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nowait synctask must succeed

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If a `zfs_space_check_t` other than `ZFS_SPACE_CHECK_NONE` is used with
`dsl_sync_task_nowait()`, the sync task may fail due to ENOSPC.
However, there is no way to notice or communicate this failure, so it's
extremely difficult to use this functionality correctly, and in fact
almost all callers use `ZFS_SPACE_CHECK_NONE`.

This commit removes the `zfs_space_check_t` argument from
`dsl_sync_task_nowait()`, and always uses `ZFS_SPACE_CHECK_NONE`.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Matthew Ahrens <mahrens@delphix.com>
Closes #10855
This commit is contained in:
Matthew Ahrens
2020-09-04 10:29:39 -07:00
committed by GitHub
parent cd80273909
commit 3808032489
10 changed files with 26 additions and 41 deletions
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module/zfs/vdev_initialize.c
+2 -3
View File
@@ -126,7 +126,7 @@ vdev_initialize_change_state(vdev_t *vd, vdev_initializing_state_t new_state)
dmu_tx_t *tx = dmu_tx_create_dd(spa_get_dsl(spa)->dp_mos_dir);
VERIFY0(dmu_tx_assign(tx, TXG_WAIT));
dsl_sync_task_nowait(spa_get_dsl(spa), vdev_initialize_zap_update_sync,
guid, 2, ZFS_SPACE_CHECK_NONE, tx);
guid, tx);
switch (new_state) {
case VDEV_INITIALIZE_ACTIVE:
@@ -216,8 +216,7 @@ vdev_initialize_write(vdev_t *vd, uint64_t start, uint64_t size, abd_t *data)
/* This is the first write of this txg. */
dsl_sync_task_nowait(spa_get_dsl(spa),
vdev_initialize_zap_update_sync, guid, 2,
ZFS_SPACE_CHECK_RESERVED, tx);
vdev_initialize_zap_update_sync, guid, tx);
}
/*