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jbd2: don't abort if flushing file data failed

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In ordered mode, the current jbd2 aborts the journal if a file data buffer
has an error.  But this behavior is unintended, and we found that it has
been adopted accidentally.

This patch undoes it and just calls printk() instead of aborting the
journal.  Unlike a similar patch for ext3/jbd, file data buffers are
written via generic_writepages().  But we also need to set AS_EIO
into their mappings because wait_on_page_writeback_range() clears
AS_EIO before a user process sees it.

Signed-off-by: Hidehiro Kawai <hidehiro.kawai.ez@hitachi.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This commit is contained in:
Hidehiro Kawai 2008-07-31 22:26:04 -04:00 committed by Theodore Ts'o
parent 9c83a923c6
commit e9e34f4e8f
1 changed files with 20 additions and 4 deletions
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24
fs/jbd2/commit.c
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@ -262,8 +262,18 @@ static int journal_finish_inode_data_buffers(journal_t *journal,
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);
@ -670,8 +680,14 @@ void jbd2_journal_commit_transaction(journal_t *journal)
* 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