On 11/29/19 6:53 AM, Christophe Leroy wrote:
CC fs/io_uring.ofs/io_uring.c: In function ‘loop_rw_iter’: fs/io_uring.c:1628:21: error: implicit declaration of function ‘kmap’ [-Werror=implicit-function-declaration] iovec.iov_base = kmap(iter->bvec->bv_page) ^ fs/io_uring.c:1628:19: warning: assignment makes pointer from integer without a cast [-Wint-conversion] iovec.iov_base = kmap(iter->bvec->bv_page) ^ fs/io_uring.c:1643:4: error: implicit declaration of function ‘kunmap’ [-Werror=implicit-function-declaration] kunmap(iter->bvec->bv_page); ^
Reverting commit 311ae9e159d8 ("io_uring: fix dead-hung for non-iter fixed rw") clears the failure.
Most likely an #include is missing.
Huh weird how the build bots didn't catch that. Does the below work?
diff --git a/fs/io_uring.c b/fs/io_uring.c index 2c2e8c25da01..745eb005fefe 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -69,6 +69,7 @@ #include <linux/nospec.h> #include <linux/sizes.h> #include <linux/hugetlb.h> +#include <linux/highmem.h>
#define CREATE_TRACE_POINTS #include <trace/events/io_uring.h>