diff options
| -rw-r--r-- | fs/nilfs2/recovery.c | 12 | ||||
| -rw-r--r-- | fs/nilfs2/segbuf.c | 24 | ||||
| -rw-r--r-- | fs/nilfs2/segbuf.h | 6 | ||||
| -rw-r--r-- | fs/nilfs2/segment.c | 173 | ||||
| -rw-r--r-- | fs/nilfs2/segment.h | 5 | ||||
| -rw-r--r-- | fs/nilfs2/sufile.c | 8 | ||||
| -rw-r--r-- | fs/nilfs2/super.c | 4 | ||||
| -rw-r--r-- | fs/nilfs2/the_nilfs.h | 5 |
8 files changed, 29 insertions, 208 deletions
diff --git a/fs/nilfs2/recovery.c b/fs/nilfs2/recovery.c index ef387b1..6ab4c8f 100644 --- a/fs/nilfs2/recovery.c +++ b/fs/nilfs2/recovery.c @@ -463,16 +463,6 @@ static int nilfs_prepare_segment_for_recovery(struct the_nilfs *nilfs, nilfs_free_segment_entry(ent); } - /* - * The segment having the latest super root is active, and - * should be deactivated on the next construction for recovery. - */ - err = -ENOMEM; - ent = nilfs_alloc_segment_entry(segnum[0]); - if (unlikely(!ent)) - goto failed; - list_add_tail(&ent->list, &ri->ri_used_segments); - /* Allocate new segments for recovery */ err = nilfs_sufile_alloc(sufile, &segnum[0]); if (unlikely(err)) @@ -757,7 +747,7 @@ int nilfs_recover_logical_segments(struct the_nilfs *nilfs, goto failed; } - err = nilfs_attach_segment_constructor(sbi, ri); + err = nilfs_attach_segment_constructor(sbi); if (unlikely(err)) goto failed; diff --git a/fs/nilfs2/segbuf.c b/fs/nilfs2/segbuf.c index 3d3ea83..1e68821 100644 --- a/fs/nilfs2/segbuf.c +++ b/fs/nilfs2/segbuf.c @@ -64,27 +64,17 @@ struct nilfs_segment_buffer *nilfs_segbuf_new(struct super_block *sb) INIT_LIST_HEAD(&segbuf->sb_list); INIT_LIST_HEAD(&segbuf->sb_segsum_buffers); INIT_LIST_HEAD(&segbuf->sb_payload_buffers); - segbuf->sb_segent = NULL; return segbuf; } void nilfs_segbuf_free(struct nilfs_segment_buffer *segbuf) { - struct nilfs_segment_entry *ent = segbuf->sb_segent; - - if (ent != NULL && list_empty(&ent->list)) { - /* free isolated segment list head */ - nilfs_free_segment_entry(segbuf->sb_segent); - segbuf->sb_segent = NULL; - } kmem_cache_free(nilfs_segbuf_cachep, segbuf); } -int nilfs_segbuf_map(struct nilfs_segment_buffer *segbuf, __u64 segnum, +void nilfs_segbuf_map(struct nilfs_segment_buffer *segbuf, __u64 segnum, unsigned long offset, struct the_nilfs *nilfs) { - struct nilfs_segment_entry *ent; - segbuf->sb_segnum = segnum; nilfs_get_segment_range(nilfs, segnum, &segbuf->sb_fseg_start, &segbuf->sb_fseg_end); @@ -92,18 +82,6 @@ int nilfs_segbuf_map(struct nilfs_segment_buffer *segbuf, __u64 segnum, segbuf->sb_pseg_start = segbuf->sb_fseg_start + offset; segbuf->sb_rest_blocks = segbuf->sb_fseg_end - segbuf->sb_pseg_start + 1; - - /* Attach a segment list head */ - ent = segbuf->sb_segent; - if (ent == NULL) { - segbuf->sb_segent = nilfs_alloc_segment_entry(segnum); - if (unlikely(!segbuf->sb_segent)) - return -ENOMEM; - } else { - BUG_ON(ent->bh_su || !list_empty(&ent->list)); - ent->segnum = segnum; - } - return 0; } void nilfs_segbuf_set_next_segnum(struct nilfs_segment_buffer *segbuf, diff --git a/fs/nilfs2/segbuf.h b/fs/nilfs2/segbuf.h index 25f2a5f..0c3076f 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); diff --git a/fs/nilfs2/segment.c b/fs/nilfs2/segment.c index 2879704..e43558d 100644 --- a/fs/nilfs2/segment.c +++ b/fs/nilfs2/segment.c @@ -1304,25 +1304,6 @@ static int nilfs_segctor_collect_blocks(struct nilfs_sc_info *sci, int mode) return err; } -static int nilfs_segctor_terminate_segment(struct nilfs_sc_info *sci, - struct nilfs_segment_buffer *segbuf, - struct inode *sufile) -{ - struct nilfs_segment_entry *ent = segbuf->sb_segent; - int err; - - err = nilfs_open_segment_entry(ent, sufile); - if (unlikely(err)) - return err; - nilfs_mdt_mark_buffer_dirty(ent->bh_su); - nilfs_mdt_mark_dirty(sufile); - nilfs_close_segment_entry(ent, sufile); - - list_add_tail(&ent->list, &sci->sc_active_segments); - segbuf->sb_segent = NULL; - return 0; -} - static int nilfs_touch_segusage(struct inode *sufile, __u64 segnum) { struct buffer_head *bh_su; @@ -1342,7 +1323,6 @@ static int nilfs_segctor_begin_construction(struct nilfs_sc_info *sci, struct the_nilfs *nilfs) { struct nilfs_segment_buffer *segbuf, *n; - struct inode *sufile = nilfs->ns_sufile; __u64 nextnum; int err; @@ -1354,28 +1334,22 @@ static int nilfs_segctor_begin_construction(struct nilfs_sc_info *sci, } else segbuf = NILFS_FIRST_SEGBUF(&sci->sc_segbufs); - err = nilfs_segbuf_map(segbuf, nilfs->ns_segnum, - nilfs->ns_pseg_offset, nilfs); - if (unlikely(err)) - return err; + nilfs_segbuf_map(segbuf, nilfs->ns_segnum, nilfs->ns_pseg_offset, + nilfs); if (segbuf->sb_rest_blocks < NILFS_PSEG_MIN_BLOCKS) { - err = nilfs_segctor_terminate_segment(sci, segbuf, sufile); - if (unlikely(err)) - return err; - nilfs_shift_to_next_segment(nilfs); - err = nilfs_segbuf_map(segbuf, nilfs->ns_segnum, 0, nilfs); + nilfs_segbuf_map(segbuf, nilfs->ns_segnum, 0, nilfs); } sci->sc_segbuf_nblocks = segbuf->sb_rest_blocks; - err = nilfs_touch_segusage(sufile, segbuf->sb_segnum); + err = nilfs_touch_segusage(nilfs->ns_sufile, segbuf->sb_segnum); if (unlikely(err)) return err; if (nilfs->ns_segnum == nilfs->ns_nextnum) { /* Start from the head of a new full segment */ - err = nilfs_sufile_alloc(sufile, &nextnum); + err = nilfs_sufile_alloc(nilfs->ns_sufile, &nextnum); if (unlikely(err)) return err; } else @@ -1390,7 +1364,7 @@ static int nilfs_segctor_begin_construction(struct nilfs_sc_info *sci, list_del_init(&segbuf->sb_list); nilfs_segbuf_free(segbuf); } - return err; + return 0; } static int nilfs_segctor_extend_segments(struct nilfs_sc_info *sci, @@ -1421,10 +1395,7 @@ static int nilfs_segctor_extend_segments(struct nilfs_sc_info *sci, goto failed; /* map this buffer to region of segment on-disk */ - err = nilfs_segbuf_map(segbuf, prev->sb_nextnum, 0, nilfs); - if (unlikely(err)) - goto failed_segbuf; - + nilfs_segbuf_map(segbuf, prev->sb_nextnum, 0, nilfs); sci->sc_segbuf_nblocks += segbuf->sb_rest_blocks; /* allocate the next next full segment */ @@ -2178,102 +2149,6 @@ static void nilfs_segctor_check_out_files(struct nilfs_sc_info *sci, } /* - * Nasty routines to manipulate active flags on sufile. - * These would be removed in a future release. - */ -static void nilfs_segctor_reactivate_segments(struct nilfs_sc_info *sci, - struct the_nilfs *nilfs) -{ - struct nilfs_segment_buffer *segbuf, *last; - struct nilfs_segment_entry *ent, *n; - struct inode *sufile = nilfs->ns_sufile; - struct list_head *head; - - last = NILFS_LAST_SEGBUF(&sci->sc_segbufs); - nilfs_for_each_segbuf_before(segbuf, last, &sci->sc_segbufs) { - ent = segbuf->sb_segent; - if (!ent) - break; /* ignore unmapped segments (should check it?)