+++ /dev/null
-From e5cfefa97bccf956ea0bb6464c1f6c84fd7a8d9f Mon Sep 17 00:00:00 2001
-From: Yu Kuai <yukuai3@huawei.com>
-Date: Fri, 17 Feb 2023 10:22:00 +0800
-Subject: block: fix scan partition for exclusively open device again
-
-From: Yu Kuai <yukuai3@huawei.com>
-
-commit e5cfefa97bccf956ea0bb6464c1f6c84fd7a8d9f upstream.
-
-As explained in commit 36369f46e917 ("block: Do not reread partition table
-on exclusively open device"), reread partition on the device that is
-exclusively opened by someone else is problematic.
-
-This patch will make sure partition scan will only be proceed if current
-thread open the device exclusively, or the device is not opened
-exclusively, and in the later case, other scanners and exclusive openers
-will be blocked temporarily until partition scan is done.
-
-Fixes: 10c70d95c0f2 ("block: remove the bd_openers checks in blk_drop_partitions")
-Cc: <stable@vger.kernel.org>
-Suggested-by: Jan Kara <jack@suse.cz>
-Signed-off-by: Yu Kuai <yukuai3@huawei.com>
-Reviewed-by: Christoph Hellwig <hch@lst.de>
-Link: https://lore.kernel.org/r/20230217022200.3092987-3-yukuai1@huaweicloud.com
-Signed-off-by: Jens Axboe <axboe@kernel.dk>
-Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
----
- block/genhd.c | 30 ++++++++++++++++++++++++++----
- block/ioctl.c | 3 +--
- 2 files changed, 27 insertions(+), 6 deletions(-)
-
---- a/block/genhd.c
-+++ b/block/genhd.c
-@@ -359,6 +359,7 @@ EXPORT_SYMBOL_GPL(disk_uevent);
- int disk_scan_partitions(struct gendisk *disk, fmode_t mode, void *owner)
- {
- struct block_device *bdev;
-+ int ret = 0;
-
- if (disk->flags & (GENHD_FL_NO_PART | GENHD_FL_HIDDEN))
- return -EINVAL;
-@@ -371,11 +372,27 @@ int disk_scan_partitions(struct gendisk
- return -EBUSY;
-
- set_bit(GD_NEED_PART_SCAN, &disk->state);
-- bdev = blkdev_get_by_dev(disk_devt(disk), mode, NULL);
-+ /*
-+ * If the device is opened exclusively by current thread already, it's
-+ * safe to scan partitons, otherwise, use bd_prepare_to_claim() to
-+ * synchronize with other exclusive openers and other partition
-+ * scanners.
-+ */
-+ if (!(mode & FMODE_EXCL)) {
-+ ret = bd_prepare_to_claim(disk->part0, disk_scan_partitions);
-+ if (ret)
-+ return ret;
-+ }
-+
-+ bdev = blkdev_get_by_dev(disk_devt(disk), mode & ~FMODE_EXCL, NULL);
- if (IS_ERR(bdev))
-- return PTR_ERR(bdev);
-- blkdev_put(bdev, mode);
-- return 0;
-+ ret = PTR_ERR(bdev);
-+ else
-+ blkdev_put(bdev, mode);
-+
-+ if (!(mode & FMODE_EXCL))
-+ bd_abort_claiming(disk->part0, disk_scan_partitions);
-+ return ret;
- }
-
- /**
-@@ -501,6 +518,11 @@ int __must_check device_add_disk(struct
- if (ret)
- goto out_unregister_bdi;
-
-+ /* Make sure the first partition scan will be proceed */
-+ if (get_capacity(disk) && !(disk->flags & GENHD_FL_NO_PART) &&
-+ !test_bit(GD_SUPPRESS_PART_SCAN, &disk->state))
-+ set_bit(GD_NEED_PART_SCAN, &disk->state);
-+
- bdev_add(disk->part0, ddev->devt);
- if (get_capacity(disk))
- disk_scan_partitions(disk, FMODE_READ, NULL);
---- a/block/ioctl.c
-+++ b/block/ioctl.c
-@@ -528,8 +528,7 @@ static int blkdev_common_ioctl(struct fi
- return -EACCES;
- if (bdev_is_partition(bdev))
- return -EINVAL;
-- return disk_scan_partitions(bdev->bd_disk, mode & ~FMODE_EXCL,
-- file);
-+ return disk_scan_partitions(bdev->bd_disk, mode, file);
- case BLKTRACESTART:
- case BLKTRACESTOP:
- case BLKTRACETEARDOWN:
+++ /dev/null
-From 1060dbce9da5fa5466b2cfd66c0867705e2972fc Mon Sep 17 00:00:00 2001
-From: Sasha Levin <sashal@kernel.org>
-Date: Mon, 30 Jan 2023 13:22:16 +0100
-Subject: sched/fair: sanitize vruntime of entity being placed
-
-From: Zhang Qiao <zhangqiao22@huawei.com>
-
-[ Upstream commit 829c1651e9c4a6f78398d3e67651cef9bb6b42cc ]
-
-When a scheduling entity is placed onto cfs_rq, its vruntime is pulled
-to the base level (around cfs_rq->min_vruntime), so that the entity
-doesn't gain extra boost when placed backwards.
