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authorMiklos Szeredi <mszeredi@redhat.com>2018-07-18 16:44:41 +0300
committerMiklos Szeredi <mszeredi@redhat.com>2018-07-18 16:44:41 +0300
commitd1d04ef8572bc8c22265057bd3d5a79f223f8f52 (patch)
tree1271b2ebd9542e0070b0b3830b0bad17c76ca4ea /fs/overlayfs/Makefile
parente8c985bace1351c5f2d7a6f0d8ff3e677b58abb5 (diff)
downloadlinux-d1d04ef8572bc8c22265057bd3d5a79f223f8f52.tar.xz
ovl: stack file ops
Implement file operations on a regular overlay file. The underlying file is opened separately and cached in ->private_data. It might be worth making an exception for such files when accounting in nr_file to confirm to userspace expectations. We are only adding a small overhead (248bytes for the struct file) since the real inode and dentry are pinned by overlayfs anyway. This patch doesn't have any effect, since the vfs will use d_real() to find the real underlying file to open. The patch at the end of the series will actually enable this functionality. AV: make it use open_with_fake_path(), don't mess with override_creds SzM: still need to mess with override_creds() until no fs uses current_cred() in their open method. Signed-off-by: Miklos Szeredi <mszeredi@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/overlayfs/Makefile')
-rw-r--r--fs/overlayfs/Makefile4
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/overlayfs/Makefile b/fs/overlayfs/Makefile
index 30802347a020..46e1ff8ac056 100644
--- a/fs/overlayfs/Makefile
+++ b/fs/overlayfs/Makefile
@@ -4,5 +4,5 @@
obj-$(CONFIG_OVERLAY_FS) += overlay.o
-overlay-objs := super.o namei.o util.o inode.o dir.o readdir.o copy_up.o \
- export.o
+overlay-objs := super.o namei.o util.o inode.o file.o dir.o readdir.o \
+ copy_up.o export.o