From: Milan Broz Move error code setting outside of crypt_dec_pending function. Use -EIO if crypt_convert_scatterlist() fails. Signed-off-by: Milan Broz Signed-off-by: Alasdair G Kergon --- drivers/md/dm-crypt.c | 36 +++++++++++++++++++++++++----------- 1 files changed, 25 insertions(+), 11 deletions(-) Index: linux-2.6.24/drivers/md/dm-crypt.c =================================================================== --- linux-2.6.24.orig/drivers/md/dm-crypt.c 2008-02-07 13:48:28.000000000 +0000 +++ linux-2.6.24/drivers/md/dm-crypt.c 2008-02-07 13:48:28.000000000 +0000 @@ -456,18 +456,14 @@ static void crypt_free_buffer_pages(stru * One of the bios was finished. Check for completion of * the whole request and correctly clean up the buffer. */ -static void crypt_dec_pending(struct dm_crypt_io *io, int error) +static void crypt_dec_pending(struct dm_crypt_io *io) { - struct crypt_config *cc = (struct crypt_config *) io->target->private; - - if (error < 0) - io->error = error; + struct crypt_config *cc = io->target->private; if (!atomic_dec_and_test(&io->pending)) return; bio_endio(io->base_bio, io->error); - mempool_free(io, cc->io_pool); } @@ -530,7 +526,11 @@ static void crypt_endio(struct bio *clon out: bio_put(clone); - crypt_dec_pending(io, error); + + if (unlikely(error)) + io->error = error; + + crypt_dec_pending(io); } static void clone_init(struct dm_crypt_io *io, struct bio *clone) @@ -560,7 +560,8 @@ static void process_read(struct dm_crypt */ clone = bio_alloc_bioset(GFP_NOIO, bio_segments(base_bio), cc->bs); if (unlikely(!clone)) { - crypt_dec_pending(io, -ENOMEM); + io->error = -ENOMEM; + crypt_dec_pending(io); return; } @@ -594,7 +595,8 @@ static void process_write(struct dm_cryp while (remaining) { clone = crypt_alloc_buffer(io, remaining); if (unlikely(!clone)) { - crypt_dec_pending(io, -ENOMEM); + io->error = -ENOMEM; + crypt_dec_pending(io); return; } @@ -604,7 +606,8 @@ static void process_write(struct dm_cryp if (unlikely(crypt_convert(cc, &io->ctx) < 0)) { crypt_free_buffer_pages(cc, clone); bio_put(clone); - crypt_dec_pending(io, -EIO); + io->error = -EIO; + crypt_dec_pending(io); return; } @@ -631,14 +634,25 @@ static void process_write(struct dm_cryp } } +static void crypt_read_done(struct dm_crypt_io *io, int error) +{ + if (unlikely(error < 0)) + io->error = -EIO; + + crypt_dec_pending(io); +} + static void process_read_endio(struct dm_crypt_io *io) { struct crypt_config *cc = io->target->private; + int r = 0; crypt_convert_init(cc, &io->ctx, io->base_bio, io->base_bio, io->base_bio->bi_sector - io->target->begin); - crypt_dec_pending(io, crypt_convert(cc, &io->ctx)); + r = crypt_convert(cc, &io->ctx); + + crypt_read_done(io, r); } static void kcryptd_do_work(struct work_struct *work)