOWN|VM_GROWSUP
from shared anonymous: hoist the file case's -EINVAL up for both.

Signed-off-by: Hugh Dickins <hughd@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/mm/mmap.c b/mm/mmap.c
index 56a644f..f5762ea 100644 (file)
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -1271,8 +1271,9 @@ munmap_back:
        vma->vm_pgoff = pgoff;
        INIT_LIST_HEAD(&vma->anon_vma_chain);
 
+       error = -EINVAL;        /* when rejecting VM_GROWSDOWN|VM_GROWSUP */
+
        if (file) {
-               error = -EINVAL;
                if (vm_flags & (VM_GROWSDOWN|VM_GROWSUP))
                        goto free_vma;
                if (vm_flags & VM_DENYWRITE) {