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authorMichal Koutný <mkoutny@suse.com>2022-07-15 20:45:01 +0300
committerJens Axboe <axboe@kernel.dk>2022-07-25 03:39:18 +0300
commit48904229928d941ce1db181b991948387ab463cd (patch)
tree62cb6262d081bafbb5214d8bd5842adf05172242 /io_uring/io_uring.c
parent9b0fc3c054ff2eb13753104884f1045b5bb3a627 (diff)
downloadlinux-48904229928d941ce1db181b991948387ab463cd.tar.xz
io_uring: Don't require reinitable percpu_ref
The commit 8bb649ee1da3 ("io_uring: remove ring quiesce for io_uring_register") removed the worklow relying on reinit/resurrection of the percpu_ref, hence, initialization with that requested is a relic. This is based on code review, this causes no real bug (and theoretically can't). Technically it's a revert of commit 214828962dea ("io_uring: initialize percpu refcounters using PERCU_REF_ALLOW_REINIT") but since the flag omission is now justified, I'm not making this a revert. Fixes: 8bb649ee1da3 ("io_uring: remove ring quiesce for io_uring_register") Signed-off-by: Michal Koutný <mkoutny@suse.com> Acked-by: Roman Gushchin <roman.gushchin@linux.dev> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'io_uring/io_uring.c')
-rw-r--r--io_uring/io_uring.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/io_uring/io_uring.c b/io_uring/io_uring.c
index f697ca4e8f55..624535c62565 100644
--- a/io_uring/io_uring.c
+++ b/io_uring/io_uring.c
@@ -289,7 +289,7 @@ static __cold struct io_ring_ctx *io_ring_ctx_alloc(struct io_uring_params *p)
ctx->dummy_ubuf->ubuf = -1UL;
if (percpu_ref_init(&ctx->refs, io_ring_ctx_ref_free,
- PERCPU_REF_ALLOW_REINIT, GFP_KERNEL))
+ 0, GFP_KERNEL))
goto err;
ctx->flags = p->flags;