Hi all, After merging the block tree, today's linux-next build (powerpc ppc64_defconfig) produced this warning: fs/io_uring.c: In function 'io_close': fs/io_uring.c:3415:3: warning: ignoring return value of 'refcount_inc_not_zero', declared with attribute warn_unused_result [-Wunused-result] 3415 | refcount_inc_not_zero(&req->refs); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Introduced by commit 62e0c6b73a2c ("io_uring: make submission ref putting consistent") -- Cheers, Stephen Rothwell