mirror of https://gitee.com/openkylin/linux.git
nilfs2: move pointer to super root block into logs
This moves a pointer to buffer storing super root block to each log buffer from nilfs_sc_info struct for simplicity. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
This commit is contained in:
Ryusuke Konishi
parent
277a6a3417
commit
1e2b68bf28
|
|
@ -81,6 +81,7 @@ 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_super_root = NULL;
|
||||
|
||||
init_completion(&segbuf->sb_bio_event);
|
||||
atomic_set(&segbuf->sb_err, 0);
|
||||
|
|
@ -282,6 +283,7 @@ static void nilfs_segbuf_clear(struct nilfs_segment_buffer *segbuf)
|
|||
{
|
||||
nilfs_release_buffers(&segbuf->sb_segsum_buffers);
|
||||
nilfs_release_buffers(&segbuf->sb_payload_buffers);
|
||||
segbuf->sb_super_root = NULL;
|
||||
}
|
||||
|
||||
/*
|
||||
|
|
|
|||
|
|
@ -76,6 +76,7 @@ struct nilfs_segsum_info {
|
|||
* @sb_rest_blocks: Number of residual blocks in the current segment
|
||||
* @sb_segsum_buffers: List of buffers for segment summaries
|
||||
* @sb_payload_buffers: List of buffers for segment payload
|
||||
* @sb_super_root: Pointer to buffer storing a super root block (if exists)
|
||||
* @sb_nbio: Number of flying bio requests
|
||||
* @sb_err: I/O error status
|
||||
* @sb_bio_event: Completion event of log writing
|
||||
|
|
@ -95,6 +96,7 @@ struct nilfs_segment_buffer {
|
|||
/* Buffers */
|
||||
struct list_head sb_segsum_buffers;
|
||||
struct list_head sb_payload_buffers; /* including super root */
|
||||
struct buffer_head *sb_super_root;
|
||||
|
||||
/* io status */
|
||||
int sb_nbio;
|
||||
|
|
|
|||
|
|
@ -435,7 +435,7 @@ static int nilfs_segctor_add_super_root(struct nilfs_sc_info *sci)
|
|||
return err;
|
||||
segbuf = sci->sc_curseg;
|
||||
}
|
||||
err = nilfs_segbuf_extend_payload(segbuf, &sci->sc_super_root);
|
||||
err = nilfs_segbuf_extend_payload(segbuf, &segbuf->sb_super_root);
|
||||
if (likely(!err))
|
||||
segbuf->sb_sum.flags |= NILFS_SS_SR;
|
||||
return err;
|
||||
|
|
@ -952,10 +952,10 @@ static void nilfs_segctor_fill_in_checksums(struct nilfs_sc_info *sci,
|
|||
{
|
||||
struct nilfs_segment_buffer *segbuf;
|
||||
|
||||
if (sci->sc_super_root)
|
||||
nilfs_fill_in_super_root_crc(sci->sc_super_root, seed);
|
||||
|
||||
list_for_each_entry(segbuf, &sci->sc_segbufs, sb_list) {
|
||||
if (segbuf->sb_super_root)
|
||||
nilfs_fill_in_super_root_crc(segbuf->sb_super_root,
|
||||
seed);
|
||||
nilfs_segbuf_fill_in_segsum_crc(segbuf, seed);
|
||||
nilfs_segbuf_fill_in_data_crc(segbuf, seed);
|
||||
}
|
||||
|
|
@ -964,11 +964,13 @@ static void nilfs_segctor_fill_in_checksums(struct nilfs_sc_info *sci,
|
|||
static void nilfs_segctor_fill_in_super_root(struct nilfs_sc_info *sci,
|
||||
struct the_nilfs *nilfs)
|
||||
{
|
||||
struct buffer_head *bh_sr = sci->sc_super_root;
|
||||
struct nilfs_super_root *raw_sr =
|
||||
(struct nilfs_super_root *)bh_sr->b_data;
|
||||
struct buffer_head *bh_sr;
|
||||
struct nilfs_super_root *raw_sr;
|
||||
unsigned isz = nilfs->ns_inode_size;
|
||||
|
||||
bh_sr = NILFS_LAST_SEGBUF(&sci->sc_segbufs)->sb_super_root;
|
||||
raw_sr = (struct nilfs_super_root *)bh_sr->b_data;
|
||||
|
||||
raw_sr->sr_bytes = cpu_to_le16(NILFS_SR_BYTES);
|
||||
raw_sr->sr_nongc_ctime
|
||||
= cpu_to_le64(nilfs_doing_gc() ?
