[PATCH 12/73] whiteout: Define flags and operations for opaque inodes [ver #2]
From: David Howells <dhowells@redhat.com>
Date: 2012-02-21 17:58:58
Also in:
lkml
Subsystem:
filesystems (vfs and infrastructure), the rest · Maintainers:
Alexander Viro, Christian Brauner, Linus Torvalds
From: Valerie Aurora <redacted> Opaque directories are the directory equivalent of whiteouts. Define the generic opaque inode flags and operations. Original-author: Valerie Aurora [off-list ref] Signed-off-by: David Howells <dhowells@redhat.com> --- include/linux/fs.h | 4 ++++ 1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/include/linux/fs.h b/include/linux/fs.h
index b8276c0..ab36080 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h@@ -241,6 +241,7 @@ struct inodes_stat_t { #define S_IMA 1024 /* Inode has an associated IMA struct */ #define S_AUTOMOUNT 2048 /* Automount/referral quasi-directory */ #define S_NOSEC 4096 /* no suid or xattr security attributes */ +#define S_OPAQUE 8192 /* Directory is opaque */ /* * Note that nosuid etc flags are inode-specific: setting some file-system
@@ -278,6 +279,7 @@ struct inodes_stat_t { #define IS_IMA(inode) ((inode)->i_flags & S_IMA) #define IS_AUTOMOUNT(inode) ((inode)->i_flags & S_AUTOMOUNT) #define IS_NOSEC(inode) ((inode)->i_flags & S_NOSEC) +#define IS_OPAQUE(inode) ((inode)->i_flags & S_OPAQUE) /* the read-only stuff doesn't really belong here, but any other place is probably as bad and I don't want to create yet another include file. */
@@ -362,9 +364,11 @@ struct inodes_stat_t { #define FS_NOTAIL_FL 0x00008000 /* file tail should not be merged */ #define FS_DIRSYNC_FL 0x00010000 /* dirsync behaviour (directories only) */ #define FS_TOPDIR_FL 0x00020000 /* Top of directory hierarchies*/ +/* 0x00040000 is used by ext4 */ #define FS_EXTENT_FL 0x00080000 /* Extents */ #define FS_DIRECTIO_FL 0x00100000 /* Use direct i/o */ #define FS_NOCOW_FL 0x00800000 /* Do not cow file */ +#define FS_OPAQUE_FL 0x04000000 /* Dir is opaque */ #define FS_RESERVED_FL 0x80000000 /* reserved for ext2 lib */ #define FS_FL_USER_VISIBLE 0x0003DFFF /* User visible flags */