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| author | Chen, Kenneth W <kenneth.w.chen@intel.com> | 2006-10-11 01:20:46 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-10-11 11:14:15 -0700 |
| commit | 502717f4e112b18d9c37753a32f675bec9f2838b (patch) | |
| tree | 90e674229bbd7caa05e740dfe719cf8749d0eb27 /fs/ext4 | |
| parent | 97c7801cd5b0bb6a38c16108a496235474dc6310 (diff) | |
| download | blackbird-op-linux-502717f4e112b18d9c37753a32f675bec9f2838b.tar.gz blackbird-op-linux-502717f4e112b18d9c37753a32f675bec9f2838b.zip | |
[PATCH] hugetlb: fix linked list corruption in unmap_hugepage_range()
commit fe1668ae5bf0145014c71797febd9ad5670d5d05 causes kernel to oops with
libhugetlbfs test suite. The problem is that hugetlb pages can be shared
by multiple mappings. Multiple threads can fight over page->lru in the
unmap path and bad things happen. We now serialize __unmap_hugepage_range
to void concurrent linked list manipulation. Such serialization is also
needed for shared page table page on hugetlb area. This patch will fixed
the bug and also serve as a prepatch for shared page table.
Signed-off-by: Ken Chen <kenneth.w.chen@intel.com>
Cc: Hugh Dickins <hugh@veritas.com>
Cc: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'fs/ext4')
0 files changed, 0 insertions, 0 deletions
