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nilfs2: remove header file for segment list operations

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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>
This commit is contained in:
Ryusuke Konishi
2009-05-17 19:07:21 +09:00
parent 071cb4b819
commit 654137dd46
4 changed files with 25 additions and 93 deletions
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37
fs/nilfs2/recovery.c
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@@ -28,7 +28,6 @@
#include "segment.h"
#include "sufile.h"
#include "page.h"
#include "seglist.h"
#include "segbuf.h"
/*
@@ -395,6 +394,24 @@ static void dispose_recovery_list(struct list_head *head)
}
}
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 @@ void nilfs_dispose_segment_list(struct list_head *head)
= list_entry(head->next,
struct nilfs_segment_entry, list);
list_del(&ent->list);
nilfs_free_segment_entry(ent);
kfree(ent);
}
}
@@ -431,12 +448,10 @@ static int nilfs_prepare_segment_for_recovery(struct the_nilfs *nilfs,
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 @@ static int nilfs_prepare_segment_for_recovery(struct the_nilfs *nilfs,
goto failed;
}
list_del(&ent->list);
nilfs_free_segment_entry(ent);
kfree(ent);
}
/* Allocate new segments for recovery */
@@ -791,7 +806,6 @@ int nilfs_search_super_root(struct the_nilfs *nilfs, struct nilfs_sb_info *sbi,
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 @@ int nilfs_search_super_root(struct the_nilfs *nilfs, struct nilfs_sb_info *sbi,
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;