From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, Mikulas Patocka <mpatocka@redhat.com>,
Mike Snitzer <snitzer@redhat.com>
Subject: [PATCH 5.4 51/71] dm writecache: return the exact table values that were set
Date: Thu, 22 Jul 2021 18:31:26 +0200 [thread overview]
Message-ID: <20210722155619.585316667@linuxfoundation.org> (raw)
In-Reply-To: <20210722155617.865866034@linuxfoundation.org>
From: Mikulas Patocka <mpatocka@redhat.com>
commit 054bee16163df023e2589db09fd27d81f7ad9e72 upstream.
LVM doesn't like it when the target returns different values from what
was set in the constructor. Fix dm-writecache so that the returned
table values are exactly the same as requested values.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: stable@vger.kernel.org # v4.18+
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/md/dm-writecache.c | 32 ++++++++++++++++----------------
1 file changed, 16 insertions(+), 16 deletions(-)
--- a/drivers/md/dm-writecache.c
+++ b/drivers/md/dm-writecache.c
@@ -154,6 +154,7 @@ struct dm_writecache {
bool overwrote_committed:1;
bool memory_vmapped:1;
+ bool start_sector_set:1;
bool high_wm_percent_set:1;
bool low_wm_percent_set:1;
bool max_writeback_jobs_set:1;
@@ -162,6 +163,10 @@ struct dm_writecache {
bool writeback_fua_set:1;
bool flush_on_suspend:1;
+ unsigned high_wm_percent_value;
+ unsigned low_wm_percent_value;
+ unsigned autocommit_time_value;
+
unsigned writeback_all;
struct workqueue_struct *writeback_wq;
struct work_struct writeback_work;
@@ -2069,6 +2074,7 @@ static int writecache_ctr(struct dm_targ
if (sscanf(string, "%llu%c", &start_sector, &dummy) != 1)
goto invalid_optional;
wc->start_sector = start_sector;
+ wc->start_sector_set = true;
if (wc->start_sector != start_sector ||
wc->start_sector >= wc->memory_map_size >> SECTOR_SHIFT)
goto invalid_optional;
@@ -2078,6 +2084,7 @@ static int writecache_ctr(struct dm_targ
goto invalid_optional;
if (high_wm_percent < 0 || high_wm_percent > 100)
goto invalid_optional;
+ wc->high_wm_percent_value = high_wm_percent;
wc->high_wm_percent_set = true;
} else if (!strcasecmp(string, "low_watermark") && opt_params >= 1) {
string = dm_shift_arg(&as), opt_params--;
@@ -2085,6 +2092,7 @@ static int writecache_ctr(struct dm_targ
goto invalid_optional;
if (low_wm_percent < 0 || low_wm_percent > 100)
goto invalid_optional;
+ wc->low_wm_percent_value = low_wm_percent;
wc->low_wm_percent_set = true;
} else if (!strcasecmp(string, "writeback_jobs") && opt_params >= 1) {
string = dm_shift_arg(&as), opt_params--;
@@ -2104,6 +2112,7 @@ static int writecache_ctr(struct dm_targ
if (autocommit_msecs > 3600000)
goto invalid_optional;
wc->autocommit_jiffies = msecs_to_jiffies(autocommit_msecs);
+ wc->autocommit_time_value = autocommit_msecs;
wc->autocommit_time_set = true;
} else if (!strcasecmp(string, "fua")) {
if (WC_MODE_PMEM(wc)) {
@@ -2305,7 +2314,6 @@ static void writecache_status(struct dm_
struct dm_writecache *wc = ti->private;
unsigned extra_args;
unsigned sz = 0;
- uint64_t x;
switch (type) {
case STATUSTYPE_INFO:
@@ -2317,7 +2325,7 @@ static void writecache_status(struct dm_
DMEMIT("%c %s %s %u ", WC_MODE_PMEM(wc) ? 'p' : 's',
