diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/md/dm-crypt.c | 31 |
1 files changed, 5 insertions, 26 deletions
diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c index 8216a6f..64fee90 100644 --- a/drivers/md/dm-crypt.c +++ b/drivers/md/dm-crypt.c @@ -441,33 +441,12 @@ static struct bio *crypt_alloc_buffer(struct dm_crypt_io *io, unsigned size) return clone; } -static void crypt_free_buffer_pages(struct crypt_config *cc, - struct bio *clone, unsigned int bytes) +static void crypt_free_buffer_pages(struct crypt_config *cc, 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); @@ -519,7 +498,7 @@ static void crypt_endio(struct bio *clone, int error) * free the processed pages */ if (!read_io) { - crypt_free_buffer_pages(cc, clone, clone->bi_size); + crypt_free_buffer_pages(cc, clone); goto out; } @@ -608,7 +587,7 @@ static void process_write(struct dm_crypt_io *io) 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); dec_pending(io, -EIO); return; |