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jbd2: introduce/export functions jbd2_journal_submit|finish_inode_data_buffers()

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Export functions that implement the current behavior done
for an inode in journal_submit|finish_inode_data_buffers().

No functional change.

Signed-off-by: Mauricio Faria de Oliveira <mfo@canonical.com>
Suggested-by: Jan Kara <jack@suse.cz>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Link: https://lore.kernel.org/r/20201006004841.600488-2-mfo@canonical.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This commit is contained in:
Mauricio Faria de Oliveira 2020-10-05 21:48:38 -03:00 committed by Theodore Ts'o
parent 8394a6abf3
commit aa3c0c61f6
3 changed files with 22 additions and 20 deletions
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36
fs/jbd2/commit.c
View File

@ -187,19 +187,17 @@ static int journal_wait_on_commit_record(journal_t *journal,
* use writepages() because with delayed allocation we may be doing
* block allocation in writepages().
*/
static int journal_submit_inode_data_buffers(struct address_space *mapping,
loff_t dirty_start, loff_t dirty_end)
int jbd2_journal_submit_inode_data_buffers(struct jbd2_inode *jinode)
{
int ret;
struct address_space *mapping = jinode->i_vfs_inode->i_mapping;
struct writeback_control wbc = {
.sync_mode = WB_SYNC_ALL,
.nr_to_write = mapping->nrpages * 2,
.range_start = dirty_start,
.range_end = dirty_end,
.range_start = jinode->i_dirty_start,
.range_end = jinode->i_dirty_end,
};
ret = generic_writepages(mapping, &wbc);
return ret;
return generic_writepages(mapping, &wbc);
}
/*
@ -215,16 +213,11 @@ static int journal_submit_data_buffers(journal_t *journal,
{
struct jbd2_inode *jinode;
int err, ret = 0;
struct address_space *mapping;
spin_lock(&journal->j_list_lock);
list_for_each_entry(jinode, &commit_transaction->t_inode_list, i_list) {
loff_t dirty_start = jinode->i_dirty_start;
loff_t dirty_end = jinode->i_dirty_end;
if (!(jinode->i_flags & JI_WRITE_DATA))
continue;
mapping = jinode->i_vfs_inode->i_mapping;
jinode->i_flags |= JI_COMMIT_RUNNING;
spin_unlock(&journal->j_list_lock);
/*
@ -234,8 +227,7 @@ static int journal_submit_data_buffers(journal_t *journal,
* only allocated blocks here.
*/
trace_jbd2_submit_inode_data(jinode->i_vfs_inode);
err = journal_submit_inode_data_buffers(mapping, dirty_start,
dirty_end);
err = jbd2_journal_submit_inode_data_buffers(jinode);
if (!ret)
ret = err;
spin_lock(&journal->j_list_lock);
@ -248,6 +240,15 @@ static int journal_submit_data_buffers(journal_t *journal,
return ret;
}
int jbd2_journal_finish_inode_data_buffers(struct jbd2_inode *jinode)
{
struct address_space *mapping = jinode->i_vfs_inode->i_mapping;
return filemap_fdatawait_range_keep_errors(mapping,
jinode->i_dirty_start,
jinode->i_dirty_end);
}
/*
* Wait for data submitted for writeout, refile inodes to proper
* transaction if needed.
@ -262,16 +263,11 @@ 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) {
loff_t dirty_start = jinode->i_dirty_start;
loff_t dirty_end = jinode->i_dirty_end;
if (!(jinode->i_flags & JI_WAIT_DATA))
continue;
jinode->i_flags |= JI_COMMIT_RUNNING;
spin_unlock(&journal->j_list_lock);
err = filemap_fdatawait_range_keep_errors(
jinode->i_vfs_inode->i_mapping, dirty_start,
dirty_end);
err = jbd2_journal_finish_inode_data_buffers(jinode);
if (!ret)
ret = err;
spin_lock(&journal->j_list_lock);

2
fs/jbd2/journal.c
View File

@ -91,6 +91,8 @@ EXPORT_SYMBOL(jbd2_journal_try_to_free_buffers);
EXPORT_SYMBOL(jbd2_journal_force_commit);
EXPORT_SYMBOL(jbd2_journal_inode_ranged_write);
EXPORT_SYMBOL(jbd2_journal_inode_ranged_wait);
EXPORT_SYMBOL(jbd2_journal_submit_inode_data_buffers);
EXPORT_SYMBOL(jbd2_journal_finish_inode_data_buffers);
EXPORT_SYMBOL(jbd2_journal_init_jbd_inode);
EXPORT_SYMBOL(jbd2_journal_release_jbd_inode);
EXPORT_SYMBOL(jbd2_journal_begin_ordered_truncate);

4
include/linux/jbd2.h
View File

@ -1421,6 +1421,10 @@ extern int jbd2_journal_inode_ranged_write(handle_t *handle,
extern int jbd2_journal_inode_ranged_wait(handle_t *handle,
struct jbd2_inode *inode, loff_t start_byte,
loff_t length);
extern int jbd2_journal_submit_inode_data_buffers(
struct jbd2_inode *jinode);
extern int jbd2_journal_finish_inode_data_buffers(
struct jbd2_inode *jinode);
extern int jbd2_journal_begin_ordered_truncate(journal_t *journal,
struct jbd2_inode *inode, loff_t new_size);
extern void jbd2_journal_init_jbd_inode(struct jbd2_inode *jinode, struct inode *inode);