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author | Jan Kara <jack@suse.cz> | 2009-12-08 23:51:10 -0500 |
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committer | Theodore Ts'o <tytso@mit.edu> | 2009-12-08 23:51:10 -0500 |
commit | b436b9bef84de6893e86346d8fbf7104bc520645 (patch) | |
tree | 50fb9ae167bcd622e9adf47646bcf3b4c7dd111d /fs/ext4/ext4_jbd2.h | |
parent | 194074acacebc169ded90a4657193f5180015051 (diff) | |
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ext4: Wait for proper transaction commit on fsync
We cannot rely on buffer dirty bits during fsync because pdflush can come
before fsync is called and clear dirty bits without forcing a transaction
commit. What we do is that we track which transaction has last changed
the inode and which transaction last changed allocation and force it to
disk on fsync.
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/ext4_jbd2.h')
-rw-r--r-- | fs/ext4/ext4_jbd2.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/fs/ext4/ext4_jbd2.h b/fs/ext4/ext4_jbd2.h index 2c2b262..05eca81 100644 --- a/fs/ext4/ext4_jbd2.h +++ b/fs/ext4/ext4_jbd2.h @@ -249,6 +249,19 @@ static inline int ext4_jbd2_file_inode(handle_t *handle, struct inode *inode) return 0; } +static inline void ext4_update_inode_fsync_trans(handle_t *handle, + struct inode *inode, + int datasync) +{ + struct ext4_inode_info *ei = EXT4_I(inode); + + if (ext4_handle_valid(handle)) { + ei->i_sync_tid = handle->h_transaction->t_tid; + if (datasync) + ei->i_datasync_tid = handle->h_transaction->t_tid; + } +} + /* super.c */ int ext4_force_commit(struct super_block *sb); |