This is a note to let you know that I've just added the patch titled RDMA/umem: Fix signature of stub ib_umem_find_best_pgsz() to the 5.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: rdma-umem-fix-signature-of-stub-ib_umem_find_best_pg.patch and it can be found in the queue-5.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 5199f77b205745df6c4a1c22ee13dd14bd1217b9 Author: Jason Gunthorpe <jgg@xxxxxxxxxx> Date: Tue Aug 25 15:17:08 2020 -0300 RDMA/umem: Fix signature of stub ib_umem_find_best_pgsz() [ Upstream commit 61690d01db32eb1f94adc9ac2b8bb741d34e4671 ] The original function returns unsigned long and 0 on failure. Fixes: 4a35339958f1 ("RDMA/umem: Add API to find best driver supported page size in an MR") Link: https://lore.kernel.org/r/0-v1-982a13cc5c6d+501ae-fix_best_pgsz_stub_jgg@xxxxxxxxxx Reviewed-by: Gal Pressman <galpress@xxxxxxxxxx> Acked-by: Shiraz Saleem <shiraz.saleem@xxxxxxxxx> Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/include/rdma/ib_umem.h b/include/rdma/ib_umem.h index 71f573a418bf0..07a764eb692ee 100644 --- a/include/rdma/ib_umem.h +++ b/include/rdma/ib_umem.h @@ -68,10 +68,11 @@ static inline int ib_umem_copy_from(void *dst, struct ib_umem *umem, size_t offs size_t length) { return -EINVAL; } -static inline int ib_umem_find_best_pgsz(struct ib_umem *umem, - unsigned long pgsz_bitmap, - unsigned long virt) { - return -EINVAL; +static inline unsigned long ib_umem_find_best_pgsz(struct ib_umem *umem, + unsigned long pgsz_bitmap, + unsigned long virt) +{ + return 0; } #endif /* CONFIG_INFINIBAND_USER_MEM */