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-rw-r--r--fs/nilfs2/segbuf.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/fs/nilfs2/segbuf.c b/fs/nilfs2/segbuf.c
index d856d62..645c786 100644
--- a/fs/nilfs2/segbuf.c
+++ b/fs/nilfs2/segbuf.c
@@ -100,6 +100,22 @@ void nilfs_segbuf_map(struct nilfs_segment_buffer *segbuf, __u64 segnum,
segbuf->sb_fseg_end - segbuf->sb_pseg_start + 1;
}
+/**
+ * nilfs_segbuf_map_cont - map a new log behind a given log
+ * @segbuf: new segment buffer
+ * @prev: segment buffer containing a log to be continued
+ */
+void nilfs_segbuf_map_cont(struct nilfs_segment_buffer *segbuf,
+ struct nilfs_segment_buffer *prev)
+{
+ segbuf->sb_segnum = prev->sb_segnum;
+ segbuf->sb_fseg_start = prev->sb_fseg_start;
+ segbuf->sb_fseg_end = prev->sb_fseg_end;
+ segbuf->sb_pseg_start = prev->sb_pseg_start + prev->sb_sum.nblocks;
+ segbuf->sb_rest_blocks =
+ segbuf->sb_fseg_end - segbuf->sb_pseg_start + 1;
+}
+
void nilfs_segbuf_set_next_segnum(struct nilfs_segment_buffer *segbuf,
__u64 nextnum, struct the_nilfs *nilfs)
{