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-rw-r--r--fs/jbd2/commit.c78
1 files changed, 31 insertions, 47 deletions
diff --git a/fs/jbd2/commit.c b/fs/jbd2/commit.c
index 57bd2ff97888..7c6f7eea2316 100644
--- a/fs/jbd2/commit.c
+++ b/fs/jbd2/commit.c
@@ -85,8 +85,7 @@ nope:
__brelse(bh);
}
-static void jbd2_commit_block_csum_set(journal_t *j,
- struct journal_head *descriptor)
+static void jbd2_commit_block_csum_set(journal_t *j, struct buffer_head *bh)
{
struct commit_header *h;
__u32 csum;
@@ -94,12 +93,11 @@ static void jbd2_commit_block_csum_set(journal_t *j,
if (!JBD2_HAS_INCOMPAT_FEATURE(j, JBD2_FEATURE_INCOMPAT_CSUM_V2))
return;
- h = (struct commit_header *)(jh2bh(descriptor)->b_data);
+ h = (struct commit_header *)(bh->b_data);
h->h_chksum_type = 0;
h->h_chksum_size = 0;
h->h_chksum[0] = 0;
- csum = jbd2_chksum(j, j->j_csum_seed, jh2bh(descriptor)->b_data,
- j->j_blocksize);
+ csum = jbd2_chksum(j, j->j_csum_seed, bh->b_data, j->j_blocksize);
h->h_chksum[0] = cpu_to_be32(csum);
}
@@ -116,7 +114,6 @@ static int journal_submit_commit_record(journal_t *journal,
struct buffer_head **cbh,
__u32 crc32_sum)
{
- struct journal_head *descriptor;
struct commit_header *tmp;
struct buffer_head *bh;
int ret;
@@ -127,12 +124,10 @@ static int journal_submit_commit_record(journal_t *journal,
if (is_journal_aborted(journal))
return 0;
- descriptor = jbd2_journal_get_descriptor_buffer(journal);
- if (!descriptor)
+ bh = jbd2_journal_get_descriptor_buffer(journal);
+ if (!bh)
return 1;
- bh = jh2bh(descriptor);
-
tmp = (struct commit_header *)bh->b_data;
tmp->h_magic = cpu_to_be32(JBD2_MAGIC_NUMBER);
tmp->h_blocktype = cpu_to_be32(JBD2_COMMIT_BLOCK);
@@ -146,9 +141,9 @@ static int journal_submit_commit_record(journal_t *journal,
tmp->h_chksum_size = JBD2_CRC32_CHKSUM_SIZE;
tmp->h_chksum[0] = cpu_to_be32(crc32_sum);
}
- jbd2_commit_block_csum_set(journal, descriptor);
+ jbd2_commit_block_csum_set(journal, bh);
- JBUFFER_TRACE(descriptor, "submit commit block");
+ BUFFER_TRACE(bh, "submit commit block");
lock_buffer(bh);
clear_buffer_dirty(bh);
set_buffer_uptodate(bh);
@@ -180,7 +175,6 @@ static int journal_wait_on_commit_record(journal_t *journal,
if (unlikely(!buffer_uptodate(bh)))
ret = -EIO;
put_bh(bh); /* One for getblk() */
- jbd2_journal_put_journal_head(bh2jh(bh));
return ret;
}
@@ -321,7 +315,7 @@ static void write_tag_block(int tag_bytes, journal_block_tag_t *tag,
}
static void jbd2_descr_block_csum_set(journal_t *j,
- struct journal_head *descriptor)
+ struct buffer_head *bh)
{
struct jbd2_journal_block_tail *tail;
__u32 csum;
@@ -329,12 +323,10 @@ static void jbd2_descr_block_csum_set(journal_t *j,
if (!JBD2_HAS_INCOMPAT_FEATURE(j, JBD2_FEATURE_INCOMPAT_CSUM_V2))
return;
- tail = (struct jbd2_journal_block_tail *)
- (jh2bh(descriptor)->b_data + j->j_blocksize -
+ tail = (struct jbd2_journal_block_tail *)(bh->b_data + j->j_blocksize -
sizeof(struct jbd2_journal_block_tail));
tail->t_checksum = 0;
- csum = jbd2_chksum(j, j->j_csum_seed, jh2bh(descriptor)->b_data,
- j->j_blocksize);
+ csum = jbd2_chksum(j, j->j_csum_seed, bh->b_data, j->j_blocksize);
tail->t_checksum = cpu_to_be32(csum);
}
@@ -369,7 +361,8 @@ void jbd2_journal_commit_transaction(journal_t *journal)
{
struct transaction_stats_s stats;
transaction_t *commit_transaction;
- struct journal_head *jh, *descriptor;
+ struct journal_head *jh;
+ struct buffer_head *descriptor;
struct buffer_head **wbuf = journal->j_wbuf;
int bufs;
int flags;
