io_uring: make fallocate be hashed work

[ Upstream commit 88a80066af1617fab444776135d840467414beb6 ]

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>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/io_uring/opdef.c b/io_uring/opdef.c
index 3b9c6489b8b6d2732b1e349b1184a09a367c9f8b..2d0a7db940fdb0cd30a31f9c1e7dd2041b0373b0 100644 (file)
--- a/io_uring/opdef.c
+++ b/io_uring/opdef.c
@@ -202,6 +202,7 @@ 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,
        },