Commit 3121bfe7 authored Apr 09, 2009 by Miklos Szeredi

fuse: fix "direct_io" private mmap



MAP_PRIVATE mmap could return stale data from the cache for
"direct_io" files.  Fix this by flushing the cache on mmap. 

Found with a slightly modified fsx-linux.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>

parent ce60a2f1

fs/fuse/file.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -1298,6 +1298,8 @@ static int fuse_direct_mmap(struct file file, struct vm_area_struct vma)
		if (vma->vm_flags & VM_MAYSHARE)
		return -ENODEV;

		invalidate_inode_pages2(file->f_mapping);

		return generic_file_mmap(file, vma);
		}