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authorMilan Broz <mbroz@redhat.com>2008-02-08 02:10:43 +0000
committerAlasdair G Kergon <agk@redhat.com>2008-02-08 02:10:43 +0000
commit5742fd77757894ebb5e441afbdac1fb666e782f7 (patch)
tree6976ec2b920b9df1e2316d4603d81a6082a7d42b
parentfcd369daa36d547607dbedd0b41099d6dfc1d1c7 (diff)
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>
-rw-r--r--drivers/md/dm-crypt.c36
1 files changed, 25 insertions, 11 deletions
diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c
index 862ce9f6faa..cc189a2bc53 100644
--- a/drivers/md/dm-crypt.c
+++ b/drivers/md/dm-crypt.c
@@ -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)