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| author | Roland McGrath <roland@redhat.com> | 2007-02-08 14:20:41 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-02-09 09:25:47 -0800 |
| commit | fa5dc22f8586cc3742413dd05f5cd9e039dfab9e (patch) | |
| tree | 39a97d91e25794f64e3cc03f1d4a8fa2c8ad78d2 /include | |
| parent | a25700a53f715fde30443e737e52310c6d4a311a (diff) | |
| download | kernel-crypto-fa5dc22f8586cc3742413dd05f5cd9e039dfab9e.tar.gz kernel-crypto-fa5dc22f8586cc3742413dd05f5cd9e039dfab9e.tar.xz kernel-crypto-fa5dc22f8586cc3742413dd05f5cd9e039dfab9e.zip | |
[PATCH] Add install_special_mapping
This patch adds a utility function install_special_mapping, for creating a
special vma using a fixed set of preallocated pages as backing, such as for a
vDSO. This consolidates some nearly identical code used for vDSO mapping
reimplemented for different architectures.
Signed-off-by: Roland McGrath <roland@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/mm.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h index 2d2c08d5f47..bb793a4c8e9 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1030,6 +1030,9 @@ extern struct vm_area_struct *copy_vma(struct vm_area_struct **, unsigned long addr, unsigned long len, pgoff_t pgoff); extern void exit_mmap(struct mm_struct *); extern int may_expand_vm(struct mm_struct *mm, unsigned long npages); +extern int install_special_mapping(struct mm_struct *mm, + unsigned long addr, unsigned long len, + unsigned long flags, struct page **pages); extern unsigned long get_unmapped_area(struct file *, unsigned long, unsigned long, unsigned long, unsigned long); |