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| author | Ming Lei <ming.lei@redhat.com> | 2026-03-31 23:31:58 +0800 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2026-04-07 07:42:23 -0600 |
| commit | 2f1e9468bdcba7e7572e16defd3c516f24281f14 (patch) | |
| tree | f78c23955a35c32e4d46da19529d19b6a235472f /rust/kernel/interop/git@git.tavy.me:linux-stable.git | |
| parent | ec20aa44ac2629943c9b2b5524bcb55d778f746c (diff) | |
selftests/ublk: add shared memory zero-copy test
Add test_shmem_zc_01.sh which tests UBLK_IO_F_SHMEM_ZC on the null
target using a hugetlbfs shared buffer. Both kublk (--htlb) and fio
(--mem=mmaphuge:<path>) mmap the same hugetlbfs file with MAP_SHARED,
sharing physical pages. The kernel PFN match enables zero-copy I/O.
Uses standard fio --mem=mmaphuge:<path> (supported since fio 1.10),
no patched fio required.
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Link: https://patch.msgid.link/20260331153207.3635125-8-ming.lei@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'rust/kernel/interop/git@git.tavy.me:linux-stable.git')
0 files changed, 0 insertions, 0 deletions