diff options
Diffstat (limited to 'fs/fuse/file.c')
| -rw-r--r-- | fs/fuse/file.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/fs/fuse/file.c b/fs/fuse/file.c index 3216dcf3ace0..3ce158f70927 100644 --- a/fs/fuse/file.c +++ b/fs/fuse/file.c @@ -2555,14 +2555,21 @@ static int fuse_file_mmap(struct file *file, struct vm_area_struct *vma) { struct fuse_file *ff = file->private_data; struct fuse_conn *fc = ff->fm->fc; + struct inode *inode = file_inode(file); int rc; /* DAX mmap is superior to direct_io mmap */ - if (FUSE_IS_DAX(file_inode(file))) + if (FUSE_IS_DAX(inode)) return fuse_dax_mmap(file, vma); - /* TODO: implement mmap to backing file */ + /* + * If inode is in passthrough io mode, because it has some file open + * in passthrough mode, either mmap to backing file or fail mmap, + * because mixing cached mmap and passthrough io mode is not allowed. + */ if (fuse_file_passthrough(ff)) + return fuse_passthrough_mmap(file, vma); + else if (fuse_inode_backing(get_fuse_inode(inode))) return -ENODEV; /* @@ -2589,7 +2596,7 @@ static int fuse_file_mmap(struct file *file, struct vm_area_struct *vma) * Also waits for parallel dio writers to go into serial mode * (exclusive instead of shared lock). */ - rc = fuse_file_cached_io_start(file_inode(file), ff); + rc = fuse_file_cached_io_start(inode, ff); if (rc) return rc; } |