From: Christoph Hellwig <hch@infradead.org>
To: Theodore Ts'o <tytso@mit.edu>, Jens Axboe <axboe@kernel.dk>
Cc: linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org
Subject: [PATCH 0/1] random vs blk-mq
Date: Fri, 25 Apr 2014 00:36:10 -0700 [thread overview]
Message-ID: <20140425073610.GA2143@infradead.org> (raw)
A tester found out that we need add_disk_randomness for my scsi-mq
branch. The patch applied exports add_disk_randomness so that modular
scsi still works with a driver that either uses the low-level I/O
completion routines for the old block layer, or blk-mq, and I'd love
to get this in through Jens' tree which has all the other block work
scsi-mq requires.
But this also brings up an interesting question: blk-mq currently
does not set QUEUE_FLAG_ADD_RANDOM in the default queue flags, so
simply converting a driver to blk-mq will mean it stops contributing
to the random pool. Do we need a more fine grained way to control
this, especially for SCSI?
next reply other threads:[~2014-04-25 7:36 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-04-25 7:36 Christoph Hellwig [this message]
2014-04-25 7:36 ` [PATCH 1/1] random: export add_disk_randomness Christoph Hellwig
2014-04-25 13:49 ` Theodore Ts'o
2014-04-28 11:29 ` Christoph Hellwig
2014-04-28 15:17 ` Jens Axboe
2014-04-25 14:03 ` [PATCH 0/1] random vs blk-mq Theodore Ts'o
2014-04-25 14:22 ` Jens Axboe
2014-04-25 14:18 ` Jens Axboe
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