Btrfs: Implement basic support for -ENOSPC
authorChris Mason <chris.mason@oracle.com>
Fri, 21 Dec 2007 21:27:21 +0000 (16:27 -0500)
committerChris Mason <chris.mason@oracle.com>
Thu, 25 Sep 2008 15:03:58 +0000 (11:03 -0400)
This is intended to prevent accidentally filling the drive.  A determined
user can still make things oops.

It includes some accounting of the current bytes under delayed allocation,
but this will change as things get optimized

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

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