Merge tag 'for-linus-20191012' of git://git.kernel.dk/linux-block

[linux-2.6-microblaze.git] / fs / 9p / vfs_file.c

diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c
index 4cc966a..fe7f0bd 100644 (file)
--- a/fs/9p/vfs_file.c
+++ b/fs/9p/vfs_file.c
@@ -513,6 +513,7 @@ v9fs_mmap_file_mmap(struct file *filp, struct vm_area_struct *vma)
        v9inode = V9FS_I(inode);
        mutex_lock(&v9inode->v_mutex);
        if (!v9inode->writeback_fid &&
+           (vma->vm_flags & VM_SHARED) &&
            (vma->vm_flags & VM_WRITE)) {
                /*
                 * clone a fid and add it to writeback_fid
@@ -614,6 +615,8 @@ static void v9fs_mmap_vm_close(struct vm_area_struct *vma)
                        (vma->vm_end - vma->vm_start - 1),
        };
 
+       if (!(vma->vm_flags & VM_SHARED))
+               return;
 
        p9_debug(P9_DEBUG_VFS, "9p VMA close, %p, flushing", vma);