On 7/27/23 17:55, Qi Zheng wrote: >>> goto err; >>> } >>> + zmd->mblk_shrinker->count_objects = dmz_mblock_shrinker_count; >>> + zmd->mblk_shrinker->scan_objects = dmz_mblock_shrinker_scan; >>> + zmd->mblk_shrinker->seeks = DEFAULT_SEEKS; >>> + zmd->mblk_shrinker->private_data = zmd; >>> + >>> + shrinker_register(zmd->mblk_shrinker); >> >> I fail to see how this new shrinker API is better... Why isn't there a >> shrinker_alloc_and_register() function ? That would avoid adding all this code >> all over the place as the new API call would be very similar to the current >> shrinker_register() call with static allocation. > > In some registration scenarios, memory needs to be allocated in advance. > So we continue to use the previous prealloc/register_prepared() > algorithm. The shrinker_alloc_and_register() is just a helper function > that combines the two, and this increases the number of APIs that > shrinker exposes to the outside, so I choose not to add this helper. And that results in more code in many places instead of less code + a simple inline helper in the shrinker header file... So not adding that super simple helper is not exactly the best choice in my opinion. -- Damien Le Moal Western Digital Research -- dm-devel mailing list dm-devel@xxxxxxxxxx https://listman.redhat.com/mailman/listinfo/dm-devel
