tree 19e4736c062f87729dcdc1bd57f4919b3227ec32
parent e5a2217ef6ff088d08a27208929a6f9c635d672c
author Chris Mason <chris.mason@oracle.com> 1216650584 -0400
committer Chris Mason <chris.mason@oracle.com> 1222355045 -0400

Btrfs: Data ordered fixes

* In btrfs_delete_inode, wait for ordered extents after calling
truncate_inode_pages.  This is much faster, and more correct

* Properly clear our the PageChecked bit everywhere we redirty the page.

* Change the writepage fixup handler to lock the page range and check to
see if an ordered extent had been inserted since the improperly dirtied
page was discovered

* Wait for ordered extents outside the transaction.  This isn't required
for locking rules but does improve transaction latencies

* Reduce contention on the alloc_mutex by dropping it while incrementing
refs on a node/leaf and while dropping refs on a leaf.

Signed-off-by: Chris Mason <chris.mason@oracle.com>