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| author | Mike Snitzer <snitzer@redhat.com> | 2014-02-19 20:32:33 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-03-06 22:06:30 -0800 |
| commit | da723a73aef66345a9c69253666d8c9b52deec9c (patch) | |
| tree | 09a0b5a570746d77e47f734c5895d46cd15cc99d | |
| parent | 5a6ffcbbf827518ada88e9ac38ae88c6709a6c87 (diff) | |
| download | lwn-da723a73aef66345a9c69253666d8c9b52deec9c.tar.gz lwn-da723a73aef66345a9c69253666d8c9b52deec9c.zip | |
dm thin: fix the error path for the thin device constructor
commit 1acacc0784aab45627b6009e0e9224886279ac0b upstream.
dm_pool_close_thin_device() must be called if dm_set_target_max_io_len()
fails in thin_ctr(). Otherwise __pool_destroy() will fail because the
pool will still have an open thin device:
device-mapper: thin metadata: attempt to close pmd when 1 device(s) are still open
device-mapper: thin: __pool_destroy: dm_pool_metadata_close() failed.
Also, must establish error code if failing thin_ctr() because the pool
is in fail_io mode.
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Acked-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/md/dm-thin.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c index f406b0168962..e9587101b04f 100644 --- a/drivers/md/dm-thin.c +++ b/drivers/md/dm-thin.c @@ -2848,6 +2848,7 @@ static int thin_ctr(struct dm_target *ti, unsigned argc, char **argv) if (get_pool_mode(tc->pool) == PM_FAIL) { ti->error = "Couldn't open thin device, Pool is in fail mode"; + r = -EINVAL; goto bad_thin_open; } @@ -2859,7 +2860,7 @@ static int thin_ctr(struct dm_target *ti, unsigned argc, char **argv) r = dm_set_target_max_io_len(ti, tc->pool->sectors_per_block); if (r) - goto bad_thin_open; + goto bad_target_max_io_len; ti->num_flush_bios = 1; ti->flush_supported = true; @@ -2880,6 +2881,8 @@ static int thin_ctr(struct dm_target *ti, unsigned argc, char **argv) return 0; +bad_target_max_io_len: + dm_pool_close_thin_device(tc->td); bad_thin_open: __pool_dec(tc->pool); bad_pool_lookup: |