diff options
Diffstat (limited to 'module/zfs/dsl_dir.c')
-rw-r--r-- | module/zfs/dsl_dir.c | 21 |
1 files changed, 13 insertions, 8 deletions
diff --git a/module/zfs/dsl_dir.c b/module/zfs/dsl_dir.c index c1b518241..44795f344 100644 --- a/module/zfs/dsl_dir.c +++ b/module/zfs/dsl_dir.c @@ -846,11 +846,21 @@ dsl_dir_diduse_space(dsl_dir_t *dd, dd_used_t type, int64_t used, int64_t compressed, int64_t uncompressed, dmu_tx_t *tx) { int64_t accounted_delta; + + /* + * dsl_dataset_set_refreservation_sync_impl() calls this with + * dd_lock held, so that it can atomically update + * ds->ds_reserved and the dsl_dir accounting, so that + * dsl_dataset_check_quota() can see dataset and dir accounting + * consistently. + */ boolean_t needlock = !MUTEX_HELD(&dd->dd_lock); ASSERT(dmu_tx_is_syncing(tx)); ASSERT(type < DD_USED_NUM); + dmu_buf_will_dirty(dd->dd_dbuf, tx); + if (needlock) mutex_enter(&dd->dd_lock); accounted_delta = parent_delta(dd, dd->dd_phys->dd_used_bytes, used); @@ -859,7 +869,6 @@ dsl_dir_diduse_space(dsl_dir_t *dd, dd_used_t type, dd->dd_phys->dd_compressed_bytes >= -compressed); ASSERT(uncompressed >= 0 || dd->dd_phys->dd_uncompressed_bytes >= -uncompressed); - dmu_buf_will_dirty(dd->dd_dbuf, tx); dd->dd_phys->dd_used_bytes += used; dd->dd_phys->dd_uncompressed_bytes += uncompressed; dd->dd_phys->dd_compressed_bytes += compressed; @@ -894,8 +903,6 @@ void dsl_dir_transfer_space(dsl_dir_t *dd, int64_t delta, dd_used_t oldtype, dd_used_t newtype, dmu_tx_t *tx) { - boolean_t needlock = !MUTEX_HELD(&dd->dd_lock); - ASSERT(dmu_tx_is_syncing(tx)); ASSERT(oldtype < DD_USED_NUM); ASSERT(newtype < DD_USED_NUM); @@ -903,17 +910,15 @@ dsl_dir_transfer_space(dsl_dir_t *dd, int64_t delta, if (delta == 0 || !(dd->dd_phys->dd_flags & DD_FLAG_USED_BREAKDOWN)) return; - if (needlock) - mutex_enter(&dd->dd_lock); + dmu_buf_will_dirty(dd->dd_dbuf, tx); + mutex_enter(&dd->dd_lock); ASSERT(delta > 0 ? dd->dd_phys->dd_used_breakdown[oldtype] >= delta : dd->dd_phys->dd_used_breakdown[newtype] >= -delta); ASSERT(dd->dd_phys->dd_used_bytes >= ABS(delta)); - dmu_buf_will_dirty(dd->dd_dbuf, tx); dd->dd_phys->dd_used_breakdown[oldtype] -= delta; dd->dd_phys->dd_used_breakdown[newtype] += delta; - if (needlock) - mutex_exit(&dd->dd_lock); + mutex_exit(&dd->dd_lock); } typedef struct dsl_dir_set_qr_arg { |