linux-toradex.git/drivers/md/raid5.c, branch v6.12

md/raid5: rename wait_for_overlap to wait_for_reshape

2024-08-29T16:37:10+00:00

The only remaining uses of wait_for_overlap are related to reshape so
rename it accordingly.

Signed-off-by: Artur Paszkiewicz 
Link: https://lore.kernel.org/r/20240827153536.6743-4-artur.paszkiewicz@intel.com
Signed-off-by: Song Liu

md/raid5: only add to wq if reshape is in progress

2024-08-29T16:37:10+00:00

Now that actual overlaps are not handled on the wait_for_overlap wq
anymore, the remaining cases when we wait on this wq are limited to
reshape. If reshape is not in progress, don't add to the wq in
raid5_make_request() because add_wait_queue() / remove_wait_queue()
operations take a spinlock and cause noticeable contention when multiple
threads are submitting requests to the mddev.

Signed-off-by: Artur Paszkiewicz 
Link: https://lore.kernel.org/r/20240827153536.6743-3-artur.paszkiewicz@intel.com
Signed-off-by: Song Liu

md/raid5: use wait_on_bit() for R5_Overlap

2024-08-29T16:37:10+00:00

Convert uses of wait_for_overlap wait queue with R5_Overlap bit to
wait_on_bit() / wake_up_bit().

Signed-off-by: Artur Paszkiewicz 
Link: https://lore.kernel.org/r/20240827153536.6743-2-artur.paszkiewicz@intel.com
Signed-off-by: Song Liu

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

2024-08-27T19:43:15+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/20240826074452.1490072-36-yukuai1@huaweicloud.com
Signed-off-by: Song Liu

md/md-bitmap: pass in mddev directly for md_bitmap_resize()

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

And move the condition "if (mddev->bitmap)" into md_bitmap_resize() as
well, on the one hand make code cleaner, on the other hand try not to
access bitmap directly.

Since we are here, also change the parameter 'init' from int to bool.

Signed-off-by: Yu Kuai 
Link: https://lore.kernel.org/r/20240826074452.1490072-35-yukuai1@huaweicloud.com
Signed-off-by: Song Liu

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

2024-08-27T19:43:14+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/20240826074452.1490072-33-yukuai1@huaweicloud.com
Signed-off-by: Song Liu

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

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

2024-08-27T19:42:42+00:00

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

Also change the parameter from bitmap to mddev, to avoid access
bitmap outside md-bitmap.c as much as possible.

Signed-off-by: Yu Kuai 
Link: https://lore.kernel.org/r/20240826074452.1490072-30-yukuai1@huaweicloud.com
Signed-off-by: Song Liu

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

2024-08-27T17:14:17+00:00

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

Also change the parameter from bitmap to mddev, to avoid access
bitmap outside md-bitmap.c as much as possible.

Signed-off-by: Yu Kuai 
Link: https://lore.kernel.org/r/20240826074452.1490072-29-yukuai1@huaweicloud.com
Signed-off-by: Song Liu

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

2024-08-27T17:14:17+00:00

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

Also change the parameter from bitmap to mddev, to avoid access
bitmap outside md-bitmap.c as much as possible.

Signed-off-by: Yu Kuai 
Link: https://lore.kernel.org/r/20240826074452.1490072-28-yukuai1@huaweicloud.com
Signed-off-by: Song Liu