-
-However, if the entity being placed wasn't executed for a long time, its
-vruntime may get too far behind (e.g. while cfs_rq was executing a
-low-weight hog), which can inverse the vruntime comparison due to s64
-overflow. This results in the entity being placed with its original
-vruntime way forwards, so that it will effectively never get to the cpu.
-
-To prevent that, ignore the vruntime of the entity being placed if it
-didn't execute for much longer than the characteristic sheduler time
-scale.
-
-[rkagan: formatted, adjusted commit log, comments, cutoff value]
-Signed-off-by: Zhang Qiao <zhangqiao22@huawei.com>
-Co-developed-by: Roman Kagan <rkagan@amazon.de>
-Signed-off-by: Roman Kagan <rkagan@amazon.de>
-Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
-Link: https://lkml.kernel.org/r/20230130122216.3555094-1-rkagan@amazon.de
-Signed-off-by: Sasha Levin <sashal@kernel.org>
----
- kernel/sched/fair.c | 15 +++++++++++++--
- 1 file changed, 13 insertions(+), 2 deletions(-)
-
-diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
-index 2c3d0d49c80ea..a976e80920594 100644
---- a/kernel/sched/fair.c
-+++ b/kernel/sched/fair.c
-@@ -4640,6 +4640,7 @@ static void
- place_entity(struct cfs_rq *cfs_rq, struct sched_entity *se, int initial)
- {
- u64 vruntime = cfs_rq->min_vruntime;
-+ u64 sleep_time;
-
- /*
- * The 'current' period is already promised to the current tasks,
-@@ -4669,8 +4670,18 @@ place_entity(struct cfs_rq *cfs_rq, struct sched_entity *se, int initial)
- vruntime -= thresh;
- }
-
-- /* ensure we never gain time by being placed backwards. */
-- se->vruntime = max_vruntime(se->vruntime, vruntime);
-+ /*
-+ * Pull vruntime of the entity being placed to the base level of
-+ * cfs_rq, to prevent boosting it if placed backwards. If the entity
-+ * slept for a long time, don't even try to compare its vruntime with
-+ * the base as it may be too far off and the comparison may get
-+ * inversed due to s64 overflow.
-+ */
-+ sleep_time = rq_clock_task(rq_of(cfs_rq)) - se->exec_start;
-+ if ((s64)sleep_time > 60LL * NSEC_PER_SEC)
-+ se->vruntime = vruntime;
-+ else
-+ se->vruntime = max_vruntime(se->vruntime, vruntime);
- }
-
- static void check_enqueue_throttle(struct cfs_rq *cfs_rq);
---
-2.39.2
-
blk-cgroup-dropping-parent-refcount-after-pd_free_fn.patch
blk-cgroup-synchronize-pd_free_fn-from-blkg_free_wor.patch
trace-blktrace-fix-memory-leak-with-using-debugfs_lo.patch
-sched-fair-sanitize-vruntime-of-entity-being-placed.patch
btrfs-scrub-improve-tree-block-error-reporting.patch
arm64-zynqmp-enable-hs-termination-flag-for-usb-dwc3.patch
cpuidle-intel_idle-fix-cpuidle_flag_init_xstate.patch
rbd-avoid-use-after-free-in-do_rbd_add-when-rbd_dev_create-fails.patch
ceph-update-the-time-stamps-and-try-to-drop-the-suid-sgid.patch
regulator-core-use-ktime_get_boottime-to-determine-how-long-a-regulator-was-off.patch
-block-fix-scan-partition-for-exclusively-open-device-again.patch
panic-fix-the-panic_print-nmi-backtrace-setting.patch
mm-hwpoison-convert-ttu_ignore_hwpoison-to-ttu_hwpoison.patch
alpha-fix-fen-fault-handling.patch
+++ /dev/null
-From e5cfefa97bccf956ea0bb6464c1f6c84fd7a8d9f Mon Sep 17 00:00:00 2001
-From: Yu Kuai <yukuai3@huawei.com>
-Date: Fri, 17 Feb 2023 10:22:00 +0800
-Subject: block: fix scan partition for exclusively open device again
-
-From: Yu Kuai <yukuai3@huawei.com>
-
-commit e5cfefa97bccf956ea0bb6464c1f6c84fd7a8d9f upstream.