wc->dev->name, wc->ssd_dev->name, wc->block_size);
extra_args = 0;
- if (wc->start_sector)
+ if (wc->start_sector_set)
extra_args += 2;
if (wc->high_wm_percent_set)
extra_args += 2;
@@ -2333,26 +2341,18 @@ static void writecache_status(struct dm_
extra_args++;
DMEMIT("%u", extra_args);
- if (wc->start_sector)
+ if (wc->start_sector_set)
DMEMIT(" start_sector %llu", (unsigned long long)wc->start_sector);
- if (wc->high_wm_percent_set) {
- x = (uint64_t)wc->freelist_high_watermark * 100;
- x += wc->n_blocks / 2;
- do_div(x, (size_t)wc->n_blocks);
- DMEMIT(" high_watermark %u", 100 - (unsigned)x);
- }
- if (wc->low_wm_percent_set) {
- x = (uint64_t)wc->freelist_low_watermark * 100;
- x += wc->n_blocks / 2;
- do_div(x, (size_t)wc->n_blocks);
- DMEMIT(" low_watermark %u", 100 - (unsigned)x);
- }
+ if (wc->high_wm_percent_set)
+ DMEMIT(" high_watermark %u", wc->high_wm_percent_value);
+ if (wc->low_wm_percent_set)
+ DMEMIT(" low_watermark %u", wc->low_wm_percent_value);
if (wc->max_writeback_jobs_set)
DMEMIT(" writeback_jobs %u", wc->max_writeback_jobs);
if (wc->autocommit_blocks_set)
DMEMIT(" autocommit_blocks %u", wc->autocommit_blocks);
if (wc->autocommit_time_set)
- DMEMIT(" autocommit_time %u", jiffies_to_msecs(wc->autocommit_jiffies));
+ DMEMIT(" autocommit_time %u", wc->autocommit_time_value);
if (wc->writeback_fua_set)
DMEMIT(" %sfua", wc->writeback_fua ? "" : "no");
break;
next prev parent reply other threads:[~2021-07-22 16:34 UTC|newest]
Thread overview: 78+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-22 16:30 [PATCH 5.4 00/71] 5.4.135-rc1 review Greg Kroah-Hartman
2021-07-22 16:30 ` [PATCH 5.4 01/71] ARM: dts: gemini: rename mdio to the right name Greg Kroah-Hartman
2021-07-22 16:30 ` [PATCH 5.4 02/71] ARM: dts: gemini: add device_type on pci Greg Kroah-Hartman
2021-07-22 16:30 ` [PATCH 5.4 03/71] ARM: dts: rockchip: fix pinctrl sleep nodename for rk3036-kylin and rk3288 Greg Kroah-Hartman
2021-07-22 16:30 ` [PATCH 5.4 04/71] arm64: dts: rockchip: fix pinctrl sleep nodename for rk3399.dtsi Greg Kroah-Hartman
2021-07-22 16:30 ` [PATCH 5.4 05/71] ARM: dts: rockchip: Fix the timer clocks order Greg Kroah-Hartman
2021-07-22 16:30 ` [PATCH 5.4 06/71] ARM: dts: rockchip: Fix IOMMU nodes properties on rk322x Greg Kroah-Hartman
2021-07-22 16:30 ` [PATCH 5.4 07/71] ARM: dts: rockchip: Fix power-controller node names for rk3066a Greg Kroah-Hartman
2021-07-22 16:30 ` [PATCH 5.4 08/71] ARM: dts: rockchip: Fix power-controller node names for rk3188 Greg Kroah-Hartman
2021-07-22 16:30 ` [PATCH 5.4 09/71] ARM: dts: rockchip: Fix power-controller node names for rk3288 Greg Kroah-Hartman
2021-07-22 16:30 ` [PATCH 5.4 10/71] arm64: dts: rockchip: Fix power-controller node names for px30 Greg Kroah-Hartman
2021-07-22 16:30 ` [PATCH 5.4 11/71] arm64: dts: rockchip: Fix power-controller node names for rk3328 Greg Kroah-Hartman
2021-07-22 16:30 ` [PATCH 5.4 12/71] reset: ti-syscon: fix to_ti_syscon_reset_data macro Greg Kroah-Hartman
2021-07-22 16:30 ` [PATCH 5.4 13/71] ARM: brcmstb: dts: fix NAND nodes names Greg Kroah-Hartman
2021-07-22 16:30 ` [PATCH 5.4 14/71] ARM: Cygnus: " Greg Kroah-Hartman
2021-07-22 16:30 ` [PATCH 5.4 15/71] ARM: NSP: " Greg Kroah-Hartman
