On Tue, Mar 21, 2006 at 05:10:36PM -0800, Valerie Henson wrote:
>
> The combination of the orphan inode and preallocation blocks problem
> led me to another idea: create in-memory-only allocation bitmaps for
> both inodes and blocks. These bitmaps would track blocks and inodes
> allocated only for the life of this mount (or a file open) in memory
> rather than on disk. I haven't implemented this yet but I think it is
> a promising approach.
As I discovered about 5 seconds after starting to implement this, this
is a terrible idea. Hint: think about worst-case memory usage. I am
working on porting the ext3 reservation code to ext2 instead.
-VAL
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