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| author | Hao Xu <haoxu@linux.alibaba.com> | 2021-09-07 06:22:43 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2021-09-10 15:24:51 +0300 |
| commit | 32c2d33e0b7c4ea53284d5d9435dd022b582c8cf (patch) | |
| tree | 12b82b86bc5b144d6284bf845595223e7d5ab719 | |
| parent | 2ae2eb9dde18979b40629dd413b9adbd6c894cdf (diff) | |
| download | linux-32c2d33e0b7c4ea53284d5d9435dd022b582c8cf.tar.xz | |
io_uring: fix off-by-one in BUILD_BUG_ON check of __REQ_F_LAST_BIT
Build check of __REQ_F_LAST_BIT should be larger than, not equal or larger
than. It's perfectly valid to have __REQ_F_LAST_BIT be 32, as that means
that the last valid bit is 31 which does fit in the type.
Signed-off-by: Hao Xu <haoxu@linux.alibaba.com>
Link: https://lore.kernel.org/r/20210907032243.114190-1-haoxu@linux.alibaba.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
| -rw-r--r-- | fs/io_uring.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/io_uring.c b/fs/io_uring.c index ffd91844b2e5..f795ad281038 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -10863,7 +10863,7 @@ static int __init io_uring_init(void) BUILD_BUG_ON(SQE_VALID_FLAGS >= (1 << 8)); BUILD_BUG_ON(ARRAY_SIZE(io_op_defs) != IORING_OP_LAST); - BUILD_BUG_ON(__REQ_F_LAST_BIT >= 8 * sizeof(int)); + BUILD_BUG_ON(__REQ_F_LAST_BIT > 8 * sizeof(int)); req_cachep = KMEM_CACHE(io_kiocb, SLAB_HWCACHE_ALIGN | SLAB_PANIC | SLAB_ACCOUNT); |