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-rw-r--r--kernels/linux-libre-pae/0002-block-loop-avoiding-too-many-pending-per-work-I-O.patch52
1 files changed, 0 insertions, 52 deletions
diff --git a/kernels/linux-libre-pae/0002-block-loop-avoiding-too-many-pending-per-work-I-O.patch b/kernels/linux-libre-pae/0002-block-loop-avoiding-too-many-pending-per-work-I-O.patch
deleted file mode 100644
index fcad0c0b9..000000000
--- a/kernels/linux-libre-pae/0002-block-loop-avoiding-too-many-pending-per-work-I-O.patch
+++ /dev/null
@@ -1,52 +0,0 @@
-From 63eb7031005b6f22fc1dab9f0c29435f1b52a96b Mon Sep 17 00:00:00 2001
-From: Ming Lei <ming.lei@canonical.com>
-Date: Tue, 5 May 2015 19:49:55 +0800
-Subject: [PATCH 2/2] block: loop: avoiding too many pending per work I/O
-
-If there are too many pending per work I/O, too many
-high priority work thread can be generated so that
-system performance can be effected.
-
-This patch limits the max_active parameter of workqueue as 16.
-
-This patch fixes Fedora 22 live booting performance
-regression when it is booted from squashfs over dm
-based on loop, and looks the following reasons are
-related with the problem:
-
-- not like other filesyststems(such as ext4), squashfs
-is a bit special, and I observed that increasing I/O jobs
-to access file in squashfs only improve I/O performance a
-little, but it can make big difference for ext4
-
-- nested loop: both squashfs.img and ext3fs.img are mounted
-as loop block, and ext3fs.img is inside the squashfs
-
-- during booting, lots of tasks may run concurrently
-
-Fixes: b5dd2f6047ca108001328aac0e8588edd15f1778
-Cc: stable@vger.kernel.org (v4.0)
-Cc: Justin M. Forbes <jforbes@fedoraproject.org>
-Signed-off-by: Ming Lei <ming.lei@canonical.com>
-Acked-by: Tejun Heo <tj@kernel.org>
-Signed-off-by: Jens Axboe <axboe@fb.com>
----
- drivers/block/loop.c | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
-diff --git a/drivers/block/loop.c b/drivers/block/loop.c
-index 9786aa3..cef6fa8 100644
---- a/drivers/block/loop.c
-+++ b/drivers/block/loop.c
-@@ -725,7 +725,7 @@ static int loop_set_fd(struct loop_device *lo, fmode_t mode,
- goto out_putf;
- error = -ENOMEM;
- lo->wq = alloc_workqueue("kloopd%d",
-- WQ_MEM_RECLAIM | WQ_HIGHPRI | WQ_UNBOUND, 0,
-+ WQ_MEM_RECLAIM | WQ_HIGHPRI | WQ_UNBOUND, 16,
- lo->lo_number);
- if (!lo->wq)
- goto out_putf;
---
-2.4.5
-