*/ - nilfs_segment_usage_set_active(ent->raw_su); - nilfs_close_segment_entry(ent, sufile); - } - - head = &sci->sc_active_segments; - list_for_each_entry_safe(ent, n, head, list) { - nilfs_segment_usage_set_active(ent->raw_su); - nilfs_close_segment_entry(ent, sufile); - } -} - -static int nilfs_segctor_deactivate_segments(struct nilfs_sc_info *sci, - struct the_nilfs *nilfs) -{ - struct nilfs_segment_buffer *segbuf, *last; - struct nilfs_segment_entry *ent; - struct inode *sufile = nilfs->ns_sufile; - int err; - - last = NILFS_LAST_SEGBUF(&sci->sc_segbufs); - nilfs_for_each_segbuf_before(segbuf, last, &sci->sc_segbufs) { - /* - * Deactivate ongoing full segments. The last segment is kept - * active because it is a start point of recovery, and is not - * relocatable until the super block points to a newer - * checkpoint. - */ - ent = segbuf->sb_segent; - if (!ent) - break; /* ignore unmapped segments (should check it?)*/ - err = nilfs_open_segment_entry(ent, sufile); - if (unlikely(err)) - goto failed; - nilfs_segment_usage_clear_active(ent->raw_su); - BUG_ON(!buffer_dirty(ent->bh_su)); - } - - list_for_each_entry(ent, &sci->sc_active_segments, list) { - err = nilfs_open_segment_entry(ent, sufile); - if (unlikely(err)) - goto failed; - nilfs_segment_usage_clear_active(ent->raw_su); - WARN_ON(!buffer_dirty(ent->bh_su)); - } - return 0; - - failed: - nilfs_segctor_reactivate_segments(sci, nilfs); - return err; -} - -static void nilfs_segctor_bead_completed_segments(struct nilfs_sc_info *sci) -{ - struct nilfs_segment_buffer *segbuf, *last; - struct nilfs_segment_entry *ent; - - /* move each segbuf->sb_segent to the list of used active segments */ - last = NILFS_LAST_SEGBUF(&sci->sc_segbufs); - nilfs_for_each_segbuf_before(segbuf, last, &sci->sc_segbufs) { - ent = segbuf->sb_segent; - if (!ent) - break; /* ignore unmapped segments (should check it?)*/ - list_add_tail(&ent->list, &sci->sc_active_segments); - segbuf->sb_segent = NULL; - } -} - -static void nilfs_segctor_commit_deactivate_segments(struct nilfs_sc_info *sci, - struct the_nilfs *nilfs) -{ - struct nilfs_segment_entry *ent, *n; - - list_for_each_entry_safe(ent, n, &sci->sc_active_segments, list) { - list_del(&ent->list); - nilfs_close_segment_entry(ent, nilfs->ns_sufile); - nilfs_free_segment_entry(ent); - } -} - -/* * Main procedure of segment constructor */ static int nilfs_segctor_do_construct(struct nilfs_sc_info *sci, int mode) @@ -2322,11 +2197,6 @@ static int nilfs_segctor_do_construct(struct nilfs_sc_info *sci, int mode) if (unlikely(err)) goto failed; - if (has_sr) { - err = nilfs_segctor_deactivate_segments(sci, nilfs); - if (unlikely(err)) - goto failed; - } if (sci->sc_stage.flags & NILFS_CF_IFILE_STARTED) nilfs_segctor_fill_in_file_bmap(sci, sbi->s_ifile); @@ -2353,12 +2223,10 @@ static int nilfs_segctor_do_construct(struct nilfs_sc_info *sci, int mode) nilfs_segctor_complete_write(sci); /* Commit segments */ - nilfs_segctor_bead_completed_segments(sci); if (has_sr) { down_write(&nilfs->ns_sem); nilfs_update_last_segment(sbi, 