kernel/linux.git/drivers/md/raid1-10.c, branch v6.18.22

md/md-bitmap: add md_bitmap_registered/enabled() helper

2025-09-06T09:11:45+00:00

There are no functional changes, prepare to handle the case that mddev->bitmap_ops can be NULL, which is possible after introducing CONFIG_MD_BITMAP. Link: https://lore.kernel.org/linux-raid/20250707012711.376844-7-yukuai1@huaweicloud.com Signed-off-by: Yu Kuai Reviewed-by: Xiao Ni

md/md-bitmap: add a new parameter 'flush' to bitmap_ops->enabled

2025-09-06T09:11:42+00:00

The method is only used from raid1/raid10 IO path, to check if write bio should be pluged, the parameter is always set to true for now, following patch will use this helper in other context like updating superblock. Link: https://lore.kernel.org/linux-raid/20250707012711.376844-6-yukuai1@huaweicloud.com Signed-off-by: Yu Kuai Reviewed-by: Xiao Ni

md: rename recovery_cp to resync_offset

2025-07-30T17:26:04+00:00

'recovery_cp' was used to represent the progress of sync, but its name contains recovery, which can cause confusion. Replaces 'recovery_cp' with 'resync_offset' for clarity. Signed-off-by: Li Nan Link: https://lore.kernel.org/linux-raid/20250722033340.1933388-1-linan666@huaweicloud.com Signed-off-by: Yu Kuai

md/raid1,raid10: don't handle IO error for REQ_RAHEAD and REQ_NOWAIT

2025-05-30T07:46:45+00:00

IO with REQ_RAHEAD or REQ_NOWAIT can fail early, even if the storage medium is fine, hence record badblocks or remove the disk from array does not make sense. This problem if found by lvm2 test lvcreate-large-raid, where dm-zero will fail read ahead IO directly. Fixes: e879a0d9cb08 ("md/raid1,raid10: don't ignore IO flags") Reported-and-tested-by: Mikulas Patocka Closes: https://lore.kernel.org/all/34fa755d-62c8-4588-8ee1-33cb1249bdf2@redhat.com/ Link: https://lore.kernel.org/linux-raid/20250527081407.3004055-1-yukuai1@huaweicloud.com Signed-off-by: Yu Kuai

Merge tag 'md-6.15-20250312' of https://git.kernel.org/pub/scm/linux/kernel/git/mdraid/linux into for-6.15/block

2025-03-13T11:34:51+00:00

Merge MD changes from Yu: "- fix recovery can preempt resync (Li Nan) - fix md-bitmap IO limit (Su Yue) - fix raid10 discard with REQ_NOWAIT (Xiao Ni) - fix raid1 memory leak (Zheng Qixing) - fix mddev uaf (Yu Kuai) - fix raid1,raid10 IO flags (Yu Kuai) - some refactor and cleanup (Yu Kuai)" * tag 'md-6.15-20250312' of https://git.kernel.org/pub/scm/linux/kernel/git/mdraid/linux: md/raid10: wait barrier before returning discard request with REQ_NOWAIT md/md-bitmap: fix wrong bitmap_limit for clustermd when write sb md/raid1,raid10: don't ignore IO flags md/raid5: merge reshape_progress checking inside get_reshape_loc() md: fix mddev uaf while iterating all_mddevs list md: switch md-cluster to use md_submodle_head md: don't export md_cluster_ops md/md-cluster: cleanup md_cluster_ops reference md: switch personalities to use md_submodule_head md: introduce struct md_submodule_head and APIs md: only include md-cluster.h if necessary md: merge common code into find_pers() md/raid1: fix memory leak in raid1_run() if no active rdev md: ensure resync is prioritized over recovery

badblocks: use sector_t instead of int to avoid truncation of badblocks length

2025-03-06T15:04:52+00:00

There is a truncation of badblocks length issue when set badblocks as follow: echo "2055 4294967299" > bad_blocks cat bad_blocks 2055 3 Change 'sectors' argument type from 'int' to 'sector_t'. This change avoids truncation of badblocks length for large sectors by replacing 'int' with 'sector_t' (u64), enabling proper handling of larger disk sizes and ensuring compatibility with 64-bit sector addressing. Fixes: 9e0e252a048b ("badblocks: Add core badblock management code") Signed-off-by: Zheng Qixing Reviewed-by: Yu Kuai Acked-by: Coly Li Link: https://lore.kernel.org/r/20250227075507.151331-13-zhengqixing@huaweicloud.com Signed-off-by: Jens Axboe

md: don't export md_cluster_ops

2025-03-04T16:28:17+00:00

Add a new field 'cluster_ops' and initialize it md_setup_cluster(), so that the gloable variable 'md_cluter_ops' doesn't need to be exported. Also prepare to switch md-cluster to use md_submod_head. Link: https://lore.kernel.org/linux-raid/20250215092225.2427977-7-yukuai1@huaweicloud.com Signed-off-by: Yu Kuai Reviewed-by: Su Yue

md/md-bitmap: merge md_bitmap_enabled() into bitmap_operations

2024-08-27T19:43:16+00:00

So that the implementation won't be exposed, and it'll be possible to invent a new bitmap by replacing bitmap_operations. Signed-off-by: Yu Kuai Link: https://lore.kernel.org/r/20240826074452.1490072-42-yukuai1@huaweicloud.com Signed-off-by: Song Liu

md/md-bitmap: merge bitmap_unplug() into bitmap_operations

2024-08-27T19:43:14+00:00

md/md-bitmap: merge md_bitmap_unplug_async() into md_bitmap_unplug()

2024-08-27T19:43:14+00:00

Add a parameter 'bool sync' to distinguish them, and md_bitmap_unplug_async() won't be exported anymore, hence bitmap_operations only need one op to cover them. Signed-off-by: Yu Kuai Link: https://lore.kernel.org/r/20240826074452.1490072-32-yukuai1@huaweicloud.com Signed-off-by: Song Liu