| Message ID | 20210923130814.140814-6-cgxu519@mykernel.net (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | implement containerized syncfs for overlayfs | expand |
diff --git a/fs/overlayfs/file.c b/fs/overlayfs/file.c index d081faa55e83..f9dc5249c183 100644 --- a/fs/overlayfs/file.c +++ b/fs/overlayfs/file.c @@ -482,6 +482,12 @@ static int ovl_mmap(struct file *file, struct vm_area_struct *vma) revert_creds(old_cred); ovl_file_accessed(file); + if (!ret) { + if (ovl_inode_upper(file_inode(file)) && + vma->vm_flags & VM_SHARED) + ovl_mark_inode_dirty(file_inode(file)); + } + return ret; }
Overlayfs cannot be notified when mmapped area gets dirty, so we need to proactively mark inode dirty in ->mmap operation. Signed-off-by: Chengguang Xu <cgxu519@mykernel.net> --- fs/overlayfs/file.c | 6 ++++++ 1 file changed, 6 insertions(+)