diff options
| author | Hugh Dickins <hugh@veritas.com> | 2005-11-22 00:32:12 -0500 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-11-22 12:13:42 -0500 |
| commit | 83e9b7e929d1323b9a155d186f77aa8c06155cc3 (patch) | |
| tree | 3cad39e867ca337b08bc4a7309c2b17787abd527 /init/do_mounts.h | |
| parent | ed5297a94090d9a9f27b0ce1f9601ebe73561cff (diff) | |
[PATCH] unpaged: private write VM_RESERVED
The PageReserved removal in 2.6.15-rc1 issued a "deprecated" message when you
tried to mmap or mprotect MAP_PRIVATE PROT_WRITE a VM_RESERVED, and failed
with -EACCES: because do_wp_page lacks the refinement to COW pages in those
areas, nor do we expect to find anonymous pages in them; and it seemed just
bloat to add code for handling such a peculiar case. But immediately it
caused vbetool and ddcprobe (using lrmi) to fail.
So revert the "deprecated" messages, letting mmap and mprotect succeed. But
leave do_wp_page's BUG_ON(vma->vm_flags & VM_RESERVED) in place until we've
added the code to do it right: so this particular patch is only good if the
app doesn't really need to write to that private area.
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'init/do_mounts.h')
0 files changed, 0 insertions, 0 deletions