|
||||
|
|
@ -1491,7 +1493,6 @@ static int nilfs_segctor_collect(struct nilfs_sc_info *sci,
|
|||
|
||||
/* Collection retry loop */
|
||||
for (;;) {
|
||||
sci->sc_super_root = NULL;
|
||||
sci->sc_nblk_this_inc = 0;
|
||||
sci->sc_curseg = NILFS_FIRST_SEGBUF(&sci->sc_segbufs);
|
||||
|
||||
|
|
@ -1568,7 +1569,7 @@ nilfs_segctor_update_payload_blocknr(struct nilfs_sc_info *sci,
|
|||
ssp.offset = sizeof(struct nilfs_segment_summary);
|
||||
|
||||
list_for_each_entry(bh, &segbuf->sb_payload_buffers, b_assoc_buffers) {
|
||||
if (bh == sci->sc_super_root)
|
||||
if (bh == segbuf->sb_super_root)
|
||||
break;
|
||||
if (!finfo) {
|
||||
finfo = nilfs_segctor_map_segsum_entry(
|
||||
|
|
@ -1729,7 +1730,7 @@ static int nilfs_segctor_prepare_write(struct nilfs_sc_info *sci,
|
|||
|
||||
list_for_each_entry(bh, &segbuf->sb_payload_buffers,
|
||||
b_assoc_buffers) {
|
||||
if (bh == sci->sc_super_root) {
|
||||
if (bh == segbuf->sb_super_root) {
|
||||
if (bh->b_page != bd_page) {
|
||||
lock_page(bd_page);
|
||||
clear_page_dirty_for_io(bd_page);
|
||||
|
|
@ -1848,7 +1849,7 @@ static void nilfs_clear_copied_buffers(struct list_head *list, int err)
|
|||
}
|
||||
|
||||
static void nilfs_abort_logs(struct list_head *logs, struct page *failed_page,
|
||||
struct buffer_head *bh_sr, int err)
|
||||
int err)
|
||||
{
|
||||
struct nilfs_segment_buffer *segbuf;
|
||||
struct page *bd_page = NULL, *fs_page = NULL;
|
||||
|
|
@ -1869,7 +1870,7 @@ static void nilfs_abort_logs(struct list_head *logs, struct page *failed_page,
|
|||
|
||||
list_for_each_entry(bh, &segbuf->sb_payload_buffers,
|
||||
b_assoc_buffers) {
|
||||
if (bh == bh_sr) {
|
||||
if (bh == segbuf->sb_super_root) {
|
||||
if (bh->b_page != bd_page) {
|
||||
end_page_writeback(bd_page);
|
||||
bd_page = bh->b_page;
|
||||
|
|
@ -1898,7 +1899,7 @@ static void nilfs_segctor_abort_construction(struct nilfs_sc_info *sci,
|
|||
|
||||
list_splice_tail_init(&sci->sc_write_logs, &logs);
|
||||
ret = nilfs_wait_on_logs(&logs);
|
||||
nilfs_abort_logs(&logs, NULL, sci->sc_super_root, ret ? : err);
|
||||
nilfs_abort_logs(&logs, NULL, ret ? : err);
|
||||
|
||||
list_splice_tail_init(&sci->sc_segbufs, &logs);
|
||||
nilfs_cancel_segusage(&logs, nilfs->ns_sufile);
|
||||
|
|
@ -1914,7 +1915,6 @@ static void nilfs_segctor_abort_construction(struct nilfs_sc_info *sci,
|
|||
}
|
||||
|
||||
nilfs_destroy_logs(&logs);
|
||||
sci->sc_super_root = NULL;
|
||||
}
|
||||
|
||||
static void nilfs_set_next_segment(struct the_nilfs *nilfs,
|
||||
|
|
@ -1933,7 +1933,7 @@ static void nilfs_segctor_complete_write(struct nilfs_sc_info *sci)
|
|||
struct nilfs_segment_buffer *segbuf;
|
||||
struct page *bd_page = NULL, *fs_page = NULL;
|
||||
struct the_nilfs *nilfs = sci->sc_sbi->s_nilfs;
|
||||
int update_sr = (sci->sc_super_root != NULL);
|
||||
int update_sr = false;
|
||||
|
||||
list_for_each_entry(segbuf, &sci->sc_write_logs, sb_list) {
|
||||
struct buffer_head *bh;
|
||||
|
|
@ -1964,11 +1964,12 @@ static void nilfs_segctor_complete_write(struct nilfs_sc_info *sci)
|
|||
set_buffer_uptodate(bh);
