Messages in this thread Patch in this message | | | Date | Wed, 3 Sep 2003 15:40:45 +0100 | From | Jamie Lokier <> | Subject | [PATCH 2] Little fixes to previous futex patch |
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Patch name: futex-nonlinear-2.6.0-test4-02jl Depends on: futex-fixes-2.6.0-test4-01jl
This fixes a couple of bugs in the previous patch:
1. A typo in futex.c. It affects the FUTEX_REQUEUE operation, which is a fairly recent addition.
2. VM_NONLINEAR would not be set under some conditions when it should be. The bug only affected futexes on non-linear shared mappings.
Enjoy, -- Jamie
diff -urN --exclude-from=dontdiff futex1-2.6.0-test4/kernel/futex.c futex2-2.6.0-test4/kernel/futex.c --- futex1-2.6.0-test4/kernel/futex.c 2003-09-03 12:48:59.000000000 +0100 +++ futex2-2.6.0-test4/kernel/futex.c 2003-09-03 12:56:03.000000000 +0100 @@ -224,7 +224,7 @@ down_read(¤t->mm->mmap_sem); - ret = __get_page_keys(uaddr2 - offset1, keys1); + ret = __get_page_keys(uaddr1 - offset1, keys1); if (unlikely(ret != 0)) goto out; ret = __get_page_keys(uaddr2 - offset2, keys2); diff -urN --exclude-from=dontdiff futex1-2.6.0-test4/mm/fremap.c futex2-2.6.0-test4/mm/fremap.c --- futex1-2.6.0-test4/mm/fremap.c 2003-09-03 12:29:36.000000000 +0100 +++ futex2-2.6.0-test4/mm/fremap.c 2003-09-03 13:02:35.000000000 +0100 @@ -153,9 +153,9 @@ end > start && start >= vma->vm_start && end <= vma->vm_end) { - if (start != vma->vm_start || end != vma->vm_end) - vma->vm_flags |= VM_NONLINEAR; - else + vma->vm_flags |= VM_NONLINEAR; + if (start == vma->vm_start && end == vma->vm_end && + pgoff == vma->vm_pgoff) vma->vm_flags &= ~VM_NONLINEAR; err = vma->vm_ops->populate(vma, start, size, vma->vm_page_prot, - 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/
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