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* drbd: don't set max_write_zeroes_sectors in decide_on_discard_supportChristoph Hellwig2024-03-061-1/+0
| | | | | | | | | | | | | fixup_write_zeroes always overrides the max_write_zeroes_sectors value a little further down the callchain, so don't bother to setup a limit in decide_on_discard_support. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Philipp Reisner <philipp.reisner@linbit.com> Reviewed-by: Lars Ellenberg <lars.ellenberg@linbit.com> Tested-by: Christoph Böhmwalder <christoph.boehmwalder@linbit.com> Link: https://lore.kernel.org/r/20240306140332.623759-6-philipp.reisner@linbit.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
* drbd: merge drbd_setup_queue_param into drbd_reconsider_queue_parametersChristoph Hellwig2024-03-061-34/+22
| | | | | | | | | | | | | drbd_setup_queue_param is only called by drbd_reconsider_queue_parameters and there is no really clear boundary of responsibilities between the two. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Philipp Reisner <philipp.reisner@linbit.com> Reviewed-by: Lars Ellenberg <lars.ellenberg@linbit.com> Tested-by: Christoph Böhmwalder <christoph.boehmwalder@linbit.com> Link: https://lore.kernel.org/r/20240306140332.623759-5-philipp.reisner@linbit.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
* drbd: refactor the backing dev max_segments calculationChristoph Hellwig2024-03-061-8/+17
| | | | | | | | | | | | Factor out a drbd_backing_dev_max_segments helper that checks the backing device limitation. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Philipp Reisner <philipp.reisner@linbit.com> Reviewed-by: Lars Ellenberg <lars.ellenberg@linbit.com> Tested-by: Christoph Böhmwalder <christoph.boehmwalder@linbit.com> Link: https://lore.kernel.org/r/20240306140332.623759-4-philipp.reisner@linbit.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
* drbd: refactor drbd_reconsider_queue_parametersChristoph Hellwig2024-03-061-35/+49
| | | | | | | | | | Split out a drbd_max_peer_bio_size helper for the peer I/O size, and condense the various checks to a nested min3(..., max())) instead of using a lot of local variables. Signed-off-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20240305134041.137006-3-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
* drbd: pass the max_hw_sectors limit to blk_alloc_diskChristoph Hellwig2024-03-061-4/+9
| | | | | | | | | Pass a queue_limits structure with the max_hw_sectors limit to blk_alloc_disk instead of updating the limit on the allocated gendisk. Signed-off-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20240305134041.137006-2-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
* sed-opal: Remove the ret variable from the functionLi kunyu2024-03-061-4/+2
| | | | | | | | | The ret variable in the function has not yet been effective and can be removed. Signed-off-by: Li kunyu <kunyu@nfschina.com> Link: https://lore.kernel.org/r/20240306101444.1244-1-kunyu@nfschina.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
* sed-opal: Remove unnecessary ‘0’ values from retLi kunyu2024-03-061-2/+2
| | | | | | | | ret is assigned first, so it does not need to initialize the assignment. Signed-off-by: Li kunyu <kunyu@nfschina.com> Link: https://lore.kernel.org/r/20240306100659.106521-1-kunyu@nfschina.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
* sed-opal: Remove unnecessary ‘0’ values from errLi zeming2024-03-061-1/+1
| | | | | | | | err is assigned first, so it does not need to initialize the assignment. Signed-off-by: Li zeming <zeming@nfschina.com> Link: https://lore.kernel.org/r/20240306100216.69340-1-zeming@nfschina.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
* sed-opal: Remove unnecessary ‘0’ values from errorLi zeming2024-03-061-2/+2
| | | | | | | | error is assigned first, so it does not need to initialize the assignment. Signed-off-by: Li zeming <zeming@nfschina.com> Link: https://lore.kernel.org/r/20240306095608.26839-1-zeming@nfschina.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
* block: make block_class constantRicardo B. Marliere2024-03-063-3/+3
| | | | | | | | | | | | | | | Since commit 43a7206b0963 ("driver core: class: make class_register() take a const *"), the driver core allows for struct class to be in read-only memory, so move the block_class structure to be declared at build time placing it into read-only memory, instead of having to be dynamically allocated at boot time. Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Ricardo B. Marliere <ricardo@marliere.net> Reviewed-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20240305-class_cleanup-block-v1-1-130bb27b9c72@marliere.net Signed-off-by: Jens Axboe <axboe@kernel.dk>
* Merge tag 'md-6.9-20240305' of ↵Jens Axboe2024-03-064-40/+208
