diff options
Diffstat (limited to 'fs/jbd2')
| -rw-r--r-- | fs/jbd2/commit.c | 38 |
1 files changed, 33 insertions, 5 deletions
diff --git a/fs/jbd2/commit.c b/fs/jbd2/commit.c index 483183d15ed5..f8b3be873226 100644 --- a/fs/jbd2/commit.c +++ b/fs/jbd2/commit.c @@ -22,6 +22,8 @@ #include <linux/pagemap.h> #include <linux/jiffies.h> #include <linux/crc32.h> +#include <linux/writeback.h> +#include <linux/backing-dev.h> /* * Default IO end handler for temporary BJ_IO buffer_heads. @@ -185,6 +187,27 @@ static int journal_wait_on_commit_record(struct buffer_head *bh) } /* + * write the filemap data using writepage() address_space_operations. + * We don't do block allocation here even for delalloc. We don't + * use writepages() because with dealyed allocation we may be doing + * block allocation in writepages(). + */ +static int journal_submit_inode_data_buffers(struct address_space *mapping) +{ + int ret; + struct writeback_control wbc = { + .sync_mode = WB_SYNC_ALL, + .nr_to_write = mapping->nrpages * 2, + .range_start = 0, + .range_end = i_size_read(mapping->host), + .for_writepages = 1, + }; + + ret = generic_writepages(mapping, &wbc); + return ret; +} + +/* * Submit all the data buffers of inode associated with the transaction to * disk. * @@ -192,7 +215,7 @@ static int journal_wait_on_commit_record(struct buffer_head *bh) * our inode list. We use JI_COMMIT_RUNNING flag to protect inode we currently * operate on from being released while we write out pages. */ -static int journal_submit_inode_data_buffers(journal_t *journal, +static int journal_submit_data_buffers(journal_t *journal, transaction_t *commit_transaction) { struct jbd2_inode *jinode; @@ -204,8 +227,13 @@ static int journal_submit_inode_data_buffers(journal_t *journal, mapping = jinode->i_vfs_inode->i_mapping; jinode->i_flags |= JI_COMMIT_RUNNING; spin_unlock(&journal->j_list_lock); - err = filemap_fdatawrite_range(mapping, 0, - i_size_read(jinode->i_vfs_inode)); + /* + * submit the inode data buffers. We use writepage + * instead of writepages. Because writepages can do + * block allocation with delalloc. We need to write + * only allocated blocks here. + */ + err = journal_submit_inode_data_buffers(mapping); if (!ret) ret = err; spin_lock(&journal->j_list_lock); @@ -228,7 +256,7 @@ static int journal_finish_inode_data_buffers(journal_t *journal, struct jbd2_inode *jinode, *next_i; int err, ret = 0; - /* For locking, see the comment in journal_submit_inode_data_buffers() */ + /* 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) { jinode->i_flags |= JI_COMMIT_RUNNING; @@ -431,7 +459,7 @@ void jbd2_journal_commit_transaction(journal_t *journal) * Now start flushing things to disk, in the order they appear * on the transaction lists. Data blocks go first. */ - err = journal_submit_inode_data_buffers(journal, commit_transaction); + err = journal_submit_data_buffers(journal, commit_transaction); if (err) jbd2_journal_abort(journal, err); |