diff options
| author | David Gibson <david@gibson.dropbear.id.au> | 2005-01-09 15:46:04 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-01-09 15:46:04 -0800 |
| commit | 3025e38282f760375d7a55645dcd020548a1338d (patch) | |
| tree | 21352dc387aa2f9c3ab94668c31bd8bb714fcffe /arch | |
| parent | 11d7829025bddd70d592061728e62e0419de0349 (diff) | |
| download | history-3025e38282f760375d7a55645dcd020548a1338d.tar.gz | |
[PATCH] ppc64: hugepage bugfix
Fix a stupid unbalanced lock bug in the ppc64 hugepage code. Lead
rapidly to a crash if both CONFIG_HUGETLB_PAGE and CONFIG_PREEMPT were
enabled (even without actually using hugepages at all).
Signed-off-by: David Gibson <dwg@au1.ibm.com>
Acked-by: William Irwin <wli@holomorphy.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/ppc64/mm/hugetlbpage.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/ppc64/mm/hugetlbpage.c b/arch/ppc64/mm/hugetlbpage.c index 7b6b074a461d6c..12b3def68f3dc6 100644 --- a/arch/ppc64/mm/hugetlbpage.c +++ b/arch/ppc64/mm/hugetlbpage.c @@ -745,7 +745,7 @@ void hugetlb_mm_free_pgd(struct mm_struct *mm) pgdir = mm->context.huge_pgdir; if (! pgdir) - return; + goto out; mm->context.huge_pgdir = NULL; @@ -768,6 +768,7 @@ void hugetlb_mm_free_pgd(struct mm_struct *mm) BUG_ON(memcmp(pgdir, empty_zero_page, PAGE_SIZE)); kmem_cache_free(zero_cache, pgdir); + out: spin_unlock(&mm->page_table_lock); } |