LINUX: Detect NULL page during write_begin

[openafs.git] / src / afs / LINUX / osi_vnodeops.c

diff --git a/src/afs/LINUX/osi_vnodeops.c b/src/afs/LINUX/osi_vnodeops.c
index 9a070f2..966e98a 100644 (file)
--- a/src/afs/LINUX/osi_vnodeops.c
+++ b/src/afs/LINUX/osi_vnodeops.c
@@ -3082,6 +3082,10 @@ afs_linux_write_begin(struct file *file, struct address_space *mapping,
     int code;
 
     page = grab_cache_page_write_begin(mapping, index, flags);
+    if (!page) {
+        return -ENOMEM;
+    }
+
     *pagep = page;
 
     code = afs_linux_prepare_write(file, page, from, from + len);