-From: Shaohua Li <shli@fb.com>
-
-Basically this is a copy of commit 001e4a8775f6(ext4: implement cgroup
-writeback support). Tested with a fio test, verified writeback is
-throttled against cgroup io.max write bandwidth, also verified moving
-the fio test to another cgroup and the writeback is throttled against
-new cgroup setting.
-
-Cc: Tejun Heo <tj@kernel.org>
-Signed-off-by: Shaohua Li <shli@fb.com>
----
- fs/xfs/xfs_aops.c | 2 ++
- fs/xfs/xfs_super.c | 1 +
- 2 files changed, 3 insertions(+)
-
---- linux-4.19/fs/xfs/xfs_aops.c.org 2018-11-21 10:31:12.348955352 +0100
-+++ linux-4.19/fs/xfs/xfs_aops.c 2018-11-21 10:34:35.241764742 +0100
-@@ -613,8 +613,10 @@ xfs_add_to_ioend(
- list_add(&wpc->ioend->io_list, iolist);
- wpc->ioend = xfs_alloc_ioend(inode, wpc->io_type, offset,
- bdev, sector);
-+ wbc_init_bio(wbc, wpc->ioend->io_bio);
- }
+; https://lkml.org/lkml/2019/7/10/244
+diff -ur linux-5.3/drivers/scsi/aacraid.org/aacraid.h linux-5.3/drivers/scsi/aacraid/aacraid.h
+--- linux-5.3/drivers/scsi/aacraid.org/aacraid.h 2019-11-01 22:42:37.011469816 +0100
++++ linux-5.3/drivers/scsi/aacraid/aacraid.h 2019-11-04 09:29:51.321486211 +0100
+@@ -2740,17 +2740,6 @@
+ int aac_rx_deliver_producer(struct fib * fib);
+ void aac_reinit_aif(struct aac_dev *aac, unsigned int index);
-+ wbc_account_io(wbc, page, len);
- if (!__bio_try_merge_page(wpc->ioend->io_bio, page, len, poff)) {
- if (iop)
- atomic_inc(&iop->write_count);
-diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c
-index 584cf2d..aea3bc2 100644
---- a/fs/xfs/xfs_super.c
-+++ b/fs/xfs/xfs_super.c
-@@ -1634,6 +1634,7 @@ xfs_fs_fill_super(
- sb->s_max_links = XFS_MAXLINK;
- sb->s_time_gran = 1;
- set_posix_acl_flag(sb);
-+ sb->s_iflags |= SB_I_CGROUPWB;
+-static inline int aac_is_src(struct aac_dev *dev)
+-{
+- u16 device = dev->pdev->device;
+-
+- if (device == PMC_DEVICE_S6 ||
+- device == PMC_DEVICE_S7 ||
+- device == PMC_DEVICE_S8)
+- return 1;
+- return 0;
+-}
+-
+ static inline int aac_supports_2T(struct aac_dev *dev)
+ {
+ return (dev->adapter_info.options & AAC_OPT_NEW_COMM_64);
+diff -ur linux-5.3/drivers/scsi/aacraid.org/comminit.c linux-5.3/drivers/scsi/aacraid/comminit.c
+--- linux-5.3/drivers/scsi/aacraid.org/comminit.c 2019-11-01 22:42:37.014803249 +0100
++++ linux-5.3/drivers/scsi/aacraid/comminit.c 2019-11-04 09:29:51.321486211 +0100
+@@ -41,8 +41,11 @@
+ {
+ u32 status = 0;
- /* version 5 superblocks support inode version counters. */
- if (XFS_SB_VERSION_NUM(&mp->m_sb) == XFS_SB_VERSION_5)
-From e820d55cb99dd93ac2dc949cf486bb187e5cd70d Mon Sep 17 00:00:00 2001
-From: Guoqing Jiang <gqjiang@suse.com>
-Date: Wed, 19 Dec 2018 14:19:25 +0800
-Subject: md: fix raid10 hang issue caused by barrier
-MIME-Version: 1.0
-Content-Type: text/plain; charset=UTF-8
-Content-Transfer-Encoding: 8bit
-
-When both regular IO and resync IO happen at the same time,
-and if we also need to split regular. Then we can see tasks
-hang due to barrier.
-
-1. resync thread
-[ 1463.757205] INFO: task md1_resync:5215 blocked for more than 480 seconds.
