From bb729bc98c0f3e6a898d8730df3e2830bf68751a Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Sun, 6 Dec 2009 09:54:19 +0100 Subject: [PATCH] cfq-iosched: use call_rcu() instead of doing grace period stall on queue exit After the merge of the IO controller patches, booting on my megaraid box ran much slower. Vivek Goyal traced it down to megaraid discovery creating tons of devices, each suffering a grace period when they later kill that queue (if no device is found). So lets use call_rcu() to batch these deferred frees, instead of taking the grace period hit for each one. Signed-off-by: Jens Axboe --- Reading git-format-patch failed