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233425a153
With zl_suspend read in zil_commit() not protected by any locks it is possible for new ZIL writes to be in progress while zil_destroy() called by zil_suspend() freeing them. This patch closes the race by taking zl_issuer_lock in zil_suspend() and adding the second zl_suspend check to zil_get_commit_list(), protected by the lock. It allows all already queued transactions to be logged normally, while blocks any new ones, calling txg_wait_synced() for the TXGs. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Alexander Motin <mav@FreeBSD.org> Sponsored by: iXsystems, Inc. Closes #14979 |
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