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Allow dsl_deadlist_open() return errors

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In some cases like dsl_dataset_hold_obj() it is possible to handle
those errors, so failure to hold dataset should be better than
kernel panic.  Some other places where these errors are still not
handled but asserted should be less dangerous just as unreachable.

We have a user report about pool corruption leading to assertions
on these errors.  Hopefully this will make behavior a bit nicer.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by:	Alexander Motin <mav@FreeBSD.org>
Sponsored by:	iXsystems, Inc.
Closes #16836
This commit is contained in:
Alexander Motin
2024-12-04 18:15:58 -05:00
committed by GitHub
parent 0e020bf3e1
commit c33a55b0c2
8 changed files with 51 additions and 38 deletions
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include/sys/dsl_deadlist.h
+1 -1
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@@ -89,7 +89,7 @@ extern int zfs_livelist_min_percent_shared;
typedef int deadlist_iter_t(void *args, dsl_deadlist_entry_t *dle);
void dsl_deadlist_open(dsl_deadlist_t *dl, objset_t *os, uint64_t object);
int dsl_deadlist_open(dsl_deadlist_t *dl, objset_t *os, uint64_t object);
void dsl_deadlist_close(dsl_deadlist_t *dl);
void dsl_deadlist_iterate(dsl_deadlist_t *dl, deadlist_iter_t func, void *arg);
uint64_t dsl_deadlist_alloc(objset_t *os, dmu_tx_t *tx);