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RDMA/rxe: Improve readability of ODP pagefault interface

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Use a meaningful constant explicitly instead of hard-coding a literal.

Signed-off-by: Daisuke Matsuda <matsuda-daisuke@fujitsu.com>
Link: https://patch.msgid.link/20250312065937.1787241-1-matsuda-daisuke@fujitsu.com
Reviewed-by: Zhu Yanjun <yanjun.zhu@linux.dev>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
This commit is contained in:
Daisuke Matsuda
2025-03-12 15:59:37 +09:00
committed by Leon Romanovsky
parent 8b6745b9f6
commit 0a924decd4
1 changed files with 7 additions and 5 deletions
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12
drivers/infiniband/sw/rxe/rxe_odp.c
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@@ -37,8 +37,9 @@ const struct mmu_interval_notifier_ops rxe_mn_ops = {
.invalidate = rxe_ib_invalidate_range,
};
#define RXE_PAGEFAULT_RDONLY BIT(1)
#define RXE_PAGEFAULT_SNAPSHOT BIT(2)
#define RXE_PAGEFAULT_DEFAULT 0
#define RXE_PAGEFAULT_RDONLY BIT(0)
#define RXE_PAGEFAULT_SNAPSHOT BIT(1)
static int rxe_odp_do_pagefault_and_lock(struct rxe_mr *mr, u64 user_va, int bcnt, u32 flags)
{
struct ib_umem_odp *umem_odp = to_ib_umem_odp(mr->umem);
@@ -222,7 +223,7 @@ int rxe_odp_mr_copy(struct rxe_mr *mr, u64 iova, void *addr, int length,
enum rxe_mr_copy_dir dir)
{
struct ib_umem_odp *umem_odp = to_ib_umem_odp(mr->umem);
u32 flags = 0;
u32 flags = RXE_PAGEFAULT_DEFAULT;
int err;
if (length == 0)
@@ -236,7 +237,7 @@ int rxe_odp_mr_copy(struct rxe_mr *mr, u64 iova, void *addr, int length,
break;
case RXE_FROM_MR_OBJ:
flags = RXE_PAGEFAULT_RDONLY;
flags |= RXE_PAGEFAULT_RDONLY;
break;
default:
@@ -312,7 +313,8 @@ int rxe_odp_atomic_op(struct rxe_mr *mr, u64 iova, int opcode,
struct ib_umem_odp *umem_odp = to_ib_umem_odp(mr->umem);
int err;
err = rxe_odp_map_range_and_lock(mr, iova, sizeof(char), 0);
err = rxe_odp_map_range_and_lock(mr, iova, sizeof(char),
RXE_PAGEFAULT_DEFAULT);
if (err < 0)
return err;