@@ -394,6 +387,7 @@ void jbd2_journal_commit_transaction(journal_t *journal)
int update_tail;
int csum_size = 0;
LIST_HEAD(io_bufs);
+ LIST_HEAD(log_bufs);
if (JBD2_HAS_INCOMPAT_FEATURE(journal, JBD2_FEATURE_INCOMPAT_CSUM_V2))
csum_size = sizeof(struct jbd2_journal_block_tail);
@@ -547,7 +541,7 @@ void jbd2_journal_commit_transaction(journal_t *journal)
blk_start_plug(&plug);
jbd2_journal_write_revoke_records(journal, commit_transaction,
- WRITE_SYNC);
+ &log_bufs, WRITE_SYNC);
blk_finish_plug(&plug);
jbd_debug(3, "JBD2: commit phase 2\n");
@@ -573,8 +567,8 @@ void jbd2_journal_commit_transaction(journal_t *journal)
atomic_read(&commit_transaction->t_outstanding_credits));
err = 0;
- descriptor = NULL;
bufs = 0;
+ descriptor = NULL;
blk_start_plug(&plug);
while (commit_transaction->t_buffers) {
@@ -606,8 +600,6 @@ void jbd2_journal_commit_transaction(journal_t *journal)
record the metadata buffer. */
if (!descriptor) {
- struct buffer_head *bh;
-
J_ASSERT (bufs == 0);
jbd_debug(4, "JBD2: get descriptor\n");
@@ -618,26 +610,26 @@ void jbd2_journal_commit_transaction(journal_t *journal)
continue;
}
- bh = jh2bh(descriptor);
jbd_debug(4, "JBD2: got buffer %llu (%p)\n",
- (unsigned long long)bh->b_blocknr, bh->b_data);
- header = (journal_header_t *)&bh->b_data[0];
+ (unsigned long long)descriptor->b_blocknr,
+ descriptor->b_data);
+ header = (journal_header_t *)descriptor->b_data;
header->h_magic = cpu_to_be32(JBD2_MAGIC_NUMBER);
header->h_blocktype = cpu_to_be32(JBD2_DESCRIPTOR_BLOCK);
header->h_sequence = cpu_to_be32(commit_transaction->t_tid);
- tagp = &bh->b_data[sizeof(journal_header_t)];
- space_left = bh->b_size - sizeof(journal_header_t);
+ tagp = &descriptor->b_data[sizeof(journal_header_t)];
+ space_left = descriptor->b_size -
+ sizeof(journal_header_t);
first_tag = 1;
- set_buffer_jwrite(bh);
- set_buffer_dirty(bh);
- wbuf[bufs++] = bh;
+ set_buffer_jwrite(descriptor);
+ set_buffer_dirty(descriptor);
+ wbuf[bufs++] = descriptor;
/* Record it so that we can wait for IO
completion later */
- BUFFER_TRACE(bh, "ph3: file as descriptor");
- jbd2_journal_file_buffer(descriptor, commit_transaction,
- BJ_LogCtl);
+ BUFFER_TRACE(descriptor, "ph3: file as descriptor");
+ jbd2_file_log_bh(&log_bufs, descriptor);
}
/* Where is the buffer to be written? */
@@ -864,26 +856,19 @@ start_journal_io:
jbd_debug(3, "JBD2: commit phase 4\n");
/* Here we wait for the revoke record and descriptor record buffers */
- wait_for_ctlbuf:
- while (commit_transaction->t_log_list != NULL) {
+ while (!list_empty(&log_bufs)) {
struct buffer_head *bh;
- jh = commit_transaction->t_log_list->b_tprev;
- bh = jh2bh(jh);
- if (buffer_locked(bh)) {
- wait_on_buffer(bh);
- goto wait_for_ctlbuf;
- }
- if (cond_resched())
- goto wait_for_ctlbuf;
+ bh = list_entry(log_bufs.prev, struct buffer_head, b_assoc_buffers);
+ wait_on_buffer(bh);
+ cond_resched();
if (unlikely(!buffer_uptodate(bh)))
err = -EIO;
BUFFER_TRACE(bh, "ph5: control buffer writeout done: unfile");
clear_buffer_jwrite(bh);
- jbd2_journal_unfile_buffer(journal, jh);
- jbd2_journal_put_journal_head(jh);
+ jbd2_unfile_log_bh(bh);
__brelse(bh); /* One for getblk */
/* AKPM: bforget here */
}
@@ -934,7 +919,6 @@ start_journal_io:
J_ASSERT(commit_transaction->t_buffers == NULL);
J_ASSERT(commit_transaction->t_checkpoint_list == NULL);
J_ASSERT(commit_transaction->t_shadow_list == NULL);
- J_ASSERT(commit_transaction->t_log_list == NULL);
restart_loop:
/*
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-15 21:56:40 +0000