Hi Jaegeuk, After merging the f2fs tree, today's linux-next build (x86_64 allmodconfig) failed like this: In file included from include/trace/define_trace.h:96, from include/trace/events/f2fs.h:1724, from fs/f2fs/super.c:35: include/trace/events/f2fs.h: In function 'trace_raw_output_f2fs_filemap_fault': include/trace/events/f2fs.h:1310:3: error: '_entry' undeclared (first use in this function); did you mean 'dentry'? _entry->ret) ^~~~~~ include/trace/trace_events.h:360:22: note: in definition of macro 'DECLARE_EVENT_CLASS' trace_seq_printf(s, print); \ ^~~~~ include/trace/trace_events.h:79:9: note: in expansion of macro 'PARAMS' PARAMS(print)); \ ^~~~~~ include/trace/events/f2fs.h:1287:1: note: in expansion of macro 'TRACE_EVENT' TRACE_EVENT(f2fs_filemap_fault, ^~~~~~~~~~~ include/trace/events/f2fs.h:1307:2: note: in expansion of macro 'TP_printk' TP_printk("dev = (%d,%d), ino = %lu, index = %lu, ret = %lx", ^~~~~~~~~ include/trace/events/f2fs.h:1310:3: note: each undeclared identifier is reported only once for each function it appears in _entry->ret) ^~~~~~ include/trace/trace_events.h:360:22: note: in definition of macro 'DECLARE_EVENT_CLASS' trace_seq_printf(s, print); \ ^~~~~ include/trace/trace_events.h:79:9: note: in expansion of macro 'PARAMS' PARAMS(print)); \ ^~~~~~ include/trace/events/f2fs.h:1287:1: note: in expansion of macro 'TRACE_EVENT' TRACE_EVENT(f2fs_filemap_fault, ^~~~~~~~~~~ include/trace/events/f2fs.h:1307:2: note: in expansion of macro 'TP_printk' TP_printk("dev = (%d,%d), ino = %lu, index = %lu, ret = %lx", ^~~~~~~~~ Caused by commit 90a238561901 ("f2fs: add tracepoint for f2fs_filemap_fault()") I have applied the following patch for today: From: Stephen Rothwell Date: Thu, 2 May 2019 10:44:46 +1000 Subject: [PATCH] f2fs: fix up for "f2fs: add tracepoint for f2fs_filemap_fault()" Fixes: 90a238561901 ("f2fs: add tracepoint for f2fs_filemap_fault()") Signed-off-by: Stephen Rothwell --- include/trace/events/f2fs.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/trace/events/f2fs.h b/include/trace/events/f2fs.h index 6a53c793cf20..53b96f12300c 100644 --- a/include/trace/events/f2fs.h +++ b/include/trace/events/f2fs.h @@ -1307,7 +1307,7 @@ TRACE_EVENT(f2fs_filemap_fault, TP_printk("dev = (%d,%d), ino = %lu, index = %lu, ret = %lx", show_dev_ino(__entry), (unsigned long)__entry->index, - _entry->ret) + __entry->ret) ); TRACE_EVENT(f2fs_writepages, -- 2.20.1 -- Cheers, Stephen Rothwell