diff options
Diffstat (limited to 'fs/ocfs2/mmap.c')
| -rw-r--r-- | fs/ocfs2/mmap.c | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/fs/ocfs2/mmap.c b/fs/ocfs2/mmap.c index 83934e3..51b0204 100644 --- a/fs/ocfs2/mmap.c +++ b/fs/ocfs2/mmap.c @@ -82,16 +82,27 @@ static struct vm_operations_struct ocfs2_file_vm_ops = { int ocfs2_mmap(struct file *file, struct vm_area_struct *vma) { + int ret = 0, lock_level = 0; + struct ocfs2_super *osb = OCFS2_SB(file->f_dentry->d_inode->i_sb); + /* We don't want to support shared writable mappings yet. */ - if (((vma->vm_flags & VM_SHARED) || (vma->vm_flags & VM_MAYSHARE)) - && ((vma->vm_flags & VM_WRITE) || (vma->vm_flags & VM_MAYWRITE))) { + if (!ocfs2_mount_local(osb) && + ((vma->vm_flags & VM_SHARED) || (vma->vm_flags & VM_MAYSHARE)) && + ((vma->vm_flags & VM_WRITE) || (vma->vm_flags & VM_MAYWRITE))) { mlog(0, "disallow shared writable mmaps %lx\n", vma->vm_flags); /* This is -EINVAL because generic_file_readonly_mmap * returns it in a similar situation. */ return -EINVAL; } - file_accessed(file); + ret = ocfs2_meta_lock_atime(file->f_dentry->d_inode, + file->f_vfsmnt, &lock_level); + if (ret < 0) { + mlog_errno(ret); + goto out; + } + ocfs2_meta_unlock(file->f_dentry->d_inode, lock_level); +out: vma->vm_ops = &ocfs2_file_vm_ops; return 0; } |
