Messages in this thread | | | Date | Thu, 20 May 1999 18:16:55 +0200 | From | Jamie Lokier <> | Subject | Re: Deletion of big files... |
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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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