From: Richard Yao <ryao@cs.stonybrook.edu>
Date: Mon, 16 Apr 2012 10:56:20 +0000 (-0400)
Subject: Disable direct reclaim on zvols
X-Git-Url: https://git.camperquake.de/gitweb.cgi?a=commitdiff_plain;h=ce90208cf9e04df966429f115d8831371ea9afce;hp=ce90208cf9e04df966429f115d8831371ea9afce;p=zfs.git

Disable direct reclaim on zvols

Previously, it was possible for the direct reclaim path to be invoked
when a write to a zvol was made. When a zvol is used as a swap device,
this often causes swap requests to depend on additional swap requests,
which deadlocks. We address this by disabling the direct reclaim path
on zvols.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #342
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