diff options
| author | Christoph Hellwig <hch@lst.de> | 2017-04-26 09:40:37 +0200 |
|---|---|---|
| committer | Mike Snitzer <snitzer@redhat.com> | 2017-05-01 18:19:03 -0400 |
| commit | 7ed8578a96ad98231d8bf6388f776e034673e18a (patch) | |
| tree | 91d1d822e1e9c1e04343486df3860b93b9c57836 /drivers/md/dm-mpath.c | |
| parent | b79f10eefd4bc450a595b93c75e3a9d159ac3885 (diff) | |
dm rq: change ->rq_end_io calling conventions
Instead of returning either a DM_ENDIO_* constant or an error code, add
a new DM_ENDIO_DONE value that means keep errno as is. This allows us
to easily keep the existing error code in case where we can't push back,
and it also preparares for the new block level status codes with strict
type checking.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'drivers/md/dm-mpath.c')
| -rw-r--r-- | drivers/md/dm-mpath.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/drivers/md/dm-mpath.c b/drivers/md/dm-mpath.c index 8b394a08d427..926a6bcb32c8 100644 --- a/drivers/md/dm-mpath.c +++ b/drivers/md/dm-mpath.c @@ -1469,6 +1469,7 @@ static int multipath_end_io(struct dm_target *ti, struct request *clone, { struct dm_mpath_io *mpio = get_mpio(map_context); struct pgpath *pgpath = mpio->pgpath; + int r = DM_ENDIO_DONE; /* * We don't queue any clone request inside the multipath target @@ -1484,14 +1485,18 @@ static int multipath_end_io(struct dm_target *ti, struct request *clone, if (error && !noretry_error(error)) { struct multipath *m = ti->private; - error = DM_ENDIO_REQUEUE; + r = DM_ENDIO_REQUEUE; if (pgpath) fail_path(pgpath); if (atomic_read(&m->nr_valid_paths) == 0 && - !test_bit(MPATHF_QUEUE_IF_NO_PATH, &m->flags)) - error = dm_report_EIO(m); + !test_bit(MPATHF_QUEUE_IF_NO_PATH, &m->flags)) { + if (error == -EIO) + error = dm_report_EIO(m); + /* complete with the original error */ + r = DM_ENDIO_DONE; + } } if (pgpath) { @@ -1501,7 +1506,7 @@ static int multipath_end_io(struct dm_target *ti, struct request *clone, ps->type->end_io(ps, &pgpath->path, mpio->nr_bytes); } - return error; + return r; } static int do_end_io_bio(struct multipath *m, struct bio *clone, |