diff options
| author | Andrew Morton <akpm@osdl.org> | 2003-12-29 23:47:37 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@home.osdl.org> | 2003-12-29 23:47:37 -0800 |
| commit | eb372d22cb6676e7f00a33889774b094392342a2 (patch) | |
| tree | 6d824304e9567b9fec64f83d9a133a3d3b22a526 /ipc/msg.c | |
| parent | 17095c0720d64ca64d090bb4ac553c79dc9c4778 (diff) | |
[PATCH] hugepage pagetable freeing fix
From: "Seth, Rohit" <rohit.seth@intel.com>
We recently covered a bug in mm/mmap.c on IA-64. While unmapping a address
space, unmap_region calls free_pgtables to possibly free the pages that are
used for page tables. Currently no distinction is made between freeing a
region that is mapped by normal pages vs the pages that are mapped by
hugepages. Architecture specific code needs to handle cases where PTEs
corresponding to a region that is mapped by hugepages is properly getting
unmapped. Attached please find a patch that makes the required changes in
generic part of kernel. We will need to send a separate IA-64 patch to use
this new semantics. Currently, so not to disturb the PPC (as that is the
only arch that had ARCH_HAS_HUGEPAGE_ONLY_RANGE defined) we are mapping back
the definition of new function hugetlb_free_pgtables to free_pgtables.
Diffstat (limited to 'ipc/msg.c')
0 files changed, 0 insertions, 0 deletions