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| author | Christoph Hellwig <hch@lst.de> | 2017-06-03 09:38:01 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2017-06-09 09:27:32 -0600 |
| commit | 14ef1e48269dde9b78efe4b112fa78e9ced72bc1 (patch) | |
| tree | 473613a63d5f714c0b21b65269a590490899e8cc /drivers/md | |
| parent | 36ffc6c1c0e67acdacb53348350d0a37206dbadf (diff) | |
| download | linux-14ef1e48269dde9b78efe4b112fa78e9ced72bc1.tar.gz linux-14ef1e48269dde9b78efe4b112fa78e9ced72bc1.tar.bz2 linux-14ef1e48269dde9b78efe4b112fa78e9ced72bc1.zip | |
dm mpath: merge do_end_io_bio into multipath_end_io_bio
This simplifies the code and especially the error passing a bit and
will help with the next patch.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'drivers/md')
| -rw-r--r-- | drivers/md/dm-mpath.c | 42 |
1 files changed, 15 insertions, 27 deletions
diff --git a/drivers/md/dm-mpath.c b/drivers/md/dm-mpath.c index 3df056b73b66..6d5ebb76149d 100644 --- a/drivers/md/dm-mpath.c +++ b/drivers/md/dm-mpath.c @@ -1510,24 +1510,24 @@ static int multipath_end_io(struct dm_target *ti, struct request *clone, return r; } -static int do_end_io_bio(struct multipath *m, struct bio *clone, - int error, struct dm_mpath_io *mpio) +static int multipath_end_io_bio(struct dm_target *ti, struct bio *clone, int error) { + struct multipath *m = ti->private; + struct dm_mpath_io *mpio = get_mpio_from_bio(clone); + struct pgpath *pgpath = mpio->pgpath; unsigned long flags; - if (!error) - return 0; /* I/O complete */ - - if (noretry_error(error)) - return error; + if (!error || noretry_error(error)) + goto done; - if (mpio->pgpath) - fail_path(mpio->pgpath); + if (pgpath) + fail_path(pgpath); if (atomic_read(&m->nr_valid_paths) == 0 && !test_bit(MPATHF_QUEUE_IF_NO_PATH, &m->flags)) { dm_report_EIO(m); - return -EIO; + error = -EIO; + goto done; } /* Queue for the daemon to resubmit */ @@ -1539,28 +1539,16 @@ static int do_end_io_bio(struct multipath *m, struct bio *clone, if (!test_bit(MPATHF_QUEUE_IO, &m->flags)) queue_work(kmultipathd, &m->process_queued_bios); - return DM_ENDIO_INCOMPLETE; -} - -static int multipath_end_io_bio(struct dm_target *ti, struct bio *clone, int error) -{ - struct multipath *m = ti->private; - struct dm_mpath_io *mpio = get_mpio_from_bio(clone); - struct pgpath *pgpath; - struct path_selector *ps; - int r; - - BUG_ON(!mpio); - - r = do_end_io_bio(m, clone, error, mpio); - pgpath = mpio->pgpath; + error = DM_ENDIO_INCOMPLETE; +done: if (pgpath) { - ps = &pgpath->pg->ps; + struct path_selector *ps = &pgpath->pg->ps; + if (ps->type->end_io) ps->type->end_io(ps, &pgpath->path, mpio->nr_bytes); } - return r; + return error; } /* |