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| author | Joe Thornber <ejt@redhat.com> | 2012-07-27 15:08:15 +0100 |
|---|---|---|
| committer | Alasdair G Kergon <agk@redhat.com> | 2012-07-27 15:08:15 +0100 |
| commit | 12ba58af46e5973822f1cfaaf5f29a2a17a523bf (patch) | |
| tree | 4641ca8730db9c61a34052cf267765305323b896 /drivers/md/dm-thin-metadata.h | |
| parent | 310975573ba40ab526b0d76d28225d8d0999d72b (diff) | |
| download | lwn-12ba58af46e5973822f1cfaaf5f29a2a17a523bf.tar.gz lwn-12ba58af46e5973822f1cfaaf5f29a2a17a523bf.zip | |
dm thin metadata: introduce dm_pool_metadata_set_read_only
Introduce dm_pool_metadata_set_read_only to put the underlying block
manager into read-only mode.
Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Diffstat (limited to 'drivers/md/dm-thin-metadata.h')
| -rw-r--r-- | drivers/md/dm-thin-metadata.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/md/dm-thin-metadata.h b/drivers/md/dm-thin-metadata.h index 1632fec1660d..2bbe622f299d 100644 --- a/drivers/md/dm-thin-metadata.h +++ b/drivers/md/dm-thin-metadata.h @@ -174,6 +174,12 @@ int dm_pool_get_data_dev_size(struct dm_pool_metadata *pmd, dm_block_t *result); */ int dm_pool_resize_data_dev(struct dm_pool_metadata *pmd, dm_block_t new_size); +/* + * Flicks the underlying block manager into read only mode, so you know + * that nothing is changing. + */ +void dm_pool_metadata_read_only(struct dm_pool_metadata *pmd); + /*----------------------------------------------------------------*/ #endif |