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The checking logic is the same for both, so the common code can be extracted for reuse. Extract the common code as io_validate_entries function. Changes: V1->V2:: - Replace function name 'io_validate_entries' with 'io_validate_ring_entries' to enhance readability. - Removed unnecessary parentheses. - Line Wrapping. ==================== Signed-off-by: Xin Wang --- io_uring/io_uring.c | 27 +++++++++++++++------------ 1 file changed, 15 insertions(+), 12 deletions(-) diff --git a/io_uring/io_uring.c b/io_uring/io_uring.c index cd9a137ad6ce..4c3580229283 100644 --- a/io_uring/io_uring.c +++ b/io_uring/io_uring.c @@ -3819,6 +3819,19 @@ static struct file *io_uring_get_file(struct io_ring_ctx *ctx) O_RDWR | O_CLOEXEC, NULL); } +static bool io_validate_ring_entries(unsigned int *entries, + unsigned int max_entries, __u32 flags) +{ + if (!*entries) + return false; + if (*entries > max_entries) { + if (!(flags & IORING_SETUP_CLAMP)) + return false; + *entries = max_entries; + } + return true; +} + static __cold int io_uring_create(unsigned entries, struct io_uring_params *p, struct io_uring_params __user *params) { @@ -3827,13 +3840,8 @@ static __cold int io_uring_create(unsigned entries, struct io_uring_params *p, struct file *file; int ret; - if (!entries) + if (!io_validate_ring_entries(&entries, IORING_MAX_ENTRIES, p->flags)) return -EINVAL; - if (entries > IORING_MAX_ENTRIES) { - if (!(p->flags & IORING_SETUP_CLAMP)) - return -EINVAL; - entries = IORING_MAX_ENTRIES; - } if ((p->flags & IORING_SETUP_REGISTERED_FD_ONLY) && !(p->flags & IORING_SETUP_NO_MMAP)) @@ -3854,13 +3862,8 @@ static __cold int io_uring_create(unsigned entries, struct io_uring_params *p, * to a power-of-two, if it isn't already. We do NOT impose * any cq vs sq ring sizing. */ - if (!p->cq_entries) + if (!io_validate_ring_entries(&p->cq_entries, IORING_MAX_CQ_ENTRIES, p->flags)) return -EINVAL; - if (p->cq_entries > IORING_MAX_CQ_ENTRIES) { - if (!(p->flags & IORING_SETUP_CLAMP)) - return -EINVAL; - p->cq_entries = IORING_MAX_CQ_ENTRIES; - } p->cq_entries = roundup_pow_of_two(p->cq_entries); if (p->cq_entries < p->sq_entries) return -EINVAL; -- 2.25.1