linux.git/drivers/md/md-bitmap.h, branch v6.17

md/md-bitmap: remove parameter slot from bitmap_create()

2025-05-30T07:47:23+00:00

All callers pass in '-1' for 'slot', hence it can be removed.

Link: https://lore.kernel.org/linux-raid/20250524061320.370630-6-yukuai1@huaweicloud.com
Signed-off-by: Yu Kuai 
Reviewed-by: Christoph Hellwig 
Reviewed-by: Xiao Ni 
Reviewed-by: Christoph Hellwig 
Reviewed-by: Hannes Reinecke

md/md-bitmap: cleanup bitmap_ops->startwrite()

2025-05-30T07:47:23+00:00

bitmap_startwrite() always return 0, and the caller doesn't check return
value as well, hence change the method to void.

Also rename startwrite/endwrite to start_write/end_write, which is more in
line with the usual naming convention.

Link: https://lore.kernel.org/linux-raid/20250524061320.370630-4-yukuai1@huaweicloud.com
Signed-off-by: Yu Kuai 
Reviewed-by: Xiao Ni 
Reviewed-by: Christoph Hellwig 
Reviewed-by: Hannes Reinecke

md/dm-raid: remove max_write_behind setting limit

2025-05-30T07:47:23+00:00

The comments said 'vaule in kB', while the value actually means the
number of write_behind IOs. And since md-bitmap will automatically
adjust the value to max COUNTER_MAX / 2, there is no need to fail
early.

Also move some macros that is only used md-bitmap.c.

Link: https://lore.kernel.org/linux-raid/20250524061320.370630-15-yukuai1@huaweicloud.com
Signed-off-by: Yu Kuai 
Reviewed-by: Christoph Hellwig 
Reviewed-by: Hannes Reinecke 
Reviewed-by: Xiao Ni

md/md-bitmap: remove the last parameter for bimtap_ops->endwrite()

2025-01-13T16:56:10+00:00

For the case that IO failed for one rdev, the bit will be mark as NEEDED
in following cases:

1) If badblocks is set and rdev is not faulty;
2) If rdev is faulty;

Case 1) is useless because synchronize data to badblocks make no sense.
Case 2) can be replaced with mddev->degraded.

Also remove R1BIO_Degraded, R10BIO_Degraded and STRIPE_DEGRADED since
case 2) no longer use them.

Signed-off-by: Yu Kuai 
Link: https://lore.kernel.org/r/20250109015145.158868-3-yukuai1@huaweicloud.com
Signed-off-by: Song Liu

md/md-bitmap: factor behind write counters out from bitmap_{start/end}write()

2025-01-13T16:56:10+00:00

behind_write is only used in raid1, prepare to refactor
bitmap_{start/end}write(), there are no functional changes.

Signed-off-by: Yu Kuai 
Reviewed-by: Xiao Ni 
Link: https://lore.kernel.org/r/20250109015145.158868-2-yukuai1@huaweicloud.com
Signed-off-by: Song Liu

md/md-bitmap: make in memory structure internal

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

Now that struct bitmap_page and bitmap is not used externally anymore,
move them from md-bitmap.h to md-bitmap.c (expect that dm-raid is still
using define marco 'COUNTER_MAX').

Also fix some checkpatch warnings.

Signed-off-by: Yu Kuai 
Link: https://lore.kernel.org/r/20240826074452.1490072-43-yukuai1@huaweicloud.com
Signed-off-by: Song Liu

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 md_bitmap_wait_behind_writes() 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/20240826074452.1490072-41-yukuai1@huaweicloud.com
Signed-off-by: Song Liu

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

2024-08-27T19:43:15+00:00

So that the implementation won't be exposed, and it'll be possible
o invent a new bitmap by replacing bitmap_operations.

Signed-off-by: Yu Kuai 
Link: https://lore.kernel.org/r/20240826074452.1490072-40-yukuai1@huaweicloud.com
Signed-off-by: Song Liu

md/md-bitmap: merge md_bitmap_set_pages() into struct bitmap_operations

2024-08-27T19:43:15+00:00

o that the implementation won't be exposed, and it'll be possible
o invent a new bitmap by replacing bitmap_operations.

Signed-off-by: Yu Kuai 
Link: https://lore.kernel.org/r/20240826074452.1490072-39-yukuai1@huaweicloud.com
Signed-off-by: Song Liu