Please try with this patch from Neil.
diff .prev/drivers/md/dm-crypt.c ./drivers/md/dm-crypt.c
--- .prev/drivers/md/dm-crypt.c 2007-10-15 17:18:20.000000000 +1000
+++ ./drivers/md/dm-crypt.c 2007-10-15 17:21:43.000000000 +1000
@@ -444,32 +444,12 @@ static struct bio *crypt_alloc_buffer(st
}
static void crypt_free_buffer_pages(struct crypt_config *cc,
- struct bio *clone, unsigned int bytes)
+ struct bio *clone)
{
- unsigned int i, start, end;
+ unsigned int i;
struct bio_vec *bv;
- /*
- * This is ugly, but Jens Axboe thinks that using bi_idx in the
- * endio function is too dangerous at the moment, so I calculate the
- * correct position using bi_vcnt and bi_size.
- * The bv_offset and bv_len fields might already be modified but we
- * know that we always allocated whole pages.
- * A fix to the bi_idx issue in the kernel is in the works, so
- * we will hopefully be able to revert to the cleaner solution soon.
- */
- i = clone->bi_vcnt - 1;
- bv = bio_iovec_idx(clone, i);
- end = (i << PAGE_SHIFT) + (bv->bv_offset + bv->bv_len) - clone->bi_size;
- start = end - bytes;
-
- start >>= PAGE_SHIFT;
- if (!clone->bi_size)
- end = clone->bi_vcnt;
- else
- end >>= PAGE_SHIFT;
-
- for (i = start; i < end; i++) {
+ for (i = 0; i < clone->bi_vcnt; i++) {
bv = bio_iovec_idx(clone, i);
BUG_ON(!bv->bv_page);
mempool_free(bv->bv_page, cc->page_pool);
@@ -539,7 +519,7 @@ static void crypt_endio(struct bio *clon
* free the processed pages
*/
if (!read_io) {
- crypt_free_buffer_pages(cc, clone, clone->bi_size);
+ crypt_free_buffer_pages(cc, clone);
goto out;
}
@@ -628,7 +608,7 @@ static void process_write(struct dm_cryp
ctx.idx_out = 0;
if (unlikely(crypt_convert(cc, &ctx) < 0)) {
- crypt_free_buffer_pages(cc, clone, clone->bi_size);
+ crypt_free_buffer_pages(cc, clone);
bio_put(clone);
crypt_dec_pending(io, -EIO);
return;
...
