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authorJan Kara <jack@suse.cz>2009-12-08 23:51:10 -0500
committerTheodore Ts'o <tytso@mit.edu>2009-12-08 23:51:10 -0500
commitb436b9bef84de6893e86346d8fbf7104bc520645 (patch)
tree50fb9ae167bcd622e9adf47646bcf3b4c7dd111d /fs/ext4/super.c
parent194074acacebc169ded90a4657193f5180015051 (diff)
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/super.c')
-rw-r--r--fs/ext4/super.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 8ab0c9518473..2b13dcfcf775 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -706,6 +706,8 @@ static struct inode *ext4_alloc_inode(struct super_block *sb)
spin_lock_init(&(ei->i_block_reservation_lock));
INIT_LIST_HEAD(&ei->i_aio_dio_complete_list);
ei->cur_aio_dio = NULL;
+ ei->i_sync_tid = 0;
+ ei->i_datasync_tid = 0;
return &ei->vfs_inode;
}