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author | Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> | 2009-11-29 07:51:16 (GMT) |
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committer | Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> | 2009-11-30 12:06:35 (GMT) |
commit | e29df395bc6d2d0c89b3d8a5939a24b1b43c2fb6 (patch) | |
tree | 6d6f570d8158d7a18570492d9f5f5edf843ed28c /fs/nilfs2/segment.c | |
parent | 9c965bac169f786cc6cca8ff81d3b636e923c960 (diff) | |
download | linux-fsl-qoriq-e29df395bc6d2d0c89b3d8a5939a24b1b43c2fb6.tar.xz |
nilfs2: add iterator for segment buffers
This adds a few iterator functions for segment buffers to make it easy
to handle multiple series of logs.
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Diffstat (limited to 'fs/nilfs2/segment.c')
-rw-r--r-- | fs/nilfs2/segment.c | 51 |
1 files changed, 12 insertions, 39 deletions
diff --git a/fs/nilfs2/segment.c b/fs/nilfs2/segment.c index 4422cda..689deb9 100644 --- a/fs/nilfs2/segment.c +++ b/fs/nilfs2/segment.c @@ -1276,7 +1276,7 @@ static int nilfs_segctor_collect_blocks(struct nilfs_sc_info *sci, int mode) static int nilfs_segctor_begin_construction(struct nilfs_sc_info *sci, struct the_nilfs *nilfs) { - struct nilfs_segment_buffer *segbuf, *n; + struct nilfs_segment_buffer *segbuf; __u64 nextnum; int err; @@ -1313,18 +1313,14 @@ static int nilfs_segctor_begin_construction(struct nilfs_sc_info *sci, nilfs_segbuf_set_next_segnum(segbuf, nextnum, nilfs); /* truncating segment buffers */ - list_for_each_entry_safe_continue(segbuf, n, &sci->sc_segbufs, - sb_list) { - list_del_init(&segbuf->sb_list); - nilfs_segbuf_free(segbuf); - } + nilfs_truncate_logs(&sci->sc_segbufs, segbuf); return 0; } static int nilfs_segctor_extend_segments(struct nilfs_sc_info *sci, struct the_nilfs *nilfs, int nadd) { - struct nilfs_segment_buffer *segbuf, *prev, *n; + struct nilfs_segment_buffer *segbuf, *prev; struct inode *sufile = nilfs->ns_sufile; __u64 nextnextnum; LIST_HEAD(list); @@ -1369,12 +1365,11 @@ static int nilfs_segctor_extend_segments(struct nilfs_sc_info *sci, failed_segbuf: nilfs_segbuf_free(segbuf); failed: - list_for_each_entry_safe(segbuf, n, &list, sb_list) { + list_for_each_entry(segbuf, &list, sb_list) { ret = nilfs_sufile_free(sufile, segbuf->sb_nextnum); WARN_ON(ret); /* never fails */ - list_del_init(&segbuf->sb_list); - nilfs_segbuf_free(segbuf); } + nilfs_destroy_logs(&list); return err; } @@ -1411,27 +1406,6 @@ static void nilfs_segctor_free_incomplete_segments(struct nilfs_sc_info *sci, } } -static void nilfs_segctor_clear_segment_buffers(struct nilfs_sc_info *sci) -{ - struct nilfs_segment_buffer *segbuf; - - list_for_each_entry(segbuf, &sci->sc_segbufs, sb_list) - nilfs_segbuf_clear(segbuf); - sci->sc_super_root = NULL; -} - -static void nilfs_segctor_destroy_segment_buffers(struct nilfs_sc_info *sci) -{ - struct nilfs_segment_buffer *segbuf; - - while (!list_empty(&sci->sc_segbufs)) { - segbuf = NILFS_FIRST_SEGBUF(&sci->sc_segbufs); - list_del_init(&segbuf->sb_list); - nilfs_segbuf_free(segbuf); - } - /* sci->sc_curseg = NULL; */ -} - static void nilfs_segctor_end_construction(struct nilfs_sc_info *sci, struct the_nilfs *nilfs, int err) { @@ -1447,7 +1421,8 @@ static void nilfs_segctor_end_construction(struct nilfs_sc_info *sci, WARN_ON(ret); /* do not happen */ } } - nilfs_segctor_clear_segment_buffers(sci); + nilfs_clear_logs(&sci->sc_segbufs); + sci->sc_super_root = NULL; } static void nilfs_segctor_update_segusage(struct nilfs_sc_info *sci, @@ -1490,17 +1465,15 @@ static void nilfs_segctor_truncate_segments(struct nilfs_sc_info *sci, struct nilfs_segment_buffer *last, struct inode *sufile) { - struct nilfs_segment_buffer *segbuf = last, *n; + struct nilfs_segment_buffer *segbuf = last; int ret; - list_for_each_entry_safe_continue(segbuf, n, &sci->sc_segbufs, - sb_list) { - list_del_init(&segbuf->sb_list); + list_for_each_entry_continue(segbuf, &sci->sc_segbufs, sb_list) { sci->sc_segbuf_nblocks -= segbuf->sb_rest_blocks; ret = nilfs_sufile_free(sufile, segbuf->sb_nextnum); WARN_ON(ret); - nilfs_segbuf_free(segbuf); } + nilfs_truncate_logs(&sci->sc_segbufs, last); } @@ -1539,7 +1512,7 @@ static int nilfs_segctor_collect(struct nilfs_sc_info *sci, NULL); WARN_ON(err); /* do not happen */ } - nilfs_segctor_clear_segment_buffers(sci); + nilfs_clear_logs(&sci->sc_segbufs); err = nilfs_segctor_extend_segments(sci, nilfs, nadd); if (unlikely(err)) @@ -2179,7 +2152,7 @@ static int nilfs_segctor_do_construct(struct nilfs_sc_info *sci, int mode) } while (sci->sc_stage.scnt != NILFS_ST_DONE); out: - nilfs_segctor_destroy_segment_buffers(sci); + nilfs_destroy_logs(&sci->sc_segbufs); nilfs_segctor_check_out_files(sci, sbi); return err; |