[PATCH 2/2] rpdfs: Set the inode creation time

Setting inode creation time is slightly trickier than a/m/ctime
because it's not tracked in the VFS inode. Add a function to set
creation time at inode creation time.

Signed-off-by: Valerie Aurora <[email protected]>
---
 fs/rpdfs/dir.c   |  3 +++
 fs/rpdfs/inode.c | 17 +++++++++++++++++
 fs/rpdfs/inode.h |  2 ++
 3 files changed, 22 insertions(+)

diff --git a/fs/rpdfs/dir.c b/fs/rpdfs/dir.c
index 7d51c133cba0..71524e3f2839 100644
--- a/fs/rpdfs/dir.c
+++ b/fs/rpdfs/dir.c
@@ -468,6 +468,9 @@ static struct inode *create_new_inode(struct mnt_idmap *idmap, struct inode *dir
 		apply_add_entry(rfi, &txn, dir, kd);
 	}
 
+	/* creation time is not tracked in the vfs inode so do it by hand */
+	rpdfs_inode_crtime_set(rfi, &txn, inode, inode_get_atime(inode));
+
 	/* sync changes to vfs inodes with inode blocks */
 	rpdfs_inode_txn_update(rfi, &txn, dir);
 	rpdfs_inode_txn_update(rfi, &txn, inode);
diff --git a/fs/rpdfs/inode.c b/fs/rpdfs/inode.c
index bdd31ce0b6da..4d24fa00512c 100644
--- a/fs/rpdfs/inode.c
+++ b/fs/rpdfs/inode.c
@@ -359,6 +359,23 @@ void rpdfs_inode_txn_update(struct rpdfs_fs_info *rfi, struct rpdfs_transaction
 	ri->refresh_wcount = hnd->wcount;
 }
 
+/*
+ * Set the inode creation time.
+ */
+void rpdfs_inode_crtime_set(struct rpdfs_fs_info *rfi, struct rpdfs_transaction *txn,
+			    struct inode *inode, struct timespec64 ts)
+{
+	struct rpdfs_block_handle *hnd = NULL;
+	struct rpdfs_inode *rinode;
+	int ret;
+
+	ret = rpdfs_txn_use_prepared(rfi, txn, rpdfs_inode_bnr(inode), &hnd, RBAF_WRITE);
+	BUG_ON(ret < 0); /* caller must have prepared */
+
+	rinode = hnd->data;
+	rinode->crtime_nsec = cpu_ts64_to_le64_ns(ts);
+}
+
 /*
  * Start writing a previously dirtied vfs inode.
  *
diff --git a/fs/rpdfs/inode.h b/fs/rpdfs/inode.h
index 6b0fddb7f0fb..3ca3d248e338 100644
--- a/fs/rpdfs/inode.h
+++ b/fs/rpdfs/inode.h
@@ -69,6 +69,8 @@ int rpdfs_inode_txn_prepare(struct rpdfs_fs_info *rfi, struct rpdfs_transaction
 			    struct inode *inode, rbaf_t rbaf);
 void rpdfs_inode_txn_update(struct rpdfs_fs_info *rfi, struct rpdfs_transaction *txn,
 			    struct inode *inode);
+void rpdfs_inode_crtime_set(struct rpdfs_fs_info *rfi, struct rpdfs_transaction *txn,
+			    struct inode *inode, struct timespec64 ts);
 
 int rpdfs_inode_init(void);
 void rpdfs_inode_exit(void);
-- 
2.49.0