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4036b8d027
In dbuf_read_verify_dnode_crypt(): - We don't need original dbuf locked there. Instead take a lock on a dnode dbuf, that is actually manipulated. - Block decryption for a dnode dbuf if it is currently being written. ARC hash lock does not protect anonymous buffers, so arc_untransform() is unsafe when used on buffers being written, that may happen in case of encrypted dnode buffers, since they are not copied by dbuf_dirty()/dbuf_hold_copy(). In dbuf_read(): - If the buffer is in flight, recheck its compression/encryption status after it is cached, since it may need arc_untransform(). Tested-by: Rich Ercolani <rincebrain@gmail.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Alexander Motin <mav@FreeBSD.org> Sponsored by: iXsystems, Inc. Closes #16104 |
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