diff options
| author | Andrew Morton <akpm@osdl.org> | 2004-04-11 23:16:45 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2004-04-11 23:16:45 -0700 |
| commit | 2039e7b519e24f743a708a5f10bdc95273d1e077 (patch) | |
| tree | af8867ba93a86d4f80b3184789f2eee94172f698 /include/linux | |
| parent | e2ea83742133d581a0422f1b2d276e690a81f043 (diff) | |
[PATCH] mremap: vma_relink_file race fix
From: Hugh Dickins <hugh@veritas.com>
Subtle point from Rajesh Venkatasubramanian: when mremap's move_vma fails and
so rewinds, before moving the file-based ptes back, we must move new_vma
before old vma in the i_mmap or i_mmap_shared list, so that when racing
against vmtruncate we cannot propagate pages to be truncated back from
new_vma into the just cleaned old_vma.
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/mm.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h index 43335c61e0da..6d6abe8c656e 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -543,6 +543,7 @@ extern void __vma_link_rb(struct mm_struct *, struct vm_area_struct *, struct rb_node **, struct rb_node *); extern struct vm_area_struct *copy_vma(struct vm_area_struct *, unsigned long addr, unsigned long len, unsigned long pgoff); +extern void vma_relink_file(struct vm_area_struct *, struct vm_area_struct *); extern void exit_mmap(struct mm_struct *); extern unsigned long get_unmapped_area(struct file *, unsigned long, unsigned long, unsigned long, unsigned long); |