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authorDavid Hildenbrand <david@redhat.com>2021-04-23 10:38:14 +0300
committerDavid Hildenbrand <david@redhat.com>2021-09-03 19:42:01 +0300
commit6128b3af2a5e42386aa7faf37609b57f39fb7d00 (patch)
tree6b563660608582f8b1e50e43ee1df97e6028e611 /mm/nommu.c
parent8d0920bde5eb8ec7e567939b85e65a0596c8580d (diff)
downloadlinux-6128b3af2a5e42386aa7faf37609b57f39fb7d00.tar.xz
mm: ignore MAP_DENYWRITE in ksys_mmap_pgoff()
Let's also remove masking off MAP_DENYWRITE from ksys_mmap_pgoff(): the last in-tree occurrence of MAP_DENYWRITE is now in LEGACY_MAP_MASK, which accepts the flag e.g., for MAP_SHARED_VALIDATE; however, the flag is ignored throughout the kernel now. Add a comment to LEGACY_MAP_MASK stating that MAP_DENYWRITE is ignored. Acked-by: "Eric W. Biederman" <ebiederm@xmission.com> Acked-by: Christian König <christian.koenig@amd.com> Signed-off-by: David Hildenbrand <david@redhat.com>
Diffstat (limited to 'mm/nommu.c')
-rw-r--r--mm/nommu.c2
1 files changed, 0 insertions, 2 deletions
diff --git a/mm/nommu.c b/mm/nommu.c
index 3a93d4054810..0987d131bdfc 100644
--- a/mm/nommu.c
+++ b/mm/nommu.c
@@ -1296,8 +1296,6 @@ unsigned long ksys_mmap_pgoff(unsigned long addr, unsigned long len,
goto out;
}
- flags &= ~MAP_DENYWRITE;
-
retval = vm_mmap_pgoff(file, addr, len, prot, flags, pgoff);
if (file)