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | https://git.kernel.org/pub/scm/linux/kernel/git/song/md into for-6.9/block Pull MD fixes from Song: "This set fixes two issues: 1. dmraid regression since 6.7 kernels. This issue was initially reported in [1]. This set of fix has been reviewed and tested by md and dm folks. 2. raid5 hang since 6.7 kernel, reported in [2]. We haven't got a better fix for this issue yet. This revert is a workaround. It has been applied to 6.7 stable kernels [3], and proved to be affective. We will look more into this issue for a better fix. [1] https://lore.kernel.org/linux-raid/e5e8afe2-e9a8-49a2-5ab0-958d4065c55e@redhat.com/ [2] https://lore.kernel.org/linux-raid/20240123005700.9302-1-dan@danm.net/ [3] 87165c64fe1a in linux-6.7.y branch." * tag 'md-6.9-20240305' of https://git.kernel.org/pub/scm/linux/kernel/git/song/md: dm-raid: fix lockdep waring in "pers->hot_add_disk" dm-raid456, md/raid456: fix a deadlock for dm-raid456 while io concurrent with reshape dm-raid: add a new helper prepare_suspend() in md_personality md/dm-raid: don't call md_reap_sync_thread() directly dm-raid: really frozen sync_thread during suspend md: add a new helper reshape_interrupted() md: export helper md_is_rdwr() md: export helpers to stop sync_thread md: don't clear MD_RECOVERY_FROZEN for new dm-raid until resume Revert "Revert "md/raid5: Wait for MD_SB_CHANGE_PENDING in raid5d""
| * Merge branch 'dmraid-fix-6.9' into md-6.9Song Liu2024-03-054-40/+196
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is the second half of fixes for dmraid. The first half is available at [1]. This set contains fixes: - reshape can start unexpected, cause data corruption, patch 1,5,6; - deadlocks that reshape concurrent with IO, patch 8; - a lockdep warning, patch 9; For all the dmraid related tests in lvm2 suite, there is no new regressions compared against 6.6 kernels (which is good baseline before recent regressions). [1] https://lore.kernel.org/all/CAPhsuW7u1UKHCDOBDhD7DzOVtkGemDz_QnJ4DUq_kSN-Q3G66Q@mail.gmail.com/ * dmraid-fix-6.9: dm-raid: fix lockdep waring in "pers->hot_add_disk" dm-raid456, md/raid456: fix a deadlock for dm-raid456 while io concurrent with reshape dm-raid: add a new helper prepare_suspend() in md_personality md/dm-raid: don't call md_reap_sync_thread() directly dm-raid: really frozen sync_thread during suspend md: add a new helper reshape_interrupted() md: export helper md_is_rdwr() md: export helpers to stop sync_thread md: don't clear MD_RECOVERY_FROZEN for new dm-raid until resume
| | * dm-raid: fix lockdep waring in "pers->hot_add_disk"Yu Kuai2024-03-051-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The lockdep assert is added by commit a448af25becf ("md/raid10: remove rcu protection to access rdev from conf") in print_conf(). And I didn't notice that dm-raid is calling "pers->hot_add_disk" without holding 'reconfig_mutex'. "pers->hot_add_disk" read and write many fields that is protected by 'reconfig_mutex', and raid_resume() already grab the lock in other contex. Hence fix this problem by protecting "pers->host_add_disk" with the lock. Fixes: 9092c02d9435 ("DM RAID: Add ability to restore transiently failed devices on resume") Fixes: a448af25becf ("md/raid10: remove rcu protection to access rdev from conf") Cc: stable@vger.kernel.org # v6.7+ Signed-off-by: Yu Kuai <yukuai3@huawei.com> Signed-off-by: Xiao Ni <xni@redhat.com> Acked-by: Mike Snitzer <snitzer@kernel.org> Signed-off-by: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20240305072306.2562024-10-yukuai1@huaweicloud.com
| | * dm-raid456, md/raid456: fix a deadlock for dm-raid456 while io concurrent ↵Yu Kuai2024-03-054-7/+74
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | with reshape For raid456, if reshape is still in progress, then IO across reshape position will wait for reshape to make progress. However, for dm-raid, in following cases reshape will never make progress hence IO will hang: 1) the array is read-only; 2) MD_RECOVERY_WAIT is set; 3) MD_RECOVERY_FROZEN is set; After commit c467e97f079f ("md/raid6: use valid sector values to determine if an I/O should wait on the reshape") fix the problem that IO across reshape position doesn't wait for reshape, the dm-raid test shell/lvconvert-raid-reshape.sh start to hang: [root@fedora ~]# cat /proc/979/stack [<0>] wait_woken+0x7d/0x90 [<0>] raid5_make_request+0x929/0x1d70 [raid456] [<0>] md_handle_request+0xc2/0x3b0 [md_mod] [<0>] raid_map+0x2c/0x50 [dm_raid] [<0>] __map_bio+0x251/0x380 [dm_mod] [<0>] dm_submit_bio+0x1f0/0x760 [dm_mod] [<0>] __submit_bio+0xc2/0x1c0 [<0>] submit_bio_noacct_nocheck+0x17f/0x450 [<0>] submit_bio_noacct+0x2bc/0x780 [<0>] submit_bio+0x70/0xc0 [<0>] mpage_readahead+0x169/0x1f0 [<0>] blkdev_readahead+0x18/0x30 [<0>] read_pages+0x7c/0x3b0 [<0>] page_cache_ra_unbounded+0x1ab/0x280 [<0>] force_page_cache_ra+0x9e/0x130 [<0>] page_cache_sync_ra+0x3b/0x110 [<0>] filemap_get_pages+0x143/0xa30 [<0>] filemap_read+0xdc/0x4b0 [<0>] blkdev_read_iter+0x75/0x200 [<0>] vfs_read+0x272/0x460 [<0>] ksys_read+0x7a/0x170 [<0>] __x64_sys_read+0x1c/0x30 [<0>] do_syscall_64+0xc6/0x230 [<0>] entry_SYSCALL_64_after_hwframe+0x6c/0x74 This is because reshape can't make progress. For md/raid, the problem doesn't exist because register new sync_thread doesn't rely on the IO to be done any more: 1) If array is read-only, it can switch to read-write by ioctl/sysfs; 2) md/raid never set MD_RECOVERY_WAIT; 3) If MD_RECOVERY_FROZEN is set, mddev_suspend() doesn't hold 'reconfig_mutex', hence it can be cleared and reshape can continue by sysfs api 'sync_action'. However, I'm not sure yet how to avoid the problem in dm-raid yet. This patch on the one hand make sure raid_message() can't change sync_thread() through raid_message() after presuspend(), on the other hand detect the above 3 cases before wait for IO do be done in dm_suspend(), and let dm-raid requeue those IO. Cc: stable@vger.kernel.org # v6.7+ Signed-off-by: Yu Kuai <yukuai3@huawei.com> Signed-off-by: Xiao Ni <xni@redhat.com> Acked-by: Mike Snitzer <snitzer@kernel.org> Signed-off-by: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20240305072306.2562024-9-yukuai1@huaweicloud.com
