On Sunday 04 March 2007, Anton Altaparmakov wrote:

quoted

A generic_fallocate makes sense to me iff we can do it in the kernel
more significantly more efficiently than in glibc, e.g. by using only
a single page in page cache instead of one for each page to be  
preallocated.

If  glibc is smart enough to do an optimal implementation, I fully  
agree
with you.

glibc cannot ever be smart enough because a file system driver will  
always know better and be able to do things in a much more optimized  
way.

Ok, that's not what I meant. It's obvious that the file system itself
can do better than both VFS and glibc. The question is whether VFS can
be better than glibc on file systems that don't offer their own
implementation of the fallocate operation.

	Arnd <><
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