f2fs: introduce trace_f2fs_replace_atomic_write_block

Commit 3db1de0e ("f2fs: change the current atomic write way")
removed old tracepoints, but it missed to add new one, this patch
fixes to introduce trace_f2fs_replace_atomic_write_block to trace
atomic_write commit flow.

Fixes: 3db1de0e ("f2fs: change the current atomic write way")
Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

fs/f2fs/segment.c

@@ -255,6 +255,9 @@ static int __replace_atomic_write_block(struct inode *inode, pgoff_t index,
 	}
 
 	f2fs_put_dnode(&dn);
+
+	trace_f2fs_replace_atomic_write_block(inode, F2FS_I(inode)->cow_inode,
+					index, *old_addr, new_addr, recover);
 	return 0;
 }
 

include/trace/events/f2fs.h

@@ -1290,6 +1290,43 @@ DEFINE_EVENT(f2fs__page, f2fs_vm_page_mkwrite,
 	TP_ARGS(page, type)
 );
 
+TRACE_EVENT(f2fs_replace_atomic_write_block,
+
+	TP_PROTO(struct inode *inode, struct inode *cow_inode, pgoff_t index,
+			block_t old_addr, block_t new_addr, bool recovery),
+
+	TP_ARGS(inode, cow_inode, index, old_addr, new_addr, recovery),
+
+	TP_STRUCT__entry(
+		__field(dev_t,	dev)
+		__field(ino_t,	ino)
+		__field(ino_t,	cow_ino)
+		__field(pgoff_t, index)
+		__field(block_t, old_addr)
+		__field(block_t, new_addr)
+		__field(bool, recovery)
+	),
+
+	TP_fast_assign(
+		__entry->dev		= inode->i_sb->s_dev;
+		__entry->ino		= inode->i_ino;
+		__entry->cow_ino	= cow_inode->i_ino;
+		__entry->index		= index;
+		__entry->old_addr	= old_addr;
+		__entry->new_addr	= new_addr;
+		__entry->recovery	= recovery;
+	),
+
+	TP_printk("dev = (%d,%d), ino = %lu, cow_ino = %lu, index = %lu, "
+			"old_addr = 0x%llx, new_addr = 0x%llx, recovery = %d",
+		show_dev_ino(__entry),
+		__entry->cow_ino,
+		(unsigned long)__entry->index,
+		(unsigned long long)__entry->old_addr,
+		(unsigned long long)__entry->new_addr,
+		__entry->recovery)
+);
+
 TRACE_EVENT(f2fs_filemap_fault,
 
 	TP_PROTO(struct inode *inode, pgoff_t index, unsigned long ret),