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authorJan Kara <jack@suse.cz>2013-06-04 12:01:45 -0400
committerTheodore Ts'o <tytso@mit.edu>2013-06-04 12:01:45 -0400
commitf5113effc2a2ee6b86a4b345ce557353dcbcfffe (patch)
treea55e3eb4174ff0d17b9f0523619b9b647774b782 /security/yama
parent97a851ed71cd9cc2542955e92a001c6ea3d21d35 (diff)
downloadlinux-f5113effc2a2ee6b86a4b345ce557353dcbcfffe.tar.bz2
jbd2: don't create journal_head for temporary journal buffers
When writing metadata to the journal, we create temporary buffer heads for that task. We also attach journal heads to these buffer heads but the only purpose of the journal heads is to keep buffers linked in transaction's BJ_IO list. We remove the need for journal heads by reusing buffer_head's b_assoc_buffers list for that purpose. Also since BJ_IO list is just a temporary list for transaction commit, we use a private list in jbd2_journal_commit_transaction() for that thus removing BJ_IO list from transaction completely. Reviewed-by: Zheng Liu <wenqing.lz@taobao.com> Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
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