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ocfs2: Convert to new freezing mechanism

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Protect ocfs2_page_mkwrite() and ocfs2_file_aio_write() using the new freeze
protection. We also protect several ioctl entry points which were missing the
protection. Finally, we add freeze protection to the journaling mechanism so
that iput() of unlinked inode cannot modify a frozen filesystem.

CC: Mark Fasheh <mfasheh@suse.com>
CC: Joel Becker <jlbec@evilplan.org>
CC: ocfs2-devel@oss.oracle.com
Acked-by: Joel Becker <jlbec@evilplan.org>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Jan Kara
2012-06-12 16:20:40 +02:00
committed by Al Viro
parent d9457dc056
commit fef6925cd4
4 changed files with 29 additions and 5 deletions
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7
fs/ocfs2/journal.c
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@@ -355,11 +355,14 @@ handle_t *ocfs2_start_trans(struct ocfs2_super *osb, int max_buffs)
if (journal_current_handle())
return jbd2_journal_start(journal, max_buffs);
sb_start_intwrite(osb->sb);
down_read(&osb->journal->j_trans_barrier);
handle = jbd2_journal_start(journal, max_buffs);
if (IS_ERR(handle)) {
up_read(&osb->journal->j_trans_barrier);
sb_end_intwrite(osb->sb);
mlog_errno(PTR_ERR(handle));
@@ -388,8 +391,10 @@ int ocfs2_commit_trans(struct ocfs2_super *osb,
if (ret < 0)
mlog_errno(ret);
if (!nested)
if (!nested) {
up_read(&journal->j_trans_barrier);
sb_end_intwrite(osb->sb);
}
return ret;
}