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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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include/sys/dsl_synctask.h
+2 -2
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@@ -112,11 +112,11 @@ void dsl_sync_task_sync(dsl_sync_task_t *, dmu_tx_t *);
int dsl_sync_task(const char *, dsl_checkfunc_t *,
dsl_syncfunc_t *, void *, int, zfs_space_check_t);
void dsl_sync_task_nowait(struct dsl_pool *, dsl_syncfunc_t *,
void *, int, zfs_space_check_t, dmu_tx_t *);
void *, dmu_tx_t *);
int dsl_early_sync_task(const char *, dsl_checkfunc_t *,
dsl_syncfunc_t *, void *, int, zfs_space_check_t);
void dsl_early_sync_task_nowait(struct dsl_pool *, dsl_syncfunc_t *,
void *, int, zfs_space_check_t, dmu_tx_t *);
void *, dmu_tx_t *);
int dsl_sync_task_sig(const char *, dsl_checkfunc_t *, dsl_syncfunc_t *,
dsl_sigfunc_t *, void *, int, zfs_space_check_t);