-
-As explained in commit 36369f46e917 ("block: Do not reread partition table
-on exclusively open device"), reread partition on the device that is
-exclusively opened by someone else is problematic.
-
-This patch will make sure partition scan will only be proceed if current
-thread open the device exclusively, or the device is not opened
-exclusively, and in the later case, other scanners and exclusive openers
-will be blocked temporarily until partition scan is done.
-
-Fixes: 10c70d95c0f2 ("block: remove the bd_openers checks in blk_drop_partitions")
-Cc: <stable@vger.kernel.org>
-Suggested-by: Jan Kara <jack@suse.cz>
-Signed-off-by: Yu Kuai <yukuai3@huawei.com>
-Reviewed-by: Christoph Hellwig <hch@lst.de>
-Link: https://lore.kernel.org/r/20230217022200.3092987-3-yukuai1@huaweicloud.com
-Signed-off-by: Jens Axboe <axboe@kernel.dk>
-Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
----
- block/genhd.c | 30 ++++++++++++++++++++++++++----
- block/ioctl.c | 3 +--
- 2 files changed, 27 insertions(+), 6 deletions(-)
-
---- a/block/genhd.c
-+++ b/block/genhd.c
-@@ -359,6 +359,7 @@ EXPORT_SYMBOL_GPL(disk_uevent);
- int disk_scan_partitions(struct gendisk *disk, fmode_t mode, void *owner)
- {
- struct block_device *bdev;
-+ int ret = 0;
-
- if (disk->flags & (GENHD_FL_NO_PART | GENHD_FL_HIDDEN))
- return -EINVAL;
-@@ -371,11 +372,27 @@ int disk_scan_partitions(struct gendisk
- return -EBUSY;
-
- set_bit(GD_NEED_PART_SCAN, &disk->state);
-- bdev = blkdev_get_by_dev(disk_devt(disk), mode, NULL);
-+ /*
-+ * If the device is opened exclusively by current thread already, it's
-+ * safe to scan partitons, otherwise, use bd_prepare_to_claim() to
-+ * synchronize with other exclusive openers and other partition
-+ * scanners.
-+ */
-+ if (!(mode & FMODE_EXCL)) {
-+ ret = bd_prepare_to_claim(disk->part0, disk_scan_partitions);
-+ if (ret)
-+ return ret;
-+ }
-+
-+ bdev = blkdev_get_by_dev(disk_devt(disk), mode & ~FMODE_EXCL, NULL);
- if (IS_ERR(bdev))
-- return PTR_ERR(bdev);
-- blkdev_put(bdev, mode);
-- return 0;
-+ ret = PTR_ERR(bdev);
-+ else
-+ blkdev_put(bdev, mode);
-+
-+ if (!(mode & FMODE_EXCL))
-+ bd_abort_claiming(disk->part0, disk_scan_partitions);
-+ return ret;
- }
-
- /**
-@@ -497,6 +514,11 @@ int __must_check device_add_disk(struct
- if (ret)
- goto out_unregister_bdi;
-
-+ /* Make sure the first partition scan will be proceed */
-+ if (get_capacity(disk) && !(disk->flags & GENHD_FL_NO_PART) &&
-+ !test_bit(GD_SUPPRESS_PART_SCAN, &disk->state))
-+ set_bit(GD_NEED_PART_SCAN, &disk->state);
-+
- bdev_add(disk->part0, ddev->devt);
- if (get_capacity(disk))
- disk_scan_partitions(disk, FMODE_READ, NULL);
---- a/block/ioctl.c
-+++ b/block/ioctl.c
-@@ -528,8 +528,7 @@ static int blkdev_common_ioctl(struct fi
- return -EACCES;
- if (bdev_is_partition(bdev))
- return -EINVAL;
-- return disk_scan_partitions(bdev->bd_disk, mode & ~FMODE_EXCL,
-- file);
-+ return disk_scan_partitions(bdev->bd_disk, mode, file);
- case BLKTRACESTART:
- case BLKTRACESTOP:
- case BLKTRACETEARDOWN:
+++ /dev/null
-From 486bd7470ca8f8ab6fb1e6720bad3313d9c6d1d6 Mon Sep 17 00:00:00 2001
-From: Sasha Levin <sashal@kernel.org>
-Date: Mon, 30 Jan 2023 13:22:16 +0100
-Subject: sched/fair: sanitize vruntime of entity being placed
-
-From: Zhang Qiao <zhangqiao22@huawei.com>
-
-[ Upstream commit 829c1651e9c4a6f78398d3e67651cef9bb6b42cc ]
-
-When a scheduling entity is placed onto cfs_rq, its vruntime is pulled
-to the base level (around cfs_rq->min_vruntime), so that the entity
-doesn't gain extra boost when placed backwards.