|
||||
clear_buffer_dirty(bh);
|
||||
clear_buffer_nilfs_volatile(bh);
|
||||
if (bh == sci->sc_super_root) {
|
||||
if (bh == segbuf->sb_super_root) {
|
||||
if (bh->b_page != bd_page) {
|
||||
end_page_writeback(bd_page);
|
||||
bd_page = bh->b_page;
|
||||
}
|
||||
update_sr = true;
|
||||
break;
|
||||
}
|
||||
if (bh->b_page != fs_page) {
|
||||
|
|
@ -2115,7 +2116,7 @@ static int nilfs_segctor_do_construct(struct nilfs_sc_info *sci, int mode)
|
|||
struct nilfs_sb_info *sbi = sci->sc_sbi;
|
||||
struct the_nilfs *nilfs = sbi->s_nilfs;
|
||||
struct page *failed_page;
|
||||
int err, has_sr = 0;
|
||||
int err;
|
||||
|
||||
sci->sc_stage.scnt = NILFS_ST_INIT;
|
||||
|
||||
|
|
@ -2143,8 +2144,6 @@ static int nilfs_segctor_do_construct(struct nilfs_sc_info *sci, int mode)
|
|||
if (unlikely(err))
|
||||
goto failed;
|
||||
|
||||
has_sr = (sci->sc_super_root != NULL);
|
||||
|
||||
/* Avoid empty segment */
|
||||
if (sci->sc_stage.scnt == NILFS_ST_DONE &&
|
||||
NILFS_SEG_EMPTY(&sci->sc_curseg->sb_sum)) {
|
||||
|
|
@ -2159,7 +2158,8 @@ static int nilfs_segctor_do_construct(struct nilfs_sc_info *sci, int mode)
|
|||
if (sci->sc_stage.flags & NILFS_CF_IFILE_STARTED)
|
||||
nilfs_segctor_fill_in_file_bmap(sci, sbi->s_ifile);
|
||||
|
||||
if (has_sr) {
|
||||
if (mode == SC_LSEG_SR &&
|
||||
sci->sc_stage.scnt >= NILFS_ST_CPFILE) {
|
||||
err = nilfs_segctor_fill_in_checkpoint(sci);
|
||||
if (unlikely(err))
|
||||
goto failed_to_write;
|
||||
|
|
@ -2171,8 +2171,7 @@ static int nilfs_segctor_do_construct(struct nilfs_sc_info *sci, int mode)
|
|||
/* Write partial segments */
|
||||
err = nilfs_segctor_prepare_write(sci, &failed_page);
|
||||
if (err) {
|
||||
nilfs_abort_logs(&sci->sc_segbufs, failed_page,
|
||||
sci->sc_super_root, err);
|
||||
nilfs_abort_logs(&sci->sc_segbufs, failed_page, err);
|
||||
goto failed_to_write;
|
||||
}
|
||||
nilfs_segctor_fill_in_checksums(sci, nilfs->ns_crc_seed);
|
||||
|
|
@ -2196,8 +2195,6 @@ static int nilfs_segctor_do_construct(struct nilfs_sc_info *sci, int mode)
|
|||
}
|
||||
} while (sci->sc_stage.scnt != NILFS_ST_DONE);
|
||||
|
||||
sci->sc_super_root = NULL;
|
||||
|
||||
out:
|
||||
nilfs_segctor_check_out_files(sci, sbi);
|
||||
return err;
|
||||
|
|
|
|||
|
|
@ -100,7 +100,6 @@ struct nilfs_segsum_pointer {
|
|||
* @sc_write_logs: List of segment buffers to hold logs under writing
|
||||
* @sc_segbuf_nblocks: Number of available blocks in segment buffers.
|
||||
* @sc_curseg: Current segment buffer
|
||||
* @sc_super_root: Pointer to the super root buffer
|
||||
* @sc_stage: Collection stage
|
||||
* @sc_finfo_ptr: pointer to the current finfo struct in the segment summary
|
||||
* @sc_binfo_ptr: pointer to the current binfo struct in the segment summary
|
||||
|
|
@ -148,7 +147,6 @@ struct nilfs_sc_info {
|
|||
struct list_head sc_write_logs;
|
||||
unsigned long sc_segbuf_nblocks;
|
||||
struct nilfs_segment_buffer *sc_curseg;
|
||||
struct buffer_head *sc_super_root;
|
||||
|
||||
struct nilfs_cstage sc_stage;
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue