io_uring: make fallocate be hashed work

Like ftruncate and write, fallocate operations on the same file cannot
be executed in parallel, so it is better to make fallocate be hashed
work.

Signed-off-by: Fengnan Chang <changfengnan@bytedance.com>
Link: https://lore.kernel.org/r/20250623110218.61490-1-changfengnan@bytedance.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/io_uring/opdef.c b/io_uring/opdef.c
index 6e0882b051f93bae2974cc623678b199b39262e5..6de6229207a8b403bda999bf70d53e0077a95951 100644 (file)
--- a/io_uring/opdef.c
+++ b/io_uring/opdef.c
@@ -216,6 +216,7 @@ const struct io_issue_def io_issue_defs[] = {
        },
        [IORING_OP_FALLOCATE] = {
                .needs_file             = 1,
+               .hash_reg_file          = 1,
                .prep                   = io_fallocate_prep,
                .issue                  = io_fallocate,
        },