diff options
author | Paul Mackerras <paulus@samba.org> | 2007-12-10 15:41:22 +1100 |
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committer | Paul Mackerras <paulus@samba.org> | 2007-12-10 15:41:22 +1100 |
commit | b242a60206881559bb3102110048762422e6b74e (patch) | |
tree | 86459efa47b9c3f69d865b4495beede9c4184003 /mm/mmap.c | |
parent | e1fd18656c2963e383d67b7006c0e06c9c1d9c79 (diff) | |
parent | 94545baded0bfbabdc30a3a4cb48b3db479dd6ef (diff) | |
download | blackbird-op-linux-b242a60206881559bb3102110048762422e6b74e.tar.gz blackbird-op-linux-b242a60206881559bb3102110048762422e6b74e.zip |
Merge branch 'linux-2.6'
Diffstat (limited to 'mm/mmap.c')
-rw-r--r-- | mm/mmap.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/mm/mmap.c b/mm/mmap.c index facc1a75bd4f..15678aa6ec73 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -912,6 +912,9 @@ unsigned long do_mmap_pgoff(struct file * file, unsigned long addr, if (!len) return -EINVAL; + if (!(flags & MAP_FIXED)) + addr = round_hint_to_min(addr); + error = arch_mmap_check(addr, len, flags); if (error) return error; @@ -1615,6 +1618,12 @@ static inline int expand_downwards(struct vm_area_struct *vma, */ if (unlikely(anon_vma_prepare(vma))) return -ENOMEM; + + address &= PAGE_MASK; + error = security_file_mmap(0, 0, 0, 0, address, 1); + if (error) + return error; + anon_vma_lock(vma); /* @@ -1622,8 +1631,6 @@ static inline int expand_downwards(struct vm_area_struct *vma, * is required to hold the mmap_sem in read mode. We need the * anon_vma lock to serialize against concurrent expand_stacks. */ - address &= PAGE_MASK; - error = 0; /* Somebody else might have raced and expanded it already */ if (address < vma->vm_start) { @@ -1934,6 +1941,10 @@ unsigned long do_brk(unsigned long addr, unsigned long len) if (is_hugepage_only_range(mm, addr, len)) return -EINVAL; + error = security_file_mmap(0, 0, 0, 0, addr, 1); + if (error) + return error; + flags = VM_DATA_DEFAULT_FLAGS | VM_ACCOUNT | mm->def_flags; error = arch_mmap_check(addr, len, flags); |