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See http://www.infradead.org/rpr.html X-CLX-Shades: MLX X-CLX-Response: 1TFkXGR0aEQpMehceGhMRCllNF2dmchEKWUkXGnEaEBp3BhkfGnEZGxwdEBp 3BhgaBhoRClleF2NjeREKSUYXRVhLSUZPdVpYRU5fSV5DRUQZdU9LEQpDThceX3JlWURjb0NLYH JhHEtYGn0Te1xhZmNedU1HeW1SWhEKWFwXHwQaBBsZHgdIHkseSRJLTgUbGgQbGhoEHhIEHxAbH hofGhEKXlkXeWd9RBkRCk1cFx4fExEKTFoXaG1NTV0RCkxGF2xraxEKQ1oXGxMSBBsZHQQYGhgE GxkZEQpCXhcbEQpEXhcYEQpESRcbGREKQkYXbhNTc1hfe0NFTk0RCkJcFxoRCkJFF296T1xvZ3o cbBIeEQpCThdvHGxvQ1JPEm8THxEKQkwXbmVne0JyRlJrGhkRCkJsF2BnHWB6Yh5PRBNwEQpCQB d6flNCZEB7RQVaWBEKQlgXYn1veQFPGBlwcHsRCnBoF3odXGJjbH5eYGEfEBoRCnBoF2Ybbm4SZ xJGRwEdEBoRCnBoF2xwTHkYWx8YY2dfEBoRCnBoF2VERWFdS3xGeHBrEBoRCnBoF2wTRnNQE0IT fGYaEBoRCnBsF28BfkNbZ05vckhSEB0aEQpwQxd6G31/GxlLQH5HRxAZGhEKbX4XGhEKWE0XSxE g X-PDR: PASS X-Source-IP: 198.137.202.133 X-ServerName: bombadil.infradead.org X-Proofpoint-SPF-Result: None X-Proofpoint-Virus-Version: vendor=nai engine=5900 definitions=8894 signatures=668698 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 priorityscore=409 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=370 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1711220000 definitions=main-1805160057 X-Spam: Clean Cc: linux-arm-kernel@lists.infradead.org, linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-mm@kvack.org, ocfs2-devel@oss.oracle.com, devel@lists.orangefs.org, linux-fsdevel@vger.kernel.org, linux-mtd@lists.infradead.org, ceph-devel@vger.kernel.org, linux-ext4@vger.kernel.org, linux-btrfs@vger.kernel.org, lustre-devel@lists.lustre.org Subject: [Ocfs2-devel] [PATCH 11/14] ttm: separate errno from VM_FAULT_* values X-BeenThere: ocfs2-devel@oss.oracle.com X-Mailman-Version: 2.1.9 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: ocfs2-devel-bounces@oss.oracle.com Errors-To: ocfs2-devel-bounces@oss.oracle.com X-Proofpoint-Virus-Version: vendor=nai engine=5900 definitions=8894 signatures=668698 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=0 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 mlxscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1711220000 definitions=main-1805160057 X-Virus-Scanned: ClamAV using ClamSMTP Signed-off-by: Christoph Hellwig --- drivers/gpu/drm/ttm/ttm_bo_vm.c | 42 +++++++++++++++++---------------- 1 file changed, 22 insertions(+), 20 deletions(-) diff --git a/drivers/gpu/drm/ttm/ttm_bo_vm.c b/drivers/gpu/drm/ttm/ttm_bo_vm.c index 8eba95b3c737..255e7801f62c 100644 --- a/drivers/gpu/drm/ttm/ttm_bo_vm.c +++ b/drivers/gpu/drm/ttm/ttm_bo_vm.c @@ -43,10 +43,11 @@ #define TTM_BO_VM_NUM_PREFAULT 16 -static int ttm_bo_vm_fault_idle(struct ttm_buffer_object *bo, +static vm_fault_t ttm_bo_vm_fault_idle(struct ttm_buffer_object *bo, struct vm_fault *vmf) { - int ret = 0; + vm_fault_t ret = 0; + int err = 0; if (likely(!bo->moving)) goto out_unlock; @@ -77,8 +78,8 @@ static int ttm_bo_vm_fault_idle(struct ttm_buffer_object *bo, /* * Ordinary wait. */ - ret = dma_fence_wait(bo->moving, true); - if (unlikely(ret != 0)) { + err = dma_fence_wait(bo->moving, true); + if (unlikely(err != 0)) { ret = (ret != -ERESTARTSYS) ? VM_FAULT_SIGBUS : VM_FAULT_NOPAGE; goto out_unlock; @@ -104,7 +105,7 @@ static unsigned long ttm_bo_io_mem_pfn(struct ttm_buffer_object *bo, + page_offset; } -static int ttm_bo_vm_fault(struct vm_fault *vmf) +static vm_fault_t ttm_bo_vm_fault(struct vm_fault *vmf) { struct vm_area_struct *vma = vmf->vma; struct ttm_buffer_object *bo = (struct ttm_buffer_object *) @@ -115,7 +116,8 @@ static int ttm_bo_vm_fault(struct vm_fault *vmf) unsigned long pfn; struct ttm_tt *ttm = NULL; struct page *page; - int ret; + vm_fault_t ret; + int err; int i; unsigned long address = vmf->address; struct ttm_mem_type_manager *man = @@ -128,9 +130,9 @@ static int ttm_bo_vm_fault(struct vm_fault *vmf) * for reserve, and if it fails, retry the fault after waiting * for the buffer to become unreserved. */ - ret = ttm_bo_reserve(bo, true, true, NULL); - if (unlikely(ret != 0)) { - if (ret != -EBUSY) + err = ttm_bo_reserve(bo, true, true, NULL); + if (unlikely(err != 0)) { + if (err != -EBUSY) return VM_FAULT_NOPAGE; if (vmf->flags & FAULT_FLAG_ALLOW_RETRY) { @@ -162,8 +164,8 @@ static int ttm_bo_vm_fault(struct vm_fault *vmf) } if (bdev->driver->fault_reserve_notify) { - ret = bdev->driver->fault_reserve_notify(bo); - switch (ret) { + err = bdev->driver->fault_reserve_notify(bo); + switch (err) { case 0: break; case -EBUSY: @@ -191,13 +193,13 @@ static int ttm_bo_vm_fault(struct vm_fault *vmf) goto out_unlock; } - ret = ttm_mem_io_lock(man, true); - if (unlikely(ret != 0)) { + err = ttm_mem_io_lock(man, true); + if (unlikely(err != 0)) { ret = VM_FAULT_NOPAGE; goto out_unlock; } - ret = ttm_mem_io_reserve_vm(bo); - if (unlikely(ret != 0)) { + err = ttm_mem_io_reserve_vm(bo); + if (unlikely(err != 0)) { ret = VM_FAULT_SIGBUS; goto out_io_unlock; } @@ -265,21 +267,21 @@ static int ttm_bo_vm_fault(struct vm_fault *vmf) } if (vma->vm_flags & VM_MIXEDMAP) - ret = vm_insert_mixed(&cvma, address, + err = vm_insert_mixed(&cvma, address, __pfn_to_pfn_t(pfn, PFN_DEV)); else - ret = vm_insert_pfn(&cvma, address, pfn); + err = vm_insert_pfn(&cvma, address, pfn); /* * Somebody beat us to this PTE or prefaulting to * an already populated PTE, or prefaulting error. */ - if (unlikely((ret == -EBUSY) || (ret != 0 && i > 0))) + if (unlikely((err == -EBUSY) || (err != 0 && i > 0))) break; - else if (unlikely(ret != 0)) { + else if (unlikely(err != 0)) { ret = - (ret == -ENOMEM) ? VM_FAULT_OOM : VM_FAULT_SIGBUS; + (err == -ENOMEM) ? VM_FAULT_OOM : VM_FAULT_SIGBUS; goto out_io_unlock; }