mapping from file's block to memory page ?

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hi

if i got it right the buffer cache is no longer used for files data in
the new kernel, but it was unified with the vm.
how do i map from filesystem blocks into memory pages in the new kernel
?
is there a mechanism like the bh = bread( dev, block, size ) in kernel
2.2 ?

please CC me for any replay

THX
/gaby

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