swap file vs swap partition

Hi all,

I have read here (http://www.softpanorama.org/Internals/Filesystems/linux_swap_filesystem.shtml )

that swapping to a file is slower than swapping to a partition , based on the following reasons

1) large files(swap file) will be somewhat fragmented forcing additional disk/head movement in some cases and that you will have to deal with metadata describing where on the disk the file blocks are. this eats up both in-system filesystem cache and causes additional disk activity while you load metadata that is not in cache


is there any other reason that justifies this claim OR what exactly is the tradeoff between a swap partition and a swap file ??
.

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