| | * dm-raid: add a new helper prepare_suspend() in md_personalityYu Kuai2024-03-052-0/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There are no functional changes for now, prepare to fix a deadlock for dm-raid456. Cc: stable@vger.kernel.org # v6.7+ Signed-off-by: Yu Kuai <yukuai3@huawei.com> Signed-off-by: Xiao Ni <xni@redhat.com> Acked-by: Mike Snitzer <snitzer@kernel.org> Signed-off-by: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20240305072306.2562024-8-yukuai1@huaweicloud.com
| | * md/dm-raid: don't call md_reap_sync_thread() directlyYu Kuai2024-03-051-10/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently md_reap_sync_thread() is called from raid_message() directly without holding 'reconfig_mutex', this is definitely unsafe because md_reap_sync_thread() can change many fields that is protected by 'reconfig_mutex'. However, hold 'reconfig_mutex' here is still problematic because this will cause deadlock, for example, commit 130443d60b1b ("md: refactor idle/frozen_sync_thread() to fix deadlock"). Fix this problem by using stop_sync_thread() to unregister sync_thread, like md/raid did. Fixes: be83651f0050 ("DM RAID: Add message/status support for changing sync action") Cc: stable@vger.kernel.org # v6.7+ Signed-off-by: Yu Kuai <yukuai3@huawei.com> Signed-off-by: Xiao Ni <xni@redhat.com> Acked-by: Mike Snitzer <snitzer@kernel.org> Signed-off-by: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20240305072306.2562024-7-yukuai1@huaweicloud.com
| | * dm-raid: really frozen sync_thread during suspendYu Kuai2024-03-052-11/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1) commit f52f5c71f3d4 ("md: fix stopping sync thread") remove MD_RECOVERY_FROZEN from __md_stop_writes() and doesn't realize that dm-raid relies on __md_stop_writes() to frozen sync_thread indirectly. Fix this problem by adding MD_RECOVERY_FROZEN in md_stop_writes(), and since stop_sync_thread() is only used for dm-raid in this case, also move stop_sync_thread() to md_stop_writes(). 2) The flag MD_RECOVERY_FROZEN doesn't mean that sync thread is frozen, it only prevent new sync_thread to start, and it can't stop the running sync thread; In order to frozen sync_thread, after seting the flag, stop_sync_thread() should be used. 3) The flag MD_RECOVERY_FROZEN doesn't mean that writes are stopped, use it as condition for md_stop_writes() in raid_postsuspend() doesn't look correct. Consider that reentrant stop_sync_thread() do nothing, always call md_stop_writes() in raid_postsuspend(). 4) raid_message can set/clear the flag MD_RECOVERY_FROZEN at anytime, and if MD_RECOVERY_FROZEN is cleared while the array is suspended, new sync_thread can start unexpected. Fix this by disallow raid_message() to change sync_thread status during suspend. Note that after commit f52f5c71f3d4 ("md: fix stopping sync thread"), the test shell/lvconvert-raid-reshape.sh start to hang in stop_sync_thread(), and with previous fixes, the test won't hang there anymore, however, the test will still fail and complain that ext4 is corrupted. And with this patch, the test won't hang due to stop_sync_thread() or fail due to ext4 is corrupted anymore. However, there is still a deadlock related to dm-raid456 that will be fixed in following patches. Reported-by: Mikulas Patocka <mpatocka@redhat.com> Closes: https://lore.kernel.org/all/e5e8afe2-e9a8-49a2-5ab0-958d4065c55e@redhat.com/ Fixes: 1af2048a3e87 ("dm raid: fix deadlock caused by premature md_stop_writes()") Fixes: 9dbd1aa3a81c ("dm raid: add reshaping support to the target") Fixes: f52f5c71f3d4 ("md: fix stopping sync thread") Cc: stable@vger.kernel.org # v6.7+ Signed-off-by: Yu Kuai <yukuai3@huawei.com> Signed-off-by: Xiao Ni <xni@redhat.com> Acked-by: Mike Snitzer <snitzer@kernel.org> Signed-off-by: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20240305072306.2562024-6-yukuai1@huaweicloud.com
| | * md: add a new helper reshape_interrupted()Yu Kuai2024-03-051-0/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The helper will be used for dm-raid456 later to detect the case that reshape can't make progress. Cc: stable@vger.kernel.org # v6.7+ Signed-off-by: Yu Kuai <yukuai3@huawei.com> Signed-off-by: Xiao Ni <xni@redhat.com> Acked-by: Mike Snitzer <snitzer@kernel.org> Signed-off-by: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20240305072306.2562024-5-yukuai1@huaweicloud.com
| | * md: export helper md_is_rdwr()Yu Kuai2024-03-052-12/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There are no functional changes for now, prepare to fix a deadlock for dm-raid456. Cc: stable@vger.kernel.org # v6.7+ Signed-off-by: Yu Kuai <yukuai3@huawei.com> Signed-off-by: Xiao Ni <xni@redhat.com> Acked-by: Mike Snitzer <snitzer@kernel.org> Signed-off-by: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20240305072306.2562024-4-yukuai1@huaweicloud.com