2021-07-22 16:30 ` [PATCH 5.4 16/71] ARM: dts: BCM63xx: Fix " Greg Kroah-Hartman
2021-07-22 16:30 ` [PATCH 5.4 17/71] ARM: dts: Hurricane 2: " Greg Kroah-Hartman
2021-07-22 16:30 ` [PATCH 5.4 18/71] ARM: dts: imx6: phyFLEX: Fix UART hardware flow control Greg Kroah-Hartman
2021-07-22 16:30 ` [PATCH 5.4 19/71] ARM: imx: pm-imx5: Fix references to imx5_cpu_suspend_info Greg Kroah-Hartman
2021-07-22 16:30 ` [PATCH 5.4 20/71] rtc: mxc_v2: add missing MODULE_DEVICE_TABLE Greg Kroah-Hartman
2021-07-22 16:30 ` [PATCH 5.4 21/71] kbuild: sink stdout from cmd for silent build Greg Kroah-Hartman
2021-07-22 16:30 ` [PATCH 5.4 22/71] ARM: dts: am57xx-cl-som-am57x: fix ti,no-reset-on-init flag for gpios Greg Kroah-Hartman
2021-07-22 16:30 ` [PATCH 5.4 23/71] ARM: dts: am437x-gp-evm: " Greg Kroah-Hartman
2021-07-22 16:30 ` [PATCH 5.4 24/71] ARM: dts: stm32: fix gpio-keys node on STM32 MCU boards Greg Kroah-Hartman
2021-07-22 16:31 ` [PATCH 5.4 25/71] ARM: dts: stm32: fix RCC node name on stm32f429 MCU Greg Kroah-Hartman
2021-07-22 16:31 ` [PATCH 5.4 26/71] ARM: dts: stm32: fix timer nodes on STM32 MCU to prevent warnings Greg Kroah-Hartman
2021-07-22 16:31 ` [PATCH 5.4 27/71] arm64: dts: juno: Update SCPI nodes as per the YAML schema Greg Kroah-Hartman
2021-07-22 16:31 ` [PATCH 5.4 28/71] ARM: dts: rockchip: fix supply properties in io-domains nodes Greg Kroah-Hartman
2021-07-22 16:31 ` [PATCH 5.4 29/71] ARM: dts: stm32: fix i2c node name on stm32f746 to prevent warnings Greg Kroah-Hartman
2021-07-22 16:31 ` [PATCH 5.4 30/71] ARM: dts: stm32: move stmmac axi config in ethernet node on stm32mp15 Greg Kroah-Hartman
2021-07-22 16:31 ` [PATCH 5.4 31/71] soc/tegra: fuse: Fix Tegra234-only builds Greg Kroah-Hartman
2021-07-22 16:31 ` [PATCH 5.4 32/71] firmware: tegra: bpmp: " Greg Kroah-Hartman
2021-07-22 16:31 ` [PATCH 5.4 33/71] arm64: dts: ls208xa: remove bus-num from dspi node Greg Kroah-Hartman
2021-07-22 16:31 ` [PATCH 5.4 34/71] arm64: dts: imx8mq: assign PCIe clocks Greg Kroah-Hartman
2021-07-22 16:31 ` [PATCH 5.4 35/71] thermal/core: Correct function name thermal_zone_device_unregister() Greg Kroah-Hartman
2021-07-22 16:31 ` [PATCH 5.4 36/71] kbuild: mkcompile_h: consider timestamp if KBUILD_BUILD_TIMESTAMP is set Greg Kroah-Hartman
2021-07-22 16:31 ` [PATCH 5.4 37/71] rtc: max77686: Do not enforce (incorrect) interrupt trigger type Greg Kroah-Hartman
2021-07-22 16:31 ` [PATCH 5.4 38/71] scsi: aic7xxx: Fix unintentional sign extension issue on left shift of u8 Greg Kroah-Hartman
2021-07-22 16:31 ` [PATCH 5.4 39/71] scsi: libsas: Add LUN number check in .slave_alloc callback Greg Kroah-Hartman
2021-07-22 16:31 ` [PATCH 5.4 40/71] scsi: libfc: Fix array index out of bound exception Greg Kroah-Hartman
2021-07-22 16:31 ` [PATCH 5.4 41/71] scsi: qedf: Add check to synchronize abort and flush Greg Kroah-Hartman
2021-07-22 16:31 ` [PATCH 5.4 42/71] sched/fair: Fix CFS bandwidth hrtimer expiry type Greg Kroah-Hartman
2021-07-22 16:31 ` [PATCH 5.4 43/71] s390: introduce proper type handling call_on_stack() macro Greg Kroah-Hartman
2021-07-22 16:31 ` [PATCH 5.4 44/71] cifs: prevent NULL deref in cifs_compose_mount_options() Greg Kroah-Hartman
