Add ZFS specific mmap() checks

[zfs.git] / module / zfs / zpl_file.c

diff --git a/module/zfs/zpl_file.c b/module/zfs/zpl_file.c
index 0e90b78..fc2b813 100644 (file)
--- a/module/zfs/zpl_file.c
+++ b/module/zfs/zpl_file.c
@@ -240,9 +240,15 @@ zpl_write(struct file *filp, const char __user *buf, size_t len, loff_t *ppos)
 static int
 zpl_mmap(struct file *filp, struct vm_area_struct *vma)
 {
-       znode_t *zp = ITOZ(filp->f_mapping->host);
+       struct inode *ip = filp->f_mapping->host;
+       znode_t *zp = ITOZ(ip);
        int error;
 
+       error = -zfs_map(ip, vma->vm_pgoff, (caddr_t *)vma->vm_start,
+           (size_t)(vma->vm_end - vma->vm_start), vma->vm_flags);
+       if (error)
+               return (error);
+
        error = generic_file_mmap(filp, vma);
        if (error)
                return (error);