| | * md: export helpers to stop sync_threadYu Kuai2024-03-052-0/+32
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add new helpers: void md_idle_sync_thread(struct mddev *mddev); void md_frozen_sync_thread(struct mddev *mddev); void md_unfrozen_sync_thread(struct mddev *mddev); The helpers will be used in dm-raid in later patches to fix regressions and prevent calling md_reap_sync_thread() directly. Cc: stable@vger.kernel.org # v6.7+ Signed-off-by: Yu Kuai <yukuai3@huawei.com> Signed-off-by: Xiao Ni <xni@redhat.com> Acked-by: Mike Snitzer <snitzer@kernel.org> Signed-off-by: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20240305072306.2562024-3-yukuai1@huaweicloud.com
| | * md: don't clear MD_RECOVERY_FROZEN for new dm-raid until resumeYu Kuai2024-03-051-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | After commit 9dbd1aa3a81c ("dm raid: add reshaping support to the target") raid_ctr() will set MD_RECOVERY_FROZEN before md_run() and expect to keep array frozen until resume. However, md_run() will clear the flag by setting mddev->recovery to 0. Before commit 1baae052cccd ("md: Don't ignore suspended array in md_check_recovery()"), dm-raid actually relied on suspending to prevent starting new sync_thread. Fix this problem by keeping 'MD_RECOVERY_FROZEN' for dm-raid in md_run(). Fixes: 1baae052cccd ("md: Don't ignore suspended array in md_check_recovery()") Fixes: 9dbd1aa3a81c ("dm raid: add reshaping support to the target") Cc: stable@vger.kernel.org # v6.7+ Signed-off-by: Yu Kuai <yukuai3@huawei.com> Signed-off-by: Xiao Ni <xni@redhat.com> Acked-by: Mike Snitzer <snitzer@kernel.org> Signed-off-by: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20240305072306.2562024-2-yukuai1@huaweicloud.com
| * | Revert "Revert "md/raid5: Wait for MD_SB_CHANGE_PENDING in raid5d""Song Liu2024-03-051-0/+12
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This reverts commit bed9e27baf52a09b7ba2a3714f1e24e17ced386d. The original set [1][2] was expected to undo a suboptimal fix in [2], and replace it with a better fix [1]. However, as reported by Dan Moulding [2] causes an issue with raid5 with journal device. Revert [2] for now to close the issue. We will follow up on another issue reported by Juxiao Bi, as [2] is expected to fix it. We believe this is a good trade-off, because the latter issue happens less freqently. In the meanwhile, we will NOT revert [1], as it contains the right logic. [1] commit d6e035aad6c0 ("md: bypass block throttle for superblock update") [2] commit bed9e27baf52 ("Revert "md/raid5: Wait for MD_SB_CHANGE_PENDING in raid5d"") Reported-by: Dan Moulding <dan@danm.net> Closes: https://lore.kernel.org/linux-raid/20240123005700.9302-1-dan@danm.net/ Fixes: bed9e27baf52 ("Revert "md/raid5: Wait for MD_SB_CHANGE_PENDING in raid5d"") Cc: stable@vger.kernel.org # v5.19+ Cc: Junxiao Bi <junxiao.bi@oracle.com> Cc: Yu Kuai <yukuai3@huawei.com> Signed-off-by: Song Liu <song@kernel.org> Reviewed-by: Yu Kuai <yukuai3@huawei.com> Link: https://lore.kernel.org/r/20240125082131.788600-1-song@kernel.org
* | dasd: use the atomic queue limits APIChristoph Hellwig2024-03-062-18/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pass the constant limits directly to blk_mq_alloc_disk, set the nonrot flag there as well, and then use the commit API to change the transfer size and logical block size dependent values. This relies on the assumption that no I/O can be pending before the devices moves into the ready state and doesn't need extra freezing for changes to the queue limits. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Stefan Haberland <sth@linux.ibm.com> Link: https://lore.kernel.org/r/20240228133742.806274-4-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
* | dasd: move queue setup to common codeChristoph Hellwig2024-03-065-77/+42
| | | | | | | | | | | | | | | | | | | | | | Most of the code in setup_blk_queue is shared between all disciplines. Move it to common code and leave a method to query the maximum number of transferable blocks, and a flag to indicate discard support. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Stefan Haberland <sth@linux.ibm.com> Link: https://lore.kernel.org/r/20240228133742.806274-3-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
* | dasd: cleamup dasd_state_basic_to_readyChristoph Hellwig2024-03-061-28/+26
| | | | | | | | | | | | | | | | | | Reflow dasd_state_basic_to_ready a bit to make it easier to modify. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Stefan Haberland <sth@linux.ibm.com> Link: https://lore.kernel.org/r/20240228133742.806274-2-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
* | block: Fix page refcounts for unaligned buffers in __bio_release_pages()Tony Battersby2024-03-061-3/+4
|/ | | | | | | | | | | | Fix an incorrect number of pages being released for buffers that do not start at the beginning of a page. Fixes: 1b151e2435fc ("block: Remove special-casing of compound pages") Cc: stable@vger.kernel.org Signed-off-by: Tony Battersby <tonyb@cybernetics.com> Tested-by: Greg Edwards <gedwards@ddn.com> Link: https://lore.kernel.org/r/86e592a9-98d4-4cff-a646-0c0084328356@cybernetics.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
