nilfs2: remove header file for segment list operations
This will eliminate obsolete list operations of nilfs_segment_entry
structure which has been used to handle mutiple segment numbers.
The patch ("nilfs2: remove list of freeing segments") removed use of
the structure from the segment constructor code, and this patch
simplifies the remaining code by integrating it into recovery.c.
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
diff --git a/fs/nilfs2/recovery.c b/fs/nilfs2/recovery.c
index 57afa9d..d80cc71 100644
--- a/fs/nilfs2/recovery.c
+++ b/fs/nilfs2/recovery.c
@@ -28,7 +28,6 @@
#include "segment.h"
#include "sufile.h"
#include "page.h"
-#include "seglist.h"
#include "segbuf.h"
/*
@@ -395,6 +394,24 @@
}
}
+struct nilfs_segment_entry {
+ struct list_head list;
+ __u64 segnum;
+};
+
+static int nilfs_segment_list_add(struct list_head *head, __u64 segnum)
+{
+ struct nilfs_segment_entry *ent = kmalloc(sizeof(*ent), GFP_NOFS);
+
+ if (unlikely(!ent))
+ return -ENOMEM;
+
+ ent->segnum = segnum;
+ INIT_LIST_HEAD(&ent->list);
+ list_add_tail(&ent->list, head);
+ return 0;
+}
+
void nilfs_dispose_segment_list(struct list_head *head)
{
while (!list_empty(head)) {
@@ -402,7 +419,7 @@
= list_entry(head->next,
struct nilfs_segment_entry, list);
list_del(&ent->list);
- nilfs_free_segment_entry(ent);
+ kfree(ent);
}
}
@@ -431,12 +448,10 @@
if (unlikely(err))
goto failed;
- err = -ENOMEM;
for (i = 1; i < 4; i++) {
- ent = nilfs_alloc_segment_entry(segnum[i]);
- if (unlikely(!ent))
+ err = nilfs_segment_list_add(head, segnum[i]);
+ if (unlikely(err))
goto failed;
- list_add_tail(&ent->list, head);
}
/*
@@ -450,7 +465,7 @@
goto failed;
}
list_del(&ent->list);
- nilfs_free_segment_entry(ent);
+ kfree(ent);
}
/* Allocate new segments for recovery */
@@ -791,7 +806,6 @@
u64 seg_seq;
__u64 segnum, nextnum = 0;
__u64 cno;
- struct nilfs_segment_entry *ent;
LIST_HEAD(segments);
int empty_seg = 0, scan_newer = 0;
int ret;
@@ -892,12 +906,9 @@
if (empty_seg++)
goto super_root_found; /* found a valid super root */
- ent = nilfs_alloc_segment_entry(segnum);
- if (unlikely(!ent)) {
- ret = -ENOMEM;
+ ret = nilfs_segment_list_add(&segments, segnum);
+ if (unlikely(ret))
goto failed;
- }
- list_add_tail(&ent->list, &segments);
seg_seq++;
segnum = nextnum;
diff --git a/fs/nilfs2/seglist.h b/fs/nilfs2/seglist.h
deleted file mode 100644
index e448e40..0000000
--- a/fs/nilfs2/seglist.h
+++ /dev/null
@@ -1,79 +0,0 @@
-/*
- * seglist.h - expediential structure and routines to handle list of segments
- * (would be removed in a future release)
- *
- * Copyright (C) 2005-2008 Nippon Telegraph and Telephone Corporation.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * Written by Ryusuke Konishi <ryusuke@osrg.net>
- *
- */
-#ifndef _NILFS_SEGLIST_H
-#define _NILFS_SEGLIST_H
-
-#include <linux/fs.h>
-#include <linux/buffer_head.h>
-#include <linux/nilfs2_fs.h>
-#include "sufile.h"
-
-struct nilfs_segment_entry {
- __u64 segnum;
-
- struct list_head list;
- struct buffer_head *bh_su;
- struct nilfs_segment_usage *raw_su;
-};
-
-
-void nilfs_dispose_segment_list(struct list_head *);
-
-static inline struct nilfs_segment_entry *
-nilfs_alloc_segment_entry(__u64 segnum)
-{
- struct nilfs_segment_entry *ent = kmalloc(sizeof(*ent), GFP_NOFS);
-
- if (likely(ent)) {
- ent->segnum = segnum;
- ent->bh_su = NULL;
- ent->raw_su = NULL;
- INIT_LIST_HEAD(&ent->list);
- }
- return ent;
-}
-
-static inline int nilfs_open_segment_entry(struct nilfs_segment_entry *ent,
- struct inode *sufile)
-{
- return nilfs_sufile_get_segment_usage(sufile, ent->segnum,
- &ent->raw_su, &ent->bh_su);
-}
-
-static inline void nilfs_close_segment_entry(struct nilfs_segment_entry *ent,
- struct inode *sufile)
-{
- if (!ent->bh_su)
- return;
- nilfs_sufile_put_segment_usage(sufile, ent->segnum, ent->bh_su);
- ent->bh_su = NULL;
- ent->raw_su = NULL;
-}
-
-static inline void nilfs_free_segment_entry(struct nilfs_segment_entry *ent)
-{
- kfree(ent);
-}
-
-#endif /* _NILFS_SEGLIST_H */
diff --git a/fs/nilfs2/segment.h b/fs/nilfs2/segment.h
index f36a851..0d2a475 100644
--- a/fs/nilfs2/segment.h
+++ b/fs/nilfs2/segment.h
@@ -239,5 +239,6 @@
extern int nilfs_recover_logical_segments(struct the_nilfs *,
struct nilfs_sb_info *,
struct nilfs_recovery_info *);
+extern void nilfs_dispose_segment_list(struct list_head *);
#endif /* _NILFS_SEGMENT_H */
diff --git a/fs/nilfs2/the_nilfs.c b/fs/nilfs2/the_nilfs.c
index 7f65b3b..dfe2e32 100644
--- a/fs/nilfs2/the_nilfs.c
+++ b/fs/nilfs2/the_nilfs.c
@@ -32,7 +32,6 @@
#include "cpfile.h"
#include "sufile.h"
#include "dat.h"
-#include "seglist.h"
#include "segbuf.h"
void nilfs_set_last_segment(struct the_nilfs *nilfs,