-[ 1463.757207] Not tainted 4.19.5-1-default #1
-[ 1463.757209] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
-[ 1463.757212] md1_resync D 0 5215 2 0x80000000
-[ 1463.757216] Call Trace:
-[ 1463.757223] ? __schedule+0x29a/0x880
-[ 1463.757231] ? raise_barrier+0x8d/0x140 [raid10]
-[ 1463.757236] schedule+0x78/0x110
-[ 1463.757243] raise_barrier+0x8d/0x140 [raid10]
-[ 1463.757248] ? wait_woken+0x80/0x80
-[ 1463.757257] raid10_sync_request+0x1f6/0x1e30 [raid10]
-[ 1463.757265] ? _raw_spin_unlock_irq+0x22/0x40
-[ 1463.757284] ? is_mddev_idle+0x125/0x137 [md_mod]
-[ 1463.757302] md_do_sync.cold.78+0x404/0x969 [md_mod]
-[ 1463.757311] ? wait_woken+0x80/0x80
-[ 1463.757336] ? md_rdev_init+0xb0/0xb0 [md_mod]
-[ 1463.757351] md_thread+0xe9/0x140 [md_mod]
-[ 1463.757358] ? _raw_spin_unlock_irqrestore+0x2e/0x60
-[ 1463.757364] ? __kthread_parkme+0x4c/0x70
-[ 1463.757369] kthread+0x112/0x130
-[ 1463.757374] ? kthread_create_worker_on_cpu+0x40/0x40
-[ 1463.757380] ret_from_fork+0x3a/0x50
-
-2. regular IO
-[ 1463.760679] INFO: task kworker/0:8:5367 blocked for more than 480 seconds.
-[ 1463.760683] Not tainted 4.19.5-1-default #1
-[ 1463.760684] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
-[ 1463.760687] kworker/0:8 D 0 5367 2 0x80000000
-[ 1463.760718] Workqueue: md submit_flushes [md_mod]
-[ 1463.760721] Call Trace:
-[ 1463.760731] ? __schedule+0x29a/0x880
-[ 1463.760741] ? wait_barrier+0xdd/0x170 [raid10]
-[ 1463.760746] schedule+0x78/0x110
-[ 1463.760753] wait_barrier+0xdd/0x170 [raid10]
-[ 1463.760761] ? wait_woken+0x80/0x80
-[ 1463.760768] raid10_write_request+0xf2/0x900 [raid10]
-[ 1463.760774] ? wait_woken+0x80/0x80
-[ 1463.760778] ? mempool_alloc+0x55/0x160
-[ 1463.760795] ? md_write_start+0xa9/0x270 [md_mod]
-[ 1463.760801] ? try_to_wake_up+0x44/0x470
-[ 1463.760810] raid10_make_request+0xc1/0x120 [raid10]
-[ 1463.760816] ? wait_woken+0x80/0x80
-[ 1463.760831] md_handle_request+0x121/0x190 [md_mod]
-[ 1463.760851] md_make_request+0x78/0x190 [md_mod]
-[ 1463.760860] generic_make_request+0x1c6/0x470
-[ 1463.760870] raid10_write_request+0x77a/0x900 [raid10]
-[ 1463.760875] ? wait_woken+0x80/0x80
-[ 1463.760879] ? mempool_alloc+0x55/0x160
-[ 1463.760895] ? md_write_start+0xa9/0x270 [md_mod]
-[ 1463.760904] raid10_make_request+0xc1/0x120 [raid10]
-[ 1463.760910] ? wait_woken+0x80/0x80
-[ 1463.760926] md_handle_request+0x121/0x190 [md_mod]
-[ 1463.760931] ? _raw_spin_unlock_irq+0x22/0x40
-[ 1463.760936] ? finish_task_switch+0x74/0x260
-[ 1463.760954] submit_flushes+0x21/0x40 [md_mod]
-
-So resync io is waiting for regular write io to complete to
-decrease nr_pending (conf->barrier++ is called before waiting).
-The regular write io splits another bio after call wait_barrier
-which call nr_pending++, then the splitted bio would continue
-with raid10_write_request -> wait_barrier, so the splitted bio
-has to wait for barrier to be zero, then deadlock happens as
-follows.
-
- resync io regular io
-
- raise_barrier
- wait_barrier
- generic_make_request
- wait_barrier
-
-To resolve the issue, we need to call allow_barrier to decrease
-nr_pending before generic_make_request since regular IO is not
-issued to underlying devices, and wait_barrier is called again
-to ensure no internal IO happening.
-
-Fixes: fc9977dd069e ("md/raid10: simplify the splitting of requests.")
