Hi Changheun, If I run blktest srp/001 then a kernel warning appears that I haven't seen before. I think this is a side-effect of the patch that limits the bio size. Please take a look. Thanks, Bart. WARNING: CPU: 1 PID: 15449 at block/bio.c:1034 __bio_iov_iter_get_pages+0x324/0x350 Call Trace: bio_iov_iter_get_pages+0x6c/0x360 __blkdev_direct_IO_simple+0x291/0x580 blkdev_direct_IO+0xb5/0xc0 generic_file_direct_write+0x10d/0x290 __generic_file_write_iter+0x120/0x290 blkdev_write_iter+0x16e/0x280 new_sync_write+0x268/0x380 vfs_write+0x3e0/0x4f0 ksys_write+0xd9/0x180 __x64_sys_write+0x43/0x50 do_syscall_64+0x32/0x80 entry_SYSCALL_64_after_hwframe+0x44/0xae
