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SubjectRe: Deletion of big files...
Rogier Wolff wrote:
> Clearing the bitmaps might become the bottleneck in that case.

A meta-bitmap where each bitmap block is represented by a bit in the
meta-bitmap would solve this.

A 0 in the meta-bitmap means the bitmap block is assumed to be "all
unallocated" whatever the actual disk contents. A 1 in the meta-bitmap
means to use the bitmap block contents.

Then any operation which clears many whole bitmap blocks can simply
clear meta-bitmap bits.

I don't know how this would impact reliability in the case of a system
crash + e2fsck.

-- Jamie

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