2021-07-22 16:31 ` [PATCH 5.4 45/71] arm64: dts: armada-3720-turris-mox: add firmware node Greg Kroah-Hartman
2021-07-22 16:31 ` [PATCH 5.4 46/71] firmware: turris-mox-rwtm: add marvell,armada-3700-rwtm-firmware compatible string Greg Kroah-Hartman
2021-07-22 16:31 ` [PATCH 5.4 47/71] arm64: dts: marvell: armada-37xx: move firmware node to generic dtsi file Greg Kroah-Hartman
2021-07-22 16:31 ` [PATCH 5.4 48/71] f2fs: Show casefolding support only when supported Greg Kroah-Hartman
2021-07-22 16:31 ` [PATCH 5.4 49/71] usb: cdns3: Enable TDL_CHK only for OUT ep Greg Kroah-Hartman
2021-07-22 16:31 ` [PATCH 5.4 50/71] mm: slab: fix kmem_cache_create failed when sysfs node not destroyed Greg Kroah-Hartman
2021-07-22 16:31 ` Greg Kroah-Hartman [this message]
2021-07-22 16:31 ` [PATCH 5.4 52/71] net: dsa: mv88e6xxx: enable .port_set_policy() on Topaz Greg Kroah-Hartman
2021-07-22 16:31 ` [PATCH 5.4 53/71] net: dsa: mv88e6xxx: enable .rmu_disable() " Greg Kroah-Hartman
2021-07-22 16:31 ` [PATCH 5.4 54/71] net: ipv6: fix return value of ip6_skb_dst_mtu Greg Kroah-Hartman
2021-07-22 16:31 ` [PATCH 5.4 55/71] netfilter: ctnetlink: suspicious RCU usage in ctnetlink_dump_helpinfo Greg Kroah-Hartman
2021-07-22 16:31 ` [PATCH 5.4 56/71] net/sched: act_ct: fix err check for nf_conntrack_confirm Greg Kroah-Hartman
2021-07-22 16:31 ` [PATCH 5.4 57/71] net: bridge: sync fdb to new unicast-filtering ports Greg Kroah-Hartman
2021-07-22 16:31 ` [PATCH 5.4 58/71] net: bcmgenet: Ensure all TX/RX queues DMAs are disabled Greg Kroah-Hartman
2021-07-22 16:31 ` [PATCH 5.4 59/71] net: ip_tunnel: fix mtu calculation for ETHER tunnel devices Greg Kroah-Hartman
2021-07-22 16:31 ` [PATCH 5.4 60/71] net: moxa: fix UAF in moxart_mac_probe Greg Kroah-Hartman
2021-07-22 16:31 ` [PATCH 5.4 61/71] net: qcom/emac: fix UAF in emac_remove Greg Kroah-Hartman
2021-07-22 16:31 ` [PATCH 5.4 62/71] net: ti: fix UAF in tlan_remove_one Greg Kroah-Hartman
2021-07-22 16:31 ` [PATCH 5.4 63/71] net: send SYNACK packet with accepted fwmark Greg Kroah-Hartman
2021-07-22 16:31 ` [PATCH 5.4 64/71] net: validate lwtstate->data before returning from skb_tunnel_info() Greg Kroah-Hartman
2021-07-22 16:31 ` [PATCH 5.4 65/71] net: fddi: fix UAF in fza_probe Greg Kroah-Hartman
2021-07-22 16:31 ` [PATCH 5.4 66/71] dma-buf/sync_file: Dont leak fences on merge failure Greg Kroah-Hartman
2021-07-22 16:31 ` [PATCH 5.4 67/71] tcp: annotate data races around tp->mtu_info Greg Kroah-Hartman
2021-07-22 16:31 ` [PATCH 5.4 68/71] ipv6: tcp: drop silly ICMPv6 packet too big messages Greg Kroah-Hartman
2021-07-22 16:31 ` [PATCH 5.4 69/71] bpftool: Properly close va_list ap by va_end() on error Greg Kroah-Hartman
2021-07-22 16:31 ` [PATCH 5.4 70/71] perf test bpf: Free obj_buf Greg Kroah-Hartman
2021-07-22 16:31 ` [PATCH 5.4 71/71] udp: annotate data races around unix_sk(sk)->gso_size Greg Kroah-Hartman
2021-07-23 6:36 ` [PATCH 5.4 00/71] 5.4.135-rc1 review Samuel Zou
2021-07-23 11:28 ` Sudip Mukherjee
2021-07-23 12:54 ` Naresh Kamboju
2021-07-23 15:58 ` Shuah Khan
2021-07-23 16:16 ` Florian Fainelli
2021-07-23 21:07 ` Guenter Roeck
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