1); up_write(&nilfs->ns_sem); - nilfs_segctor_commit_deactivate_segments(sci, nilfs); nilfs_segctor_commit_free_segments(sci); nilfs_segctor_clear_metadata_dirty(sci); } @@ -2379,8 +2247,6 @@ static int nilfs_segctor_do_construct(struct nilfs_sc_info *sci, int mode) failed_to_make_up: if (sci->sc_stage.flags & NILFS_CF_IFILE_STARTED) nilfs_redirty_inodes(&sci->sc_dirty_files); - if (has_sr) - nilfs_segctor_reactivate_segments(sci, nilfs); failed: if (nilfs_doing_gc()) @@ -2942,23 +2808,11 @@ static void nilfs_segctor_kill_thread(struct nilfs_sc_info *sci) } } -static int nilfs_segctor_init(struct nilfs_sc_info *sci, - struct nilfs_recovery_info *ri) +static int nilfs_segctor_init(struct nilfs_sc_info *sci) { - int err; - sci->sc_seq_done = sci->sc_seq_request; - if (ri) - list_splice_init(&ri->ri_used_segments, - sci->sc_active_segments.prev); - err = nilfs_segctor_start_thread(sci); - if (err) { - if (ri) - list_splice_init(&sci->sc_active_segments, - ri->ri_used_segments.prev); - } - return err; + return nilfs_segctor_start_thread(sci); } /* @@ -2982,7 +2836,6 @@ static struct nilfs_sc_info *nilfs_segctor_new(struct nilfs_sb_info *sbi) INIT_LIST_HEAD(&sci->sc_dirty_files); INIT_LIST_HEAD(&sci->sc_segbufs); INIT_LIST_HEAD(&sci->sc_gc_inodes); - INIT_LIST_HEAD(&sci->sc_active_segments); INIT_LIST_HEAD(&sci->sc_cleaning_segments); INIT_LIST_HEAD(&sci->sc_copied_buffers); @@ -3048,8 +2901,6 @@ static void nilfs_segctor_destroy(struct nilfs_sc_info *sci) "dirty file(s) after the final construction\n"); nilfs_dispose_list(sbi, &sci->sc_dirty_files, 1); } - if (!list_empty(&sci->sc_active_segments)) - nilfs_dispose_segment_list(&sci->sc_active_segments); if (!list_empty(&sci->sc_cleaning_segments)) nilfs_dispose_segment_list(&sci->sc_cleaning_segments); @@ -3064,7 +2915,6 @@ static void nilfs_segctor_destroy(struct nilfs_sc_info *sci) /** * nilfs_attach_segment_constructor - attach a segment constructor * @sbi: nilfs_sb_info - * @ri: nilfs_recovery_info * * nilfs_attach_segment_constructor() allocates a struct nilfs_sc_info, * initilizes it, and starts the segment constructor. @@ -3074,8 +2924,7 @@ static void nilfs_segctor_destroy(struct nilfs_sc_info *sci) * * %-ENOMEM - Insufficient memory available. */ -int nilfs_attach_segment_constructor(struct nilfs_sb_info *sbi, - struct nilfs_recovery_info *ri) +int nilfs_attach_segment_constructor(struct nilfs_sb_info *sbi) { struct the_nilfs *nilfs = sbi->s_nilfs; int err; @@ -3087,7 +2936,7 @@ int nilfs_attach_segment_constructor(struct nilfs_sb_info *sbi, return -ENOMEM; nilfs_attach_writer(nilfs, sbi); - err = nilfs_segctor_init(NILFS_SC(sbi), ri); + err = nilfs_segctor_init(NILFS_SC(sbi)); if (err) { nilfs_detach_writer(nilfs, sbi); kfree(sbi->s_sc_info); diff --git a/fs/nilfs2/segment.h b/fs/nilfs2/segment.h index bb7d417..4a64eb8 100644 --- a/fs/nilfs2/segment.h +++ b/fs/nilfs2/segment.h @@ -90,7 +90,6 @@ struct nilfs_segsum_pointer { * @sc_nblk_inc: Block count of current generation * @sc_dirty_files: List of files to be written * @sc_gc_inodes: List of GC inodes having blocks to be written - * @sc_active_segments: List of active segments that were already written out * @sc_cleaning_segments: List of segments to be freed through construction * @sc_copied_buffers: List of copied buffers (buffer heads) to freeze data * @sc_dsync_inode: inode whose data pages are written for a sync operation @@ -132,7 +131,6 @@ struct nilfs_sc_info { struct list_head sc_dirty_files; struct list_head sc_gc_inodes; - struct list_head sc_active_segments; struct list_head sc_cleaning_segments; struct list_head sc_copied_buffers; @@ -232,8 +230,7 @@ extern int nilfs_segctor_add_segments_to_be_freed(struct nilfs_sc_info *, __u64 *, size_t); extern void nilfs_segctor_clear_segments_to_be_freed(struct nilfs_sc_info *); -extern int nilfs_attach_segment_constructor(struct nilfs_sb_info *, - struct nilfs_recovery_info *); +extern int nilfs_attach_segment_constructor(struct nilfs_sb_info *); extern void nilfs_detach_segment_constructor(struct nilfs_sb_info *); /* recovery.c */ diff --git a/fs/nilfs2/sufile.c b/fs/nilfs2/sufile.c index 4cf47e0..c774cf3 100644 --- a/fs/nilfs2/sufile.c +++ b/fs/nilfs2/sufile.c @@ -158,7 +158,6 @@ int nilfs_sufile_alloc(struct inode *sufile, __u64 *segnump) if (!nilfs_segment_usage_clean(su)) continue; /* found a clean segment */ - nilfs_segment_usage_set_active(su); nilfs_segment_usage_set_dirty(su); kunmap_atomic(kaddr, KM_USER0); @@ -591,6 +590,7 @@ ssize_t nilfs_sufile_get_suinfo(struct inode *sufile, __u64 segnum, struct buffer_head *su_bh; struct nilfs_segment_usage *su; size_t susz = NILFS_MDT(sufile)->mi_entry_size; + struct the_nilfs *nilfs = NILFS_MDT(sufile)->mi_nilfs; void *kaddr; unsigned long nsegs, segusages_per_block; ssize_t n; @@ -623,7 +623,11 @@ ssize_t nilfs_sufile_get_suinfo(struct inode *sufile, __u64 segnum, for (j = 0; j < n; j++, su = (void *)su + susz) { si[i + j].sui_lastmod = le64_to_cpu(su->su_lastmod); si[i + j].sui_nblocks = le32_to_cpu(su->su_nblocks); - si[i + j].sui_flags = le32_to_cpu(su->su_flags); + si[i + j].sui_flags = le32_to_cpu(su->su_flags) & + ~(1UL << NILFS_SEGMENT_USAGE_ACTIVE); + if (nilfs_segment_is_active(nilfs, segnum + i + j)) + si[i + j].sui_flags |= + (1UL << NILFS_SEGMENT_USAGE_ACTIVE); } kunmap_atomic(kaddr, KM_USER0); brelse(su_bh); diff --git a/fs/nilfs2/super.c b/fs/nilfs2/super.c index b7519c3..ef31e9a 100644 --- a/fs/nilfs2/super.c +++ b/fs/nilfs2/super.c @@ -868,7 +868,7 @@ nilfs_fill_super(struct super_block *sb, void *data, int silent, } if (!(sb->s_flags & MS_RDONLY)) { - err = nilfs_attach_segment_constructor(sbi, NULL); + err = nilfs_attach_segment_constructor(sbi); if (err) goto failed_checkpoint; } @@ -1001,7 +1001,7 @@ static int nilfs_remount(struct super_block *sb, int *flags, char *data) nilfs_clear_opt(sbi, SNAPSHOT); sbi->s_snapshot_cno = 0; - err = nilfs_attach_segment_constructor(sbi, NULL); + err = nilfs_attach_segment_constructor(sbi); if (err) goto rw_remount_failed; diff --git a/fs/nilfs2/the_nilfs.h b/fs/nilfs2/the_nilfs.h index af566e7..d750e48 100644 --- a/fs/nilfs2/the_nilfs.h +++ b/fs/nilfs2/the_nilfs.h @@ -280,4 +280,9 @@ static inline __u64 nilfs_last_cno(struct the_nilfs *nilfs) return cno; } +static inline int nilfs_segment_is_active(struct the_nilfs *nilfs, __u64 n) +{ + return n == nilfs->ns_segnum || n == nilfs->ns_nextnum; +} + #endif /* _THE_NILFS_H */ |