-Reported-and-tested-by: SiniĊĦa Bandin <sinisa@4net.rs>
-Signed-off-by: Guoqing Jiang <gqjiang@suse.com>
-Signed-off-by: Shaohua Li <shli@fb.com>
----
- drivers/md/raid10.c | 4 ++++
- 1 file changed, 4 insertions(+)
-
-diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
-index 76c92e31afc0..abb5d382f64d 100644
---- a/drivers/md/raid10.c
-+++ b/drivers/md/raid10.c
-@@ -1209,7 +1209,9 @@ static void raid10_read_request(struct mddev *mddev, struct bio *bio,
- struct bio *split = bio_split(bio, max_sectors,
- gfp, &conf->bio_split);
- bio_chain(split, bio);
-+ allow_barrier(conf);
- generic_make_request(bio);
-+ wait_barrier(conf);
- bio = split;
- r10_bio->master_bio = bio;
- r10_bio->sectors = max_sectors;
-@@ -1492,7 +1494,9 @@ retry_write:
- struct bio *split = bio_split(bio, r10_bio->sectors,
- GFP_NOIO, &conf->bio_split);
- bio_chain(split, bio);
-+ allow_barrier(conf);
- generic_make_request(bio);
-+ wait_barrier(conf);
- bio = split;
- r10_bio->master_bio = bio;
+- if (aac_is_src(dev))
++ if (dev->pdev->device == PMC_DEVICE_S6 ||
++ dev->pdev->device == PMC_DEVICE_S7 ||
++ dev->pdev->device == PMC_DEVICE_S8) {
+ status = src_readl(dev, MUnit.OMR);
++ }
+ return (status & AAC_INT_MODE_MSIX);
+ }
+
+@@ -349,7 +352,8 @@
+ /* FIB should be freed only after getting the response from the F/W */
+ if (status != -ERESTARTSYS)
+ aac_fib_free(fibctx);
+- if (aac_is_src(dev) &&
++ if ((dev->pdev->device == PMC_DEVICE_S7 ||
++ dev->pdev->device == PMC_DEVICE_S8) &&
+ dev->msi_enabled)
+ aac_set_intx_mode(dev);
+ return status;
+@@ -610,7 +614,8 @@
+ dev->max_fib_size = status[1] & 0xFFE0;
+ host->sg_tablesize = status[2] >> 16;
+ dev->sg_tablesize = status[2] & 0xFFFF;
+- if (aac_is_src(dev)) {
++ if (dev->pdev->device == PMC_DEVICE_S7 ||
++ dev->pdev->device == PMC_DEVICE_S8) {
+ if (host->can_queue > (status[3] >> 16) -
+ AAC_NUM_MGT_FIB)
+ host->can_queue = (status[3] >> 16) -
+@@ -629,7 +634,9 @@
+ pr_warn("numacb=%d ignored\n", numacb);
}
---
-cgit 1.2-0.3.lf.el7
+
+- if (aac_is_src(dev))
++ if (dev->pdev->device == PMC_DEVICE_S6 ||
++ dev->pdev->device == PMC_DEVICE_S7 ||
++ dev->pdev->device == PMC_DEVICE_S8)
+ aac_define_int_mode(dev);
+ /*
+ * Ok now init the communication subsystem
+diff -ur linux-5.3/drivers/scsi/aacraid.org/commsup.c linux-5.3/drivers/scsi/aacraid/commsup.c
+--- linux-5.3/drivers/scsi/aacraid.org/commsup.c 2019-11-01 22:42:37.014803249 +0100
++++ linux-5.3/drivers/scsi/aacraid/commsup.c 2019-11-04 09:29:51.321486211 +0100
+@@ -2593,7 +2593,9 @@
+ {
+ int i;
+
+- if (aac_is_src(dev)) {
++ if (dev->pdev->device == PMC_DEVICE_S6 ||
++ dev->pdev->device == PMC_DEVICE_S7 ||
++ dev->pdev->device == PMC_DEVICE_S8) {
+ if (dev->max_msix > 1) {
+ for (i = 0; i < dev->max_msix; i++)
+ free_irq(pci_irq_vector(dev->pdev, i),
+diff -ur linux-5.3/drivers/scsi/aacraid.org/linit.c linux-5.3/drivers/scsi/aacraid/linit.c
+--- linux-5.3/drivers/scsi/aacraid.org/linit.c 2019-11-01 22:42:37.011469816 +0100
++++ linux-5.3/drivers/scsi/aacraid/linit.c 2019-11-04 09:29:51.321486211 +0100
+@@ -1567,8 +1567,9 @@
+ aac_send_shutdown(aac);
+
+ aac_adapter_disable_int(aac);
+-
+- if (aac_is_src(aac)) {
++ if (aac->pdev->device == PMC_DEVICE_S6 ||
++ aac->pdev->device == PMC_DEVICE_S7 ||
++ aac->pdev->device == PMC_DEVICE_S8) {
+ if (aac->max_msix > 1) {
+ for (i = 0; i < aac->max_msix; i++) {
+ free_irq(pci_irq_vector(aac->pdev, i),
+@@ -1858,7 +1859,8 @@
+ aac_adapter_enable_int(dev);
+
+
+- if (aac_is_src(dev))
++ if (dev->pdev->device == PMC_DEVICE_S7 ||
++ dev->pdev->device == PMC_DEVICE_S8)
+ aac_define_int_mode(dev);
+
+ if (dev->msi_enabled)
+--- linux-5.7/scripts/ld-version.sh~ 2020-06-01 01:49:15.000000000 +0200
++++ linux-5.7/scripts/ld-version.sh 2020-06-02 08:28:48.303207264 +0200
+@@ -1,4 +1,4 @@
+-#!/usr/bin/awk -f
++#!/bin/awk -f
+ # SPDX-License-Identifier: GPL-2.0
+ # extract linker version number from stdin and turn into single number
+ {
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