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authorRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>2009-04-06 19:01:58 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-04-07 08:31:20 -0700
commitcece552074c591970353ad48308d65f110aeaf28 (patch)
tree2dcca7913d38df89711504f5daeecccfedb5a3eb /fs/nilfs2/segbuf.h
parentc96fa464a567a2a8796009af0e79bc68af73f485 (diff)
downloadlinux-stericsson-cece552074c591970353ad48308d65f110aeaf28.tar.gz
nilfs2: simplify handling of active state of segments
will reduce some lines of segment constructor. Previously, the state was complexly controlled through a list of segments in order to keep consistency in meta data of usage state of segments. Instead, this presents ``calculated'' active flags to userland cleaner program and stop maintaining its real flag on disk. Only by this fake flag, the cleaner cannot exactly know if each segment is reclaimable or not. However, the recent extension of nilfs_sustat ioctl struct (nilfs2-extend-nilfs_sustat-ioctl-struct.patch) can prevent the cleaner from reclaiming in-use segment wrongly. So, now I can apply this for simplification. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/nilfs2/segbuf.h')
-rw-r--r--fs/nilfs2/segbuf.h6
1 files changed, 2 insertions, 4 deletions
diff --git a/fs/nilfs2/segbuf.h b/fs/nilfs2/segbuf.h
index 25f2a5faa483..0c3076f4e592 100644
--- a/fs/nilfs2/segbuf.h
+++ b/fs/nilfs2/segbuf.h
@@ -68,7 +68,6 @@ struct nilfs_segsum_info {
* struct nilfs_segment_buffer - Segment buffer
* @sb_super: back pointer to a superblock struct
* @sb_list: List head to chain this structure
- * @sb_segent: Pointer for attaching a segment entry
* @sb_sum: On-memory segment summary
* @sb_segnum: Index number of the full segment
* @sb_nextnum: Index number of the next full segment
@@ -83,7 +82,6 @@ struct nilfs_segsum_info {
struct nilfs_segment_buffer {
struct super_block *sb_super;
struct list_head sb_list;
- struct nilfs_segment_entry *sb_segent;
/* Segment information */
struct nilfs_segsum_info sb_sum;
@@ -125,8 +123,8 @@ int __init nilfs_init_segbuf_cache(void);
void nilfs_destroy_segbuf_cache(void);
struct nilfs_segment_buffer *nilfs_segbuf_new(struct super_block *);
void nilfs_segbuf_free(struct nilfs_segment_buffer *);
-int nilfs_segbuf_map(struct nilfs_segment_buffer *, __u64, unsigned long,
- struct the_nilfs *);
+void nilfs_segbuf_map(struct nilfs_segment_buffer *, __u64, unsigned long,
+ struct the_nilfs *);
void nilfs_segbuf_set_next_segnum(struct nilfs_segment_buffer *, __u64,
struct the_nilfs *);
int nilfs_segbuf_reset(struct nilfs_segment_buffer *, unsigned, time_t);