Hi Jaegeuk, On 2017/7/14 9:01, Jaegeuk Kim wrote: > This patch includes seq_file.h to avoid compile error. I didn't hit the error, I guess that's because we have included f2fs_fs.h in sysfs.c, the inclusion relation is like this: - sysfs.c - f2fs_fs.h - pagemap.h - fs.h - struct seq_file Thanks, > > Signed-off-by: Eric Biggers <ebiggers@xxxxxxxxxx> > Signed-off-by: Jaegeuk Kim <jaegeuk@xxxxxxxxxx> > --- > fs/f2fs/sysfs.c | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c > index 9adc202fcd6f..71191d89917d 100644 > --- a/fs/f2fs/sysfs.c > +++ b/fs/f2fs/sysfs.c > @@ -11,6 +11,7 @@ > */ > #include <linux/proc_fs.h> > #include <linux/f2fs_fs.h> > +#include <linux/seq_file.h> > > #include "f2fs.h" > #include "segment.h" >