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| author | Alasdair G Kergon <agk@redhat.com> | 2009-12-10 23:52:24 +0000 |
|---|---|---|
| committer | Alasdair G Kergon <agk@redhat.com> | 2009-12-10 23:52:24 +0000 |
| commit | 042d2a9bcd80fe12d4b0871706aa9dd2231e8238 (patch) | |
| tree | 69a7b6675e2cd020807729de50cd99747f6470f4 /drivers/md/dm-ioctl.c | |
| parent | a794015597a2d9b437470c7692aac77e5fc08cd2 (diff) | |
| download | linux-3.10-042d2a9bcd80fe12d4b0871706aa9dd2231e8238.tar.gz linux-3.10-042d2a9bcd80fe12d4b0871706aa9dd2231e8238.tar.bz2 linux-3.10-042d2a9bcd80fe12d4b0871706aa9dd2231e8238.zip | |
dm: keep old table until after resume succeeded
When swapping a new table into place, retain the old table until
its replacement is in place.
An old check for an empty table is removed because this is enforced
in populate_table().
__unbind() becomes redundant when followed by __bind().
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Diffstat (limited to 'drivers/md/dm-ioctl.c')
| -rw-r--r-- | drivers/md/dm-ioctl.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/drivers/md/dm-ioctl.c b/drivers/md/dm-ioctl.c index a3d20265ffc..63fd4de25bd 100644 --- a/drivers/md/dm-ioctl.c +++ b/drivers/md/dm-ioctl.c @@ -855,7 +855,7 @@ static int do_resume(struct dm_ioctl *param) unsigned suspend_flags = DM_SUSPEND_LOCKFS_FLAG; struct hash_cell *hc; struct mapped_device *md; - struct dm_table *new_map; + struct dm_table *new_map, *old_map = NULL; down_write(&_hash_lock); @@ -884,11 +884,11 @@ static int do_resume(struct dm_ioctl *param) if (!dm_suspended(md)) dm_suspend(md, suspend_flags); - r = dm_swap_table(md, new_map); - if (r) { + old_map = dm_swap_table(md, new_map); + if (IS_ERR(old_map)) { dm_table_destroy(new_map); dm_put(md); - return r; + return PTR_ERR(old_map); } if (dm_table_get_mode(new_map) & FMODE_WRITE) @@ -900,6 +900,8 @@ static int do_resume(struct dm_ioctl *param) if (dm_suspended(md)) r = dm_resume(md); + if (old_map) + dm_table_destroy(old_map); if (!r) { dm_kobject_uevent(md, KOBJ_CHANGE, param->event_nr); |