tree 1451cad453a3ff66bc5369dc83daf7e3a50c4897
parent 3a90983dbdcb2f4f48c0d771d8e5b4d88f27fae6
author Chris Mason <chris.mason@oracle.com> 1297359300 -0500
committer Chris Mason <chris.mason@oracle.com> 1297706632 -0500

Btrfs: fix page->private races

There is a race where btrfs_releasepage can drop the
page->private contents just as alloc_extent_buffer is setting
up pages for metadata.  Because of how the Btrfs page flags work,
this results in us skipping the crc on the page during IO.

This patch sovles the race by waiting until after the extent buffer
is inserted into the radix tree before it sets page private.

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