* nbd: use the atomic queue limits API in nbd_set_sizeChristoph Hellwig2024-03-011-4/+11
| | | | | | | | | Use queue_limits_start_update / queue_limits_commit_update to update all the limits in one go and with proper sanity checking. Signed-off-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20240229143846.1047223-4-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
* nbd: freeze the queue for queue limits updatesChristoph Hellwig2024-03-011-1/+13
| | | | | | | | | | | nbd currently updates the logical and physical block sizes as well as the discard_sectors on a live queue. Freeze the queue first to make sure there are not commands in flight that can see torn or inconsistent limits. Signed-off-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20240229143846.1047223-3-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
* nbd: don't clear discard_sectors in nbd_config_putChristoph Hellwig2024-03-011-1/+2
| | | | | | | | | | | | | nbd_config_put currently clears discard_sectors when unusing a device. This is pretty odd behavior and different from the sector size configuration which is simply left in places and then reconfigured when nbd_set_size is as part of configuring the device. Change nbd_set_size to clear discard_sectors if discard is not supported so that all the queue limits changes are handled in one place. Signed-off-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20240229143846.1047223-2-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
* pktcdvd: don't set max_hw_sectors on the underlying deviceChristoph Hellwig2024-03-011-5/+6
| | | | | | | | | | | | | | | | | | pktcdvd sets max_hw_sectors on the queue of the underlying device that it doesn't own (and doesn't reset it ever) since the driver was merged. This can create all kinds of problems as the underlying driver doesn't even know about it changing the limit. As the state purpose is to not create I/Os larger than a single frame, and pktcdvd never builds bios larger than that, just set REQ_NOMERGE on the bios it submits so that largers I/Os never get built. Note: I don't have packet writing hardware, so this is compile tested only. Signed-off-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20240229144408.1047967-1-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
* dm: use queue_limits_setChristoph Hellwig2024-03-012-16/+13
| | | | | | | | | | | | Use queue_limits_set which validates the limits and takes care of updating the readahead settings instead of directly assigning them to the queue. For that make sure all limits are actually updated before the assignment. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Mike Snitzer <snitzer@kernel.org> Link: https://lore.kernel.org/r/20240228225653.947152-4-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
* block: add a queue_limits_stack_bdev helperChristoph Hellwig2024-03-012-0/+27
| | | | | | | | | | | Add a small wrapper around blk_stack_limits that allows passing a bdev for the bottom device and prints an error in case of misaligned device. The name fits into the new queue limits API and the intent is to eventually replace disk_stack_limits. Signed-off-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20240228225653.947152-3-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
* block: add a queue_limits_set helperChristoph Hellwig2024-03-012-0/+19
| | | | | | | | | | Add a small wrapper around queue_limits_commit_update for stacking drivers that don't want to update existing limits, but set an entirely new set. Signed-off-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20240228225653.947152-2-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
* Merge tag 'md-6.9-20240301' of ↵Jens Axboe2024-03-018-381/+549
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | https://git.kernel.org/pub/scm/linux/kernel/git/song/md into for-6.9/block Pull MD updates from Song: "The major changes are: 1. Refactor raid1 read_balance, by Yu Kuai and Paul Luse. 2. Clean up and fix for md_ioctl, by Li Nan. 3. Other small fixes, by Gui-Dong Han and Heming Zhao." * tag 'md-6.9-20240301' of https://git.kernel.org/pub/scm/linux/kernel/git/song/md: (22 commits) md/raid1: factor out helpers to choose the best rdev from read_balance() md/raid1: factor out the code to manage sequential IO md/raid1: factor out choose_bb_rdev() from read_balance() md/raid1: factor out choose_slow_rdev() from read_balance() md/raid1: factor out read_first_rdev() from read_balance() md/raid1-10: factor out a new helper raid1_should_read_first() md/raid1-10: add a helper raid1_check_read_range() md/raid1: fix choose next idle in read_balance() md/raid1: record nonrot rdevs while adding/removing rdevs to conf md/raid1: factor out helpers to add rdev to conf md: add a new helper rdev_has_badblock() md/raid5: fix atomicity violation in raid5_cache_count md/md-bitmap: fix incorrect usage for sb_index md: check mddev->pers before calling md_set_readonly() md: clean up openers check in do_md_stop() and md_set_readonly() md: sync blockdev before stopping raid or setting readonly md: factor out a helper to sync mddev md: Don't clear MD_CLOSING when the raid is about to stop md: return directly before setting did_set_md_closing md: clean up invalid BUG_ON in md_ioctl ...
