Serapheim Dimitropoulos 1c4b0fc745 Race condition between spa async threads and export ... In the past we've seen multiple race conditions that have to do with open-context threads async threads and concurrent calls to spa_export()/spa_destroy() (including the one referenced in issue #9015). This patch ensures that only one thread can execute the main body of spa_export_common() at a time, with subsequent threads returning with a new error code created just for this situation, eliminating this way any race condition bugs introduced by concurrent calls to this function. Reviewed by: Matt Ahrens <matt@delphix.com> Reviewed by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Serapheim Dimitropoulos <serapheim@delphix.com> Closes #9015 Closes #9044		2019-09-25 11:27:50 -07:00
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avl	Update build system and packaging	2018-05-29 16:00:33 -07:00
icp	Minor style cleanup	2019-09-25 11:27:49 -07:00
lua	Update build system and packaging	2018-05-29 16:00:33 -07:00
nvpair	Use NV_ENCODE_NATIVE for nvlist encoding variable	2019-04-26 11:24:31 -07:00
spl	Retire unused spl_{mutex,rwlock}_{init_fini}	2019-09-25 11:27:49 -07:00
unicode	Update build system and packaging	2018-05-29 16:00:33 -07:00
zcommon	Minor style cleanup	2019-09-25 11:27:49 -07:00
zfs	Race condition between spa async threads and export	2019-09-25 11:27:50 -07:00
.gitignore	Prepare SPL repo to merge with ZFS repo	2018-05-29 14:51:39 -07:00
Makefile.in	Fix out-of-tree build failures	2019-09-25 11:27:48 -07:00