[RFC PATCH 3/6] Btrfs: add support for setting btime
From: Omar Sandoval <osandov@osandov.com>
Date: 2019-02-14 10:01:06
Also in:
linux-api, linux-btrfs, linux-f2fs-devel, linux-fsdevel, linux-xfs
Subsystem:
btrfs file system, filesystems (vfs and infrastructure), the rest · Maintainers:
Chris Mason, David Sterba, Alexander Viro, Christian Brauner, Linus Torvalds
From: Omar Sandoval <redacted> The Btrfs inode format has always included btime (under the name otime), so setting it is trivial. Signed-off-by: Omar Sandoval <redacted> --- fs/btrfs/inode.c | 2 ++ fs/btrfs/super.c | 4 ++-- 2 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 5c349667c761..49ad777d8057 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c@@ -5153,6 +5153,8 @@ static int btrfs_setattr(struct dentry *dentry, struct iattr *attr) if (attr->ia_valid) { setattr_copy(inode, attr); + if (attr->ia_valid & ATTR_BTIME) + BTRFS_I(inode)->i_otime = attr->ia_btime; inode_inc_iversion(inode); err = btrfs_dirty_inode(inode);
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 0a3f122dd61f..2af368cad2aa 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c@@ -2140,7 +2140,7 @@ static struct file_system_type btrfs_fs_type = { .name = "btrfs", .mount = btrfs_mount, .kill_sb = btrfs_kill_super, - .fs_flags = FS_REQUIRES_DEV | FS_BINARY_MOUNTDATA, + .fs_flags = FS_REQUIRES_DEV | FS_BINARY_MOUNTDATA | FS_HAS_BTIME, }; static struct file_system_type btrfs_root_fs_type = {
@@ -2148,7 +2148,7 @@ static struct file_system_type btrfs_root_fs_type = { .name = "btrfs", .mount = btrfs_mount_root, .kill_sb = btrfs_kill_super, - .fs_flags = FS_REQUIRES_DEV | FS_BINARY_MOUNTDATA, + .fs_flags = FS_REQUIRES_DEV | FS_BINARY_MOUNTDATA | FS_HAS_BTIME, }; MODULE_ALIAS_FS("btrfs");
--
2.20.1