[patch 1/7] seq-file: Export single_ helpers

From: Cyrill Gorcunov
Date: Wed Nov 06 2013 - 06:48:56 EST


The single_ helpers will be used in fdinfo output to
eliminate code duplication.

Signed-off-by: Cyrill Gorcunov <gorcunov@xxxxxxxxxx>
Cc: Pavel Emelyanov <xemul@xxxxxxxxxxxxx>
Cc: Oleg Nesterov <oleg@xxxxxxxxxx>
Cc: Andrey Vagin <avagin@xxxxxxxxxx>
Cc: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Cc: Alexey Dobriyan <adobriyan@xxxxxxxxx>
Cc: James Bottomley <jbottomley@xxxxxxxxxxxxx>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@xxxxxxxxxxxxxxxxxx>
Cc: Alexey Dobriyan <adobriyan@xxxxxxxxx>
Cc: Matthew Helsley <matt.helsley@xxxxxxxxx>
Cc: "J. Bruce Fields" <bfields@xxxxxxxxxxxx>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@xxxxxxxxxxxxxxxxxx>
Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/seq_file.c | 9 ++++++---
include/linux/seq_file.h | 3 +++
2 files changed, 9 insertions(+), 3 deletions(-)

Index: linux-2.6.git/fs/seq_file.c
===================================================================
--- linux-2.6.git.orig/fs/seq_file.c
+++ linux-2.6.git/fs/seq_file.c
@@ -565,20 +565,23 @@ int seq_bitmap_list(struct seq_file *m,
}
EXPORT_SYMBOL(seq_bitmap_list);

-static void *single_start(struct seq_file *p, loff_t *pos)
+void *single_start(struct seq_file *p, loff_t *pos)
{
return NULL + (*pos == 0);
}
+EXPORT_SYMBOL(single_start);

-static void *single_next(struct seq_file *p, void *v, loff_t *pos)
+void *single_next(struct seq_file *p, void *v, loff_t *pos)
{
++*pos;
return NULL;
}
+EXPORT_SYMBOL(single_next);

-static void single_stop(struct seq_file *p, void *v)
+void single_stop(struct seq_file *p, void *v)
{
}
+EXPORT_SYMBOL(single_stop);

int single_open(struct file *file, int (*show)(struct seq_file *, void *),
void *data)
Index: linux-2.6.git/include/linux/seq_file.h
===================================================================
--- linux-2.6.git.orig/include/linux/seq_file.h
+++ linux-2.6.git/include/linux/seq_file.h
@@ -122,6 +122,9 @@ static inline int seq_nodemask_list(stru
return seq_bitmap_list(m, mask->bits, MAX_NUMNODES);
}

+void *single_start(struct seq_file *, loff_t *);
+void *single_next(struct seq_file *, void *, loff_t *);
+void single_stop(struct seq_file *, void *);
int single_open(struct file *, int (*)(struct seq_file *, void *), void *);
int single_open_size(struct file *, int (*)(struct seq_file *, void *), void *, size_t);
int single_release(struct inode *, struct file *);

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