tree 2ee8038af3d28460dd9004ab69d48d301c0a76b8
parent b0331a4c4c339ba7786472b137d6ece9e7f810ec
author Chris Mason <chris.mason@oracle.com> 1199825191 -0500
committer Chris Mason <chris.mason@oracle.com> 1222355039 -0400

Btrfs: online shrinking fixes

While shrinking the FS, the allocation functions need to make sure
they don't try to allocate bytes past the end of the FS.

nodatacow needed an extra check to force cows when the existing extents are
past the end of the FS.

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