On Wed, Feb 15, 2012 at 12:27:19AM -0600, Adam Vande More wrote: > On Tue, Feb 14, 2012 at 10:50 PM, Scott Long <sco...@samsco.org> wrote: > > > > > Any filesystem that uses bread/bwrite/cluster_read are already using the > > "generic caching subsystem" that you propose. This includes UDF, CD9660, > > MSDOS, NTFS, XFS, ReiserFS, EXT2FS, and HPFS, i.e. every local storage > > filesystem in the tree except for ZFS. Not all of them implement > > VOP_GETPAGES/VOP_PUTPAGES, but those are just optimizations for the vnode > > pager, not requirements for using buffer-cache services on block devices. > > As Kostik pointed out in a parallel email, the only thing that was removed > > from FreeBSD was the userland interface to cached devices via /dev nodes. > > > > Does this mean the Architecture Handbook page is wrong?: > > http://www.freebsd.org/doc/en/books/arch-handbook/driverbasics-block.html
No, why did you decided that it is wrong ?
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