Btrfs: Add code to support file creation time
This patch adds a new member to the 'struct btrfs_inode' structure to hold
the file creation time.
Signed-off-by: chandan <chandanrmail@gmail.com>
[refreshed, removed btrfs_inode_otime]
Signed-off-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Chris Mason <clm@fb.com>
diff --git a/fs/btrfs/btrfs_inode.h b/fs/btrfs/btrfs_inode.h
index 4aadadc..de5e4f2 100644
--- a/fs/btrfs/btrfs_inode.h
+++ b/fs/btrfs/btrfs_inode.h
@@ -185,6 +185,9 @@
struct btrfs_delayed_node *delayed_node;
+ /* File creation time. */
+ struct timespec i_otime;
+
struct inode vfs_inode;
};
diff --git a/fs/btrfs/delayed-inode.c b/fs/btrfs/delayed-inode.c
index 116eb4b..82f0c7c 100644
--- a/fs/btrfs/delayed-inode.c
+++ b/fs/btrfs/delayed-inode.c
@@ -1769,6 +1769,11 @@
inode->i_ctime.tv_sec);
btrfs_set_stack_timespec_nsec(&inode_item->ctime,
inode->i_ctime.tv_nsec);
+
+ btrfs_set_stack_timespec_sec(&inode_item->otime,
+ BTRFS_I(inode)->i_otime.tv_sec);
+ btrfs_set_stack_timespec_nsec(&inode_item->otime,
+ BTRFS_I(inode)->i_otime.tv_nsec);
}
int btrfs_fill_inode(struct inode *inode, u32 *rdev)
@@ -1810,6 +1815,11 @@
inode->i_ctime.tv_sec = btrfs_stack_timespec_sec(&inode_item->ctime);
inode->i_ctime.tv_nsec = btrfs_stack_timespec_nsec(&inode_item->ctime);
+ BTRFS_I(inode)->i_otime.tv_sec =
+ btrfs_stack_timespec_sec(&inode_item->otime);
+ BTRFS_I(inode)->i_otime.tv_nsec =
+ btrfs_stack_timespec_nsec(&inode_item->otime);
+
inode->i_generation = BTRFS_I(inode)->generation;
BTRFS_I(inode)->index_cnt = (u64)-1;
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 575164d..b029233 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -3535,6 +3535,11 @@
inode->i_ctime.tv_sec = btrfs_timespec_sec(leaf, &inode_item->ctime);
inode->i_ctime.tv_nsec = btrfs_timespec_nsec(leaf, &inode_item->ctime);
+ BTRFS_I(inode)->i_otime.tv_sec =
+ btrfs_timespec_sec(leaf, &inode_item->otime);
+ BTRFS_I(inode)->i_otime.tv_nsec =
+ btrfs_timespec_nsec(leaf, &inode_item->otime);
+
inode_set_bytes(inode, btrfs_inode_nbytes(leaf, inode_item));
BTRFS_I(inode)->generation = btrfs_inode_generation(leaf, inode_item);
BTRFS_I(inode)->last_trans = btrfs_inode_transid(leaf, inode_item);
@@ -3669,6 +3674,11 @@
btrfs_set_token_timespec_nsec(leaf, &item->ctime,
inode->i_ctime.tv_nsec, &token);
+ btrfs_set_token_timespec_sec(leaf, &item->otime,
+ BTRFS_I(inode)->i_otime.tv_sec, &token);
+ btrfs_set_token_timespec_nsec(leaf, &item->otime,
+ BTRFS_I(inode)->i_otime.tv_nsec, &token);
+
btrfs_set_token_inode_nbytes(leaf, item, inode_get_bytes(inode),
&token);
btrfs_set_token_inode_generation(leaf, item, BTRFS_I(inode)->generation,
@@ -5260,7 +5270,10 @@
inode->i_op = &btrfs_dir_ro_inode_operations;
inode->i_fop = &simple_dir_operations;
inode->i_mode = S_IFDIR | S_IRUGO | S_IWUSR | S_IXUGO;
- inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
+ inode->i_mtime = CURRENT_TIME;
+ inode->i_atime = inode->i_mtime;
+ inode->i_ctime = inode->i_mtime;
+ BTRFS_I(inode)->i_otime = inode->i_mtime;
return inode;
}
@@ -5828,7 +5841,12 @@
inode_init_owner(inode, dir, mode);
inode_set_bytes(inode, 0);
- inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
+
+ inode->i_mtime = CURRENT_TIME;
+ inode->i_atime = inode->i_mtime;
+ inode->i_ctime = inode->i_mtime;
+ BTRFS_I(inode)->i_otime = inode->i_mtime;
+
inode_item = btrfs_item_ptr(path->nodes[0], path->slots[0],
struct btrfs_inode_item);
memset_extent_buffer(path->nodes[0], 0, (unsigned long)inode_item,
@@ -8577,6 +8595,9 @@
ei->delayed_node = NULL;
+ ei->i_otime.tv_sec = 0;
+ ei->i_otime.tv_nsec = 0;
+
inode = &ei->vfs_inode;
extent_map_tree_init(&ei->extent_tree);
extent_io_tree_init(&ei->io_tree, &inode->i_data);