nilfs2: get rid of GCDAT inode
This applies prepared rollback function and redirect function of
metadata file to DAT file, and eliminates GCDAT inode.
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
diff --git a/fs/nilfs2/segment.c b/fs/nilfs2/segment.c
index 91dc066..b0c5e08 100644
--- a/fs/nilfs2/segment.c
+++ b/fs/nilfs2/segment.c
@@ -1945,11 +1945,9 @@
nilfs_drop_collected_inodes(&sci->sc_dirty_files);
- if (nilfs_doing_gc()) {
+ if (nilfs_doing_gc())
nilfs_drop_collected_inodes(&sci->sc_gc_inodes);
- if (update_sr)
- nilfs_commit_gcdat_inode(nilfs);
- } else
+ else
nilfs->ns_nongc_ctime = sci->sc_seg_ctime;
sci->sc_nblk_inc += sci->sc_nblk_this_inc;
@@ -2472,13 +2470,15 @@
nilfs_transaction_lock(sbi, &ti, 1);
- err = nilfs_init_gcdat_inode(nilfs);
+ err = nilfs_mdt_save_to_shadow_map(nilfs->ns_dat);
if (unlikely(err))
goto out_unlock;
err = nilfs_ioctl_prepare_clean_segments(nilfs, argv, kbufs);
- if (unlikely(err))
+ if (unlikely(err)) {
+ nilfs_mdt_restore_from_shadow_map(nilfs->ns_dat);
goto out_unlock;
+ }
sci->sc_freesegs = kbufs[4];
sci->sc_nfreesegs = argv[4].v_nmembs;
@@ -2510,7 +2510,7 @@
out_unlock:
sci->sc_freesegs = NULL;
sci->sc_nfreesegs = 0;
- nilfs_clear_gcdat_inode(nilfs);
+ nilfs_mdt_clear_shadow_map(nilfs->ns_dat);
nilfs_transaction_unlock(sbi);
return err;
}