Zizhi Wo <wozizhi@xxxxxxxxxx> wrote: > In the __cachefiles_prepare_write function, DIO aligns blocks using > PAGE_SIZE as the unit. And currently cachefiles_add_cache() binds > cache->bsize with the requirement that it must not exceed PAGE_SIZE. > However, if cache->bsize is smaller than PAGE_SIZE, the calculated block > count will be incorrect in __cachefiles_prepare_write(). > > Set the block size to cache->bsize to resolve this issue. Have you tested this with 9p, afs, cifs, ceph and/or nfs? This may cause an issue there as it assumed that the cache file will be padded out to PAGE_SIZE (see cachefiles_adjust_size()). David
