diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2017-06-29 14:23:02 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-06-29 14:23:02 -0700 |
| commit | 27bc344014289a298a9fad4b828fcf61daa60aff (patch) | |
| tree | 37b04a28d5afd9e95522889a425b64fae95cd8f2 /drivers/md/dm-thin.c | |
| parent | 374bf8831aa99a445d6d26c56a65fb35db747d91 (diff) | |
| parent | 00a0ea33b495ee6149bf5a77ac5807ce87323abb (diff) | |
Merge tag 'for-4.12/dm-fixes-5' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
Pull device mapper fixes from Mike Snitzer:
- dm thinp fix for crash that will occur when metadata device failure
races with discard passdown to the underlying data device.
- dm raid fix to not access the superblock's >= 1.9.0 'sectors' member
unconditionally.
* tag 'for-4.12/dm-fixes-5' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
dm thin: do not queue freed thin mapping for next stage processing
dm raid: fix oops on upgrading to extended superblock format
Diffstat (limited to 'drivers/md/dm-thin.c')
| -rw-r--r-- | drivers/md/dm-thin.c | 26 |
1 files changed, 13 insertions, 13 deletions
diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c index 17ad50daed08..28808e5ec0fd 100644 --- a/drivers/md/dm-thin.c +++ b/drivers/md/dm-thin.c @@ -1094,6 +1094,19 @@ static void process_prepared_discard_passdown_pt1(struct dm_thin_new_mapping *m) return; } + /* + * Increment the unmapped blocks. This prevents a race between the + * passdown io and reallocation of freed blocks. + */ + r = dm_pool_inc_data_range(pool->pmd, m->data_block, data_end); + if (r) { + metadata_operation_failed(pool, "dm_pool_inc_data_range", r); + bio_io_error(m->bio); + cell_defer_no_holder(tc, m->cell); + mempool_free(m, pool->mapping_pool); + return; + } + discard_parent = bio_alloc(GFP_NOIO, 1); if (!discard_parent) { DMWARN("%s: unable to allocate top level discard bio for passdown. Skipping passdown.", @@ -1114,19 +1127,6 @@ static void process_prepared_discard_passdown_pt1(struct dm_thin_new_mapping *m) end_discard(&op, r); } } - - /* - * Increment the unmapped blocks. This prevents a race between the - * passdown io and reallocation of freed blocks. - */ - r = dm_pool_inc_data_range(pool->pmd, m->data_block, data_end); - if (r) { - metadata_operation_failed(pool, "dm_pool_inc_data_range", r); - bio_io_error(m->bio); - cell_defer_no_holder(tc, m->cell); - mempool_free(m, pool->mapping_pool); - return; - } } static void process_prepared_discard_passdown_pt2(struct dm_thin_new_mapping *m) |