#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.
goto nope;
/* OK, it's a truncated page */
- if (TestSetPageLocked(page))
+ if (!trylock_page(page))
goto nope;
page_cache_get(page);
return ret;
}
+/*
+ * 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.
* 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;
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);
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;
spin_unlock(&journal->j_list_lock);
err = filemap_fdatawait(jinode->i_vfs_inode->i_mapping);
- if (!ret)
- ret = err;
+ if (err) {
+ /*
+ * Because AS_EIO is cleared by
+ * wait_on_page_writeback_range(), set it again so
+ * that user process can get -EIO from fsync().
+ */
+ set_bit(AS_EIO,
+ &jinode->i_vfs_inode->i_mapping->flags);
+
+ if (!ret)
+ ret = err;
+ }
spin_lock(&journal->j_list_lock);
jinode->i_flags &= ~JI_COMMIT_RUNNING;
wake_up_bit(&jinode->i_flags, __JI_COMMIT_RUNNING);
* 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);
* commit block, which happens below in such setting.
*/
err = journal_finish_inode_data_buffers(journal, commit_transaction);
- if (err)
- jbd2_journal_abort(journal, err);
+ if (err) {
+ char b[BDEVNAME_SIZE];
+
+ printk(KERN_WARNING
+ "JBD2: Detected IO errors while flushing file data "
+ "on %s\n", bdevname(journal->j_fs_dev, b));
+ err = 0;
+ }
/* Lo and behold: we have just managed to send a transaction to
the log. Before we can commit it, wait for the IO so far to