Commit 70a9ac36 authored by Gao Xiang's avatar Gao Xiang Committed by Jaegeuk Kim
Browse files

f2fs: fix up f2fs_lookup tracepoints 



Fix up a misuse that the filename pointer isn't always valid in
the ring buffer, and we should copy the content instead.

Fixes: 0c5e36db ("f2fs: trace f2fs_lookup")
Signed-off-by: default avatarGao Xiang <hsiangkao@linux.alibaba.com>
Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
parent 6663b138

include/trace/events/f2fs.h

+6 −6
Original line number Diff line number Diff line
@@ -807,20 +807,20 @@ TRACE_EVENT(f2fs_lookup_start, 
	TP_STRUCT__entry(

		__field(dev_t,	dev)

		__field(ino_t,	ino)

		__field(const char *,	name)

		__string(name,	dentry->d_name.name)

		__field(unsigned int, flags)

	),



	TP_fast_assign(

		__entry->dev	= dir->i_sb->s_dev;

		__entry->ino	= dir->i_ino;

		__entry->name	= dentry->d_name.name;

		__assign_str(name, dentry->d_name.name);

		__entry->flags	= flags;

	),



	TP_printk("dev = (%d,%d), pino = %lu, name:%s, flags:%u",

		show_dev_ino(__entry),

		__entry->name,

		__get_str(name),

		__entry->flags)

);
@@ -834,7 +834,7 @@ TRACE_EVENT(f2fs_lookup_end, 
	TP_STRUCT__entry(

		__field(dev_t,	dev)

		__field(ino_t,	ino)

		__field(const char *,	name)

		__string(name,	dentry->d_name.name)

		__field(nid_t,	cino)

		__field(int,	err)

	),
@@ -842,14 +842,14 @@ TRACE_EVENT(f2fs_lookup_end, 
	TP_fast_assign(

		__entry->dev	= dir->i_sb->s_dev;

		__entry->ino	= dir->i_ino;

		__entry->name	= dentry->d_name.name;

		__assign_str(name, dentry->d_name.name);

		__entry->cino	= ino;

		__entry->err	= err;

	),



	TP_printk("dev = (%d,%d), pino = %lu, name:%s, ino:%u, err:%d",

		show_dev_ino(__entry),

		__entry->name,

		__get_str(name),

		__entry->cino,

		__entry->err)

);