linux-kernel - [PATCH 01/10] cramfs: Convert to use vmf_insert

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Message-Id: <20180828145728.11873-2-willy@infradead.org>
Date:   Tue, 28 Aug 2018 07:57:19 -0700
From:   Matthew Wilcox <willy@...radead.org>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     Matthew Wilcox <willy@...radead.org>,
        Nicolas Pitre <nicolas.pitre@...aro.org>,
        Souptick Joarder <jrdr.linux@...il.com>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 01/10] cramfs: Convert to use vmf_insert_mixed

cramfs is the only remaining user of vm_insert_mixed; convert it.

Signed-off-by: Matthew Wilcox <willy@...radead.org>
---
 fs/cramfs/inode.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/fs/cramfs/inode.c b/fs/cramfs/inode.c
index f408994fc632..b72449c19cd1 100644
--- a/fs/cramfs/inode.c
+++ b/fs/cramfs/inode.c
@@ -417,10 +417,15 @@ static int cramfs_physmem_mmap(struct file *file, struct vm_area_struct *vma)
 		 */
 		int i;
 		vma->vm_flags |= VM_MIXEDMAP;
-		for (i = 0; i < pages && !ret; i++) {
+		for (i = 0; i < pages; i++) {
+			vm_fault_t vmf;
 			unsigned long off = i * PAGE_SIZE;
 			pfn_t pfn = phys_to_pfn_t(address + off, PFN_DEV);
-			ret = vm_insert_mixed(vma, vma->vm_start + off, pfn);
+			vmf = vmf_insert_mixed(vma, vma->vm_start + off, pfn);
+			if (vmf & VM_FAULT_ERROR) {
+				pages = i;
+				break;
+			}
 		}
 	}
 
-- 
2.18.0