| * Merge branch 'raid1-read_balance' into md-6.9Song Liu2024-03-016-280/+444
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | From: Yu Kuai <yukuai3@huawei.com> Co-developed-by: Paul Luse <paul.e.luse@linux.intel.com> The original idea is that Paul want to optimize raid1 read performance([1]), however, we think that the original code for read_balance() is quite complex, and we don't want to add more complexity. Hence we decide to refactor read_balance() first, to make code cleaner and easier for follow up. Before this patchset, read_balance() has many local variables and many branches, it want to consider all the scenarios in one iteration. The idea of this patch is to divide them into 4 different steps: 1) If resync is in progress, find the first usable disk, patch 5; Otherwise: 2) Loop through all disks and skipping slow disks and disks with bad blocks, choose the best disk, patch 10. If no disk is found: 3) Look for disks with bad blocks and choose the one with most number of sectors, patch 8. If no disk is found: 4) Choose first found slow disk with no bad blocks, or slow disk with most number of sectors, patch 7. Note that step 3) and step 4) are super code path, and performance should not be considered. And after this patchset, we'll continue to optimize read_balance for step 2), specifically how to choose the best rdev to read. [1] https://lore.kernel.org/all/20240102125115.129261-1-paul.e.luse@linux.intel.com/ Yu Kuai (11): md: add a new helper rdev_has_badblock() md/raid1: factor out helpers to add rdev to conf md/raid1: record nonrot rdevs while adding/removing rdevs to conf md/raid1: fix choose next idle in read_balance() md/raid1-10: add a helper raid1_check_read_range() md/raid1-10: factor out a new helper raid1_should_read_first() md/raid1: factor out read_first_rdev() from read_balance() md/raid1: factor out choose_slow_rdev() from read_balance() md/raid1: factor out choose_bb_rdev() from read_balance() md/raid1: factor out the code to manage sequential IO md/raid1: factor out helpers to choose the best rdev from read_balance()
| | * md/raid1: factor out helpers to choose the best rdev from read_balance()Yu Kuai2024-03-011-77/+98
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The way that best rdev is chosen: 1) If the read is sequential from one rdev: - if rdev is rotational, use this rdev; - if rdev is non-rotational, use this rdev until total read length exceed disk opt io size; 2) If the read is not sequential: - if there is idle disk, use it, otherwise: - if the array has non-rotational disk, choose the rdev with minimal inflight IO; - if all the underlaying disks are rotational disk, choose the rdev with closest IO; There are no functional changes, just to make code cleaner and prepare for following refactor. Co-developed-by: Paul Luse <paul.e.luse@linux.intel.com> Signed-off-by: Paul Luse <paul.e.luse@linux.intel.com> Signed-off-by: Yu Kuai <yukuai3@huawei.com> Reviewed-by: Xiao Ni <xni@redhat.com> Signed-off-by: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20240229095714.926789-12-yukuai1@huaweicloud.com
| | * md/raid1: factor out the code to manage sequential IOYu Kuai2024-03-011-34/+37
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There is no functional change for now, make read_balance() cleaner and prepare to fix problems and refactor the handler of sequential IO. Co-developed-by: Paul Luse <paul.e.luse@linux.intel.com> Signed-off-by: Paul Luse <paul.e.luse@linux.intel.com> Signed-off-by: Yu Kuai <yukuai3@huawei.com> Reviewed-by: Xiao Ni <xni@redhat.com> Signed-off-by: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20240229095714.926789-11-yukuai1@huaweicloud.com
| | * md/raid1: factor out choose_bb_rdev() from read_balance()Yu Kuai2024-03-011-31/+48
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | read_balance() is hard to understand because there are too many status and branches, and it's overlong. This patch factor out the case to read the rdev with bad blocks from read_balance(), there are no functional changes. Co-developed-by: Paul Luse <paul.e.luse@linux.intel.com> Signed-off-by: Paul Luse <paul.e.luse@linux.intel.com> Signed-off-by: Yu Kuai <yukuai3@huawei.com> Reviewed-by: Xiao Ni <xni@redhat.com> Signed-off-by: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20240229095714.926789-10-yukuai1@huaweicloud.com
| | * md/raid1: factor out choose_slow_rdev() from read_balance()Yu Kuai2024-03-011-17/+52
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | read_balance() is hard to understand because there are too many status and branches, and it's overlong. This patch factor out the case to read the slow rdev from read_balance(), there are no functional changes. Co-developed-by: Paul Luse <paul.e.luse@linux.intel.com> Signed-off-by: Paul Luse <paul.e.luse@linux.intel.com> Signed-off-by: Yu Kuai <yukuai3@huawei.com> Reviewed-by: Xiao Ni <xni@redhat.com> Signed-off-by: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20240229095714.926789-9-yukuai1@huaweicloud.com
| | * md/raid1: factor out read_first_rdev() from read_balance()Yu Kuai2024-03-011-17/+46
