2.6.28-stable review patch. If anyone has any objections, please let us know. ------------------ From: Hugh Dickins commit d5b562330ec766292a3ac54ae5e0673610bd5b3d upstream. Commit 27421e211a39784694b597dbf35848b88363c248, Manually revert "mlock: downgrade mmap sem while populating mlocked regions", has introduced its own regression: __mlock_vma_pages_range() may report an error (for example, -EFAULT from trying to lock down pages from beyond EOF), but mlock_vma_pages_range() must hide that from its callers as before. Reported-by: Sami Farin Signed-off-by: Hugh Dickins Signed-off-by: Linus Torvalds --- mm/mlock.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) --- a/mm/mlock.c +++ b/mm/mlock.c @@ -310,7 +310,10 @@ long mlock_vma_pages_range(struct vm_are is_vm_hugetlb_page(vma) || vma == get_gate_vma(current))) { - return __mlock_vma_pages_range(vma, start, end, 1); + __mlock_vma_pages_range(vma, start, end, 1); + + /* Hide errors from mmap() and other callers */ + return 0; } /* -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/