1 files changed, 19 insertions, 38 deletions

diff --git a/fs/jbd2/commit.c b/fs/jbd2/commit.c
index 36345fefa3ff..70078096117d 100644
--- a/fs/jbd2/commit.c
+++ b/fs/jbd2/commit.c
@@ -81,11 +81,11 @@ static void release_buffer_page(struct buffer_head *bh)
         if (!trylock_page(page))
                 goto nope;
 
-        page_cache_get(page);
+        get_page(page);
         __brelse(bh);
         try_to_free_buffers(page);
         unlock_page(page);
-        page_cache_release(page);
+        put_page(page);
         return;
 
 nope:
@@ -131,14 +131,12 @@ static int journal_submit_commit_record(journal_t *journal,
         if (is_journal_aborted(journal))
                 return 0;
 
-        bh = jbd2_journal_get_descriptor_buffer(journal);
+        bh = jbd2_journal_get_descriptor_buffer(commit_transaction,
+                                                JBD2_COMMIT_BLOCK);
         if (!bh)
                 return 1;
 
         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);
-        tmp->h_sequence = cpu_to_be32(commit_transaction->t_tid);
         tmp->h_commit_sec = cpu_to_be64(now.tv_sec);
         tmp->h_commit_nsec = cpu_to_be32(now.tv_nsec);
 
@@ -221,8 +219,10 @@ static int journal_submit_data_buffers(journal_t *journal,
 
         spin_lock(&journal->j_list_lock);
         list_for_each_entry(jinode, &commit_transaction->t_inode_list, i_list) {
+                if (!(jinode->i_flags & JI_WRITE_DATA))
+                        continue;
                 mapping = jinode->i_vfs_inode->i_mapping;
-                set_bit(__JI_COMMIT_RUNNING, &jinode->i_flags);
+                jinode->i_flags |= JI_COMMIT_RUNNING;
                 spin_unlock(&journal->j_list_lock);
                 /*
                  * submit the inode data buffers. We use writepage
@@ -236,8 +236,8 @@ static int journal_submit_data_buffers(journal_t *journal,
                         ret = err;
                 spin_lock(&journal->j_list_lock);
                 J_ASSERT(jinode->i_transaction == commit_transaction);
-                clear_bit(__JI_COMMIT_RUNNING, &jinode->i_flags);
-                smp_mb__after_atomic();
+                jinode->i_flags &= ~JI_COMMIT_RUNNING;
+                smp_mb();
                 wake_up_bit(&jinode->i_flags, __JI_COMMIT_RUNNING);
         }
         spin_unlock(&journal->j_list_lock);
@@ -258,7 +258,9 @@ static int journal_finish_inode_data_buffers(journal_t *journal,
         /* For locking, see the comment in journal_submit_data_buffers() */
         spin_lock(&journal->j_list_lock);
         list_for_each_entry(jinode, &commit_transaction->t_inode_list, i_list) {
-                set_bit(__JI_COMMIT_RUNNING, &jinode->i_flags);
+                if (!(jinode->i_flags & JI_WAIT_DATA))
+                        continue;
+                jinode->i_flags |= JI_COMMIT_RUNNING;
                 spin_unlock(&journal->j_list_lock);
                 err = filemap_fdatawait(jinode->i_vfs_inode->i_mapping);
                 if (err) {
@@ -274,8 +276,8 @@ static int journal_finish_inode_data_buffers(journal_t *journal,
                                 ret = err;
                 }
                 spin_lock(&journal->j_list_lock);
-                clear_bit(__JI_COMMIT_RUNNING, &jinode->i_flags);
-                smp_mb__after_atomic();
+                jinode->i_flags &= ~JI_COMMIT_RUNNING;
+                smp_mb();
                 wake_up_bit(&jinode->i_flags, __JI_COMMIT_RUNNING);
         }
 
@@ -319,22 +321,6 @@ static void write_tag_block(journal_t *j, journal_block_tag_t *tag,
                 tag->t_blocknr_high = cpu_to_be32((block >> 31) >> 1);
 }
 
-static void jbd2_descr_block_csum_set(journal_t *j,
-                                      struct buffer_head *bh)
-{
-        struct jbd2_journal_block_tail *tail;
-        __u32 csum;
-
-        if (!jbd2_journal_has_csum_v2or3(j))
-                return;
-
-        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, bh->b_data, j->j_blocksize);
-        tail->t_checksum = cpu_to_be32(csum);
-}
-
 static void jbd2_block_tag_csum_set(journal_t *j, journal_block_tag_t *tag,
                                     struct buffer_head *bh, __u32 sequence)
 {
@@ -379,7 +365,6 @@ void jbd2_journal_commit_transaction(journal_t *journal)
         ktime_t start_time;
         u64 commit_time;
         char *tagp = NULL;
-        journal_header_t *header;
         journal_block_tag_t *tag = NULL;
         int space_left = 0;
         int first_tag = 0;
@@ -554,8 +539,7 @@ void jbd2_journal_commit_transaction(journal_t *journal)
                 jbd2_journal_abort(journal, err);
 
         blk_start_plug(&plug);
-        jbd2_journal_write_revoke_records(journal, commit_transaction,
-                                          &log_bufs, WRITE_SYNC);
+        jbd2_journal_write_revoke_records(commit_transaction, &log_bufs);
 
         jbd_debug(3, "JBD2: commit phase 2b\n");
 
@@ -616,7 +600,9 @@ void jbd2_journal_commit_transaction(journal_t *journal)
 
                         jbd_debug(4, "JBD2: get descriptor\n");
 
-                        descriptor = jbd2_journal_get_descriptor_buffer(journal);
+                        descriptor = jbd2_journal_get_descriptor_buffer(
+                                                        commit_transaction,
+                                                        JBD2_DESCRIPTOR_BLOCK);
                         if (!descriptor) {
                                 jbd2_journal_abort(journal, -EIO);
                                 continue;
@@ -625,11 +611,6 @@ void jbd2_journal_commit_transaction(journal_t *journal)
                         jbd_debug(4, "JBD2: got buffer %llu (%p)\n",
                                 (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 = &descriptor->b_data[sizeof(journal_header_t)];
                         space_left = descriptor->b_size -
                                                 sizeof(journal_header_t);
@@ -721,7 +702,7 @@ void jbd2_journal_commit_transaction(journal_t *journal)
 
                         tag->t_flags |= cpu_to_be16(JBD2_FLAG_LAST_TAG);
 
-                        jbd2_descr_block_csum_set(journal, descriptor);
+                        jbd2_descriptor_block_csum_set(journal, descriptor);
 start_journal_io:
                         for (i = 0; i < bufs; i++) {
                                 struct buffer_head *bh = wbuf[i];