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-rw-r--r--drivers/md/dm.c32
1 files changed, 19 insertions, 13 deletions
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 51ba1db..8d40f27 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -525,9 +525,12 @@ static int __noflush_suspending(struct mapped_device *md)
static void dec_pending(struct dm_io *io, int error)
{
unsigned long flags;
+ int io_error;
+ struct bio *bio;
+ struct mapped_device *md = io->md;
/* Push-back supersedes any I/O errors */
- if (error && !(io->error > 0 && __noflush_suspending(io->md)))
+ if (error && !(io->error > 0 && __noflush_suspending(md)))
io->error = error;
if (atomic_dec_and_test(&io->io_count)) {
@@ -537,24 +540,27 @@ static void dec_pending(struct dm_io *io, int error)
* This must be handled before the sleeper on
* suspend queue merges the pushback list.
*/
- spin_lock_irqsave(&io->md->pushback_lock, flags);
- if (__noflush_suspending(io->md))
- bio_list_add(&io->md->pushback, io->bio);
+ spin_lock_irqsave(&md->pushback_lock, flags);
+ if (__noflush_suspending(md))
+ bio_list_add(&md->pushback, io->bio);
else
/* noflush suspend was interrupted. */
io->error = -EIO;
- spin_unlock_irqrestore(&io->md->pushback_lock, flags);
+ spin_unlock_irqrestore(&md->pushback_lock, flags);
}
end_io_acct(io);
- if (io->error != DM_ENDIO_REQUEUE) {
- trace_block_bio_complete(io->md->queue, io->bio);
+ io_error = io->error;
+ bio = io->bio;
- bio_endio(io->bio, io->error);
- }
+ free_io(md, io);
+
+ if (io_error != DM_ENDIO_REQUEUE) {
+ trace_block_bio_complete(md->queue, bio);
- free_io(io->md, io);
+ bio_endio(bio, io_error);
+ }
}
}
@@ -562,6 +568,7 @@ static void clone_endio(struct bio *bio, int error)
{
int r = 0;
struct dm_target_io *tio = bio->bi_private;
+ struct dm_io *io = tio->io;
struct mapped_device *md = tio->io->md;
dm_endio_fn endio = tio->ti->type->end_io;
@@ -585,15 +592,14 @@ static void clone_endio(struct bio *bio, int error)
}
}
- dec_pending(tio->io, error);
-
/*
* Store md for cleanup instead of tio which is about to get freed.
*/
bio->bi_private = md->bs;
- bio_put(bio);
free_tio(md, tio);
+ bio_put(bio);
+ dec_pending(io, error);
}
static sector_t max_io_len(struct mapped_device *md,
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