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Tom Caputi
b32f1279d4
Currently, dnode_check_slots_free() works by checking dn->dn_type in the dnode to determine if the dnode is reclaimable. However, there is a small window of time between dnode_free_sync() in the first call to dsl_dataset_sync() and when the useraccounting code is run when the type is set DMU_OT_NONE, but the dnode is not yet evictable, leading to crashes. This patch adds the ability for dnodes to track which txg they were last dirtied in and adds a check for this before performing the reclaim. This patch also corrects several instances when dn_dirty_link was treated as a list_node_t when it is technically a multilist_node_t. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Tom Caputi <tcaputi@datto.com> Closes #7147 Closes #7388
ZFS on Linux is an advanced file system and volume manager which was originally developed for Solaris and is now maintained by the OpenZFS community.
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