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-rw-r--r--fs/nilfs2/recovery.c12
-rw-r--r--fs/nilfs2/segbuf.c24
-rw-r--r--fs/nilfs2/segbuf.h6
-rw-r--r--fs/nilfs2/segment.c173
-rw-r--r--fs/nilfs2/segment.h5
-rw-r--r--fs/nilfs2/sufile.c8
-rw-r--r--fs/nilfs2/super.c4
-rw-r--r--fs/nilfs2/the_nilfs.h5
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 */
generated by cgit v1.1 at 2024-05-29 23:17:20 +0000