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | read_balance() is hard to understand because there are too many status and branches, and it's overlong. This patch factor out the case to read the first rdev from read_balance(), there are no functional changes. Co-developed-by: Paul Luse <paul.e.luse@linux.intel.com> Signed-off-by: Paul Luse <paul.e.luse@linux.intel.com> Signed-off-by: Yu Kuai <yukuai3@huawei.com> Reviewed-by: Xiao Ni <xni@redhat.com> Signed-off-by: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20240229095714.926789-8-yukuai1@huaweicloud.com
| | * md/raid1-10: factor out a new helper raid1_should_read_first()Yu Kuai2024-03-013-24/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If resync is in progress, read_balance() should find the first usable disk, otherwise, data could be inconsistent after resync is done. raid1 and raid10 implement the same checking, hence factor out the checking to make code cleaner. Noted that raid1 is using 'mddev->recovery_cp', which is updated after all resync IO is done, while raid10 is using 'conf->next_resync', which is inaccurate because raid10 update it before submitting resync IO. Fortunately, raid10 read IO can't concurrent with resync IO, hence there is no problem. And this patch also switch raid10 to use 'mddev->recovery_cp'. Co-developed-by: Paul Luse <paul.e.luse@linux.intel.com> Signed-off-by: Paul Luse <paul.e.luse@linux.intel.com> Signed-off-by: Yu Kuai <yukuai3@huawei.com> Reviewed-by: Xiao Ni <xni@redhat.com> Signed-off-by: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20240229095714.926789-7-yukuai1@huaweicloud.com
| | * md/raid1-10: add a helper raid1_check_read_range()Yu Kuai2024-03-011-0/+49
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The checking and handler of bad blocks appear many timers during read_balance() in raid1 and raid10. This helper will be used in later patches to simplify read_balance() a lot. Co-developed-by: Paul Luse <paul.e.luse@linux.intel.com> Signed-off-by: Paul Luse <paul.e.luse@linux.intel.com> Signed-off-by: Yu Kuai <yukuai3@huawei.com> Reviewed-by: Xiao Ni <xni@redhat.com> Signed-off-by: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20240229095714.926789-6-yukuai1@huaweicloud.com
| | * md/raid1: fix choose next idle in read_balance()Yu Kuai2024-03-011-10/+22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 12cee5a8a29e ("md/raid1: prevent merging too large request") add the case choose next idle in read_balance(): read_balance: for_each_rdev if(next_seq_sect == this_sector || dist == 0) -> sequential reads best_disk = disk; if (...) choose_next_idle = 1 continue; for_each_rdev -> iterate next rdev if (pending == 0) best_disk = disk; -> choose the next idle disk break; if (choose_next_idle) -> keep using this rdev if there are no other idle disk contine However, commit 2e52d449bcec ("md/raid1: add failfast handling for reads.") remove the code: - /* If device is idle, use it */ - if (pending == 0) { - best_disk = disk; - break; - } Hence choose next idle will never work now, fix this problem by following: 1) don't set best_disk in this case, read_balance() will choose the best disk after iterating all the disks; 2) add 'pending' so that other idle disk will be chosen; 3) add a new local variable 'sequential_disk' to record the disk, and if there is no other idle disk, 'sequential_disk' will be chosen; Fixes: 2e52d449bcec ("md/raid1: add failfast handling for reads.") Co-developed-by: Paul Luse <paul.e.luse@linux.intel.com> Signed-off-by: Paul Luse <paul.e.luse@linux.intel.com> Signed-off-by: Yu Kuai <yukuai3@huawei.com> Reviewed-by: Xiao Ni <xni@redhat.com> Signed-off-by: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20240229095714.926789-5-yukuai1@huaweicloud.com
| | * md/raid1: record nonrot rdevs while adding/removing rdevs to confYu Kuai2024-03-013-7/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For raid1, each read will iterate all the rdevs from conf and check if any rdev is non-rotational, then choose rdev with minimal IO inflight if so, or rdev with closest distance otherwise. Disk nonrot info can be changed through sysfs entry: /sys/block/[disk_name]/queue/rotational However, consider that this should only be used for testing, and user really shouldn't do this in real life. Record the number of non-rotational disks in conf, to avoid checking each rdev in IO fast path and simplify read_balance() a little bit. Co-developed-by: Paul Luse <paul.e.luse@linux.intel.com> Signed-off-by: Paul Luse <paul.e.luse@linux.intel.com> Signed-off-by: Yu Kuai <yukuai3@huawei.com> Signed-off-by: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20240229095714.926789-4-yukuai1@huaweicloud.com
| | * md/raid1: factor out helpers to add rdev to confYu Kuai2024-03-011-32/+53
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There are no functional changes, just make code cleaner and prepare to record disk non-rotational information while adding and removing rdev to conf Signed-off-by: Yu Kuai <yukuai3@huawei.com> Signed-off-by: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20240229095714.926789-3-yukuai1@huaweicloud.com
| | * md: add a new helper rdev_has_badblock()Yu Kuai2024-03-014-72/+44