-
-However, if the entity being placed wasn't executed for a long time, its
-vruntime may get too far behind (e.g. while cfs_rq was executing a
-low-weight hog), which can inverse the vruntime comparison due to s64
-overflow. This results in the entity being placed with its original
-vruntime way forwards, so that it will effectively never get to the cpu.
-
-To prevent that, ignore the vruntime of the entity being placed if it
-didn't execute for much longer than the characteristic sheduler time
-scale.
-
-[rkagan: formatted, adjusted commit log, comments, cutoff value]
-Signed-off-by: Zhang Qiao <zhangqiao22@huawei.com>
-Co-developed-by: Roman Kagan <rkagan@amazon.de>
-Signed-off-by: Roman Kagan <rkagan@amazon.de>
-Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
-Link: https://lkml.kernel.org/r/20230130122216.3555094-1-rkagan@amazon.de
-Signed-off-by: Sasha Levin <sashal@kernel.org>
----
- kernel/sched/fair.c | 15 +++++++++++++--
- 1 file changed, 13 insertions(+), 2 deletions(-)
-
-diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
-index 0f87369914274..717c3ca970e15 100644
---- a/kernel/sched/fair.c
-+++ b/kernel/sched/fair.c
-@@ -4656,6 +4656,7 @@ static void
- place_entity(struct cfs_rq *cfs_rq, struct sched_entity *se, int initial)
- {
- u64 vruntime = cfs_rq->min_vruntime;
-+ u64 sleep_time;
-
- /*
- * The 'current' period is already promised to the current tasks,
-@@ -4685,8 +4686,18 @@ place_entity(struct cfs_rq *cfs_rq, struct sched_entity *se, int initial)
- vruntime -= thresh;
- }
-
-- /* ensure we never gain time by being placed backwards. */
-- se->vruntime = max_vruntime(se->vruntime, vruntime);
-+ /*
-+ * Pull vruntime of the entity being placed to the base level of
-+ * cfs_rq, to prevent boosting it if placed backwards. If the entity
-+ * slept for a long time, don't even try to compare its vruntime with
-+ * the base as it may be too far off and the comparison may get
-+ * inversed due to s64 overflow.
-+ */
-+ sleep_time = rq_clock_task(rq_of(cfs_rq)) - se->exec_start;
-+ if ((s64)sleep_time > 60LL * NSEC_PER_SEC)
-+ se->vruntime = vruntime;
-+ else
-+ se->vruntime = max_vruntime(se->vruntime, vruntime);
- }
-
- static void check_enqueue_throttle(struct cfs_rq *cfs_rq);
---
-2.39.2
-
blk-cgroup-dropping-parent-refcount-after-pd_free_fn.patch
blk-cgroup-synchronize-pd_free_fn-from-blkg_free_wor.patch
trace-blktrace-fix-memory-leak-with-using-debugfs_lo.patch
-sched-fair-sanitize-vruntime-of-entity-being-placed.patch
btrfs-scrub-improve-tree-block-error-reporting.patch
arm64-zynqmp-enable-hs-termination-flag-for-usb-dwc3.patch
cpuidle-intel_idle-fix-cpuidle_flag_init_xstate.patch
rbd-avoid-use-after-free-in-do_rbd_add-when-rbd_dev_create-fails.patch
ceph-update-the-time-stamps-and-try-to-drop-the-suid-sgid.patch
regulator-core-use-ktime_get_boottime-to-determine-how-long-a-regulator-was-off.patch
-block-fix-scan-partition-for-exclusively-open-device-again.patch
panic-fix-the-panic_print-nmi-backtrace-setting.patch
mm-hwpoison-convert-ttu_ignore_hwpoison-to-ttu_hwpoison.patch
genirq-msi-platform-msi-ensure-that-msi-descriptors-are-unreferenced.patch
projects / thirdparty / kernel / stable-queue.git / commitdiff
