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dm crypt: move error setting outside crypt_dec_pending 

Move error code setting outside of crypt_dec_pending function.
Use -EIO if crypt_convert_scatterlist() fails.

Signed-off-by: Milan Broz <mbroz@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
This commit is contained in:
Milan Broz 2008-02-08 02:10:43 +00:00 committed by Alasdair G Kergon
parent fcd369daa3
commit 5742fd7775
1 changed files with 25 additions and 11 deletions
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36
drivers/md/dm-crypt.c
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@ -456,18 +456,14 @@ static void crypt_free_buffer_pages(struct crypt_config *cc, struct bio *clone)
* 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 *clone, int error)
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_io *io)
*/
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_crypt_io *io)
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_crypt_io *io)
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_crypt_io *io)
}
}
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)