diff options
| -rw-r--r-- | fs/nilfs2/segment.c | 1 | ||||
| -rw-r--r-- | fs/nilfs2/the_nilfs.c | 11 | ||||
| -rw-r--r-- | fs/nilfs2/the_nilfs.h | 2 |
3 files changed, 13 insertions, 1 deletions
diff --git a/fs/nilfs2/segment.c b/fs/nilfs2/segment.c index 04e04854a311..9fd051a33c4f 100644 --- a/fs/nilfs2/segment.c +++ b/fs/nilfs2/segment.c @@ -1951,7 +1951,6 @@ static void nilfs_segctor_complete_write(struct nilfs_sc_info *sci) if (update_sr) { nilfs_set_last_segment(nilfs, segbuf->sb_pseg_start, segbuf->sb_sum.seg_seq, nilfs->ns_cno++); - set_nilfs_sb_dirty(nilfs); clear_bit(NILFS_SC_HAVE_DELTA, &sci->sc_flags); clear_bit(NILFS_SC_DIRTY, &sci->sc_flags); diff --git a/fs/nilfs2/the_nilfs.c b/fs/nilfs2/the_nilfs.c index 88c8976c55a9..f2efc8c5be7f 100644 --- a/fs/nilfs2/the_nilfs.c +++ b/fs/nilfs2/the_nilfs.c @@ -47,6 +47,16 @@ void nilfs_set_last_segment(struct the_nilfs *nilfs, nilfs->ns_last_pseg = start_blocknr; nilfs->ns_last_seq = seq; nilfs->ns_last_cno = cno; + + if (!nilfs_sb_dirty(nilfs)) { + if (nilfs->ns_prev_seq == nilfs->ns_last_seq) + goto stay_cursor; + + set_nilfs_sb_dirty(nilfs); + } + nilfs->ns_prev_seq = nilfs->ns_last_seq; + + stay_cursor: spin_unlock(&nilfs->ns_last_segment_lock); } @@ -267,6 +277,7 @@ static int nilfs_store_log_cursor(struct the_nilfs *nilfs, nilfs->ns_last_cno = le64_to_cpu(sbp->s_last_cno); nilfs->ns_last_seq = le64_to_cpu(sbp->s_last_seq); + nilfs->ns_prev_seq = nilfs->ns_last_seq; nilfs->ns_seg_seq = nilfs->ns_last_seq; nilfs->ns_segnum = nilfs_get_segnum_of_block(nilfs, nilfs->ns_last_pseg); diff --git a/fs/nilfs2/the_nilfs.h b/fs/nilfs2/the_nilfs.h index 32b4983b7458..f785a7b0ab99 100644 --- a/fs/nilfs2/the_nilfs.h +++ b/fs/nilfs2/the_nilfs.h @@ -74,6 +74,7 @@ enum { * @ns_last_seq: sequence value of the latest segment * @ns_last_cno: checkpoint number of the latest segment * @ns_prot_seq: least sequence number of segments which must not be reclaimed + * @ns_prev_seq: base sequence number used to decide if advance log cursor * @ns_segctor_sem: segment constructor semaphore * @ns_dat: DAT file inode * @ns_cpfile: checkpoint file inode @@ -151,6 +152,7 @@ struct the_nilfs { u64 ns_last_seq; __u64 ns_last_cno; u64 ns_prot_seq; + u64 ns_prev_seq; struct rw_semaphore ns_segctor_sem; |