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The current api is_badblock() must pass in 'first_bad' and 'bad_sectors', however, many caller just want to know if there are badblocks or not, and these caller must define two local variable that will never be used. Add a new helper rdev_has_badblock() that will only return if there are badblocks or not, remove unnecessary local variables and replace is_badblock() with the new helper in many places. There are no functional changes, and the new helper will also be used later to refactor read_balance(). Co-developed-by: Paul Luse <paul.e.luse@linux.intel.com> Signed-off-by: Paul Luse <paul.e.luse@linux.intel.com> Signed-off-by: Yu Kuai <yukuai3@huawei.com> Reviewed-by: Xiao Ni <xni@redhat.com> Signed-off-by: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20240229095714.926789-2-yukuai1@huaweicloud.com
| * md/raid5: fix atomicity violation in raid5_cache_countGui-Dong Han2024-02-271-6/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In raid5_cache_count(): if (conf->max_nr_stripes < conf->min_nr_stripes) return 0; return conf->max_nr_stripes - conf->min_nr_stripes; The current check is ineffective, as the values could change immediately after being checked. In raid5_set_cache_size(): ... conf->min_nr_stripes = size; ... while (size > conf->max_nr_stripes) conf->min_nr_stripes = conf->max_nr_stripes; ... Due to intermediate value updates in raid5_set_cache_size(), concurrent execution of raid5_cache_count() and raid5_set_cache_size() may lead to inconsistent reads of conf->max_nr_stripes and conf->min_nr_stripes. The current checks are ineffective as values could change immediately after being checked, raising the risk of conf->min_nr_stripes exceeding conf->max_nr_stripes and potentially causing an integer overflow. This possible bug is found by an experimental static analysis tool developed by our team. This tool analyzes the locking APIs to extract function pairs that can be concurrently executed, and then analyzes the instructions in the paired functions to identify possible concurrency bugs including data races and atomicity violations. The above possible bug is reported when our tool analyzes the source code of Linux 6.2. To resolve this issue, it is suggested to introduce local variables 'min_stripes' and 'max_stripes' in raid5_cache_count() to ensure the values remain stable throughout the check. Adding locks in raid5_cache_count() fails to resolve atomicity violations, as raid5_set_cache_size() may hold intermediate values of conf->min_nr_stripes while unlocked. With this patch applied, our tool no longer reports the bug, with the kernel configuration allyesconfig for x86_64. Due to the lack of associated hardware, we cannot test the patch in runtime testing, and just verify it according to the code logic. Fixes: edbe83ab4c27 ("md/raid5: allow the stripe_cache to grow and shrink.") Cc: stable@vger.kernel.org Signed-off-by: Gui-Dong Han <2045gemini@gmail.com> Reviewed-by: Yu Kuai <yukuai3@huawei.com> Signed-off-by: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20240112071017.16313-1-2045gemini@gmail.com Signed-off-by: Song Liu <song@kernel.org>
| * md/md-bitmap: fix incorrect usage for sb_indexHeming Zhao2024-02-261-3/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit d7038f951828 ("md-bitmap: don't use ->index for pages backing the bitmap file") removed page->index from bitmap code, but left wrong code logic for clustered-md. current code never set slot offset for cluster nodes, will sometimes cause crash in clustered env. Call trace (partly): md_bitmap_file_set_bit+0x110/0x1d8 [md_mod] md_bitmap_startwrite+0x13c/0x240 [md_mod] raid1_make_request+0x6b0/0x1c08 [raid1] md_handle_request+0x1dc/0x368 [md_mod] md_submit_bio+0x80/0xf8 [md_mod] __submit_bio+0x178/0x300 submit_bio_noacct_nocheck+0x11c/0x338 submit_bio_noacct+0x134/0x614 submit_bio+0x28/0xdc submit_bh_wbc+0x130/0x1cc submit_bh+0x1c/0x28 Fixes: d7038f951828 ("md-bitmap: don't use ->index for pages backing the bitmap file") Cc: stable@vger.kernel.org # v6.6+ Signed-off-by: Heming Zhao <heming.zhao@suse.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20240223121128.28985-1-heming.zhao@suse.com
| * md: check mddev->pers before calling md_set_readonly()Li Nan2024-02-261-11/+11
| | | | | | | | | | | | | | | | | | | | | | If 'mddev->pers' is NULL, there is nothing to do in md_set_readonly(). Except for md_ioctl(), the other two callers of md_set_readonly() have already checked 'mddev->pers'. To simplify the code, move the check of 'mddev->pers' to the caller. Signed-off-by: Li Nan <linan122@huawei.com> Signed-off-by: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20240226031444.3606764-10-linan666@huaweicloud.com
| * md: clean up openers check in do_md_stop() and md_set_readonly()Li Nan2024-02-261-23/+14
| | | | | | | | | | | | | | | | | | | | Before stopping or setting readonly, mddev_set_closing_and_sync_blockdev() is always called to check the openers. So no longer need to check it again in do_md_stop() and md_set_readonly(). Clean it up. Signed-off-by: Li Nan <linan122@huawei.com> Signed-off-by: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20240226031444.3606764-9-linan666@huaweicloud.com
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-11 21:16:22 +0100