Messages in this thread Patch in this message | | | Date | Wed, 03 Oct 2007 20:59:47 -0700 | From | Christoph Lameter <> | Subject | [12/18] Wait: Allow bit_waitqueue to wait on a bit in a virtual compound page |
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If bit waitqueue is passed a virtual address then it must use virt_to_head_page instead of virt_to_page.
Signed-off-by: Christoph Lameter <clameter@sgi.com>
--- kernel/wait.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
Index: linux-2.6/kernel/wait.c =================================================================== --- linux-2.6.orig/kernel/wait.c 2007-10-03 17:44:21.000000000 -0700 +++ linux-2.6/kernel/wait.c 2007-10-03 17:53:07.000000000 -0700 @@ -245,7 +245,7 @@ EXPORT_SYMBOL(wake_up_bit); fastcall wait_queue_head_t *bit_waitqueue(void *word, int bit) { const int shift = BITS_PER_LONG == 32 ? 5 : 6; - const struct zone *zone = page_zone(virt_to_page(word)); + const struct zone *zone = page_zone(virt_to_head_page(word)); unsigned long val = (unsigned long)word << shift | bit; return &zone->wait_table[hash_long(val, zone->wait_table_bits)]; -- - 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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